A gypsum slurry mixing device
The gypsum slurry mixing device, which combines an atomized water curtain and a vacuum pump, solves the problems of air bubbles and dust during the mixing process, improves product quality and operating environment, and achieves efficient and uniform mixing effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINJIANG JIATAI RUIHENG NEW MATERIAL TECHNOLOGY CO LTD
- Filing Date
- 2025-07-18
- Publication Date
- 2026-06-26
AI Technical Summary
Existing gypsum slurry mixing processes easily introduce air bubbles and dust, leading to a decrease in the strength, density, and surface smoothness of the products, and causing serious pollution to the operating environment.
A gypsum slurry mixing device combining an atomized water curtain mechanism and a vacuum pump is used. The dust is pre-wetted by the atomized water curtain and stirred in a vacuum environment, which reduces the generation of bubbles and the escape of dust, ensuring the airtightness and dust removal effect of the mixing process.
It significantly improves the density and surface smoothness of gypsum products, improves the operating environment, reduces raw material waste and pollution, and achieves efficient and uniform mixing results.
Smart Images
Figure CN224408020U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of mixing devices, and in particular relates to a gypsum slurry mixing device. Background Technology
[0002] Gypsum slurry is a slurry-like fluid formed by mixing gypsum powder (mainly calcium sulfate hemihydrate) with water. Stirring is an essential step, mainly because it can quickly break up clumps of gypsum powder, ensure uniform mixing of water and powder, fully activate the hydration reaction of gypsum powder, and help to expel some of the trapped air, ultimately forming a homogeneous and fluid slurry, laying the foundation for subsequent casting and molding.
[0003] However, the stirring process itself also has some drawbacks:
[0004] 1. Introducing air bubbles: Stirring (especially vigorous stirring) inevitably introduces air into the slurry. If these air bubbles cannot be expelled before the slurry solidifies, they will remain inside or on the surface of the hardened gypsum product, forming pore defects and significantly reducing the product's strength, density, surface smoothness, and aesthetics.
[0005] 2. Dust and splashing risks: Dust is easily generated in the initial stage of dry powder mixing, which may cause inconvenience or pollution to the operating environment and personnel. Utility Model Content
[0006] The purpose of this invention is to provide a gypsum slurry mixing device to solve the problems existing in the prior art.
[0007] To achieve the above objectives, the present invention adopts a gypsum slurry mixing device, including a support leg, a bearing plate above the support leg, a sealed tank above the bearing plate via a fixing plate, a mixing chamber inside the sealed tank, where materials are mixed, a top cover above the sealed tank, a mixing mechanism extending through the top cover into the mixing chamber, the mixing mechanism mixing the materials, and an atomizing water curtain mechanism above the top cover for convenient material input, which performs dust removal at the source during material input. A support platform is provided on one side of the support leg. A water tank is installed above the support platform, and a first micro water pump is connected above the water tank. The first micro water pump is connected to an atomizing water curtain mechanism via the water tank. A support frame is installed above the support platform, and a second micro water pump is installed above the support frame. One end of the second micro water pump is connected to the water tank, and the other end extends through a water pipe into the top of the mixing chamber via the sealed tank. A vacuum pump is installed above the support platform, and the vacuum pump extends into the sealed tank via a vacuum tube. The vacuum pump significantly reduces the air content in the chamber, eliminating the main cause of air entrainment from a physical perspective and reducing bubble generation. The bottom of the sealed tank and the mixing chamber are equipped with discharge ports for easy material discharge.
[0008] Preferably, the atomizing water curtain mechanism includes an acrylic cover, a dispersion cone, vertical pipes, a ring pipe, an ultrasonic atomizing nozzle, a feeding funnel, and a heating wire. The acrylic cover is made of transparent material and is located above the top cover. The dispersion cone is located inside the acrylic cover and has a Teflon coating on its surface. Multiple vertical pipes are provided and are all located on the inner periphery of the acrylic cover. The ring pipes are horizontally located on the outer periphery of the multiple vertical pipes and are arranged vertically. The interior of the ring pipes is connected to the interior of the vertical pipes to achieve vertical water flow. Multiple ultrasonic atomizing nozzles are located on the side of the vertical pipes. The feeding funnel is located above the acrylic cover. The heating wire is located inside the dispersion cone and can be powered by a connecting wire passing through the acrylic cover. A first micro water pump is connected to the vertical pipes through a water pipe to supply water to the vertical pipes and the ring pipes.
[0009] Preferably, the stirring mechanism includes a servo motor, a stirring shaft, a bottom stirring blade, an upper stirring blade, a rotating ring, and scrapers. The servo motor is located above the top cover and its output end passes through the top cover. One end of the stirring shaft is connected to the output end of the servo motor. The bottom stirring blade is located on the end of the stirring shaft away from the servo motor. Multiple upper stirring blades are provided and are all located on the stirring shaft. The rotating ring is located on the outer periphery of the upper stirring blades. Multiple scrapers are provided and are distributed in an array.
[0010] Preferably, a water valve is installed on the water pipe of the second micro water pump.
[0011] Preferably, the bottom stirring blades are inclined downwards.
[0012] Preferably, the pressure is evacuated to -0.08 ~ -0.095 MPa before stirring.
[0013] Preferably, the ultrasonic atomizing nozzle has an aperture of 0.3-0.5 mm, generating 10-50 μm micron-level water mist to form a closed water curtain barrier.
[0014] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0015] This utility model's atomizing water curtain mechanism is driven by a first micro water pump, which generates micron-level water mist when powder is fed, pre-wetting and coating the surface of gypsum powder particles, suppressing the escape of most dust, improving the working environment and avoiding raw material loss. A vacuum pump draws the stirring chamber to a negative pressure environment of -0.09MPa, physically eliminating the space where air exists. Combined with a low-speed stirring mechanism, the amount of bubble generation is greatly reduced, significantly improving the density and surface smoothness of the product. A second micro water pump independently injects water into the stirring chamber, which is controlled separately from the atomizing water, ensuring that the hydration reaction is fully and evenly carried out. The entire process is closed to prevent splashing, the vacuum environment shortens the degassing time, and the bottom discharge port allows the material to be discharged from the bottom. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 A three-dimensional view of the overall structure of a gypsum slurry mixing device;
[0018] Figure 2 A side view of a gypsum slurry mixing device;
[0019] Figure 3 A bottom-view perspective view of a gypsum slurry mixing device;
[0020] Figure 4 This is a schematic diagram of the atomizing water curtain mechanism;
[0021] Figure 5 This is a top view of the atomizing water curtain mechanism;
[0022] Figure 6 This is a schematic diagram of the stirring mechanism;
[0023] Figure 7 This is an enlarged view of the stirring mechanism.
[0024] Figure 8 This is a schematic diagram of the internal structure of the dispersion cone;
[0025] Figure 9 This is an exploded view of the sealed container and the stirring chamber.
[0026] In the above figures, 1. Support leg, 2. Bearing plate, 3. Sealed tank, 4. Fixing plate, 5. Top cover, 6. Stirring mechanism, 601. Servo motor, 602. Stirring shaft, 603. Bottom stirring blade, 604. Upper stirring blade, 605. Rotating ring, 606. Scraper, 7. Atomizing water curtain mechanism, 701. Acrylic cover plate, 702. Dispersion cone, 703. Ring pipe, 704. Ultrasonic atomizing nozzle, 705. Feed funnel, 706. Heating wire, 707. Vertical pipe, 8. Support platform, 9. Water tank, 10. First micro water pump, 11. Water pipe, 12. Bearing frame, 13. Second micro water pump, 14. Water valve, 15. Vacuum pump, 16. Vacuum tube, 17. Discharge port, 18. Stirring chamber. Detailed Implementation
[0027] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0028] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0029] Example 1, as Figure 1-9 As shown, the specific design of the above-mentioned key components is described below: A gypsum slurry mixing device includes a support leg 1, a bearing plate 2 above the support leg 1, a sealed tank 3 above the bearing plate 2 via a fixing plate 4, a mixing chamber 18 inside the sealed tank 3, where the material is mixed; a top cover 5 above the sealed tank 3, with a mixing mechanism 6 extending through the top cover 5 into the mixing chamber 18, which mixes the material; an atomizing water curtain mechanism 7 above the top cover 5 for convenient material input, which removes dust at the source when the material is input; a support platform 8 on one side of the support leg 1, and a [missing information - likely a device or component] above the support platform 8. A water tank 9 is connected to a first micro water pump 10. The first micro water pump 10 is connected to the atomizing water curtain mechanism 7 via the water tank 9. A support frame 12 is set above the support platform 8. A second micro water pump 13 is set above the support frame 12. One end of the second micro water pump 13 is connected to the water tank 9, and the other end extends through the water pipe 11 through the sealed tank 3 and into the upper part of the stirring chamber 18. A vacuum pump 15 is set above the support platform 8. The vacuum pump 15 extends into the sealed tank 3 through the vacuum pipe 16. The vacuum pump 15 greatly reduces the air content in the chamber, eliminates the main cause of air entrainment from the physical space, and reduces the generation of bubbles. The bottom of the sealed tank 3 and the stirring chamber 18 are provided with a discharge port 17 for convenient discharge.
[0030] The gypsum slurry mixing device, with an atomizing water curtain mechanism 7 positioned above the top cover 5, forms a fine water mist curtain at the source of gypsum powder input, effectively capturing and settling dust, significantly improving the working environment and reducing raw material waste. Secondly, a crucial vacuum pump 15 is introduced, which actively reduces the air content within the sealed mixing chamber 18 by creating a vacuum, directly eliminating the main cause of air being entrained into the slurry by the mixing paddle. This greatly suppresses the generation of air bubbles during mixing, which is essential for gypsum products requiring high density and low porosity, such as molds and building materials. The design of the sealed tank 3 and the mixing chamber 18 ensures a sealed mixing environment, comprehensively improving mixing efficiency and slurry quality.
[0031] The working principle of this device revolves around sealing, dust removal, defoaming, and stirring. The gypsum powder material is fed into the device through the atomizing water curtain mechanism 7 above the top cover 5. Upon feeding, the atomizing water curtain mechanism 7 uses a first micro water pump 10 to draw water from the water tank 9 and atomize it, forming a water curtain covering the feeding port. This immediately envelops and settles the falling dust. The vacuum pump 15 is activated, and the air in the stirring chamber 18 is extracted through the vacuum tube 16 inserted into the sealed tank 3, significantly reducing the air pressure inside the chamber and decreasing the amount of air that can be entrained into the slurry. The stirring mechanism 6 then activates its right servo... Motor 601 drives bottom stirring blade 603 and upper stirring blade 604 to powerfully mix materials in stirring chamber 18, which is close to vacuum or low pressure. At the same time, the second micro water pump 13 can draw water from water tank 9 and spray it into the upper part of stirring chamber 18 through water pipe 11 as needed to precisely control the consistency of slurry. After thorough mixing, the uniformly mixed, low-bubble, and low-dust gypsum slurry is discharged through the discharge port 17 at the bottom. The whole process is completed in a sealed tank 3, which effectively reduces the generation of pollution and bubbles.
[0032] The atomizing water curtain mechanism 7 includes an acrylic cover 701, a dispersing cone 702, vertical pipes 707, annular pipes 703, an ultrasonic atomizing nozzle 704, a feeding funnel 705, and a heating wire 706. The acrylic cover 701 is made of transparent material and is positioned above the top cover 5. The dispersing cone 702 is located inside the acrylic cover 701 and has a Teflon coating on its surface. Multiple vertical pipes 707 are provided, all located on the inner circumference of the acrylic cover 701. The annular pipes 703 are horizontally positioned on the outer circumference of the multiple vertical pipes 707. Multiple ultrasonic atomizing nozzles 704 are arranged on the side of the vertical pipe 707, and multiple nozzles are arranged on the side of the vertical pipe 707. The feed funnel 705 is located above the acrylic cover plate 701. The heating wire 706 is located inside the dispersion cone 702. The heating wire 706 can be powered by a conductor passing through the acrylic cover plate 701. The first micro water pump 10 is connected to the vertical pipe 707 through the water pipe 11, so as to supply water to the vertical pipe 707 and the ring pipe 703.
[0033] The design of this atomizing water curtain mechanism 7 significantly improves the efficiency of source dust removal and the smoothness of material handling. The three-dimensional atomizing water curtain mechanism 7 connects multiple vertical pipes 707 with ultrasonic atomizing nozzles 704 through multi-layer ring pipes 703, forming a three-dimensional water mist curtain that surrounds the material feeding path within the acrylic cover plate 701. This greatly increases the contact area and time between the water mist and the falling gypsum dust, ensuring that the dust is fully captured, wetted, and settled. The Teflon coating on the surface of the dispersion cone 702 effectively prevents the adhesion and accumulation of damp dust, ensuring the long-term reliability of the mechanism. Through operation, the internal heating wire 706 can actively disperse moisture and prevent powder from becoming damp and clumping on the cone surface, solving the problem that traditional water curtains easily cause material caking. The design of the dispersion cone 702 increases the contact time and area between the material and moisture. The acrylic cover plate 701 facilitates observation of the feeding and dust removal effects. The design of the vertical pipe 707 and the ring pipe 703 internally connected ensures uniform water flow and stable pressure, making the water output of each layer of atomizing holes consistent. The overall structure is compactly integrated above the top cover 5, effectively suppressing dust dispersion from the source.
[0034] When the device is in operation, it creates an enclosed dust removal environment. A first micro water pump 10 pumps water from the water tank 9 into the vertical pipe 707. The water flow is delivered to each layer through an internally connected network of vertical pipes 707 and ring pipes 703. When the water reaches the side of the vertical pipe 707, it is broken into extremely fine water mist particles by high-frequency vibration through ultrasonic atomizing nozzles 704. The combined action of multiple vertical pipes 707 and their connected ring pipes 703 forms a three-dimensional water mist barrier from top to bottom and from the outside to the inside within the acrylic cover 701. The gypsum powder is fed from the feed funnel... 705 is fed in, and during its descent, it must pass through a dense water mist curtain. The fine water mist particles rapidly adsorb, encapsulate, and increase the weight of the dust particles, causing them to settle and effectively preventing dust from escaping upwards. When the material impacts or slides over the dispersion cone 702, its Teflon coating minimizes the adhesion of damp material. Simultaneously, the heating wire 706 is energized to moderately heat the dispersion cone 702, evaporating any condensed moisture or humidity, preventing the powder from absorbing moisture and caking on the cone surface, ensuring smooth dispersion and descent into the mixing chamber 18. The entire process achieves efficient, non-adhesive, and sealed dust removal at the source of material feeding.
[0035] The stirring mechanism 6 includes a servo motor 601, a stirring shaft 602, a bottom stirring blade 603, an upper stirring blade 604, a rotating ring 605, and scrapers 606. The servo motor 601 is located above the top cover 5 and its output end passes through the top cover 5. One end of the stirring shaft 602 is connected to the output end of the servo motor 601. The bottom stirring blade 603 is located on the end of the stirring shaft 602 away from the servo motor 601. Multiple upper stirring blades 604 are provided and are all located on the stirring shaft 602. The rotating ring 605 is located on the outer periphery of the upper stirring blades 604. Multiple scrapers 606 are provided and are distributed in an array. A water valve 14 is installed on the water pipe 11 of the second micro water pump 13. The bottom stirring blade 603 is inclined downward. Before stirring, the vacuum is drawn to -0.08 ~ -0.095 MPa. The orifice diameter of the ultrasonic atomizing nozzle is 0.3-0.5mm, which generates 10-50μm micron-level water mist to form a closed water curtain barrier.
[0036] The mixing mechanism 6 significantly improves mixing efficiency, uniformity, and tank cleanliness. The downward tilting design of the bottom mixing blade 603, combined with the multi-layer upper mixing blade 604, forms an efficient axial and radial flow field, powerfully breaking up material clumps and ensuring thorough mixing of the upper and lower layers of gypsum slurry without dead corners. The rotating ring 605 drives the arrayed scrapers 606 to rotate close to the inner wall of the mixing chamber 18, scraping off the adhering slurry in real time, completely solving the problems of material accumulation on the inner wall of traditional mixers, affecting mixing uniformity and discharge cleanliness. The servo motor 601 provides precise speed and torque control to adapt to slurries of different viscosities. A specific vacuum degree of -0.08~-0.095 MPa physically eliminates the main cause of bubble formation. Micron-level water mist of 10-50μm ensures efficient dust removal at the source. The water valve 14 precisely controls the water supply of the second water pump, achieving high-quality mixing with high uniformity, low bubbles, no wall adhesion, and no dust.
[0037] Before mixing, the vacuum pump 15 is activated to reduce the air pressure inside the sealed mixing chamber 18 to -0.08 ~ -0.095 MPa, significantly reducing the amount of air that can be entrained. The material is fed in through the atomizing water curtain mechanism 7. The ultrasonic atomizing nozzle 704 with a diameter of 0.3-0.5mm generates 10-50μm micron-level water mist to form a closed barrier, efficiently capturing dust. The servo motor 601 drives the stirring shaft 602 to drive the inclined bottom stirring blades 603 to generate a strong vortex. At the same time, the multi-layer upper stirring blades 604 enhance the material circulation. The synchronously rotating rotating ring 605 drives the circumferential array scraper 606 to move closely against the chamber wall, continuously scraping off the adhering slurry. As needed, the second micro water pump 13 and the water valve 14 precisely adjust the water volume to replenish water into the chamber. The entire process is carried out in a low-pressure, dynamic cleaning environment, achieving efficient, uniform, and bubble-free mixing of the gypsum slurry, which is finally discharged from the bottom discharge port 17.
[0038] A three-dimensional micron-level water curtain forms a physical barrier at the feeding port, intercepting and settling gypsum dust at the source, significantly improving the working environment, reducing raw material waste, and preventing dust spillage pollution. Pre-vacuuming to -0.08 ~ -0.095MPa before mixing actively eliminates air in the mixing chamber 18, fundamentally inhibiting bubble formation and producing high-density, low-porosity, high-quality gypsum slurry to meet the stringent quality control requirements of molds, building materials, etc. Inclined blades and multi-layered mixing blades create an efficient flow field, ensuring thorough mixing of the upper and lower layers of slurry. The rotating scraper 606 system cleans the tank wall in real time, completely solving the problem of wall adhesion and ensuring batch uniformity and thorough discharge. The servo motor 601 provides precise speed control, the water valve 14 provides quantitative water replenishment, the heating wire 706 prevents sticking, and the vacuum system work in tandem, enabling fully automated operation in a closed environment. This significantly improves production efficiency, slurry stability, and the cleanliness of the production environment, making it suitable for large-scale manufacturing of high-standard gypsum products.
[0039] The contents not described in detail in this specification are existing technologies known to those skilled in the art.
[0040] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. A gypsum slurry mixing device, characterized in that, The system includes a support leg, a support plate on top of the support leg, a sealed tank on top of the support plate via a fixing plate, a stirring chamber inside the sealed tank where materials are stirred, a top cover on top of the sealed tank, a stirring mechanism extending through the top cover into the stirring chamber to stir the materials, and an atomizing water curtain mechanism on top of the top cover for easy material input, which removes dust at the source when materials are input. A support platform is located on one side of the support leg, a water tank is located on top of the support platform, a first micro water pump is connected to the top of the water tank, and the first micro water pump is connected to the atomizing water curtain mechanism via the water tank. A support frame is located on top of the support platform, and a second micro water pump is located on top of the support frame. One end of the second micro water pump is connected to the water tank, and the other end extends through the sealed tank into the stirring chamber via a water pipe. A vacuum pump is located on top of the support platform. Discharge ports for easy material discharge are located at the bottom of the sealed tank and the stirring chamber.
2. The gypsum slurry mixing device according to claim 1, characterized in that, The atomizing water curtain mechanism includes an acrylic cover, a dispersion cone, vertical pipes, a ring pipe, ultrasonic atomizing nozzles, a feeding funnel, and a heating wire. The acrylic cover is made of transparent material and is located on top of the cover. The dispersion cone is located inside the acrylic cover and has a Teflon coating on its surface. Multiple vertical pipes are provided and are located on the inner periphery of the acrylic cover. The ring pipes are horizontally located on the outer periphery of the multiple vertical pipes and are arranged vertically. The interior of the ring pipes is connected to the interior of the vertical pipes to achieve vertical water flow. Multiple ultrasonic atomizing nozzles are located on the side of the vertical pipes. The feeding funnel is located above the acrylic cover. The heating wire is located inside the dispersion cone and can be powered by a connecting wire passing through the acrylic cover. A first micro water pump is connected to the vertical pipes through a water pipe to supply water to the vertical pipes and the ring pipes.
3. The gypsum slurry mixing device according to claim 2, characterized in that, The stirring mechanism includes a servo motor, a stirring shaft, a bottom stirring blade, an upper stirring blade, a rotating ring, and scrapers. The servo motor is located above the top cover and its output end passes through the top cover. One end of the stirring shaft is connected to the output end of the servo motor. The bottom stirring blade is located on the end of the stirring shaft away from the servo motor. Multiple upper stirring blades are provided and are all located on the stirring shaft. The rotating ring is located on the outer periphery of the upper stirring blades. Multiple scrapers are provided and are distributed in an array.
4. The gypsum slurry mixing device according to claim 3, characterized in that, A water valve is installed on the water pipe of the second micro water pump.
5. The gypsum slurry mixing device according to claim 4, characterized in that, The bottom stirring blades are inclined downwards.
6. The gypsum slurry mixing device according to claim 5, characterized in that, Vacuum the material to -0.08 to -0.095 MPa before stirring.
7. A gypsum slurry mixing device according to claim 6, characterized in that, The ultrasonic atomizing nozzle has an aperture of 0.3-0.5 mm, producing 10-50 μm micron-level water mist to form a closed water curtain barrier.