Alpha type high-strength gypsum slurry separating device

Abstract

The application belongs to the technical field of high-pressure slurry solid-liquid separation, and discloses a kind of α-type high-strength gypsum slurry separation device.The α-type high-strength gypsum slurry separation device includes device main body, liquid discharge device and material conveying device;The inside of the device main body has a cavity structure, so that the α-type high-strength gypsum slurry is separated into the upper layer of liquid phase water and the lower layer of thick phase slurry mixture;The lower end of the device main body is provided with a discharge channel, and the discharge channel is used to output the thick phase slurry after separation;The liquid discharge device is arranged at the upper end of the device main body and is communicated with the cavity structure to discharge the liquid components in the cavity structure.The α-type high-strength gypsum slurry separation device can avoid the deposition and blockage of slurry during separation, and can also ensure the pressure in the device main body equipment, improving the separation efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high-pressure slurry solid-liquid separation, and particularly relates to an alpha-type high-strength gypsum slurry separation device. BACKGROUND

[0002] Alpha-type calcium sulfate hemihydrate is also called high-strength building gypsum, and has high compactness and strength after hardening, and is therefore widely used for manufacturing high-strength gypsum components and gypsum boards. At present, the main way to realize resource utilization of by-product desulfurization gypsum produced by flue gas desulfurization in a thermal power plant is to convert the by-product desulfurization gypsum into alpha-type calcium sulfate hemihydrate.

[0003] However, due to the inherent chlorine components in fuel coal and desulfurization lime, the content of chlorine ions in the desulfurization gypsum obtained by flue gas wet desulfurization is often high. In order to promote the resource utilization of desulfurization gypsum, the prior art currently mainly uses a subcritical hydrothermal method to upgrade the desulfurization gypsum, but the product obtained by the subcritical hydrothermal method is alpha-type high-strength gypsum slurry, and alpha-type calcium sulfate hemihydrate cannot be directly obtained.

[0004] The prior art usually performs solid-liquid separation treatment on the alpha-type high-strength gypsum slurry obtained by the subcritical hydrothermal method to obtain finished alpha-type calcium sulfate hemihydrate. However, the separation devices currently used for solid-liquid separation treatment mainly include static separation tanks, centrifuges and the like. Since the alpha-type calcium sulfate hemihydrate needs to be operated at high temperature during the separation process, in order to avoid vaporization during the separation process, the alpha-type calcium sulfate hemihydrate needs to be operated at high pressure. Some of the existing separation devices cannot operate at high temperature and high pressure, and the alpha-type calcium sulfate hemihydrate is prone to deposition and hardening during the separation process. However, the conventional static separation device cannot be used for the separation of alpha-type calcium sulfate hemihydrate, and cannot be continuously operated. SUMMARY

[0005] In order to solve the above technical problems and realize continuous separation of alpha-type calcium sulfate hemihydrate slurry under high temperature and high pressure conditions, the present application provides an alpha-type high-strength gypsum slurry separation device, which realizes continuous separation of alpha-type calcium sulfate hemihydrate slurry under high temperature and high pressure conditions by arranging a feed paddle and a pressure-reducing paddle, effectively avoids deterioration of the alpha-type calcium sulfate hemihydrate, and also avoids hydration, hardening and blockage of the alpha-type calcium sulfate hemihydrate during the separation process.

[0006] The application provides an alpha high-strength gypsum slurry separation device, which comprises a device main body, a feeding device and a liquid discharge device.

[0007] The alpha high-strength gypsum slurry separation device is achieved through the following technical scheme:

[0008] The alpha high-strength gypsum slurry separation device comprises a device main body, a feeding device and a liquid discharge device.

[0009] It should be noted that the device main body has a cavity structure inside, which provides a separation space for the solid-liquid separation of the alpha high-strength gypsum slurry to process the alpha high-strength gypsum slurry into a mixed phase with liquid-phase water in the upper layer and thick-phase slurry in the lower layer.

[0010] In the application, the device main body is provided with a feeding port at the upper end, which is used for inputting the alpha high-strength gypsum slurry.

[0011] In the application, the device main body is provided with a discharging channel at the lower end, which is used for outputting the thick-phase slurry after separation.

[0012] In the application, the liquid discharge device is arranged at the upper end of the device main body and communicates with the cavity structure to discharge the liquid components in the cavity structure.

[0013] In the application, the feeding device comprises a feeding paddle, a feeding pressure-reducing paddle, a driving shaft and a driving device.

[0014] It should be noted that the feeding paddle comprises a first rotating shaft and a feeding paddle blade, and the flux of the feeding paddle is 1.3-1.5 times that of the feeding pressure-reducing paddle.

[0015] The first rotating shaft is vertically arranged at the lower end of the cavity structure, the material conveying paddle has a spiral ring structure distributed along the height direction of the first rotating shaft, and the two ends of the material conveying paddle are fixed to the upper end and the lower end of the first rotating shaft, respectively. During operation, the material conveying paddle can rotate with the rotation of the first rotating shaft, thereby realizing stirring of the thick-phase slurry to improve the looseness of the thick-phase slurry, thereby preliminarily realizing pressure reduction treatment of the thick-phase slurry. The material conveying paddle of the present application is also uniformly distributed with a plurality of material relaxation holes, which can keep the same conveying flux of the material conveying paddle and the material pressure reduction paddle, and prevent the extrusion of the material between the material conveying paddle and the material pressure reduction paddle due to different conveying fluxes, thereby preventing the material from being hardened at the material conveying paddle.

[0016] The material pressure reduction paddle is located in the discharge channel, is arranged at the lower end of the first rotating shaft, and is coaxially arranged with the first rotating shaft. The material pressure reduction paddle is located at the discharge channel, and during operation, can rely on the rotating force generated by rotation to discharge the thick-phase slurry generated by static separation inside the device body through the discharge channel. At the same time, the rotating force generated by the material pressure reduction paddle can stir the thick-phase slurry to further improve the looseness of the thick-phase slurry, thereby further realizing pressure reduction treatment of the thick-phase slurry.

[0017] The upper end of the driving shaft is fixedly connected with the material pressure reduction paddle and is coaxially arranged with the material pressure reduction paddle, and the lower end of the driving shaft is drivingly connected with the output end of the driving device, so that the driving shaft can be driven to rotate by the driving device, thereby driving the material conveying paddle and the material pressure reduction paddle to rotate synchronously, thereby realizing pressure reduction treatment of the thick-phase slurry.

[0018] In some preferred embodiments of the present application, the feeding and decompression paddle of the present application comprises a second rotating shaft and a decompression paddle. The second rotating shaft is coaxially arranged with the first rotating shaft, and the upper end of the second rotating shaft is drivingly connected with the lower end of the first rotating shaft, and the lower end of the second rotating shaft is drivingly connected with the upper end of the driving shaft. The decompression paddle has a spiral ring structure distributed along the height direction of the second rotating shaft, and the two ends of the decompression paddle are fixed to the upper end and the lower end of the second rotating shaft, respectively. It should be noted that the decompression paddle of the present application can rotate with the rotation of the second rotating shaft during operation, and can generate a rotating force acting on the thick-phase slurry. Moreover, the spiral ring structure of the decompression paddle can provide downward power for the thick-phase slurry during rotation, thereby promoting the downward conveying of the thick-phase slurry, and thereby achieving decompression treatment during feeding. In addition, since the decompression paddle of the present application does not have any hole structure, the feeding and decompression paddle can seal the discharge channel when it is in a stationary state during the static separation process, thereby maintaining the pressure in the device body during the separation process.

[0019] In some preferred embodiments of the present application, the liquid discharge device comprises a liquid discharge pipe, a variable-diameter pipeline and a liquid outlet connected in sequence. In some more preferred embodiments of the present application, the liquid discharge pipe is in communication with the cavity structure, and the liquid discharge pipe is coaxially arranged with the driving shaft.

[0020] In some more preferred embodiments of the present application, the lower end of the variable-diameter pipeline has a larger diameter than the upper end of the variable-diameter pipeline, so as to realize the fixation of the filter screen.

[0021] In some more preferred embodiments of the present application, a filter screen is arranged between the variable-diameter pipeline and the liquid discharge pipe.

[0022] In some more preferred embodiments of the present application, the diameter of the filter screen holes on the filter screen is <5 μm, so as to effectively prevent large particles and large solids from entering the variable-diameter pipeline.

[0023] In some more preferred embodiments of the present application, a filter screen cleaning brush is arranged in the liquid discharge pipe, the brush head of the filter screen cleaning brush is in contact with the bottom of the filter screen, and a third rotating shaft is further arranged at the bottom of the filter screen cleaning brush. The third rotating shaft is coaxially drivingly connected with the driving shaft, so that when the driving device drives the driving shaft to rotate, the third rotating shaft can be simultaneously driven to rotate, thereby enabling the filter screen cleaning brush to rotate with the rotation of the third rotating shaft, so as to realize the sweeping of the filter screen, thereby avoiding the blockage of the filter screen. In addition, the third rotating shaft can further reduce the space of the liquid discharge pipe, thereby avoiding the carrying amount of liquid-phase to solid particles.

[0024] In some preferred embodiments of the present application, the bottom of the filter screen is provided with a third support rod for fixing the position of the filter screen in the variable-diameter pipeline, and the bottom of the third support rod is fixed to the bottom of the liquid discharge pipe by bolts. In some more preferred embodiments of the present application, the third support rod is hollow inside, and the inner diameter of the third support rod is greater than the outer diameter of the filter screen cleaning brush, so that the third support rod can fix the position of the filter screen in the variable-diameter pipeline together with the variable-diameter pipeline above, without interfering with the rotation of the filter screen cleaning brush driven by the third rotating shaft.

[0025] In some preferred embodiments of the present application, the brush head includes a plurality of brush heads arranged uniformly to improve the cleaning effect of the filter screen cleaning brush on the filter screen.

[0026] In some more preferred embodiments of the present application, the feed inlet is wedge-shaped and extends into the device body, and the insertion length of the feed inlet near one end of the liquid discharge device is longer than that of the other end, so as to prevent a large amount of solid particles from entering the liquid discharge pipe and causing the liquid discharge pipe to be blocked during feeding.

[0027] In some preferred embodiments of the present application, the material relaxation hole includes but is not limited to a round hole and a crack.

[0028] In some preferred embodiments of the present application, the upper end of the device body is further provided with a radar material level meter, and the radar material level meter is interlocked with the driving device. When the radar material level meter detects that the height of the thick-phase material level in the separation tank is too high, the rotation speed of the driving device is adjusted to control the discharge amount.

[0029] In some preferred embodiments of the present application, the α-type high-strength gypsum slurry separation device further includes a pressure sensor interlocked with the driving device. The pressure sensor is arranged on the static separation tank body and is used to monitor the pressure inside the separation tank. When the radar material level meter detects that the height of the thick-phase material level in the separation tank is normal, but the pressure sensor detects that the pressure is low, the rotation speed of the driving device is increased to increase the feeding speed; and when the pressure sensor detects that the pressure is too high, the rotation speed of the driving device is reduced to slow down the feeding speed.

[0030] In some preferred embodiments of the present application, the driving device is a driving motor.

[0031] In some preferred embodiments of the present application, the driving device is interlocked with the pressure sensor respectively, so as to control the rotation speed of the driving device according to the pressure change of the pressure sensor, and then control the discharge speed of the feeding paddle and the feeding pressure-reducing paddle by controlling the rotation speed of the driving device, thereby controlling the pressure in the device body.

[0032] In some preferred embodiments of the application, the alpha-type high-strength gypsum slurry separation device further comprises a driving device support for placing the driving device.

[0033] In some preferred embodiments of the application, the alpha-type high-strength gypsum slurry separation device further comprises a main body support for placing the device main body.

[0034] Compared with the prior art, the application has the following beneficial effects:

[0035] The alpha-type high-strength gypsum slurry separation device of the application comprises a device main body, a material conveying device, and a liquid discharge device. The device main body is provided with a feeding port and the liquid discharge device at the upper end, and has a cavity structure inside, so that the alpha-type high-strength gypsum slurry entering through the feeding port is first subjected to static separation in the cavity structure, so as to process the alpha-type high-strength gypsum slurry into a mixed phase with liquid-phase water in the upper layer and thick-phase slurry in the lower layer. The liquid-phase water in the upper layer is discharged from the device main body through the liquid discharge device at the upper end of the device main body. The remaining thick-phase slurry in the lower layer is subjected to stirring by opening the driving device, so that the driving device drives the driving shaft to rotate, and then the driving shaft drives the material conveying and pressure reducing paddle and the first rotating shaft to rotate synchronously. The material conveying paddle rotates with the first rotating shaft and generates a rotating force acting on the thick-phase slurry, so as to stir the thick-phase slurry and break the looseness of the thick-phase slurry during the stirring process, thereby preliminarily realizing pressure reduction treatment of the thick-phase slurry. At the same time, the spiral ring structure can provide downward power for the thick-phase slurry during rotation, thereby promoting the downward conveying of the thick-phase slurry to the material conveying and pressure reducing paddle below. The rotation of the material conveying and pressure reducing paddle generates a rotating force on the thick-phase slurry, so as to stir the thick-phase slurry and further improve the looseness of the thick-phase slurry, thereby further realizing pressure reduction treatment of the thick-phase slurry. In addition, the material conveying paddle of the application is uniformly provided with a plurality of material relaxation holes. On the one hand, the material conveying paddle and the material conveying and pressure reducing paddle can maintain the same conveying flux, and on the other hand, the material conveying paddle and the material conveying and pressure reducing paddle can prevent the extrusion of the material due to the different conveying fluxes between the material conveying paddle and the material conveying and pressure reducing paddle, thereby preventing the phenomenon of material hardening at the material conveying paddle.

[0036] The alpha-type high-strength gypsum slurry separation device of the application can avoid the deposition and clogging of the slurry during the separation process, and can also ensure the pressure in the device main body equipment, thereby improving the separation efficiency and realizing online continuous operation.

[0037] The material relaxation unit avoids the deposition and clogging of the slurry during the separation process by providing the material conveying paddle and the pressure reducing material conveying paddle in the device main body, thereby improving the separation efficiency.

[0038] The alpha type high-strength gypsum slurry separation device can solve the separation problem of industrial waste gypsum in the green dechlorination and upgrading process by using the hydrothermal method, provide corresponding technical support for the continuous and efficient operation of the waste gypsum dechlorination and upgrading system by using the hydrothermal method, and promote the process of high-value conversion of industrial waste gypsum. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 It is an overall structure schematic diagram of the alpha type high-strength gypsum slurry separation device.

[0040] Figure 2 It is a structure schematic diagram of the material relaxation hole.

[0041] Figure 3 It is a structure schematic diagram of the liquid discharge device.

[0042] BRIEF DESCRIPTION OF DRAWINGS

[0043] 1, device main body; 101, feed inlet; 102 discharge channel; 2, liquid discharge device; 201, liquid outlet; 202, reducing pipe; 204, liquid discharge pipe; 3, material conveying device; 301, material conveying paddle; 3011, first rotating shaft; 3012, material conveying paddle blade; 3013, material relaxation hole; 302, material conveying pressure reducing paddle; 3021, second rotating shaft; 3022, pressure reducing paddle blade; 303, driving shaft; 304, driving device; 305, driving device support; 4, filter screen; 5, filter screen support rod; 6, radar material level meter; 7, third rotating shaft; 8, filter screen cleaning brush. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the application will be clearly and completely described below.

[0045] Example 1

[0046] Please refer to Figure 1 The embodiment provides an alpha type high-strength gypsum slurry separation device, which comprises a device main body 1, a liquid discharge device 2 and a material conveying device 3.

[0047] It should be noted that the device main body 1 has a cavity structure inside, which provides a separation space for the solid-liquid separation of the alpha type high-strength gypsum slurry. The device main body 1 is provided with a feed inlet 101 at the upper end, and the alpha type high-strength gypsum slurry is input into the cavity structure inside the device main body 1 through the feed inlet 101, and then is separated by standing in the cavity structure, so that the alpha type high-strength gypsum slurry is treated into a mixed phase with liquid phase water on the upper layer and thick phase slurry on the lower layer. And the device main body 1 is provided with a discharge channel 102 at the lower end, which is used to output the thick phase slurry after separation.

[0048] The liquid discharge device 2 of the embodiment is arranged at the upper end of the device body 1 and communicates with the cavity structure to discharge the liquid component in the cavity structure. It should be noted that during operation, the alpha-type high-strength gypsum slurry is continuously fed from the feeding port 101, and the alpha-type high-strength gypsum slurry itself has a residual pressure generated by the previous hydrothermal reaction, so that the feeding pressure is higher than the pressure in the device body 1, and therefore the liquid component in the alpha-type high-strength gypsum slurry entering the device body 1 can only be discharged through the liquid discharge pipe 204.

[0049] Please refer to Figure 1 In the embodiment, the material conveying device 3 includes a material conveying paddle 301, a material conveying pressure reducing paddle 302, a driving shaft 303, and a driving device 304. The material conveying paddle 301 includes a first rotating shaft 3011 and a material conveying paddle blade 3012. The first rotating shaft 3011 is vertically arranged at the lower end of the cavity structure, and the material conveying paddle blade 3012 has a spiral ring structure distributed along the height direction of the first rotating shaft 3011, and the two ends of the material conveying paddle blade 3012 are fixed to the upper end and the lower end of the first rotating shaft 3011, respectively. During operation, the material conveying paddle blade 3012 can rotate with the first rotating shaft 3011 and generate a rotating force acting on the thick-phase slurry, so that the thick-phase slurry is stirred, and the loose degree of the thick-phase slurry can be destroyed during the stirring process, thereby preliminarily achieving pressure reduction treatment of the thick-phase slurry. At the same time, the spiral ring structure can provide downward power for the thick-phase slurry during rotation, thereby promoting the downward conveying of the thick-phase slurry. In addition, the material conveying paddle blade 3012 of the present application is also uniformly distributed with a plurality of material relaxation holes 3013. On the one hand, the material relaxation holes 3013 can make the material conveying paddle 301 and the material conveying pressure reducing paddle 302 have the same conveying flux, and on the other hand, the material relaxation holes 3013 can prevent the material conveying paddle 301 and the material conveying pressure reducing paddle 302 from being extruded due to different conveying fluxes, thereby preventing the phenomenon of material hardening at the material conveying paddle 301.

[0050] The material conveying pressure reducing paddle 302 is located in the discharging channel 102, and the material conveying pressure reducing paddle 302 is arranged at the lower end of the first rotating shaft 3011 and coaxially arranged with the first rotating shaft 3011. During operation, the material conveying pressure reducing paddle 302 can rely on the rotating force generated by rotation to discharge the thick-phase slurry generated by static separation inside the device body 1 through the discharging channel 102. At the same time, the rotating force generated by the material conveying pressure reducing paddle 302 can stir the thick-phase slurry to further improve the loose degree of the thick-phase slurry, thereby further achieving pressure reduction treatment of the thick-phase slurry.

[0051] And the upper end of the driving shaft 303 of the application is fixedly connected with the material conveying and pressure reducing paddle 302, and is coaxially arranged with the material conveying and pressure reducing paddle 302; and the lower end of the driving shaft 303 is drivingly connected with the output end of the driving device 304, so that the driving shaft 303 can be driven to rotate by the driving device 304, and then the driving shaft 303 drives the material conveying paddle 301 and the material conveying and pressure reducing paddle 302 to rotate synchronously, thereby realizing the pressure reduction treatment of the thick-phase slurry.

[0052] In a preferred embodiment of the application, the material conveying and pressure reducing paddle 302 of the application comprises a second rotating shaft 3021 and a pressure reducing paddle blade 3022. Wherein, the second rotating shaft 3021 is coaxially arranged with the first rotating shaft 3011, and the upper end of the second rotating shaft 3021 is drivingly connected with the lower end of the first rotating shaft 3011, and the lower end of the second rotating shaft 3021 is drivingly connected with the upper end of the driving shaft 303; the pressure reducing paddle blade 3022 has a spiral ring structure distributed along the height direction of the second rotating shaft 3021, and the two ends of the pressure reducing paddle blade 3022 are fixedly connected with the upper end and the lower end of the second rotating shaft 3021 respectively. It should be noted that the pressure reducing paddle blade 3022 of the application can rotate with the rotation of the second rotating shaft 3021 during operation, and can generate a rotating force acting on the thick-phase slurry, and the spiral ring structure of the pressure reducing paddle blade 3022 can provide downward power for the thick-phase slurry during rotation, thereby promoting the downward conveying of the thick-phase slurry, and thereby realizing the pressure reduction treatment during the conveying process. In addition, since the pressure reducing paddle blade 3022 of the application does not have any hole structure, the material conveying and pressure reducing paddle 302 can realize the sealing effect on the discharging channel 102 when it is in a stationary state during the static separation process, so as to maintain the pressure in the device main body 1 during the separation process.

[0053] Please refer to Figure 3 In a preferred embodiment of the application, the liquid discharging device 2 comprises a liquid discharging pipe 204, a variable-diameter pipeline 202 and a liquid outlet 201 connected in sequence. In some more preferred embodiments of the application, the liquid discharging pipe 204 is in communication with the cavity structure, and the liquid discharging pipe 204 is coaxially arranged with the driving shaft 303.

[0054] In some more preferred embodiments of the application, the lower end of the variable-diameter pipeline 202 has a larger diameter than the upper end of the variable-diameter pipeline 202, so as to realize the fixation of the filter screen.

[0055] In some more preferred embodiments of the application, a filter screen 4 is arranged between the variable-diameter pipeline 202 and the liquid discharging pipe 204, so as to prevent large particles and large solids from entering the variable-diameter pipeline 202 through the filter screen 4, thereby preventing the blockage of the pipeline.

[0056] In some more preferable embodiments of the present application, the diameter of the filter screen holes of the filter screen 4 is <5μm, so as to effectively prevent large particles and solids from entering the variable-diameter pipeline 202.

[0057] In some more preferable embodiments of the present application, a filter screen cleaning brush 8 is arranged in the drain pipe 204, the brush head of the filter screen cleaning brush 8 is in contact with the bottom of the filter screen 4, and a third rotating shaft 7 is arranged at the bottom of the filter screen cleaning brush 8, the third rotating shaft 7 is coaxially and drivingly connected with the driving shaft 303, so that when the driving device 304 drives the driving shaft 303 to rotate, the third rotating shaft 7 can be simultaneously driven to rotate, and the filter screen cleaning brush 8 can rotate with the third rotating shaft 7, so as to realize the sweeping of the filter screen 4, and avoid the blockage of the filter screen 4.

[0058] In a preferable embodiment of the present application, a filter screen support rod 5 is arranged at the bottom of the filter screen 4, the filter screen support rod 5 is used to fix the position of the filter screen 4 in the variable-diameter pipeline 202, and the bottom of the filter screen support rod 5 is fixed on the bottom of the drain pipe 204 by bolts.

[0059] In some more preferable embodiments of the present application, the filter screen support rod 5 is of hollow structure, and the inner diameter of the filter screen support rod 5 is greater than the outer diameter of the filter screen cleaning brush 203, so that the filter screen support rod 5 can fix the position of the filter screen 4 in the drain pipe 204 together with the variable-diameter pipeline 202 above, and meanwhile, the filter screen support rod 5 will not interfere with the driving of the third rotating shaft 7 to rotate the filter screen cleaning brush 8.

[0060] In some more preferable embodiments of the present application, the brush head includes a plurality of brush heads, and the plurality of brush heads are uniformly arranged, so as to improve the cleaning effect of the filter screen cleaning brush 8 on the filter screen 4.

[0061] In some more preferable embodiments of the present application, the feeding port 101 is wedge-shaped and extends into the device body 1, and the insertion length of the feeding port 101 near one end of the drain device 2 is longer than that of the other end, so as to prevent a large amount of solid particles from entering the drain pipe 204 due to disturbance during feeding, and cause the blockage of the drain pipe 204.

[0062] In a preferable embodiment of the present application, the material relaxation hole 3013 includes but is not limited to a round hole and a crack.

[0063] In a preferable embodiment of the present application, a radar material level meter 6 is arranged at the upper end of the device body 1, and is used to detect the height of the dense phase material level in the separation tank.

[0064] In a preferred embodiment of the present application, the alpha-type high-strength gypsum slurry separation device further comprises pressure sensors P1 and P2, which are arranged on the device body 1 to monitor the pressure of the device body 1. In a preferred embodiment of the present application, the driving device 304 is a driving motor.

[0065] In a preferred embodiment of the present application, the driving device 304 is linked with the pressure sensors P1 and P2, respectively, to control the rotating speed of the driving device 304 according to the pressure change of the pressure sensors P1 and P2, so as to control the discharging speed of the material conveying paddle 301 and the material conveying pressure-reducing paddle 302 by controlling the rotating speed of the driving device 304, thereby controlling the pressure in the device body 1. It should be noted that the present application can guide the adjustment of the rotating speed of the driving device 304 according to the pressure at the discharging end, so as to control the rotating speed of the material conveying paddle 301 and the material conveying pressure-reducing paddle 302, and finally control the pressure of the discharged material and the pressure in the device body 1. Since the material conveying pressure-reducing paddle can also play a sealing role when discharging the material, the amount of discharging material can be controlled to prevent the pressure in the main body from decreasing sharply. Since the system needs to maintain the pressure at 0.15Mpa~1.5Mpa, the material can be continuously discharged and the pressure in the main body can be controlled by the material conveying pressure-reducing paddle.

[0066] In a preferred embodiment of the present application, the alpha-type high-strength gypsum slurry separation device further comprises a driving device support 305 for placing the driving device 304.

[0067] In a preferred embodiment of the present application, the alpha-type high-strength gypsum slurry separation device further comprises a device body support for placing the device body 1.

[0068] In a preferred embodiment of the present application, the alpha-type high-strength gypsum slurry separation device further comprises a device body support for placing the device body 1.

[0069] In the description of the embodiments of the present application, it should be noted that, unless otherwise explicitly specified and limited, if the terms "arranged", "mounted", "connected", "linked" appear, they should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, can be electrically connected; can be directly connected, or indirectly connected through an intermediate medium; can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0070] Obviously, the above embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative labor shall fall within the protection scope of the present application.

Claims

1. A high-strength gypsum alpha type slurry separation device, characterized by, The device comprises a device body (1), a liquid discharge device (2) and a material conveying device (3); The device body (1) has a cavity structure inside, which provides a separation space for static separation of the α-type high-strength gypsum slurry, so as to process the α-type high-strength gypsum slurry into a mixed phase with liquid-phase water on the upper layer and thick-phase slurry on the lower layer; The device body (1) is provided with a feeding port (101) at the upper end, which is used for inputting the α-type high-strength gypsum slurry; The device body (1) is provided with a discharging channel (102) at the lower end, which is used for outputting the thick-phase slurry after separation; The liquid discharge device (2) is arranged at the upper end of the device body (1) and communicates with the cavity structure, so as to discharge the liquid components in the cavity structure; The material conveying device (3) comprises a material conveying paddle (301), a material conveying decompression paddle (302), a driving shaft (303) and a driving device (304); The material conveying paddle (301) comprises a first rotating shaft (3011) and a material conveying paddle blade (3012); the first rotating shaft (3011) is vertically arranged at the lower end of the cavity structure, the material conveying paddle blade (3012) has a spiral ring structure distributed along the height direction of the first rotating shaft (3011), and the two ends of the material conveying paddle blade (3012) are fixed to the upper end and the lower end of the first rotating shaft (3011) respectively; the material conveying paddle blade (3012) is uniformly provided with material relaxation holes (3013); The material conveying decompression paddle (302) is located in the discharging channel (102), the material conveying decompression paddle (302) is arranged at the lower end of the first rotating shaft (3011), and the material conveying decompression paddle (302) is coaxially arranged with the first rotating shaft (3011); The upper end of the driving shaft (303) is fixedly connected with the material conveying decompression paddle (302) and coaxially arranged with the material conveying decompression paddle (302); and the lower end of the driving shaft (303) is drivingly connected with the output end of the driving device (304).

2. A high-strength gypsum alpha-type slurry separation device according to claim 1, characterized in that, The material conveying decompression paddle (302) comprises a second rotating shaft (3021) and a decompression paddle blade (3022); The second rotating shaft (3021) is coaxially arranged with the first rotating shaft (3011), the upper end of the second rotating shaft (3021) is drivingly connected with the lower end of the first rotating shaft (3011), and the lower end of the second rotating shaft (3021) is drivingly connected with the upper end of the driving shaft (303); The decompression paddle blade (3022) has a spiral ring structure distributed along the height direction of the second rotating shaft (3021), and the two ends of the decompression paddle blade (3022) are fixed to the upper end and the lower end of the second rotating shaft (3021) respectively.

3. A high-strength gypsum alpha-phase slurry separation apparatus according to claim 1, wherein The liquid discharge device (2) comprises a liquid discharge pipe (204), a variable-diameter pipeline (202) and a liquid outlet (201) connected in sequence; The liquid discharge pipe (204) communicates with the cavity structure, and the liquid discharge pipe (204) is coaxially arranged with the driving shaft (303); The lower end pipe diameter of the variable-diameter pipeline (202) is greater than the upper end pipe diameter of the variable-diameter pipeline (202); A filter screen (4) is arranged between the variable-diameter pipeline (202) and the liquid discharge pipeline (204), the upper end of the filter screen (4) is supported by the variable-diameter pipeline (202), the lower end of the filter screen (4) is supported by a filter screen support rod (5), and the filter screen support rod is connected with the liquid discharge pipeline (204) through a bolt.

4. A high-strength gypsum alpha-phase slurry separation apparatus according to claim 3, wherein The diameter of the filter screen hole on the filter screen (4) is less than 5 microns.

5. A high-strength gypsum alpha-phase slurry separation apparatus according to claim 3, wherein A filter screen cleaning brush (8) is arranged in the liquid discharge pipeline (204), and the brush head of the filter screen cleaning brush (8) is in contact with the bottom of the filter screen (4); A third rotating shaft (7) is further arranged at the bottom of the filter screen cleaning brush (8), the third rotating shaft (7) is coaxially and drivingly connected with the driving shaft (303), so as to drive the filter screen cleaning brush (8) to rotate through the third rotating shaft (7).

6. A high-strength gypsum alpha-settling device as defined in claim 1, wherein, The feeding port (101) is arranged in a wedge shape and extends into the device main body (1), and the insertion length of the feeding port (101) near one end of the liquid discharge device (2) is longer than that of the other end.

7. A high-strength gypsum alpha-phase slurry separation apparatus as claimed in claim 1, characterized by, The material relaxation hole (3013) includes a circular hole and a crack.

8. A high-strength gypsum alpha-phase slurry separation apparatus as claimed in claim 1, characterized by, A radar material level meter (6) is further arranged at the upper end of the device main body (1), and the radar material level meter is interlocked with the driving device (304).

9. A high-strength gypsum alpha-phase slurry separation apparatus as claimed in claim 1, characterized by, The alpha-type high-strength gypsum slurry separation device further comprises pressure sensors P1 and P2 which are arranged in interlock with the driving device (304).

10. A high-strength gypsum alpha-settling device as defined in claim 1, wherein, The driving device (304) is a driving motor.

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