A device for preparing a finishing plaster
By using a central shaft to drive the stirring rod and scraper in the plaster preparation device, combined with the mixing of water droplets from the piston and water spray pipe, the problem of high-density raw material aggregation was solved, achieving uniform mixing of plaster and improving its strength performance.
Patent Information
- Application Number
- CN202510305414.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-14
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2045-03-14
AI Technical Summary
In the current plastering process, dense raw materials tend to aggregate downwards, resulting in uneven mixing and affecting flexural strength, compressive strength, and tensile bond strength.
The mixing mechanism is formed by using the central shaft inside the cylinder to drive the stirring rod and scraper, combined with the up-and-down movement of the piston and the mixing of water droplets from the water spray pipe. This mixes the raw materials as they fall, preventing denser raw materials from pooling downwards.
This process achieves uniform mixing of the internal materials of plaster, improving flexural strength, compressive strength, and tensile bond strength.
Smart Images
Figure CN119871676B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of plaster production technology, specifically to a surface plaster preparation device. Background Technology
[0002] Plaster is generally divided into surface plaster, base plaster, and lightweight plaster. According to technical specifications, surface plaster has higher flexural strength, compressive strength, and tensile bond strength than base plaster and lightweight plaster. Therefore, the production requirements for surface plaster are higher.
[0003] The existing plastering preparations are all made by mixing various raw materials in a certain proportion and then adding water and stirring. In this method, the denser raw materials tend to sink more easily than the less dense raw materials, resulting in uneven mixing of the internal materials of the plaster. This affects the flexural strength, compressive strength and tensile bond strength of the plaster. Although flipping the plaster can improve the uniformity of the mixing of the internal materials to some extent, the effect is not ideal. Summary of the Invention
[0004] To address the problems existing in the prior art, the present invention provides a surface plaster preparation apparatus to solve at least one of the aforementioned technical problems.
[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solution:
[0006] A surface plaster preparation device includes a cylinder and a discharge pipe disposed at the bottom of the cylinder. A first valve is installed on the discharge pipe. A central shaft capable of rotating relative to the cylinder is installed inside the cylinder. A plurality of stirring rods are circumferentially arranged on the central shaft. A piston capable of moving up and down along the cylinder is installed inside the cylinder. A scraper is disposed at one end of each stirring rod near the cylinder. The scraper, stirring rods, and central shaft form a stirring mechanism. A feed pipe and a water spray pipe are fixed near the top of the cylinder. A fan is connected to the end of the feed pipe away from the cylinder. A first bypass pipe is connected to the top of the feed pipe. A feed trough is fixed to the end of the first bypass pipe not connected to the feed pipe. An exhaust port and a filter screen for blocking the exhaust port are disposed near the top of the cylinder. When the piston moves to its highest position: there is a gap between the stirring mechanism and the piston. The feed pipe, water spray pipe, and exhaust port are all located between the piston and the stirring mechanism and close to the piston.
[0007] Preferably, the filter screen is disposed on the outside of the cylinder and is detachably connected to the cylinder.
[0008] Preferably, a water mist nozzle communicating with the interior of the cylinder is embedded in the cylinder body at a position corresponding to the position of the water spray pipe, and the water spray pipe is connected to the water mist nozzle; a second bypass pipe is provided on the water spray pipe, a second valve is installed on the second bypass pipe, and a water inlet hole communicating with the interior of the cylinder body is provided in the cylinder body at a position corresponding to the position of the second bypass pipe, and the second bypass pipe is connected to the water inlet hole.
[0009] Preferably, the plurality of stirring rods are arranged circumferentially along the central axis and arranged in a row in the vertical direction, with a scraper fixed on each row of stirring rods; the scraper and the central axis are at the same height.
[0010] Preferably, each row of stirring rods includes a first stirring rod and a second stirring rod, the length of the first stirring rod is greater than the length of the second stirring rod, and the first stirring rod and the second stirring rod are spaced apart; the scraper is connected to the first stirring rod, and the scraper is provided with an extension portion extending towards the second stirring rod at the position corresponding to the second stirring rod, the width of the extension portion is greater than the diameter of the second stirring rod, wherein the width of the extension portion refers to the distance from the bottom end of the extension portion to the top end of the extension portion.
[0011] Preferably, a motor for driving the central shaft to rotate is installed on the cylinder.
[0012] Preferably, the motor is fixed to the bottom surface of the cylinder.
[0013] Preferably, a hydraulic cylinder is connected to the top of the piston, the hydraulic cylinder is fixed on a bracket, and a support plate for supporting the blower and a support frame for supporting the feed pipe are installed on the bracket.
[0014] Preferably, the first bypass pipe is inclined, with the height of the end closer to the fan being greater than the height of the other end.
[0015] When using the plastering gypsum preparation device provided by this invention, the piston is initially in its highest position. The powdered raw material for preparing plastering gypsum can fall into the feed pipe through the feed chute and the first bypass pipe. The blower blows the falling raw material into the cylinder from the side. At the same time, the water spray pipe sprays water while the rotating shaft drives the scraper to rotate, generating airflow disturbance, causing the raw material and water droplets to collide and mix in the upper part of the cylinder. After the raw material is conveyed, the hydraulic cylinder is controlled to press down the piston, increasing the activity of molecules and accelerating the falling speed of the raw material. When the raw material falls to the position of the stirring mechanism, the stirring mechanism stirs it a second time, finally forming plastering gypsum. After the plastering gypsum is formed, the first valve is opened, and the hydraulic cylinder is controlled to fall until it is close to the stirring mechanism to assist in the discharge of plastering gypsum. At the same time as the piston falls, it can scrape off the plastering gypsum on the upper part of the cylinder. The rotation of the central shaft drives the scraper to scrape off the plastering gypsum on the lower part of the cylinder, making it less likely for plastering gypsum to remain in the cylinder. Therefore, it can be seen that when preparing surface plaster gypsum, the mixing and stirring process of the surface plaster gypsum preparation device of this application is mainly completed in the downward state of the upper space of the cylinder. When water is mixed with raw materials, it is mainly mixed with them in the form of water droplets. Compared with the method of directly adding raw materials into water and stirring, it effectively avoids the situation that raw materials with higher density are more likely to sink downwards than raw materials with lower density, so that the internal materials of the plaster gypsum are more evenly mixed. Attached Figure Description
[0016] Figure 1 A schematic diagram of the surface plaster preparation device in the embodiment is shown;
[0017] Figure 2 It shows Figure 1 Enlarged view at point A;
[0018] Figure 3 A schematic diagram of the stirring mechanism is shown;
[0019] Marked in the attached diagram:
[0020] Cylinder 100, discharge pipe 101, first valve 102, central shaft 103, stirring rod 104, first stirring rod 104-1, second stirring rod 104-2, piston 105, scraper 106, extension 106-1, feed pipe 107, fan 108, bypass pipe 109, feed trough 110, water spray pipe 111, motor 112, filter screen 113, water mist nozzle 114, second bypass pipe 115, second valve 116, water inlet 117, hydraulic cylinder 118, bracket 119, support plate 120, support frame 121. Detailed Implementation
[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0022] For examples, please refer to Figure 1 This application provides a surface plaster preparation device, including a cylinder 100 and a discharge pipe 101 disposed at the bottom of the cylinder. A first valve 102 is installed on the discharge pipe. A central shaft 103 capable of rotating relative to the cylinder is installed inside the cylinder. Generally, a motor 112 is connected to the central shaft, which drives the central shaft to rotate. The motor can be installed inside or outside the cylinder, as is well known to those skilled in the art. In this embodiment, the motor is preferably fixed to the bottom surface of the cylinder. A plurality of stirring rods 104 are arranged circumferentially on the central shaft. A piston 105 capable of moving up and down along the cylinder is installed inside the cylinder. A hydraulic cylinder 118 is connected to the top of the piston to drive the piston to move up and down. The hydraulic cylinder is fixed on a bracket 119, which can be disposed separately on the bottom surface or fixed on the cylinder, without specific limitation. The bracket can also be equipped with... The cylinder is equipped with a support plate 120 for supporting the blower and a support frame 121 for supporting the feed pipe, wherein the support frame can be a triangular support frame, a support pipe, etc.; a scraper 106 is provided at one end of the stirring rod near the cylinder body, and the scraper, the stirring rod, and the central shaft form a stirring mechanism; a feed pipe 107 and a water spray pipe 111 are fixed on the cylinder body near the top, the end of the feed pipe away from the cylinder body is connected to the blower 108, the top of the feed pipe is connected to the first bypass pipe 109, and the end of the first bypass pipe not connected to the feed pipe is fixed to the feed trough 110; an exhaust port and a filter screen 113 for blocking the exhaust port are provided on the cylinder body near the top; when the piston moves to the highest position: there is a gap between the stirring mechanism and the piston, and the feed pipe, the water spray pipe, and the exhaust port are all located between the piston and the stirring mechanism and close to the piston.
[0023] When the above-mentioned plaster preparation device is in use, the piston is initially in its highest position. The powdered raw material for plaster preparation can fall into the feed pipe through the feed chute and the first bypass pipe. The blower blows the falling raw material into the cylinder from the side. At the same time, the water spray pipe sprays water while the rotating shaft drives the scraper to rotate, generating airflow disturbance. This causes the raw material and water droplets to collide and mix in the upper part of the cylinder. After the raw material is fed, the hydraulic cylinder is controlled to press down the piston, increasing the activity of the molecules and accelerating the falling speed of the mixed raw material. When the raw material falls to the position of the stirring mechanism, the stirring mechanism stirs it a second time, finally forming plaster. After the plaster is formed, the first valve is opened, and the hydraulic cylinder is controlled to fall until it is close to the stirring mechanism to assist in the discharge of plaster. As the piston falls, it can scrape off the plaster on the upper part of the cylinder. The rotation of the central shaft drives the scraper to scrape off the plaster on the lower part of the cylinder, making it less likely for plaster to remain in the cylinder. It should be noted that the feed trough and the first bypass pipe can be set up as one set, and pre-mixed powdered raw materials can be fed in during feeding. Alternatively, multiple sets can be set up, and different raw materials can be fed separately and mixed with water droplets in the cylinder. No specific limitation is made here.
[0024] As can be seen from the above, when preparing surface plaster gypsum, the mixing and stirring process of the surface plaster gypsum preparation device of this application is mainly completed in the downward state of the upper space of the cylinder. When water is mixed with raw materials, it is mainly mixed with them in the form of water droplets. Compared with the method of directly adding raw materials to water and stirring, it effectively avoids the situation that raw materials with higher density are more likely to sink downwards than raw materials with lower density, so that the internal materials of the plaster gypsum are more evenly mixed.
[0025] In actual manufacturing, the first bypass pipe is preferably inclined, with the height of the end closer to the fan being greater than the height of the other end. The general inclination angle relative to the horizontal plane can be about 45°-60°.
[0026] As a preferred implementation method, see [link to relevant documentation]. Figure 2 The cylinder body has a water mist nozzle 114 embedded at a position corresponding to the water spray pipe, communicating with the interior of the cylinder body. The water spray pipe is connected to the water mist nozzle. A second bypass pipe 115 is provided on the water spray pipe, and a second valve 116 is installed on the second bypass pipe. A water inlet 117 is provided on the cylinder body at a position corresponding to the second bypass pipe, communicating with the interior of the cylinder body. The second bypass pipe is connected to the water inlet. The filter screen is located on the outside of the cylinder body and is detachably connected to the cylinder body. In use, the exhaust port serves as an exhaust port, and can also be used as a feed inlet by removing the filter screen. Water is quickly injected into the cylinder body by opening the second valve, producing gypsum in the existing manner, which is suitable for production needs with lower requirements for gypsum flexural strength, compressive strength, and tensile bond strength. In actual production of plastering gypsum, the second bypass pipe can also be used as a backup water supply pipe.
[0027] As a preferred implementation method, see [link to relevant documentation]. Figure 1 and Figure 3 Multiple stirring rods are arranged circumferentially along the central axis and in rows vertically, typically in three rows. A scraper is fixed to each row of stirring rods. The scraper is at the same height as the central axis. Each row of stirring rods includes a first stirring rod 104-1 and a second stirring rod 104-2. The length of the first stirring rod is greater than the length of the second stirring rod, and the first and second stirring rods are spaced apart. The scraper is connected to the first stirring rod, and an extension 106-1 is provided on the scraper corresponding to the position of the second stirring rod, extending towards the second stirring rod. The width of the extension is greater than the diameter of the second stirring rod, where the width of the extension refers to the distance from the bottom end to the top end of the extension. This structure, by providing an extension to the scraper, increases the turbulence effect of the scraper when the central axis rotates. Furthermore, while pushing the gypsum raw material to rotate during agitation, the second stirring rod and the second stirring rod at different positions create a separating effect, resulting in better agitation.
[0028] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.
[0029] It should be readily understood that “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest manner, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on something” but also “on something” without an intermediate feature or layer therebetween (i.e., directly on something).
[0030] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.
[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A device for preparing a finishing plaster, comprising a barrel (100) and a discharge pipe (101) arranged at the bottom of the barrel, a first valve (102) being arranged on the discharge pipe, a central shaft (103) being arranged in the barrel and capable of rotating relative to the barrel, a plurality of stirring rods (104) being arranged on the central shaft in a circumferential direction, characterized in that: a piston (105) capable of moving up and down along the barrel is arranged in the barrel, a scraper (106) is arranged on one end of the stirring rod close to the barrel, the scraper, the stirring rod and the central shaft form a stirring mechanism; a feed pipe (107) and a water spraying pipe (111) are fixed on the barrel close to the top, a fan (108) is connected to one end of the feed pipe away from the barrel, a first bypass pipe (109) is connected to the top of the feed pipe, a feed tank (110) is fixed on one end of the first bypass pipe not connected to the feed pipe; an air outlet and a filter screen (113) for shielding the air outlet are arranged on the barrel close to the top; when the piston moves to the highest position, there is a gap between the stirring mechanism and the piston, the feed pipe, the water spraying pipe and the air outlet are located between the piston and the stirring mechanism and close to the piston; the filter screen is arranged outside the barrel and detachably connected to the barrel; a water mist nozzle (114) communicating with the inside of the barrel is inlaid on the barrel at a position corresponding to the water spraying pipe, the water spraying pipe communicates with the water mist nozzle; a second bypass pipe (115) is arranged on the water spraying pipe, a second valve (116) is arranged on the second bypass pipe, a water inlet hole (117) communicating with the inside of the barrel is arranged on the barrel at a position corresponding to the second bypass pipe, the second bypass pipe communicates with the water inlet hole; a plurality of stirring rods are arranged on the central shaft in a circumferential direction and in a vertical direction in a row, a scraper is fixed on each row of stirring rods; the scraper and the central shaft have the same height; each row of stirring rods comprises a first stirring rod (104-1) and a second stirring rod (104-2), the length of the first stirring rod is greater than the length of the second stirring rod, the first stirring rod and the second stirring rod are arranged in a spaced manner; the scraper is connected to the first stirring rod, an extension (106-1) extending to the direction of the second stirring rod is arranged on the scraper at a position corresponding to the second stirring rod, the width of the extension is greater than the diameter of the second stirring rod, wherein the width of the extension refers to the distance from the bottom end of the extension to the top end of the extension; a motor (112) for driving the central shaft to rotate is arranged on the barrel; the motor is fixed on the bottom surface of the barrel; a hydraulic cylinder (118) is connected to the top of the piston, the hydraulic cylinder is fixed on a support (119), a support plate (120) for supporting the fan and a support frame (121) for supporting the feed pipe are arranged on the support; the first bypass pipe is inclined, the height of one end close to the fan is greater than the height of the other end. 2. A device for preparing a finishing plaster according to claim 1, characterized in that: 3. A device for preparing a finishing plaster according to claim 1, characterized in that: 4. A device for preparing a finishing plaster according to claim 1, characterized in that: 5. A device for preparing a finishing plaster according to claim 4, characterized in that: 6. A device for preparing a finishing plaster according to claim 1, characterized in that: 7. A device for preparing a finishing plaster according to claim 6, characterized in that: 8. An apparatus for preparing a finishing plaster gypsum according to claim 1, characterized in that: 9. An apparatus for preparing a finishing plaster gypsum according to claim 1, characterized in that:
Citation Information
Patent Citations
Efficient multi-stage stirring equipment for concrete production and preparation
CN118493622A
Anti-caking concrete stirring device
CN212602572U