Calcium sulfate whisker production process and centrifugal machine for production

Abstract

The invention belongs to the technical field of calcium sulfate whisker production, and particularly relates to a calcium sulfate whisker production process and a centrifugal machine for production. The centrifugal machine comprises a shell, supporting legs are fixedly connected to the lower end face of the shell, a partition plate is fixedly connected to one side of the inner cavity wall of the shell, and an inner shell is rotationally arranged in the middle of the upper end face of the partition plate; a plurality of filter holes are formed in the inner shell, and a surrounding dredging mechanism for preventing calcium sulfate solid raw materials from blocking the filter holes is also arranged on the inner shell. By means of the surrounding dredging mechanism, when the inner shell rotates, all filtering holes blocked by calcium sulfate solid raw materials can be dredged in the mode that the penetrating rods penetrate through the filtering holes, and therefore the situation that in the centrifugal process, the filtering holes are blocked by the calcium sulfate solid raw materials, and then the solid-liquid separation efficiency is affected is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of calcium sulfate whisker production, in particular to a calcium sulfate whisker production process and a centrifuge for production. Background Art

[0002] Calcium sulfate whiskers are a new type of needle-shaped fibrous single crystal that grows in the form of a single crystal and has a uniform cross-section, a complete appearance, and a perfect internal structure. During the production process of calcium sulfate whiskers, a centrifuge is required to separate the solid and liquid of the calcium sulfate solid raw material. After the solid-liquid separation, the filter cake is dried to obtain calcium sulfate whiskers.

[0003] The patent with the announcement number CN217164915U discloses a centrifuge that is convenient for cleaning the inner wall, which relates to the technical field of centrifuges, including a base, an outer shell and an inner shell, wherein a motor is installed on the base, the outer shell is installed on the base, the inner shell is installed inside the outer shell and connected to the motor, a plurality of filter holes are evenly distributed on the side wall of the inner shell, a scraper device is installed on the side wall of the outer shell, the scraper device abuts against the inner wall of the inner shell, and the scraper device and the inner wall of the inner shell slide relative to each other. The patent has the effect of operating the scraper device so that the scraper abuts against the inner wall of the inner shell, and then the inner wall of the centrifuge can be automatically cleaned more conveniently by rotating the inner shell.

[0004] However, the above technical solution still has the following deficiencies in practical application: Although the scraper can be used to scrape off the material adhering to the inner wall of the inner shell, during the centrifugation process, when some materials are irregular in shape, they may have more edges or protrusions, which are easy to contact and rub against the filter holes, causing the materials to be stuck in the filter holes and block the filter holes. The scraper can only scrape the materials adhering to the inner surface of the inner shell. When the materials are firmly stuck in the filter holes, it is not easy for the scraper to remove them from the filter holes, resulting in the liquid being blocked by the blocked materials when passing through the filter holes, thereby affecting the solid-liquid separation efficiency.

[0005] To this end, the present invention provides a calcium sulfate whisker production process and a centrifuge for production. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one technical problem raised in the background technology, the present invention proposes a calcium sulfate whisker production process and a centrifuge for production.

[0007] The technical solution adopted by the present invention to solve the technical problem is: a centrifuge for producing calcium sulfate whiskers, comprising a shell, a control panel is arranged on one side of the outer wall of the shell, a support leg is fixedly connected to the lower end surface of the shell, a partition is fixedly connected to one side of the inner cavity wall of the shell, an inner shell is rotatably arranged at the middle part of the upper end surface of the partition, a plurality of filter holes are arranged on the inner shell, and a surrounding dredging mechanism is also arranged on the inner shell to prevent the filter holes from being blocked by solid calcium sulfate raw materials; The surrounding dredging mechanism includes a gear ring which is sleeved and rotatably arranged on the upper side of the outer ring of the inner shell, one side of the gear ring is fixedly connected to an L-shaped rod, one side of the L-shaped rod is slidably connected to two sliding rods, one end of the sliding rod is fixedly connected to a mounting plate, and a plurality of through rods are rotatably arranged on the right end surface of the mounting plate. The plurality of through rods can pass through the filter holes at the same time, and when the through rods pass through the filter holes, they fit into the inner walls of the filter holes.

[0008] Preferably, a motor three is fixedly connected to the middle portion of the lower end surface of the partition, and an output end of the motor three is fixedly connected to the bottom of the inner shell.

[0009] Preferably, the inner ring of the gear ring is provided with a plurality of tooth blocks, a gear is rotatably provided on one side of the upper end of the inner shell, the gear and the tooth block are meshed with each other, a motor 1 is fixedly connected to one side of the upper end of the inner shell, and the output end of the motor 1 is fixedly connected to the gear.

[0010] Preferably, one side of the L-shaped rod is fixedly connected to an electric push rod, and the piston end of the electric push rod is fixedly connected to one side of the mounting plate.

[0011] Preferably, rotating shafts are rotatably provided at both ends of the through rod, a worm gear is sleeved and fixedly connected to the left end of the rotating shaft, the worm gear is rotatably provided on the inner cavity wall of the mounting plate, transmission rods are rotatably provided at the upper and lower ends of the inner cavity of the mounting plate, a plurality of groups of worm teeth are provided on the transmission rod, the worm teeth and the worm gear are meshed with each other, a motor 2 is fixedly connected to one side of the upper end surface of the mounting plate, and the output end of the motor 2 is fixedly connected to one end of the transmission rod.

[0012] Preferably, a drain pipe is provided on one side of the shell, and a valve is provided on the drain pipe.

[0013] Preferably, a rotating rod is fixedly connected to the right end of the rotating shaft, and the rotating rod is rotatably arranged on the through-rod through the rotating shaft, and one side of the rotating rod is in contact with the right end surface of the through-rod.

[0014] Preferably, both sides of the rotating rod are slidably connected to trapezoidal blocks through the storage groove, one end of the trapezoidal block is fixedly connected to a spring, the end of the spring away from the trapezoidal block is fixedly connected to the inner cavity of the storage groove, and both sides of the trapezoidal block are fixedly connected to blades, and the blades are in contact with the inner wall of the storage groove.

[0015] Preferably, a mounting rod is fixedly connected to one side of the upper end surface of the outer shell, an anti-sticking plate is fixedly connected to one end of the mounting rod, and the anti-sticking plate is in contact with the inner wall of the inner shell.

[0016] A calcium sulfate whisker production process comprises the following specific steps: S1. Add calcium sulfate solid into a high-speed disperser and add water to disperse it, then transfer it into a crystal growth kettle, use steam to heat it to 160-170℃ for crystal growth, and keep it warm for several hours; S2. After the heat preservation is completed, the centrifuge is pumped into the centrifuge for solid-liquid separation, and the mother liquor is reused in the dispersion process; S3, drying the filter cake to obtain calcium sulfate whiskers, which can be coated by adding a surface coating agent in the crystal growth process or the drying process.

[0017] The beneficial effects of the present invention are as follows: 1. A calcium sulfate whisker production process and a centrifuge for production of the present invention utilize a surrounding dredging mechanism. When the inner shell rotates, all filter holes blocked by calcium sulfate solid raw materials can be dredged by the way that the through rod passes through the filter holes, thereby avoiding the situation that the filter holes are blocked by the calcium sulfate solid raw materials during the centrifugation process, thereby affecting the solid-liquid separation efficiency. In addition, when the through rod passes through the filter holes, the rotating rod is driven to rotate. Since the rotating rod is in contact with the right end surface of the through rod, the calcium sulfate solid raw materials adhering to the right end surface of the through rod can be scraped off, thereby avoiding the situation that when the end of the through rod contacts the calcium sulfate solid raw materials, the calcium sulfate solid raw materials adhering to the end of the through rod fall to the outside of the inner shell again when the through rod is removed from the filter hole, thereby ensuring the normal solid-liquid separation work. In addition, when the through rod enters the filter hole from the outside of the inner shell, the trapezoidal block enters under the action of extrusion. In this process, the blade will also move, and at the same time, with the rotation of the rotating rod, a cutting force can be applied to the calcium sulfate solid raw material that blocks the filter hole, and irregular calcium sulfate solid raw materials can be cut off, thereby avoiding the situation that after the through rod pushes the irregular calcium sulfate solid raw materials, the irregular calcium sulfate solid raw materials still have a high probability of continuing to block the remaining filter holes, thereby ensuring the dredging effect, eliminating the process of repeated dredging, and further improving the solid-liquid separation efficiency. In addition, since the blade fits the inner wall of the storage groove, when the through rod moves from the inside of the inner shell to the outside of the inner shell, the blade will retract into the storage groove due to extrusion. In this process, the blade and the storage groove form a scraping, which can scrape off the calcium sulfate solid raw material adhered to the surface of the blade, thereby avoiding the situation that the calcium sulfate solid raw material adheres to the end of the blade and affects the cutting effect of the blade.

[0018] 2. A calcium sulfate whisker production process and a production centrifuge according to the present invention, in the centrifugal treatment process of the calcium sulfate solid raw material, when the inner shell rotates, its inner wall can form a scrape with the edge of the anti-sticking plate, and the calcium sulfate solid raw material adhered to the inner wall of the inner shell can be scraped off, thereby avoiding the situation that the calcium sulfate solid raw material adheres to the inner wall of the inner shell, causing difficulty in separation, affecting the subsequent raw material collection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 It is a schematic diagram of the complete three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the half-section of the outer shell and the inner shell; Figure 3 It is a three-dimensional structural schematic diagram of the outer shell and the inner shell half section from another perspective; Figure 4 It is a schematic diagram of the three-dimensional structure of the inner shell half section; Figure 5 yes Figure 4 A partial enlarged view of the middle part; Figure 6 It is a schematic diagram of the three-dimensional structure of the mounting plate (partial section of the mounting plate); Figure 7 It is a schematic diagram of the three-dimensional structure of a half-section of a through-rod; Figure 8 It is a schematic diagram of the internal three-dimensional structure of the rotating rod.

[0021] In the figure: 1. outer shell; 2. worm gear; 3. mounting rod; 4. drain pipe; 5. inner shell; 6. filter hole; 7. gear ring; 8. motor one; 9. gear; 10. L-shaped rod; 11. electric push rod; 12. slide rod; 13. mounting plate; 14. through rod; 15. motor two; 16. rotating shaft; 17. rotating rod; 18. trapezoidal block; 19. blade; 20. spring; 21. worm gear; 22. transmission rod; 23. gear block; 24. motor three; 25. control panel; 26. anti-sticking plate; 27. storage slot; 28. valve; 29. ​​support leg; 30. partition. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Please refer to Figure 1-Figure 8The present invention provides a technical solution: a centrifuge for producing calcium sulfate whiskers, comprising a shell 1, a control panel 25 is arranged on one side of the outer wall of the shell 1, a support leg 29 is fixedly connected to the lower end surface of the shell 1, a partition 30 is fixedly connected to one side of the inner cavity wall of the shell 1, an inner shell 5 is rotatably arranged at the middle part of the upper end surface of the partition 30, a plurality of filter holes 6 are arranged on the inner shell 5, and a surrounding dredging mechanism is also arranged on the inner shell 5 to prevent the filter holes from being blocked by solid calcium sulfate raw materials; The surrounding dredging mechanism includes a gear ring 7 which is sleeved and rotatably arranged on the upper side of the outer ring of the inner shell 5, an L-shaped rod 10 is fixedly connected to one side of the gear ring 7, two sliding rods 12 are slidably connected to one side of the L-shaped rod 10, one end of the sliding rod 12 is fixedly connected to a mounting plate 13, and a plurality of penetrating rods 14 are rotatably arranged on the right end face of the mounting plate 13. The plurality of penetrating rods 14 can pass through the filter hole 6 at the same time, and when the penetrating rods 14 pass through the filter hole 6, they fit with the inner wall of the filter hole 6.

[0024] In this embodiment, Figure 1-Figure 8 As shown, a motor 3 24 is fixedly connected to the middle of the lower end surface of the partition 30 , and an output end of the motor 3 24 is fixedly connected to the bottom of the inner shell 5 .

[0025] The inner ring of the gear ring 7 is provided with a plurality of tooth blocks 23, a gear 9 is rotatably provided on one side of the upper end of the inner shell 5, the gear 9 and the tooth block 23 are meshed with each other, a motor 8 is fixedly connected to one side of the upper end of the inner shell 5, and the output end of the motor 8 is fixedly connected to the gear 9.

[0026] An electric push rod 11 is fixedly connected to one side of the L-shaped rod 10 , and a piston end of the electric push rod 11 is fixedly connected to one side of the mounting plate 13 .

[0027] A rotating shaft 16 is rotatably provided at both ends of the through rod 14, a worm gear 21 is sleeved and fixedly connected to the left end of the rotating shaft 16, the worm gear 21 is rotatably provided on the inner cavity wall of the mounting plate 13, a transmission rod 22 is rotatably provided at the upper and lower ends of the inner cavity of the mounting plate 13, a plurality of groups of worm teeth 2 are provided on the transmission rod 22, the worm teeth 2 are meshed with the worm gear 21, a motor 2 15 is fixedly connected to one side of the upper end surface of the mounting plate 13, and the output end of the motor 2 15 is fixedly connected to one end of the transmission rod 22.

[0028] A liquid discharge pipe 4 is provided on one side of the housing 1 , and a valve 28 is provided on the liquid discharge pipe 4 .

[0029] A rotating rod 17 is fixedly connected to the right end of the rotating shaft 16 . The rotating rod 17 is rotatably disposed on the penetrating rod 14 via the rotating shaft 16 . One side of the rotating rod 17 is in contact with the right end surface of the penetrating rod 14 .

[0030] Trapezoidal blocks 18 are slidably connected to both sides of the rotating rod 17 through the storage groove 27. A spring 20 is fixedly connected to one end of the trapezoidal block 18. The end of the spring 20 away from the trapezoidal block 18 is fixedly connected to the inner cavity of the storage groove 27. Blades 19 are fixedly connected to both sides of the trapezoidal block 18, and the blades 19 are in contact with the inner wall of the storage groove 27.

[0031] Specifically, during the use of the existing centrifuge, although the scraper can be used to scrape off the material adhered to the inner wall of the inner shell 5, during the centrifugation process, when some materials are irregular in shape, they may have more edges and corners or protrusions, and these protrusions are easy to contact and rub with the filter holes 6, thereby causing the materials to be stuck in the filter holes 6 and blocking the filter holes 6. The scraper can only scrape the materials adhered to the inner surface of the inner shell 5. When the materials are firmly stuck in the filter holes 6, it is not easy for the scraper to remove them from the filter holes 6, so that when the liquid passes through the filter holes 6, it will be blocked by the blocked materials, thereby affecting the solid-liquid separation efficiency. Therefore, in order to solve the above problems, when the present embodiment is used, the control panel 25 is used to operate, the calcium sulfate solid raw material containing water is added into the inner shell 5, and then the motor 3 24 is used to drive the inner shell 5 to rotate, so that the liquid in the calcium sulfate solid raw material can be thrown out through the filter hole 6 under the action of centrifugal force, and the thrown out liquid can be discharged through the drain pipe 4 by opening the valve 28, and when the inner shell 5 rotates, the motor 1 8 drives the gear 9 to rotate intermittently, and when the gear 9 rotates, the gear ring 7 also rotates, and when the penetration rod 14 is aligned with the filter hole 6 , the gear ring 7 stops rotating. At this time, the electric push rod 11 is used to drive the mounting plate 13 to move, so that the penetration rod 14 passes through the filter hole 6, and the calcium sulfate solid raw material blocked on the inner wall of the filter hole 6 can be pushed out and dropped into the inner shell 5. Then the penetration rod 14 is reset, and the gear ring 7 continues to rotate, so that the penetration rod 14 is aligned with the next row of filter holes 6. This is repeated, and all the filter holes 6 blocked by the calcium sulfate solid raw material can be dredged during the centrifugation process, thereby avoiding the situation in which the filter hole 6 is blocked by the calcium sulfate solid raw material during the centrifugation process, thereby affecting the solid-liquid separation efficiency; Furthermore, since the calcium sulfate solid raw material contains water, the calcium sulfate solid raw material may have a certain viscosity. When the end of the penetration rod 14 contacts the calcium sulfate solid raw material, the calcium sulfate solid raw material may adhere to the end of the penetration rod 14. When the penetration rod 14 is removed from the filter hole 6, the calcium sulfate solid raw material adhered to the end of the penetration rod 14 may fall to the outside of the inner shell 5, thereby causing trouble. Therefore, in order to avoid this situation, when the penetration rod 14 passes through the filter hole 6, the motor 2 15 drives the transmission rod 22 to rotate, so that the rotation of the plurality of groups of worm gears 2 By using the plurality of rotating shafts 16 to rotate simultaneously, the rotating rod 17 can be rotated on the right end surface of the penetration rod 14. Since the rotating rod 17 is in contact with the right end surface of the penetration rod 14, the calcium sulfate solid raw material adhering to the right end surface of the penetration rod 14 can be scraped off, thereby avoiding the situation that when the end of the penetration rod 14 contacts with the calcium sulfate solid raw material, the calcium sulfate solid raw material adhering to the end of the penetration rod 14 falls to the outside of the inner shell 5 when the penetration rod 14 is removed from the filter hole 6, thereby ensuring the normal solid-liquid separation work; Furthermore, the reason why the calcium sulfate solid raw material blocks the filter hole 6 may be that some of the calcium sulfate solid raw materials are irregular in shape. Therefore, although the through rod 14 can be used to push down the irregularly shaped calcium sulfate solid raw materials, these irregularly shaped calcium sulfate solid raw materials still have a high probability of continuing to block the remaining filter holes 6, thereby affecting the dredging effect and requiring repeated dredging. At the same time, it also affects the solid-liquid separation efficiency. Therefore, in order to avoid this problem, when the through rod 14 enters the filter hole 6 from the outside of the inner shell 5, the trapezoidal block 18 will enter the receiving groove 27 under the action of extrusion, and the spring 20 will be compressed. When the trapezoidal block 18 is removed from the filter hole 6, the spring 20 is restored. During this process, the blade 19 will also move. At the same time, in conjunction with the rotation of the rotating rod 17, a cutting force can be applied to the calcium sulfate solid raw material that blocks the filter hole 6, so that the irregular calcium sulfate solid raw material can be cut off, thereby avoiding the irregular calcium sulfate solid raw material being pushed down by the through rod 14. There is still a high probability that the solid raw material will continue to clog the remaining filter holes 6, which ensures the dredging effect, eliminates the process of repeated dredging, and further improves the solid-liquid separation efficiency. In addition, since the blade 19 is in contact with the inner wall of the receiving groove 27, when the penetrating rod 14 moves from the inside of the inner shell 5 to the outside of the inner shell 5, the blade 19 will retract into the receiving groove 27 due to extrusion. In this process, the solid raw material of calcium sulfate adhered to the surface of the blade 19 will be scraped off, thereby avoiding the situation where the solid raw material of calcium sulfate adheres to the end of the blade 19, thereby affecting the cutting effect of the blade 19.

[0032] In this embodiment, Figure 4 As shown, a mounting rod 3 is fixedly connected to one side of the upper end surface of the outer shell 1 , and an anti-sticking plate 26 is fixedly connected to one end of the mounting rod 3 , and the anti-sticking plate 26 is in contact with the inner wall of the inner shell 5 .

[0033] Specifically, during the centrifugal treatment of the calcium sulfate solid raw material, when the inner shell 5 rotates, its inner wall will scrape against the edge of the anti-sticking plate 26, so that the calcium sulfate solid raw material adhered to the inner wall of the inner shell 5 can be scraped off, thereby avoiding the situation where the calcium sulfate solid raw material adheres to the inner wall of the inner shell 5, making it difficult to separate and affecting the subsequent raw material collection effect.

[0034] A calcium sulfate whisker production process comprises the following specific steps: S1. Add calcium sulfate solid into a high-speed disperser and add water to disperse it, then transfer it into a crystal growth kettle, use steam to heat it to 160-170℃ for crystal growth, and keep it warm for several hours; S2. After the heat preservation, the centrifuge is pumped into the centrifuge for solid-liquid separation, and the mother liquor is reused in the dispersion process; S3, drying the filter cake to obtain calcium sulfate whiskers, which can be coated by adding a surface coating agent in the crystal growth process or the drying process.

[0035] Working principle: Use the control panel 25 to operate, add the calcium sulfate solid raw material containing water into the inner shell 5, and then use the motor 3 24 to drive the inner shell 5 to rotate, so that the liquid in the calcium sulfate solid raw material can be thrown out through the filter hole 6 under the action of centrifugal force, and the thrown out liquid can be discharged through the drain pipe 4 by opening the valve 28. During the centrifugal treatment of the calcium sulfate solid raw material, when the inner shell 5 rotates, its inner wall will form a scrape with the edge of the anti-sticking plate 26, and the calcium sulfate solid raw material adhered to the inner wall of the inner shell 5 can be scraped off, thereby avoiding the calcium sulfate solid raw material adhering to the inner wall of the inner shell 5, which makes it difficult to separate and affects the subsequent The raw material collection effect is continued, and when the inner shell 5 rotates, the motor 8 drives the gear 9 to rotate intermittently. When the gear 9 rotates, the ring gear 7 also rotates. When the penetration rod 14 is aligned with the filter hole 6, the ring gear 7 stops rotating. At this time, the electric push rod 11 drives the mounting plate 13 to move, so that the penetration rod 14 passes through the filter hole 6, and the calcium sulfate solid raw material blocked in the inner wall of the filter hole 6 can be pushed out and dropped into the inner shell 5, and then the penetration rod 14 is reset, and the ring gear 7 continues to rotate, so that the penetration rod 14 is aligned with the next row of filter holes 6, and this is repeated. In the centrifugal process, all the filter holes 6 blocked by the calcium sulfate solid raw materials can be dredged. This avoids the situation in which the filter hole 6 is blocked by the calcium sulfate solid raw material during the centrifugation process, thereby affecting the solid-liquid separation efficiency; and, since the calcium sulfate solid raw material contains moisture, the calcium sulfate solid raw material may have a certain viscosity. When the end of the penetration rod 14 contacts the calcium sulfate solid raw material, the calcium sulfate solid raw material may adhere to the end of the penetration rod 14. When the penetration rod 14 is removed from the filter hole 6, the calcium sulfate solid raw material adhered to the end of the penetration rod 14 may fall to the outside of the inner shell 5, causing trouble. Therefore, in order to avoid this situation, when the penetration rod 14 passes through the filter hole 6, the motor 15 drives The transmission rod 22 rotates, and the multiple rotating shafts 16 rotate simultaneously under the rotation of the multiple groups of worm gears 2, and the rotating rod 17 rotates on the right end surface of the penetration rod 14. Since the rotating rod 17 fits the right end surface of the penetration rod 14, the calcium sulfate solid raw material adhering to the right end surface of the penetration rod 14 can be scraped off, thereby avoiding the situation that when the end of the penetration rod 14 contacts with the calcium sulfate solid raw material, the calcium sulfate solid raw material adhering to the end of the penetration rod 14 falls to the outside of the inner shell 5 when the penetration rod 14 is removed from the filter hole 6, thereby ensuring the normal solid-liquid separation work;Furthermore, the reason why the calcium sulfate solid raw material blocks the filter hole 6 may be that some of the calcium sulfate solid raw materials are irregular in shape. Therefore, although the through rod 14 can be used to push down the irregularly shaped calcium sulfate solid raw materials, these irregularly shaped calcium sulfate solid raw materials still have a high probability of continuing to block the remaining filter holes 6, thereby affecting the dredging effect and requiring repeated dredging. At the same time, it also affects the solid-liquid separation efficiency. Therefore, in order to avoid this problem, when the through rod 14 enters the filter hole 6 from the outside of the inner shell 5, the trapezoidal block 18 will enter the receiving groove 27 under the action of extrusion, and the spring 20 will be compressed. When the trapezoidal block 18 is removed from the filter hole 6, the spring 20 is restored. During this process, the blade 19 will also move. At the same time, in conjunction with the rotation of the rotating rod 17, a cutting force can be applied to the calcium sulfate solid raw material that blocks the filter hole 6, so that the irregular calcium sulfate solid raw material can be cut off, thereby avoiding the irregular calcium sulfate solid raw material being pushed down by the through rod 14. The solid raw material still has a high probability of continuing to block the remaining filter holes 6, which ensures the dredging effect, eliminates the process of repeated dredging, and further improves the solid-liquid separation efficiency. In addition, since the blade 19 is in contact with the inner wall of the receiving groove 27, when the penetrating rod 14 moves from the inside of the inner shell 5 to the outside of the inner shell 5, the blade 19 will be retracted into the receiving groove 27 due to extrusion. In this process, the calcium sulfate solid raw material adhered to the surface of the blade 19 will be scraped off, thereby avoiding the situation where the calcium sulfate solid raw material adheres to the end of the blade 19, thereby affecting the cutting effect of the blade 19. ;

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A centrifuge for producing calcium sulfate whiskers, comprising a housing (1), characterized in that: A control panel (25) is provided on one side of the outer wall of the outer shell (1); a support leg (29) is fixedly connected to the lower end surface of the outer shell (1); a partition (30) is fixedly connected to one side of the inner cavity wall of the outer shell (1); an inner shell (5) is rotatably provided at the middle of the upper end surface of the partition (30); a plurality of filter holes (6) are provided on the inner shell (5); and a surrounding dredging mechanism is also provided on the inner shell (5) to prevent the filter holes from being blocked by solid calcium sulfate raw materials; The surrounding dredging mechanism comprises a gear ring (7) sleeved and rotatably arranged on the upper side of the outer ring of the inner shell (5); one side of the gear ring (7) is fixedly connected to an L-shaped rod (10); one side of the L-shaped rod (10) is slidably connected to two sliding rods (12); one end of the sliding rod (12) is fixedly connected to a mounting plate (13); a plurality of through rods (14) are rotatably arranged on the right end surface of the mounting plate (13); the plurality of through rods (14) can simultaneously pass through the filter hole (6); and when the through rods (14) pass through the filter hole (6), they are in contact with the inner wall of the filter hole (6); two ends of the through rods (14) are rotatably arranged with rotating shafts (16); the left end of the rotating shaft (16) is sleeved and fixedly connected to a worm gear (21 ), the worm wheel (21) is rotatably arranged on the inner cavity wall of the mounting plate (13), a transmission rod (22) is rotatably arranged at the upper and lower ends of the inner cavity of the mounting plate (13), a plurality of groups of worm teeth (2) are arranged on the transmission rod (22), the worm teeth (2) and the worm wheel (21) are meshed with each other, a motor 2 (15) is fixedly connected to one side of the upper end surface of the mounting plate (13), an output end of the motor 2 (15) is fixedly connected to one end of the transmission rod (22), a rotating rod (17) is fixedly connected to the right end of the rotating shaft (16), the rotating rod (17) is rotatably arranged on the through rod (14) through the rotating shaft (16), and one side of the rotating rod (17) is in contact with the right end surface of the through rod (14).

2. A centrifuge for producing calcium sulfate whiskers according to claim 1, characterized in that: A third motor (24) is fixedly connected to the middle portion of the lower end surface of the partition (30), and an output end of the third motor (24) is fixedly connected to the bottom of the inner shell (5).

3. A centrifuge for producing calcium sulfate whiskers according to claim 1, characterized in that: The inner ring of the gear ring (7) is provided with a plurality of tooth blocks (23); a gear (9) is rotatably provided on one side of the upper end of the inner shell (5); the gear (9) and the tooth block (23) are meshed with each other; a motor 1 (8) is fixedly connected to one side of the upper end of the inner shell (5); and an output end of the motor 1 (8) is fixedly connected to the gear (9).

4. A centrifuge for producing calcium sulfate whiskers according to claim 1, characterized in that: One side of the L-shaped rod (10) is fixedly connected to an electric push rod (11), and a piston end of the electric push rod (11) is fixedly connected to one side of a mounting plate (13).

5. A centrifuge for producing calcium sulfate whiskers according to claim 1, characterized in that: A liquid discharge pipe (4) is provided on one side of the housing (1), and a valve (28) is provided on the liquid discharge pipe (4).

6. A centrifuge for producing calcium sulfate whiskers according to claim 1, characterized in that: Both sides of the rotating rod (17) are slidably connected to a trapezoidal block (18) via a receiving groove (27); one end of the trapezoidal block (18) is fixedly connected to a spring (20); one end of the spring (20) away from the trapezoidal block (18) is fixedly connected to the inner cavity of the receiving groove (27); both sides of the trapezoidal block (18) are fixedly connected to a blade (19); the blade (19) is in contact with the inner wall of the receiving groove (27).

7. A centrifuge for producing calcium sulfate whiskers according to claim 1, characterized in that: A mounting rod (3) is fixedly connected to one side of the upper end surface of the outer shell (1), and an anti-sticking plate (26) is fixedly connected to one end of the mounting rod (3), and the anti-sticking plate (26) is in contact with the inner wall of the inner shell (5).

8. A calcium sulfate whisker production process, characterized in that: The specific steps include: S1. Add calcium sulfate solid into a high-speed disperser and add water to disperse it, then transfer it into a crystal growth kettle, use steam to heat it to 160-170℃ for crystal growth, and keep it warm for several hours; S2. After the heat preservation, the centrifuge is pumped into the centrifuge for solid-liquid separation, and the mother liquor is reused in the dispersion process; S3, drying the filter cake to obtain calcium sulfate whiskers, which can be coated by adding a surface coating agent in the crystal growth process or the drying process.

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