Gypsum powder aging control system and method

Abstract

The invention discloses a gypsum powder aging control system and method.The method comprises the steps that a stirring rod of a stirring mechanism is lifted to the uppermost end, and exercised gypsum powder is poured into an aging cylinder; after the amount of the poured gypsum powder reaches a set value, a stirring rod of the stirring mechanism is driven to move downwards in a rotating mode till the stirring rod rotates into the gypsum powder, and the stirring rod stirs the gypsum powder in a fixed-point rotating mode to accelerate heat dissipation and aging; monitoring the temperature of the gypsum powder in the aging cylinder in real time, and independently regulating and controlling the stirring speed and the stirring time of each stirring mechanism according to the temperature of the gypsum powder until the aging degrees of all the gypsum powder in the aging cylinder are synchronous and uniform; when the temperature of the gypsum powder at each position in the aging cylinder reaches the set temperature, aging is completed; gypsum powder is driven to turn over up and down in a reciprocating manner for heat dissipation and aging until the temperatures of the gypsum powder in the same vertical direction in the aging cylinder are the same up and down, and the temperatures of the gypsum powder at the same horizontal height are balanced.

Description

Technical Field

[0001] The present invention relates to the technical field of gypsum powder aging, and specifically relates to a gypsum powder aging control system and method. Background Art

[0002] For generally freshly calcined plaster of Paris, most of its phases are hemihydrate gypsum, but it contains a small amount of dihydrate gypsum and anhydrous gypsum, and the material temperature is 140 - 180 degrees. If it directly enters the silo, etc., it will cause fluctuations in the phase composition, resulting in phenomena such as a large water demand for standard consistency after modulation, low strength, and unstable setting time. At the same time, the high material temperature also affects the product packaging and the dosage of additives in downstream products. Therefore, the calcined building gypsum powder generally needs to undergo aging and cooling treatment, which can cause the residual dihydrate gypsum in the material to absorb heat and further transform into hemihydrate gypsum. At the same time, the soluble anhydrous gypsum in it can also absorb the moisture in the space and transform into hemihydrate gypsum. This transformation of phase components and certain changes in crystals are the process of aging of plaster of Paris. Since gypsum can continue to dehydrate above 60 degrees, causing a re-change in the phase composition, it is necessary to cool down during the aging process to ensure the quality stability of the product.

[0003] In actual production, the entire process involves manual participation, relying on manual control of the aging time of the hot material. Although an intelligent monitoring system has been added now, by combining a temperature sensor with mechanical heat dissipation aging to determine the aging process, in the existing intelligent monitoring system, the temperature sensor only monitors whether the aging work is completed. Therefore, the entire aging control system cannot finely regulate and accelerate the aging process. Summary of the Invention

[0004] The purpose of the present invention is to provide a gypsum powder aging control system and method to solve the technical problem that in the prior art, the temperature sensor only monitors whether the aging work is completed, so the entire aging control system cannot finely regulate and accelerate the aging process.

[0005] To solve the above technical problems, the present invention specifically provides the following technical solutions:

[0006] A gypsum powder aging control system, comprising:

[0007] A level gauge, arranged at the top of the aging cylinder, for monitoring the powder amount of the gypsum powder in the aging cylinder;

[0008] A temperature sensor, successively installed on the inner wall of the aging cylinder, for monitoring the temperature of the gypsum powder, and the temperature sensor and the level gauge are connected to a processing system and are connected to the input end of the processing system;

[0009] The stirring mechanism is evenly installed inside the aging cylinder, and the driving component of the stirring mechanism is arranged above the aging cylinder. The stirring rod of the stirring mechanism is arranged inside the aging cylinder. The driving component drives the stirring rod to rotate and move up and down along the direction parallel to the central axis of the aging cylinder, so as to disperse the gypsum powder inside the aging cylinder for heat dissipation;

[0010] The output end of the processing system is connected to the stirring mechanism. The processing system controls the start-up of the stirring mechanism based on the amount of gypsum powder monitored by the level gauge, and the processing system controls the rotation speed of the stirring mechanism based on the temperature of the gypsum powder monitored by the temperature sensor, so as to manage the aging efficiency of the gypsum powder inside the aging cylinder.

[0011] As a preferred solution of the present invention, the number of the stirring mechanisms is at least two. The cover of the aging cylinder is provided with corresponding threaded through holes. The upper end of the stirring rod of the stirring mechanism is provided with an external thread section. The driving component of the stirring mechanism is used to drive the stirring rod to rotate forward and backward, and drives the stirring rod to rotate and move up and down through a threaded engagement method. When the stirring rod of the stirring mechanism rotates and moves down to the lowest position, the stirring rod can realize a fixed-point rotation motion;

[0012] On the upper end surface of the cover of the aging cylinder, a vertical clamping plate is provided on the outside of each driving component. A sleeve sleeving on the vertical clamping plate is provided on the shell of the driving component. When the driving component rotates forward and backward, it moves up and down along the vertical clamping plate through the sleeve.

[0013] As a preferred solution of the present invention, the lower end of the stirring rod is provided with a spiral plate, and the diameter of the spiral plate increases sequentially from bottom to top. When the stirring rod rotates and moves downward driven by the driving component, the spiral plate can disperse the gypsum powder at the bottom of the aging cylinder;

[0014] The diameter of the circle where the outer edge of the maximum diameter of the spiral plates on all the stirring rods is located is smaller than the diameter of the aging cylinder.

[0015] As a preferred solution of the present invention, the diameter of the circle where the inner edge of the maximum diameter of the spiral plates on all the stirring rods is located is larger than the diameter of the feeding port of the aging cylinder;

[0016] The default state of the stirring mechanism is that the stirring rod moves close to the feeding port of the aging cylinder. When the stirring rod rotates and moves down to the lowest end, the stirring rod can realize a fixed-point rotation motion.

[0017] As a preferred solution of the present invention, the level gauge is installed at the lower end position of the feeding port of the aging cylinder and at the edge position of the cover of the aging cylinder;

[0018] The processing system calculates the accumulated volume of gypsum powder in the aging cylinder based on the monitoring results of all level gauges to determine the amount of gypsum powder.

[0019] When the amount of gypsum powder is at the set value, the processing system controls the stirring rod to rotate and move downward to stir and dissipate heat from the gypsum powder.

[0020] As a preferred solution of the present invention, the temperature sensors are sequentially installed on the inner wall of the aging cylinder in the order from top to bottom. The temperature sensors at the same height are annularly distributed on the inner wall of the aging cylinder, and the temperature sensors are installed on the side of the stirring mechanism. The temperature sensors at different heights are vertically coaxially distributed on the inner wall of the aging cylinder.

[0021] As a preferred solution of the present invention, the processing system is provided with an aging temperature change calculation module. The aging temperature change calculation module constructs a vertical gypsum powder temperature distribution curve based on the monitoring signals of multiple temperature sensors in the same vertical coaxial direction. The processing system controls the working duration of the stirring mechanism based on the vertical gypsum powder temperature distribution curve until the upper and lower temperatures of the gypsum powder in the same vertical direction in the aging cylinder are the same.

[0022] The aging temperature change calculation module constructs a horizontal annular gypsum powder temperature distribution curve based on the monitoring signals of multiple temperature sensors in the same annular curve direction. And the processing system controls the rotation speed of the stirring mechanism based on the horizontal annular gypsum powder temperature distribution curve until the temperature of the gypsum powder at the same horizontal height in the aging cylinder is balanced.

[0023] The aging temperature change calculation module constructs a monitoring temperature change curve based on the monitoring signal of a single independent temperature sensor. And the processing system determines the curve slope at each moment based on the monitoring temperature change curve. The processing system controls the rotation speed of the stirring mechanism based on the curve slope.

[0024] In addition, the present invention provides a control method for a gypsum powder aging control system, including the following steps:

[0025] Step 100: Lift the stirring rod of the stirring mechanism to the uppermost end and pour the calcined gypsum powder into the aging cylinder.

[0026] Step 200: After the amount of poured gypsum powder reaches the set value, drive the stirring rod of the stirring mechanism to rotate and move downward until the stirring rod rotates into the gypsum powder. The stirring rod stirs the gypsum powder by fixed-point rotation to accelerate heat dissipation and aging.

[0027] Step 300: Monitor the temperature of the gypsum powder in the aging cylinder in real time, and independently adjust the stirring rate and stirring time of each stirring mechanism according to the temperature of the gypsum powder until the aging degree of all the gypsum powder in the aging cylinder is synchronized and uniform;

[0028] Step 400: When the temperatures of the gypsum powder at various positions in the aging cylinder reach the set temperature, the aging is completed, and the gypsum powder in the aging cylinder is transferred.

[0029] As a preferred solution of the present invention, in step 100, a gypsum powder thickness curve graph is formed based on the monitoring data of all the level gauges installed on the cover of the aging cylinder, and by performing calculus on the gypsum powder thickness curve graph, the powder amount of the gypsum powder at the bottom of the aging cylinder is obtained in real time;

[0030] In step 200, the stirring rod moves in a rotary downward movement manner, and the stirring rod rotates into the gypsum powder at the bottom of the aging cylinder through the spiral plate at its lower end to drive the gypsum powder to flip up and down reciprocally for uniform heat dissipation and aging of the gypsum powder.

[0031] As a preferred solution of the present invention, in step 300, a vertical gypsum powder temperature distribution curve is constructed based on the monitoring signals of multiple temperature sensors in the same vertical coaxial direction, and the processing system adjusts the working duration of the stirring mechanism based on the vertical gypsum powder temperature distribution curve until the upper and lower temperatures of the gypsum powder in the same vertical direction in the aging cylinder are the same;

[0032] The aging temperature change calculation module constructs a horizontal annular gypsum powder temperature distribution curve based on the monitoring signals of multiple temperature sensors in the same annular curve direction, and the processing system adjusts the rotation rate of the corresponding stirring mechanism based on the high-temperature regions of all the horizontal annular gypsum powder temperature distribution curves until the temperatures of the gypsum powder at the same horizontal height in the aging cylinder are balanced;

[0033] The aging temperature change calculation module constructs a monitoring temperature change curve based on the monitoring signal of a single independent temperature sensor, and the processing system determines the curve slope at each moment based on the monitoring temperature change curve, and the processing system adjusts the rotation rate of the stirring mechanism based on the curve slope.

[0034] The present invention has the following beneficial effects compared with the prior art:

[0035] The present invention monitors the total amount of gypsum material in the aging cylinder in real time. When the total amount of gypsum material in the aging cylinder reaches the gypsum powder capacity corresponding to the optimal aging effect, the feeding is paused, and the stirring rod of the stirring mechanism is rotated and lowered to drive the gypsum powder to be turned over up and down reciprocally, so as to uniformly dissipate heat and age the gypsum powder. Moreover, by managing the aging situation of the gypsum material in zones and setting multiple stirring mechanisms, until the upper and lower temperatures of the gypsum powder in the same vertical direction in the aging cylinder are the same, and the temperatures of the gypsum powder at the same horizontal height are balanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can also be obtained according to the provided drawings.

[0037] Figure 1 It is a structural block diagram of the gypsum powder aging control system according to an embodiment of the present invention;

[0038] Figure 2 It is a schematic side-sectional structure diagram of the aging cylinder according to an embodiment of the present invention;

[0039] Figure 3 It is a schematic structural diagram of the stirring mechanism according to an embodiment of the present invention;

[0040] Figure 4 It is a schematic flow diagram of the gypsum powder aging control method according to an embodiment of the present invention;

[0041] The reference numerals in the drawings are respectively represented as follows:

[0042] 1 - level gauge; 2 - temperature sensor; 3 - processing system; 4 - stirring mechanism; 5 - threaded perforation;

[0043] 31 - aging temperature change calculation module;

[0044] 41 - driving component; 42 - stirring rod; 43 - external thread section; 44 - vertical clamping plate; 45 - sleeve; 46 - spiral plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0046] As Figures 1 to 3As shown in the figure, the present invention provides a gypsum powder aging control system, including a level gauge 1, a temperature sensor 2, at least two stirring mechanisms 4 and a processing system 3.

[0047] The level gauge 1 is arranged at the top of the aging cylinder for monitoring the powder amount of the gypsum powder in the aging cylinder.

[0048] The temperature sensor 2 is successively installed on the inner wall of the aging cylinder for monitoring the temperature of the gypsum powder. Moreover, the temperature sensor 2 and the level gauge 1 are connected to the processing system 3 and are connected to the input end of the processing system 3.

[0049] The stirring mechanisms 4 are evenly installed in the aging cylinder. The driving assembly 41 of the stirring mechanism 4 is arranged above the aging cylinder, and the stirring rod 42 of the stirring mechanism 4 is arranged in the aging cylinder. The driving assembly 41 drives the stirring rod 42 to rotate and move up and down along the central axis direction of the aging cylinder to disperse the gypsum powder in the aging cylinder for heat dissipation.

[0050] The output end of the processing system 3 is connected to the stirring mechanism 4. The processing system 3 controls the start of the stirring mechanism 4 based on the amount of gypsum powder monitored by the level gauge 1, and the processing system 3 controls the rotation speed of the stirring mechanism 4 based on the temperature of the gypsum powder monitored by the temperature sensor 2 to manage the aging efficiency of the gypsum powder in the aging cylinder.

[0051] The calcined gypsum powder clinker is fed into the aging cylinder from the upper end. In order to achieve the best aging efficiency and aging uniformity, each volume of the aging cylinder has the corresponding gypsum powder capacity for the best aging effect. Therefore, in this embodiment, the total amount of gypsum powder poured into the aging cylinder is monitored in real time by the level gauge 1.

[0052] When the total amount of gypsum powder reaches the corresponding gypsum powder capacity for the set best aging effect, the stirring mechanism 4 is controlled to work. The stirring mechanism 4 is used to accelerate the heat dissipation efficiency of the calcined gypsum powder clinker, and with the Roots blower in the aging cylinder, it can reduce the material temperature and accelerate the aging of the clinker.

[0053] Among them, in order to combine the two purposes of improving the aging efficiency and the monitoring accuracy of the gypsum powder capacity, the stirring mechanism 4 in this embodiment is designed in a rotary up-and-down movement mode. Before pouring the gypsum clinker, the stirring mechanism 4 is driven to move up to the uppermost end. At this time, the stirring rod 42 of the stirring mechanism 4 will not affect the calculation of the gypsum powder capacity in the aging cylinder.

[0054] At this time, the powder amount of the gypsum powder in the aging cylinder is monitored in real time by the level gauge 1. Among them, the level gauge 1 can use a radar level gauge. The radar level gauge has a wide monitoring area. Combining the height of the radar level gauge, the total amount of gypsum material poured into the aging cylinder is determined.

[0055] When the total amount of gypsum material in the aging cylinder reaches the gypsum powder capacity corresponding to the optimal aging effect, the feeding is paused, and the stirring rod 42 of the stirring mechanism 4 is rotated and lowered to stir and dissipate heat from the gypsum powder. It should be particularly noted that, in order to reduce the bearing capacity of the driving component of the stirring mechanism 4 when stirring the gypsum powder, in this embodiment, the movement stroke of the stirring mechanism 4 is designed to be a rotary up and down movement. Thus, when the stirring mechanism 4 rotates and moves downward, it can accelerate the insertion of the stirring rod 42 into the gypsum powder in the aging cylinder and stir the gypsum powder. After stirring for a period of time, when the driving mechanism 4 is driven to rotate upward, the bearing capacity of the stirring rod 42 can be reduced, and the driving pressure of the driving component 41 of the stirring mechanism 4 can be reduced.

[0056] Therefore, in this embodiment, by designing the rotary up and down movement mode of the stirring rod 42 of the stirring mechanism 4, on the one hand, the driving load of the driving component 41 of the stirring mechanism 4 can be reduced, and on the other hand, the heat dissipation and aging efficiency of the gypsum material can be maintained.

[0057] During the aging process, the temperature sensor 2 is used to monitor the temperature of the gypsum powder in real time, and the aging degree of the gypsum is determined based on the temperature of the gypsum powder. Among them, since the number of the stirring mechanisms 4 is multiple and they are evenly distributed in the aging cylinder, therefore, the stirring mechanisms 4 can uniformly dissipate heat from all the gypsum powder. Thus, the processing system 3 adjusts the rotation speed of the stirring mechanism 4 based on the temperature of the gypsum powder monitored by the temperature sensor 2. That is to say, in this embodiment, the rotation speed of the stirring mechanism 4 is not constant. Since heat is generated by friction when the stirring rod 42 of the stirring mechanism 4 rotates, when the stirring mechanism 4 always rotates at a high speed, the cooling rate of the gypsum material will be reduced, and when the stirring mechanism 4 rotates at a low speed, the turnover period of the gypsum material will also increase, and the cooling rate of the gypsum material will also be reduced.

[0058] Therefore, in this embodiment, based on the monitoring temperature change curve of each individual temperature sensor 2 and the change in the slope of the monitoring temperature change curve, the cooling rate of the gypsum material is determined in real time. The processing system 3 adjusts the rotation speed of the stirring rod 42 of the stirring mechanism 4 based on the cooling rate until the slope of the monitoring temperature change curve always remains the largest, so as to accelerate the cooling rate of the gypsum material.

[0059] The level gauge 1 is installed at the lower end of the feeding port of the aging cylinder and at the edge of the cylinder cover of the aging cylinder.

[0060] The processing system 3 calculates the accumulated volume of the gypsum powder in the aging cylinder based on the monitoring results of all the level gauges 1 to determine the amount of the gypsum powder.

[0061] When the amount of the gypsum powder is the set value, the processing system 3 adjusts the stirring rod 42 to rotate and move downward to stir and dissipate heat from the gypsum powder.

[0062] Construct a two-dimensional coordinate system in the vertical direction of the side curved surface and the bottom diameter direction of the aging cylinder. All the level gauges 1 are distributed in the first quadrant of the two-dimensional coordinate system. Determine the two-dimensional coordinate values corresponding to each level gauge 1. Through the monitoring results of all the level gauges 1, a height curve graph of the gypsum material distribution in the aging cylinder is fitted.

[0063] In practical applications, it is found that the height of the gypsum material distribution in the height curve graph of the gypsum material distribution is normally distributed, and then the total amount of gypsum material in the aging cylinder is calculated by calculus.

[0064] Among them, as Figure 2 and Figure 3 shown, the number of the stirring mechanisms 4 is at least two. The cover of the aging cylinder is provided with corresponding threaded perforations 5 in number. The upper end of the stirring rod 42 of the stirring mechanism 4 is provided with an external thread section 43. The driving component 41 of the stirring mechanism 4 is used to drive the stirring rod 42 to rotate forward and backward, and drives the stirring rod 42 to rotate and move up and down in a threaded engagement manner. When the stirring rod 42 of the stirring mechanism 4 rotates and moves down to the lowest position, the stirring rod 42 can realize a fixed-point rotational motion.

[0065] On the upper end surface of the cover of the aging cylinder, a vertical clamping plate 44 is provided on the outside of each driving component 41. A sleeve 45 sleeving on the vertical clamping plate 44 is provided on the shell of the driving component 41. When the driving component 41 rotates forward and backward, it moves up and down along the vertical clamping plate 44 through the sleeve 45.

[0066] When the driving component 41 rotates forward, the stirring rod 42 of the stirring mechanism 4 drives the stirring rod 42 to rotate and move downward through the threaded engagement of the external thread section 43 and the threaded perforation 5 until the stirring rod 42 rotates and moves down to the lowest position and approaches the bottom of the aging cylinder. At this time, the uppermost end of the external thread section 43 of the stirring rod 42 moves to the bottom of the threaded perforation 5, and the stirring rod 42 can only perform a rotational motion and no longer moves up and down, realizing the heat dissipation and aging of the gypsum powder in the aging cylinder.

[0067] When the driving component 41 rotates backward, it drives the stirring rod 42 to rotate and move upward. The stirring rod 42 of the stirring mechanism 4 drives the stirring rod 42 to rotate and move upward through the threaded engagement of the external thread section 43 and the threaded perforation 5 until the stirring rod 42 rotates and moves up to the uppermost position. At this time, the lowermost end of the external thread section 43 of the stirring rod 42 moves to the upper part of the threaded perforation 5, and the stirring rod 42 can only perform a rotational motion and no longer moves up and down.

[0068] The driving component 41 can drive the stirring rod 42 to rotate up and down in the gypsum powder through forward and backward rotation, so as to realize the uniform heat dissipation and aging of the gypsum powder.

[0069] Further, a spiral plate 46 is provided at the lower end of the stirring rod 42, and the diameter of the spiral plate 46 increases successively from bottom to top. When the stirring rod 42 rotates and moves downward driven by the driving assembly 41, the spiral plate 46 can disperse the gypsum powder at the bottom of the aging cylinder.

[0070] The default state of the material stirring mechanism 4 is that the stirring rod 42 moves to be close to the feeding port of the aging cylinder. When the stirring rod 42 rotates and moves downward to the lowest end, the stirring rod 42 can achieve a fixed-point rotational motion.

[0071] When the spiral plate 46 is driven by the driving assembly 1 to rotate, the spiral plate 46 continuously drives the gypsum material to flip, repeatedly turning the gypsum material at the bottom of the aging cylinder upward, thereby realizing reciprocating flipping and heat dissipation, ensuring uniform heat dissipation of all the gypsum materials in the aging cylinder, and avoiding the problem that the temperature at the bottom of the conventional aging cylinder is high while the temperature at the upper part is low.

[0072] To prevent the rotating spiral plate 46 from affecting the feeding and the inner wall of the aging cylinder, the diameter of the circle where the outer edge of the maximum diameter of the spiral plate 46 on all the stirring rods 42 is located is smaller than the diameter of the aging cylinder. The diameter of the circle where the inner edge of the maximum diameter of the spiral plate 46 on all the stirring rods 42 is located is larger than the diameter of the feeding port of the aging cylinder.

[0073] The temperature sensors 2 are sequentially installed on the inner wall of the aging cylinder from top to bottom. The temperature sensors 2 at the same height are annularly distributed on the inner wall of the aging cylinder, and the temperature sensors 2 are installed on the side of the material stirring mechanism 4. The temperature sensors 2 at different heights are vertically coaxially distributed on the inner wall of the aging cylinder.

[0074] The processing system 3 is provided with an aging temperature change calculation module 31. The aging temperature change calculation module 31 constructs a vertical gypsum powder temperature distribution curve based on the monitoring signals of multiple temperature sensors 2 in the same vertical coaxial direction. The processing system 3 adjusts the working duration of the material stirring mechanism 4 based on the vertical gypsum powder temperature distribution curve until the upper and lower temperatures of the gypsum powder in the same vertical direction in the aging cylinder are the same.

[0075] The aging temperature change calculation module 31 constructs a horizontal annular gypsum powder temperature distribution curve based on the monitoring signals of multiple temperature sensors 2 in the same annular curve direction, and the processing system 3 adjusts the rotation speed of the material stirring mechanism 4 based on the horizontal annular gypsum powder temperature distribution curve until the temperatures of the gypsum powder at the same horizontal height in the aging cylinder are balanced.

[0076] The aging temperature change calculation module 31 constructs a monitoring temperature change curve based on the monitoring signal of a single independent temperature sensor 2, and the processing system 3 determines the curve slope at each moment based on the monitoring temperature change curve. The processing system 3 adjusts the rotation speed of the material stirring mechanism 4 based on the curve slope.

[0077] In this embodiment, the horizontal annular gypsum powder temperature distribution curve is used to reflect the temperature of the gypsum material in multiple regions at the same position height. When the average temperature monitored by multiple temperature sensors 2 in the same vertical coaxial direction in a certain region is greater than the average temperature monitored by multiple temperature sensors 2 in the same vertical coaxial direction in another region, it means that the heat dissipation efficiency of this region is low, and it is necessary to increase the rotation speed of the stirring mechanism 4 to improve the heat dissipation efficiency.

[0078] The vertical gypsum powder temperature distribution curve is used to reflect the temperature distribution of the gypsum material in the vertical direction within the same region. When the temperature is uneven, the working duration of the stirring mechanism 4 is adjusted until the upper and lower temperatures of the gypsum powder in the same vertical direction in the aging cylinder are the same.

[0079] The monitored temperature change curve is used to reflect the temperature of the gypsum material at a single temperature monitoring point. The slope change of each monitored temperature change curve is obtained in real time, and the cooling rate of the gypsum material is determined in real time. The processing system 3 adjusts the rotation speed of the stirring rod 42 of the stirring mechanism 4 based on the cooling rate until the slope of the monitored temperature change curve always remains the largest, achieving an accelerated cooling rate of the gypsum material.

[0080] In addition, the present invention also provides a control method for the above-mentioned gypsum powder aging control system, as Figure 4 shown, including the following steps:

[0081] Step 100: Lift the stirring rod of the stirring mechanism to the uppermost end and pour the calcined gypsum powder into the aging cylinder.

[0082] In step 100, based on the monitoring data of all level gauges installed on the cylinder cover of the aging cylinder, a gypsum powder thickness curve graph is formed. By performing calculus on the gypsum powder thickness curve graph, the powder amount of the gypsum powder at the bottom of the aging cylinder is obtained in real time.

[0083] Step 200: After the poured powder amount of the gypsum powder reaches the set value, drive the stirring rod of the stirring mechanism to rotate and move downward until the stirring rod rotates into the gypsum powder. The stirring rod accelerates heat dissipation and aging by rotating the gypsum powder at fixed points.

[0084] In step 200, the stirring rod moves in a rotary downward movement manner, and the stirring rod rotates into the gypsum powder at the bottom of the aging cylinder through the spiral plate at its lower end to drive the gypsum powder to flip up and down reciprocally for uniform heat dissipation and aging of the gypsum powder.

[0085] Step 300: Monitor the temperature of the gypsum powder in the aging cylinder in real time, and independently control the stirring rate and stirring time of each stirring mechanism according to the gypsum powder temperature until the aging degree of all the gypsum powder in the aging cylinder is synchronously uniform.

[0086] Step 400: When the temperatures of the gypsum powder at all positions in the aging cylinder reach the set temperature, the aging is completed, and the gypsum powder in the aging cylinder is transferred.

[0087] In the step 300, a vertical gypsum powder temperature distribution curve is constructed based on the monitoring signals of multiple temperature sensors in the same vertical coaxial direction, and the processing system adjusts the working duration of the stirring mechanism based on the vertical gypsum powder temperature distribution curve until the upper and lower temperatures of the gypsum powder in the same vertical direction in the aging cylinder are the same;

[0088] The aging temperature change calculation module constructs a horizontal annular gypsum powder temperature distribution curve based on the monitoring signals of multiple temperature sensors in the same annular curve direction, and the processing system adjusts the rotation speed of the corresponding stirring mechanism based on the high-temperature regions of all the horizontal annular gypsum powder temperature distribution curves until the temperatures of the gypsum powder at the same horizontal height in the aging cylinder are balanced;

[0089] The aging temperature change calculation module constructs a monitored temperature change curve based on the monitoring signal of a single independent temperature sensor, and the processing system determines the curve slope at each moment based on the monitored temperature change curve, and the processing system adjusts the rotation speed of the stirring mechanism based on the curve slope.

[0090] This embodiment is used to monitor the total amount of gypsum material in the aging cylinder in real time. When the total amount of gypsum material in the aging cylinder reaches the gypsum powder capacity corresponding to the best aging effect, the feeding is paused, and the stirring rod of the stirring mechanism is rotated and lowered to drive the gypsum powder to be turned up and down reciprocally for uniform heat dissipation and aging of the gypsum powder. And by managing the aging situation of the gypsum material in zones and setting multiple stirring mechanisms until the upper and lower temperatures of the gypsum powder in the same vertical direction in the aging cylinder are the same and the temperatures of the gypsum powder at the same horizontal height are balanced.

[0091] The above embodiments are only exemplary embodiments of the present application and are not used to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements within the essence and protection scope of the present application, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present application.

Claims

1. A gypsum powder aging control system, characterized in that: include: A material level meter (1) is arranged on the top of the aging cylinder and is used to monitor the amount of gypsum powder in the aging cylinder; The temperature sensor (2) is sequentially mounted on the inner wall of the aging cylinder and is used to monitor the temperature of the gypsum powder. The temperature sensor (2) and the material level meter (1) are connected to a processing system (3) and are connected to an input end of the processing system (3); A stirring mechanism (4) is evenly installed in the aging cylinder, and a driving component (41) of the stirring mechanism (4) is arranged above the aging cylinder, and a stirring rod (42) of the stirring mechanism (4) is arranged in the aging cylinder, and the driving component (41) drives the stirring rod (42) to rotate up and down along a direction parallel to the central axis of the aging cylinder, so as to stir the gypsum powder in the aging cylinder to dissipate heat; The output end of the processing system (3) is connected to the stirring mechanism (4), and the processing system (3) controls the start-up of the stirring mechanism (4) based on the amount of gypsum powder monitored by the material level meter (1), and the processing system (3) controls the rotation rate of the stirring mechanism (4) based on the temperature of the gypsum powder monitored by the temperature sensor (2) to manage the aging efficiency of the gypsum powder in the aging cylinder.

2. A gypsum powder aging control system according to claim 1, characterized in that: The number of the stirring mechanisms (4) is at least two, the barrel cover of the aging barrel is provided with a corresponding number of threaded through holes (5), the upper end of the stirring rod (42) of the stirring mechanism (4) is provided with an external thread section (43), the driving assembly (41) of the stirring mechanism (4) is used to drive the stirring rod (42) to rotate forward and reverse, and drive the stirring rod (42) to rotate up and down through the thread engagement mode, and when the stirring rod (42) of the stirring mechanism (4) rotates and moves down to the lowest end position, the stirring rod (42) can realize fixed-point rotation movement; The upper end surface of the cylinder cover of the aging cylinder is provided with a vertical clamping plate (44) on the outer side of each of the driving components (41), and the shell of the driving component (41) is provided with a sleeve (45) sleeved on the vertical clamping plate (44). When the driving component (41) is rotated forward or reversely, it moves up and down along the vertical clamping plate (44) through the sleeve (45).

3. A gypsum powder aging control system according to claim 1, characterized in that: A spiral plate (46) is provided at the lower end of the stirring rod (42), and the diameter of the spiral plate (46) increases from bottom to top. When the stirring rod (42) rotates downward under the drive of the driving assembly (41), the spiral plate (46) can stir up the gypsum powder at the bottom of the aging cylinder; The diameter of the circle where the outer edge of the maximum diameter of the spiral plate (46) on all stirring rods (42) lies is smaller than the diameter of the aging cylinder.

4. A gypsum powder aging control system according to claim 3, characterized in that: The diameter of the circle where the inner edge of the maximum diameter of the spiral plate (46) on all stirring rods (42) is located is larger than the diameter of the inlet of the aging cylinder; The default state of the stirring mechanism (4) is that the stirring rod (42) moves to a position close to the inlet of the aging cylinder. When the stirring rod (42) rotates and moves downward to the lowest end, the stirring rod (42) can realize a fixed-point rotation movement.

5. A gypsum powder aging control system according to claim 1, characterized in that: The material level meter (1) is installed at the lower end of the material inlet of the aging cylinder and at the edge of the cylinder cover of the aging cylinder; The processing system (3) calculates the accumulated volume of the gypsum powder in the aging cylinder based on the monitoring results of all the material level meters (1) to determine the amount of gypsum powder; When the amount of gypsum powder reaches a set value, the processing system (3) controls the stirring rod (42) to rotate downward to stir and dissipate the heat of the gypsum powder.

6. A gypsum powder aging control system according to claim 1, characterized in that: The temperature sensors (2) are installed on the inner wall of the aging cylinder in order from top to bottom. The temperature sensors (2) at the same height are distributed in a ring shape on the inner wall of the aging cylinder. The temperature sensors (2) are installed on the side of the stirring mechanism (4). The temperature sensors (2) at different heights are distributed in a vertical coaxial direction on the inner wall of the aging cylinder.

7. A gypsum powder aging control system according to claim 6, characterized in that: The processing system (3) is provided with an aging temperature change calculation module (31), and the aging temperature change calculation module (31) constructs a vertical gypsum powder temperature distribution curve based on monitoring signals of a plurality of temperature sensors (2) in the same vertical coaxial direction. The processing system (3) controls the working time of the stirring mechanism (4) based on the vertical gypsum powder temperature distribution curve until the upper and lower temperatures of the gypsum powder in the same vertical direction in the aging cylinder are the same; The aging temperature change calculation module (31) constructs a horizontal annular gypsum powder temperature distribution curve based on monitoring signals of a plurality of the temperature sensors (2) in the same annular curve direction, and the processing system (3) regulates the corresponding rotation rate of the stirring mechanism (4) based on the high temperature area of ​​the horizontal annular gypsum powder temperature distribution curve until the temperature of the gypsum powder at the same horizontal height in the aging cylinder is balanced; The aging temperature change calculation module (31) constructs a monitoring temperature change curve based on the monitoring signal of the single independent temperature sensor (2), and the processing system (3) determines the slope of the curve at each moment based on the monitoring temperature change curve, and the processing system (3) regulates the rotation rate of the stirring mechanism (4) based on the slope of the curve.

8. A control method based on the gypsum powder aging control system according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 100: lift the stirring rod of the stirring mechanism to the uppermost end, and pour the tempered gypsum powder into the aging cylinder; Step 200: After the amount of poured gypsum powder reaches a set value, the stirring rod of the stirring mechanism is driven to rotate downward until the stirring rod rotates into the gypsum powder, and the stirring rod stirs the gypsum powder by fixed-point rotation to accelerate heat dissipation and aging; Step 300: monitor the temperature of the gypsum powder in the aging cylinder in real time, and independently adjust the stirring rate and stirring time of each stirring mechanism according to the temperature of the gypsum powder until the aging degree of all the gypsum powder in the aging cylinder is synchronized and uniform; Step 400: When the temperature of the gypsum powder at each position in the aging cylinder reaches the set temperature, the aging is completed, and the gypsum powder in the aging cylinder is transferred.

9. The control method of a gypsum powder aging control system according to claim 8, characterized in that: In step 100, a gypsum powder thickness curve is formed by monitoring data of all level meters installed on the cylinder cover of the aging cylinder, and the amount of gypsum powder at the bottom of the aging cylinder is obtained in real time by performing calculus on the gypsum powder thickness curve; In step 200, the stirring rod is moved in a rotational downward manner, and the stirring rod is rotated into the gypsum powder at the bottom of the aging cylinder through the spiral plate at its lower end to drive the gypsum powder to flip up and down reciprocatingly, so as to uniformly dissipate heat and age the gypsum powder.

10. A gypsum powder aging control system according to claim 8, characterized in that: In step 300, a vertical gypsum powder temperature distribution curve is constructed based on monitoring signals of a plurality of temperature sensors in the same vertical coaxial direction, and the processing system regulates the working time of the stirring mechanism based on the vertical gypsum powder temperature distribution curve until the upper and lower temperatures of the gypsum powder in the same vertical direction in the aging cylinder are the same; The aging temperature change calculation module constructs a horizontal annular gypsum powder temperature distribution curve based on the monitoring signals of the multiple temperature sensors in the same annular curve direction, and the processing system adjusts the rotation rate of the corresponding stirring mechanism based on the high temperature area of ​​all horizontal annular gypsum powder temperature distribution curves until the temperature of the gypsum powder at the same horizontal height in the aging cylinder is balanced; The aging temperature change calculation module constructs a monitoring temperature change curve based on the monitoring signal of a single independent temperature sensor, and the processing system determines the slope of the curve at each moment based on the monitoring temperature change curve, and the processing system regulates the rotation rate of the stirring mechanism based on the slope of the curve.

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