Paris gypsum powder storage device and production line and gypsum board production line

Abstract

The invention provides a calcined gypsum powder storage device, a production line and a gypsum board production line. The calcined gypsum powder storage device comprises a storage bin, a first conveying assembly and a second conveying assembly. The storage bin is provided with a first discharge port, a second discharge port and a discharge valve assembly; the discharging valve assembly is arranged to be capable of communicating the inner cavity of the bin body with at least one of the first discharging opening and the second discharging opening; the first conveying assembly is arranged corresponding to the first discharging opening and is arranged to convey materials output from the first discharging opening to a gypsum board production device; the second conveying assembly is arranged corresponding to the second discharging port and is arranged to convey the materials output from the second discharging port to the material returning port. The calcined gypsum powder storage device can ensure that the phase composition consistency of calcined gypsum powder used for gypsum board production is good.

Description

Technical Field

[0001] The present application relates to the technical field of gypsum production equipment, and in particular to a plaster of Paris powder storage device and production line and a gypsum board production line. Background Art

[0002] The gypsum board production line needs gypsum powder as raw material. After being fried and ground, the gypsum powder is transported to the storage bin for storage and ready for use. The gypsum powder is placed in the storage bin for mixing and aging. During this process, the undehydrated dihydrate gypsum in the gypsum powder is dehydrated into hemihydrate gypsum by the residual heat of calcination, and the anhydrous gypsum formed by uneven calcination can absorb water and become hemihydrate gypsum, making the phase composition of the gypsum powder tend to be consistent. Therefore, placing the gypsum powder in the storage bin for aging is conducive to improving the quality and grade of the gypsum board produced later.

[0003] However, the aging time of the gypsum powder in the storage bin is different, and the powder properties and particle size distribution characteristics are uneven, resulting in inconsistent aging effects of the gypsum powder. The properties of the gypsum powder that has been aged for a long time are quite different from those of the newly produced gypsum powder. With the current storage device for gypsum powder, some external factors cause different batches of gypsum powder to be placed in the storage bin for different aging times, resulting in inconsistent phase compositions of different batches of gypsum powder. Subsequent gypsum board production lines need to adjust other ingredients accordingly based on the material properties of a certain batch of gypsum powder, making the gypsum board production process unstable and the quality of gypsum board molding fluctuating greatly. In addition, gypsum powder that has been aged for more than a certain time will also affect the strength and bonding properties of the gypsum board, making it difficult to guarantee the quality of the gypsum board. Summary of the invention

[0004] In order to solve the above problems, the embodiments of the present application provide a plaster of Paris powder storage device and production line and a gypsum board production line. The discharge valve assembly of the plaster of Paris powder storage device can selectively connect the bin body with the first discharge port and convey the material to the gypsum board production device through the first conveying assembly. The discharge valve assembly can also selectively connect the bin body with the second discharge port and convey the material back into the bin body through the second conveying assembly. In this way, the plaster of Paris powder in the storage bin whose mixing and aging time meets the production requirements can be preferentially conveyed to the gypsum board production device, and the plaster of Paris powder with a longer mixing and aging time can be returned to the bin body and mixed with the newly produced material entering the bin body, thereby ensuring the good phase composition consistency of the plaster of Paris powder used in subsequent production.

[0005] The specific technical solutions of the embodiments of this application are as follows: A plaster of Paris powder storage device, comprising: A storage bin, comprising a bin body with an inner cavity, a return port, a first discharge port and a second discharge port, wherein the inner cavity of the bin body is used to place the plaster of Paris powder; the storage bin is also provided with a discharge valve assembly, wherein the discharge valve assembly is configured to connect the inner cavity of the bin body with at least one of the first discharge port and the second discharge port; A first conveying assembly, arranged corresponding to the first discharge port, and arranged to convey the material output from the first discharge port to the gypsum board production device; and A second conveying component is arranged corresponding to the second discharge port, and is arranged to convey the material output from the second discharge port to the return port.

[0006] A plaster of Paris powder production line comprises the plaster of Paris powder storage device as described in the above embodiment.

[0007] A gypsum board production line comprises the plaster of Paris powder production line as described in the above embodiment.

[0008] The technical effects of the plaster of Paris powder storage device of the embodiment of the present application are as follows: The storage device for gypsum powder provided in the embodiment of the present application has a storage bin provided with two discharge ports, namely, a first discharge port and a second discharge port, and the storage bin is also provided with a discharge valve assembly. The discharge valve assembly can selectively connect the bin body with the first discharge port, and convey the material to the gypsum board production device through the first conveying assembly, so that the gypsum powder in the storage bin whose mixing and aging time meets the gypsum board production requirements can be preferentially conveyed to the gypsum board production device through the first discharge port and the first conveying assembly for producing gypsum boards. The discharge valve assembly can also selectively connect the bin body with the second discharge port, and return the material to the bin body through the second conveying assembly, so that the gypsum powder in the storage bin whose mixing and aging time is too long can be returned to the bin body through the second discharge port and the second conveying assembly, and mixed and aged again with the newly produced gypsum powder that has just entered the bin body, so that the phase composition of the gypsum powder in the storage bin is consistent and meets the gypsum board production requirements. The gypsum powder storage device of the present application can ensure that the phase composition consistency of the gypsum powder used in the production of gypsum boards is good, thereby improving the quality of the subsequently produced gypsum boards.

[0009] Other features and advantages of the present application will be described in the following description, and partly become apparent from the description, or be understood by implementing the present application. Other advantages of the present application can be realized and obtained by the schemes described in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The accompanying drawings are used to provide an understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0011] Figure 1 This is a schematic structural diagram of a plaster of Paris powder storage device according to an embodiment of the present application. DETAILED DESCRIPTION

[0012] The present application describes multiple embodiments, but the description is exemplary rather than restrictive, and it is obvious to those skilled in the art that there may be more embodiments and implementations within the scope of the embodiments described in the present application. The embodiments, features, and elements disclosed in the present application may also be combined with any conventional features or elements.

[0013] Please refer to the instruction manual Figure 1 A schematic structural diagram of a plaster of Paris powder storage device according to an exemplary embodiment of the present application is shown. Figure 1 The lines with larger arrows in the figure represent the material flow direction, and the lines with smaller arrows are the indicator lines of the drawing numbers.

[0014] like Figure 1 The embodiment of the present application shown provides a storage device for gypsum powder, including a storage bin 1, a first conveying assembly 2, and a second conveying assembly 3. The storage bin 1 includes a bin body 11 having an inner cavity, a return port 12, a first discharge port 13, and a second discharge port 14. The inner cavity of the bin body 11 is used to place gypsum powder; the storage bin 1 is also provided with a discharge valve assembly 15, which is configured to connect the inner cavity of the bin body 11 with at least one of the first discharge port 13 and the second discharge port 14; the first conveying assembly 2 is correspondingly arranged with the first discharge port 13, and is configured to convey the material output from the first discharge port 13 to the gypsum board production device; the second conveying assembly 3 is correspondingly arranged with the second discharge port 14, and is configured to convey the material output from the second discharge port 14 to the return port 12.

[0015] Specifically, the storage bin 1 of the plaster of Paris powder storage device provided in the embodiment of the present application still has a feed port, and the newly produced plaster of Paris powder enters the inner cavity of the bin body 11 through the feed port for mixing and aging of the plaster of Paris powder. The plaster of Paris powder storage device of the present application, its storage bin 1 is provided with two discharge ports, a first discharge port 13 and a second discharge port 14, and the storage bin 1 is also provided with a discharge valve assembly 15. In actual use, the mixing and aging time of the plaster of Paris powder in the bin body 11 is first determined. The plaster of Paris powder that has been aged for more than a certain period of time will affect the strength and bonding properties of the gypsum board, making it difficult to ensure the quality of the gypsum board. However, external factors such as equipment failure of subsequent gypsum board production devices will cause the plaster of Paris powder to be placed in the storage bin 1 for too long and cannot be used in time. The discharge valve assembly 15 can selectively connect the bin 11 with the first discharge port 13, and convey the material to the gypsum board production device through the first conveying assembly 2, so that the gypsum powder in the storage bin 1 whose mixing and aging time meets the subsequent gypsum board production requirements can be preferentially conveyed to the gypsum board production device through the first discharge port 13 and the first conveying assembly 2 for producing gypsum boards. The discharge valve assembly 15 can also selectively connect the bin 11 with the second discharge port 14, and return the material to the bin 11 through the second conveying assembly 3, so that the gypsum powder in the storage bin 1 whose mixing and aging time is too long can be returned to the bin 11 through the second discharge port 14 and the second conveying assembly 3, and mixed and aged again with the newly produced gypsum powder that has just entered the bin 11 through the feed port, so that the phase composition consistency of the gypsum powder in the storage bin 1 is good and meets the subsequent production requirements. The gypsum powder storage device of the present application can ensure that the phase composition consistency of the gypsum powder used in subsequent production is good, thereby improving the quality of the gypsum board produced subsequently.

[0016] It is understandable that in actual use, if the aging time of the gypsum powder in the silo 11 is too short, the gypsum powder is not fully mixed and aged, and the phase composition of the gypsum powder is uneven, which does not meet the subsequent gypsum board production requirements.

[0017] In an exemplary embodiment, the storage bin 1 is provided with a timer, and the timer is used to calculate the aging time of the plaster of Paris powder in the bin body 11 .

[0018] Specifically, according to actual production experience, when the gypsum powder is placed in the silo 11 for aging time of 3 to 5 days, the gypsum powder meets the production requirements of gypsum board after aging; when the gypsum powder is placed for aging time greater than or equal to 7 days, the gypsum powder is over-aged, which will affect the strength and bonding properties of the subsequently produced gypsum board.

[0019] Optionally, the plaster of Paris powder storage device is provided with a plurality of storage bins 1, the number of timers is a plurality, and the plurality of storage bins 1 are provided in one-to-one correspondence with the plurality of timers. Each timer calculates the placement and aging time of the plaster of Paris powder in the corresponding storage bin 1 respectively.

[0020] The timer calculates the placement and aging time of a batch of gypsum powder entering the storage bin 1 in the bin body 11. When the placement and aging time calculated by the timer is the set time, the batch of gypsum powder meets the gypsum board production requirements after mixing and aging. The set time can be set to 3 to 5 days. When the timer calculates that the placement and aging time of a batch of gypsum powder is less than the set time, the batch of gypsum powder needs to continue to be placed and aged in the bin body 11. When the timer calculates that the placement and aging time of a batch of gypsum powder is greater than the set time, the batch of gypsum powder needs to be fed back to the bin body 11 and continue to be mixed and aged with the newly produced gypsum powder just transported to the bin body 11.

[0021] It can be understood that the number of storage bins 1 and bin bodies 11 of the plaster of Paris powder storage device of the embodiment of the present application can be adjusted accordingly according to the scale of the gypsum board production line.

[0022] In an exemplary embodiment, Figure 1 As shown, the discharge valve assembly 15 includes a three-way discharge valve, the bin body 11 is provided with a discharge port 111 and a return port 12, the three-way discharge valve is provided with a feed port (not shown in the figure), a first discharge port 13 and a second discharge port 14, and the feed port is connected to the discharge port 111 accordingly.

[0023] Specifically, the three-way discharge valve can selectively connect the discharge port 111 of the silo 11 with at least one of the first discharge port 13 and the second discharge port 14. When the operator delivers materials to the gypsum board production device through the first conveying assembly 2, the three-way discharge valve connects the discharge port 111 with the first discharge port 13; when the operator performs a material return operation through the second conveying assembly 3, the three-way discharge valve connects the discharge port 111 with the second discharge port 14.

[0024] In an exemplary embodiment, the discharge valve assembly 15 includes a first discharge valve (not shown in the figure) and a second discharge valve (not shown in the figure), the bin body 11 is provided with a first discharge port (not shown in the figure), a second discharge port (not shown in the figure) and a return port 12, the first discharge valve is provided with a first feed port (not shown in the figure) and a first discharge port 13, the second discharge valve is provided with a second feed port (not shown in the figure) and a second discharge port 14, the first feed port is correspondingly connected to the first discharge port, and the second feed port is correspondingly connected to the second discharge port.

[0025] Specifically, the specific structure of the discharge valve assembly 15 of the present application is not limited to the three-way discharge valve, and the first discharge valve and the second discharge valve, and can also be set to other structural forms, which can achieve selective connection between the warehouse body 11 and the first discharge port 13 and the second discharge port 14, all within the protection scope of the present application.

[0026] In an exemplary embodiment, the type of the discharge valve assembly 15 includes at least one of a manual gate valve and an automatic control valve, wherein the automatic control valve includes at least one of a pneumatic valve and an electric valve.

[0027] Optionally, in actual use, the discharge valve assembly 15 can adopt two types: a manual gate valve and an automatic control valve. When the automatic control valve fails, the manual gate valve can be manually operated to perform discharge and return operations, so as not to delay the subsequent gypsum board production.

[0028] In an exemplary embodiment, Figure 1 As shown, there are multiple storage bins 1, each storage bin 1 is provided with a discharge valve assembly 15, the first conveying assembly 2 is arranged corresponding to the first discharge port 13 of each storage bin 1, and the second conveying assembly 3 is arranged corresponding to the second discharge port 14 of each storage bin 1.

[0029] Specifically, Figure 1 In the embodiment shown, the number of storage bins 1 is 3, and the number of storage bins 1 of the plaster of Paris powder storage device of the present application can also be set to 1, 2, 4 or more, all within the protection scope of the present application. The number and volume of the storage bins 1 should match the production scale of the gypsum board production line.

[0030] It can be understood that the number of storage bins 1 is set to multiple, which can expand the actual application scope of the plaster of Paris powder storage device of the present application. For example, the storage bins 1 of the plaster of Paris powder storage device of the present application can be set to 2 or 3. If the aging time of a batch of plaster of Paris powder placed in one of the storage bins 1 exceeds the set time (the set time is generally 3 to 5 days) due to equipment failure of the gypsum board production device, the operator can also consider using another batch of plaster of Paris powder placed in another storage bin 1. If the mixed aging time of the other batch of plaster of Paris powder meets the production requirements, the batch of plaster of Paris powder can be used in time without delaying the production of gypsum boards. In addition, the operator can perform a recycling operation on the batch of plaster of Paris powder whose aging time exceeds the set time, and age it again with the newly produced plaster of Paris powder just input into the storage bin 1 for subsequent production use, so that a batch of plaster of Paris powder with too long aging time will not be wasted, and the work of the gypsum board production line will not be delayed.

[0031] In an exemplary embodiment, the plaster of Paris powder storage device further includes a control component, the storage bins 1 are provided in a plurality, and the control component is electrically connected to the timer, the discharge valve component 15, the first conveying component 2 and the second conveying component 3.

[0032] Specifically, the control component is provided with a control panel, which communicates with the timer, and the control panel displays the aging time of the corresponding batch of gypsum powder in each storage bin 1. The control component communicates with the gypsum board production device, obtains the instruction of the gypsum board production device to convey materials, and matches the storage bin 1 corresponding to one or some batches of gypsum powder whose aging time meets the production requirements, and starts the discharge valve assembly 15 of the storage bin 1 to convey the material to the gypsum board production device through the first conveying assembly 2. The control component determines the storage bin 1 corresponding to one or some batches of gypsum powder with too long aging time, and starts the discharge valve assembly 15 of the storage bin 1 to return the material to the storage bin 1 with new material input through the second conveying assembly 3.

[0033] In an exemplary embodiment, Figure 1 As shown, the plaster of Paris powder storage device further includes a first material detection valve 4 , which is located near the first discharge port 13 , and is configured to detect whether there is material output from the first discharge port 13 .

[0034] The plaster of Paris powder storage device further comprises a second material detection valve 5 , which is located near the second discharge port 14 , and is configured to detect whether there is material output from the second discharge port 14 .

[0035] Specifically, the first material detection valve 4 and the second material detection valve 5 are devices for mechanically detecting the presence of materials, so that timely feedback can be given on whether upstream materials are blocked, without the operator having to go to the site to check whether the storage bin 1 is blocked.

[0036] It can be understood that if a discharger is provided at the first discharge port 13, the first material detection valve 4 can be located at the outlet of the discharger; if a discharger is not provided at the first discharge port 13, the first material detection valve 4 can be provided at the first discharge port 13. The above situations are all within the protection scope of the present application.

[0037] If a discharger is provided at the second discharge port 14, the second material detection valve 5 can be located at the discharger outlet; if a discharger is not provided at the second discharge port 14, the second material detection valve 5 can be provided at the second discharge port 14. The above situations are all within the protection scope of this application.

[0038] In an exemplary embodiment, Figure 1 As shown, the first discharge port 13 is connected to the first discharger 6 , the second discharge port 14 is connected to the second discharger 7 , the outlet of the first discharger 6 is arranged corresponding to the first conveying component 2 , and the outlet of the second discharger 7 is arranged corresponding to the second conveying component 3 .

[0039] Optionally, both the first discharger 6 and the second discharger 7 may adopt star-shaped dischargers, which can ensure that the air flow pressure in the conveying pipeline does not leak and can safely convey and collect materials.

[0040] In an exemplary embodiment, the first discharger 6 and the second discharger 7 are both variable frequency dischargers.

[0041] Specifically, the first discharger 6 is configured as a variable frequency discharger, so that the material discharge amount of the first discharger 6 can be adjusted according to the production speed of the gypsum board production device, thereby ensuring the production amount of the gypsum board production line and the uniformity of material mixing. The second discharger 7 is configured as a variable frequency discharger, so that the material discharge amount of the second discharger 7 can be adjusted according to the amount of newly produced materials delivered to the silo 11, thereby ensuring that the aged gypsum powder and the newly produced gypsum powder returned to the silo 11 can be evenly mixed.

[0042] In an exemplary embodiment, Figure 1 As shown, the first conveying assembly 2 includes a first conveyor 21 and a longitudinally arranged first elevator 22 , the inlet of the first conveyor 21 is arranged corresponding to the first discharge port 13 , and the outlet of the first conveyor 21 is arranged corresponding to the inlet of the first elevator 22 .

[0043] The second conveying assembly 3 includes a second conveyor 31, a longitudinally arranged second elevator 32 and a third conveyor 33. The inlet of the second conveyor 31 is arranged corresponding to the second discharge port 14, the outlet of the second conveyor 31 is arranged corresponding to the inlet of the second elevator 32, the outlet of the second elevator 32 is arranged corresponding to the inlet of the third conveyor 33, and the outlet of the third conveyor 33 is arranged corresponding to the return port 12.

[0044] Optionally, the first conveyor 21 and the second conveyor 31 may be conveyor zipper machines, and the first elevator 22 and the second elevator 32 may be bucket elevators.

[0045] In an exemplary embodiment, Figure 1 As shown, the third conveyor 33 is an air chute, and the number of outlets 33 - 1 of the air chute is equal to the number of the return ports 12 and corresponds one to one.

[0046] The air chute is provided with a fan 33 - 2 , and the fan 33 - 2 is configured to supply air to the conveying channel of the air chute.

[0047] Specifically, the number of outlets 33-1 of the air chute is equal to and corresponds to the number of return ports 12 of the storage bin 1, so that the gypsum powder that has been aged for too long in a storage bin 1 can be returned to any storage bin 1 through the outlet 33-1 of the air chute. Preferably, the gypsum powder that has been aged for too long can be returned to a bin body 11 into which newly produced gypsum powder is input.

[0048] An embodiment of the present application provides a plaster of Paris powder production line, comprising a plaster of Paris powder storage device as described in any one of the above exemplary embodiments.

[0049] Specifically, the plaster powder production line provided in the embodiment of the present application further includes a plaster powder frying device and a plaster powder grinding device. The plaster powder production line provided in the embodiment of the present application includes the plaster powder storage device described in any one of the above exemplary embodiments, and thus has the structural features and advantages of the plaster powder storage device described in any one of the above exemplary embodiments, which will not be described in detail here.

[0050] An embodiment of the present application provides a gypsum board production line, including a plaster of Paris powder production line as described in any one of the above exemplary embodiments.

[0051] Specifically, the gypsum board production line provided in the embodiment of the present application further includes a gypsum board production device. The gypsum board production line provided in the embodiment of the present application includes a gypsum powder production line and a gypsum powder storage device as described in any one of the above exemplary embodiments, and thus has the structural features and advantages of the gypsum powder storage device described in any one of the above exemplary embodiments, which will not be described in detail here.

[0052] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0053] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0054] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0055] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0056] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0057] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A plaster of Paris powder storage device, characterized in that: include: A storage bin, comprising a bin body with an inner cavity, a return port, a first discharge port and a second discharge port, wherein the inner cavity of the bin body is used to place the plaster of Paris powder; the storage bin is further provided with a discharge valve assembly, wherein the discharge valve assembly is configured to connect the inner cavity of the bin body with at least one of the first discharge port and the second discharge port; a first conveying assembly, arranged corresponding to the first discharge port, and arranged to convey the material output from the first discharge port to the gypsum board production device; and A second conveying component is arranged corresponding to the second discharge port, and is arranged to convey the material output from the second discharge port to the return port.

2. The plaster of Paris powder storage device according to claim 1, characterized in that: The discharge valve assembly includes a three-way discharge valve, the bin body is provided with a discharge port and the return port, the three-way discharge valve is provided with a feed port, the first discharge port and the second discharge port, and the feed port is connected to the discharge port correspondingly; or The discharge valve assembly includes a first discharge valve and a second discharge valve, the bin body is provided with a first discharge port, a second discharge port and the return port, the first discharge valve is provided with a first feed port and the first discharge port, the second discharge valve is provided with a second feed port and the second discharge port, the first feed port is correspondingly connected to the first discharge port, and the second feed port is correspondingly connected to the second discharge port.

3. The plaster of Paris powder storage device according to claim 2, characterized in that: The type of the discharge valve assembly includes at least one of a manual gate valve and an automatic control valve; Wherein, the automatic control valve includes at least one of a pneumatic valve and an electric valve.

4. The plaster of Paris powder storage device according to any one of claims 1 to 3, characterized in that: There are multiple storage bins, each of which is provided with the discharge valve assembly, the first conveying assembly is arranged corresponding to the first discharge port of each storage bin, and the second conveying assembly is arranged corresponding to the second discharge port of each storage bin.

5. The plaster of Paris powder storage device according to any one of claims 1 to 3, characterized in that: The plaster of Paris powder storage device further comprises a first material detection valve, which is located near the first material outlet, and is configured to detect whether there is material output from the first material outlet; The plaster of Paris powder storage device further comprises a second material detection valve, which is located near the second discharge port, and the second material detection valve is configured to detect whether there is material output from the second discharge port.

6. The plaster of Paris powder storage device according to any one of claims 1 to 3, characterized in that: The first discharge port is connected to a first discharger, the second discharge port is connected to a second discharger, the outlet of the first discharger is arranged corresponding to the first conveying component, and the outlet of the second discharger is arranged corresponding to the second conveying component.

7. The plaster of Paris powder storage device according to claim 6, characterized in that: The first discharger and the second discharger are both variable frequency dischargers.

8. The plaster of Paris powder storage device according to any one of claims 1 to 3, characterized in that: The first conveying assembly includes a first conveyor and a first elevator arranged longitudinally, the inlet of the first conveyor is arranged corresponding to the first discharge port, and the outlet of the first conveyor is arranged corresponding to the inlet of the first elevator; The second conveying assembly includes a second conveyor, a longitudinally arranged second elevator and a third conveyor, the inlet of the second conveyor is arranged corresponding to the second discharge port, the outlet of the second conveyor is arranged corresponding to the inlet of the second elevator, the outlet of the second elevator is arranged corresponding to the inlet of the third conveyor, and the outlet of the third conveyor is arranged corresponding to the return port.

9. The plaster of Paris powder storage device according to claim 8, characterized in that: The third conveyor is an air chute, and the number of outlets of the air chute is equal to the number of the return ports and corresponds one to one; The air chute is provided with a fan, and the fan is configured to supply air to the conveying channel of the air chute.

10. A plaster of Paris powder production line, characterized in that: The invention comprises a plaster of Paris powder storage device as claimed in any one of claims 1 to 9.

11. A gypsum board production line, characterized in that: Comprising the plaster of Paris powder production line as described in claim 10.

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