Adjustable gypsum slurry uniform distribution device
By combining a regulating valve and a horizontal auger conveyor with a tapered discharge nozzle, trapezoidal guide plate, and transverse flow equalization grid, the problems of uneven gypsum slurry distribution and high energy consumption were solved, thus improving the quality of gypsum board.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TAISHAN GYPSUM (CHONGZUO) CO LTD
- Filing Date
- 2025-06-05
- Publication Date
- 2026-06-26
AI Technical Summary
In the current gypsum board production process, the uniform distribution of gypsum slurry presents problems such as high energy consumption, easy clogging, unadjustable flow rate, and uneven distribution, which affect the density and flexural strength of the gypsum board.
The flow rate is controlled by a regulating valve, combined with a horizontal auger conveyor and a tapered discharge nozzle design, and equipped with a trapezoidal guide plate and a transverse flow equalization grid to achieve dynamic adjustment and transverse uniform distribution of flow rate, reduce frictional resistance and eliminate local flow differences.
It achieves uniform distribution of gypsum slurry, reduces energy consumption, minimizes the risk of clogging, and improves the density and flexural strength of gypsum board.
Smart Images
Figure CN224407987U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of gypsum board production equipment, specifically to an adjustable gypsum slurry uniform distribution device. Background Technology
[0002] In the production process of paper-faced gypsum board, the uniform distribution of gypsum slurry and the efficiency of gas discharge directly affect the density of the finished product. Existing technology, such as patent publication number CN220008173U, discloses a paper-faced gypsum board densification processing device. Its slurry distribution mechanism uses a vertical auger shaft combined with a duckbill-shaped discharge nozzle to achieve slurry distribution. However, in practical applications, it has the following significant drawbacks:
[0003] 1. Vertical auger shaft resistance and clogging issues: High-viscosity gypsum slurry needs to overcome gravity and the adhesion force of the cylinder wall under vertical conveying by the vertical auger, resulting in high load on the auger shaft and high energy consumption. In addition, the slurry is prone to solidification and clogging of the blade gap after shutdown, requiring frequent cleaning and maintenance.
[0004] 2. Insufficient uniformity of material distribution: The traditional duckbill-shaped discharge nozzle has a simple internal flow channel design, resulting in uneven distribution of slurry in the transverse direction of the conveyor belt (fast flow rate in the center and slow flow rate on both sides). The transverse thickness deviation is large, and air bubbles and cavities are easily generated due to slurry accumulation during subsequent rolling, which reduces the flexural strength of the gypsum board.
[0005] 3. Unadjustable flow rate: The lack of a flow control module makes it unable to adapt to different viscosity slurries or changes in production rhythm, resulting in flow rate fluctuations, affecting the gas discharge efficiency of the coating process, and exacerbating cavity defects.
[0006] Although some improvements have enhanced density by optimizing the coating mechanism (such as the cutting roller to break bubbles), uneven fabric distribution remains the core bottleneck restricting quality. Therefore, there is an urgent need for an adjustable, low-resistance, uniform fabric distribution device to systematically solve the above problems. Utility Model Content
[0007] In view of this, the purpose of this utility model is to provide an adjustable gypsum slurry uniform distribution device to solve the problems of high energy consumption, easy clogging, insufficient uniformity of distribution, and non-adjustable flow rate of existing distribution mechanisms.
[0008] To achieve the above objectives, this utility model provides the following technical solution:
[0009] An adjustable gypsum slurry uniform distribution device includes a feeding hopper, a regulating valve, a horizontal auger conveyor, and a uniform discharge assembly. The feeding hopper is connected to the input end of the horizontal auger conveyor via the regulating valve. The uniform discharge assembly includes a tapered discharge nozzle, a trapezoidal guide plate, and a transverse flow equalization grid. The inlet end of the tapered discharge nozzle is connected to the output end of the horizontal auger conveyor. The top edge of the trapezoidal guide plate is connected to the outlet end of the tapered discharge nozzle, and the bottom edge of the trapezoidal guide plate is connected to the transverse flow equalization grid, which has multiple uniformly distributed grids. The trapezoidal guide plate has multiple parallel and downwardly diffusing guide channels, which connect the tapered discharge nozzle and the grids.
[0010] As a further improvement of this utility model, the drive motor of the horizontal auger conveyor is a variable frequency drive motor.
[0011] As a further improvement of this utility model, the trapezoidal guide plate and the tapered discharge nozzle are coaxially inclined.
[0012] As a further embodiment of this utility model, the number of the flow guide grooves is three, and the three flow guide grooves are symmetrically distributed.
[0013] As a further embodiment of this utility model: the regulating valve is connected to the horizontal auger conveyor via a pipeline, a flow sensor is installed in the pipeline, and the flow sensor is connected to the regulating valve and the horizontal auger conveyor via a controller.
[0014] As a further improvement of this utility model, the feeding hopper is provided with a piezoelectric ceramic plate.
[0015] By adopting the above technical solution, this utility model will have the following beneficial effects:
[0016] This utility model provides an adjustable gypsum slurry uniform distribution device. It controls the flow rate of gypsum slurry entering a horizontal auger conveyor via a regulating valve, achieving dynamic adjustment of the initial feed amount to adapt to different production rhythms and slurry viscosity requirements, avoiding blockages or material shortages caused by excessive or insufficient supply. The horizontally arranged auger conveyor avoids gravity resistance of the slurry, effectively reducing frictional resistance and energy consumption, while also reducing the risk of slurry solidification and blockage after shutdown. The tapered discharge nozzle's tapered flow channel design utilizes the principle of fluid acceleration to reduce slurry viscous resistance-induced accumulation, ensuring continuous and stable discharge and laying the foundation for subsequent uniform distribution. The trapezoidal guide plate's guide channel disperses the high-speed slurry flow to both sides and the middle of the conveyor belt, initially balancing the lateral thickness of the slurry and solving the problem of uneven distribution ("thick in the middle, thin on both sides") found in traditional discharge nozzles. The transverse uniform flow grid divides the slurry flow and utilizes turbulent mixing effects to eliminate local flow differences, ultimately ensuring uniform spreading of gypsum slurry on the conveyor belt surface, improving the density and flexural strength of the gypsum board. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the adjustable gypsum slurry uniform distribution device described in an embodiment of the present invention;
[0019] Figure 2 for Figure 1 A perspective view of the uniform discharge component described in the embodiment.
[0020] The correspondence between the labels and component names in the attached figures is as follows:
[0021] 1. Feeding hopper; 2. Regulating valve; 3. Horizontal auger conveyor; 4. Uniform discharge assembly; 41. Gradient discharge nozzle; 42. Trapezoidal guide plate; 421. Flow guide groove; 43. Transverse flow equalization grid; 431. Grid; 5. Flow sensor; 6. Piezoelectric ceramic plate; 7. Conveyor belt. Detailed Implementation
[0022] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the following description is to be considered exemplary in nature and not restrictive.
[0023] Please refer to Figure 1 and Figure 2 In one embodiment of the adjustable gypsum slurry uniform distribution device provided by this utility model, the adjustable gypsum slurry uniform distribution device includes a feeding hopper 1, a regulating valve 2, a horizontal auger conveyor 3, and a uniform discharge component 4.
[0024] The feeding hopper 1 is connected to the input end of the horizontal auger conveyor 3 via a regulating valve 2. This allows the regulating valve 2 to control the flow rate of gypsum slurry as it enters the conveyor from the feeding hopper 1, thus adapting to different viscosities and production speeds. The output end of the horizontal auger conveyor 3 is connected to a uniform discharge assembly 4, which horizontally transports the gypsum slurry to the uniform discharge assembly 4. Because high-viscosity gypsum slurry requires overcoming both the adhesion force of the cylinder wall and the gravity of the slurry during vertical transport, the auger shaft experiences high load and energy consumption. Furthermore, the slurry easily solidifies and clogs the blade gaps after shutdown, requiring frequent cleaning and maintenance. Even with gravity-assisted downward transport, the high viscosity slurry's viscous resistance, asymmetrical force, and poor self-cleaning ability still result in high energy consumption and easy clogging. Therefore, horizontal transport is a more efficient and reliable choice. In the horizontal screw conveyor 3 of this embodiment, the axial thrust and the gravity component of the gypsum slurry work together to effectively reduce frictional resistance. Moreover, since it is not necessary to maintain a high filling rate to prevent the slurry from sliding freely, the contact area between the blades and the material is reduced at a lower filling rate. At the same time, stable conveying is maintained by the screw thrust, avoiding local blockage.
[0025] The uniform discharge component 4 includes a tapered discharge nozzle 41, a trapezoidal guide plate 42, and a transverse flow equalization grid 43. The tapered discharge nozzle 41 has a tapered flow channel (wide inlet, narrow outlet). The inlet end of the tapered discharge nozzle 41 is connected to the output end of the horizontal auger conveyor 3. According to Bernoulli's principle, the tapered flow channel design of the tapered discharge nozzle 41 can increase the slurry outlet speed and reduce sludge accumulation caused by viscous resistance. The trapezoidal guide plate 42 is coaxially and inclinedly arranged above the conveyor belt 7 with the tapered discharge nozzle 41, forming an angle of 30°-45° with the gypsum slurry conveying direction. The top edge of the trapezoidal guide plate 42 is connected to the outlet end of the tapered discharge nozzle 41, and the bottom edge of the trapezoidal guide plate 42 is connected to the transverse flow equalization grid 43. The transverse flow equalization grid 43 is composed of multiple metal strips connected in an interlaced manner, which together form multiple uniformly distributed grids 431. The trapezoidal guide plate 42 has three parallel guide channels 421. The two guide channels 421 on both sides of the trapezoidal guide plate 42 correspond to the two sides of the conveyor belt 7, and the middle guide channel 421 corresponds to the middle of the conveyor belt 7. The three guide channels 421 are symmetrically distributed about the axis of the trapezoidal guide plate 42 and diffuse downwards. The upper and lower ends of the three guide channels 421 bisect the top and bottom edges of the guide plate, respectively. Each guide channel 421 is connected to the tapered discharge nozzle 41 and the grid 431. The trapezoidal guide plate 42 can guide 60%-70% of the high-speed slurry flowing out of the outlet end of the tapered discharge nozzle 41 to the guide channels 421 on both sides, and the remaining 40%-30% flows out directly through the middle guide channel 421, initially balancing the lateral distribution of the gypsum slurry. The lateral flow equalization grid 43 divides the slurry flow into multiple fine streams, and through the turbulent mixing effect, the slurry in the middle and on both sides is re-fused, eliminating local flow differences.
[0026] As a preferred embodiment, the drive motor of the horizontal auger conveyor 3 is a variable frequency drive motor. The speed of the blades of the horizontal auger conveyor 3 can be adjusted by the variable frequency drive motor, so as to adapt to the requirements of different viscosity slurries and production rhythm. Moreover, it can reduce the speed when the load is low to reduce energy consumption.
[0027] In a preferred embodiment, the regulating valve 2 is connected to the horizontal auger conveyor 3 via a pipeline. A flow sensor 5 is installed inside the pipeline. The flow sensor 5 can monitor the slurry flow rate in real time and accurately collect instantaneous flow data. The flow sensor 5 is connected to the regulating valve 2 and the horizontal auger conveyor 3 via a PLC controller. Based on the signal fed back by the flow sensor 5, the PLC controller adjusts the rotation speed of the horizontal auger conveyor 3 and the opening degree of the regulating valve 2 in a coordinated manner to maintain the stability of the set gypsum slurry flow rate and reduce flow fluctuations. At the same time, it can support gypsum slurry with different viscosity ranges, thereby improving adaptability.
[0028] As a preferred embodiment, the feeding hopper 1 is provided with a piezoelectric ceramic sheet 6, which is an existing functional ceramic material that utilizes the piezoelectric effect (generating voltage by applying mechanical force, or generating deformation by applying voltage). The piezoelectric ceramic sheet 6 is fixed to the outer wall of the feeding hopper 1 by bolts or adhesives. When an alternating voltage is applied to the piezoelectric ceramic sheet 6, the ceramic sheet will rapidly expand and contract, generating mechanical vibration, and transmitting the high-frequency vibration to the entire feeding hopper 1, forcing the slurry particles to disperse and flow evenly, preventing slurry agglomeration, and achieving uniform dispersion and continuous feeding of the slurry.
[0029] The method of use or working principle of this utility model is as follows:
[0030] The gypsum slurry falls from the feed hopper 1 and enters the horizontal auger conveyor 3 through the regulating valve 2. The flow rate of the gypsum can be controlled by the regulating valve 2 to adapt to slurries of different viscosities or changes in production rhythm. The horizontal auger conveyor 3 horizontally transports the gypsum slurry to the uniform discharge component 4. Since the horizontal auger conveyor 3 does not need to overcome the gravity of the slurry and the horizontal arrangement allows for a lower filling rate, the load is low and it is not easy to clog. After the slurry enters the uniform discharge component 4, it flows out of the outlet of the tapered discharge nozzle 41 at an accelerated speed. Then, it is diverted by the guide groove 421 of the trapezoidal guide plate 42 to the sides and middle of the conveyor belt 7, so that the lateral distribution is initially balanced. Then, the lateral uniform flow grid 43 divides the slurry flow into multiple fine streams. Through the turbulent mixing effect, the slurry in the middle and on both sides is re-fused, eliminating local flow differences and realizing uniform distribution of slurry.
[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. An adjustable gypsum slurry uniform distribution device, characterized in that, The system includes a feeding hopper (1), a regulating valve (2), a horizontal auger conveyor (3), and a uniform discharge assembly (4); the feeding hopper (1) is connected to the input end of the horizontal auger conveyor (3) through the regulating valve (2); the uniform discharge assembly (4) includes a tapered discharge nozzle (41), a trapezoidal guide plate (42), and a transverse flow equalization grid (43); the inlet end of the tapered discharge nozzle (41) is connected to the output end of the horizontal auger conveyor (3); The top edge of the trapezoidal guide plate (42) is connected to the outlet end of the tapered discharge nozzle (41), and the bottom edge of the trapezoidal guide plate (42) is connected to the transverse flow equalization grid (43). The transverse flow equalization grid (43) has a plurality of uniformly distributed grids (431). The trapezoidal guide plate (42) has a plurality of parallel and downwardly diffused guide grooves (421). The guide grooves (421) connect the tapered discharge nozzle (41) and the grids (431).
2. The adjustable gypsum slurry uniform distribution device according to claim 1, characterized in that, The drive motor of the horizontal auger conveyor (3) is a variable frequency drive motor.
3. The adjustable gypsum slurry uniform distribution device according to claim 1, characterized in that, The trapezoidal guide plate (42) and the tapered discharge nozzle (41) are coaxially inclined.
4. The adjustable gypsum slurry uniform distribution device according to claim 1, characterized in that, The number of the flow guide grooves (421) is three, and the three flow guide grooves (421) are symmetrically distributed.
5. The adjustable gypsum slurry uniform distribution device according to claim 1, characterized in that, The regulating valve (2) is connected to the horizontal auger conveyor (3) via a pipeline. A flow sensor (5) is installed in the pipeline. The flow sensor (5) is connected to the regulating valve (2) and the horizontal auger conveyor (3) via a controller.
6. The adjustable gypsum slurry uniform distribution device according to claim 1, characterized in that, The feeding hopper (1) is provided with a piezoelectric ceramic plate (6).