Alpha-type high-strength gypsum slurry separation device

Abstract

The invention belongs to the technical field of solid-liquid separation of high-pressure slurry, and discloses an alpha-type high-strength gypsum slurry separation device. The alpha-type high-strength gypsum slurry separating device comprises a device main body, a liquid discharging device and a material conveying device, a cavity structure is arranged in the device main body, so that alpha-type high-strength gypsum slurry is subjected to standing separation to form a mixed phase of which the upper layer is liquid-phase water and the lower layer is thick-phase slurry; a discharging channel is arranged at the lower end of the device main body and is used for outputting separated thick-phase slurry; the liquid discharging device is arranged at the upper end of the device main body and is communicated with the cavity structure so as to be used for discharging liquid components in the cavity structure. According to the alpha-type high-strength gypsum slurry separation device, the situation that slurry is deposited and blocked in the separation process can be avoided, meanwhile, the pressure in main equipment of the device can be guaranteed, and the separation efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of high-pressure slurry solid-liquid separation, and in particular to an α-type high-strength gypsum slurry separation device. Background Art

[0002] α-type hemihydrate calcium sulfate is also called high-strength building gypsum. After hardening, it has high density and strength, so it is widely used to make high-strength gypsum components and gypsum boards, etc. Therefore, at present, the main way to realize resource utilization of by-product desulfurization gypsum produced by flue gas desulfurization in thermal power plants is to convert it into α-type hemihydrate calcium sulfate.

[0003] However, due to the inherent chlorine-containing components in fuel coal and quicklime used for desulfurization, the chloride ion content in the desulfurized gypsum obtained by wet flue gas desulfurization is often high. In order to promote the resource utilization of desulfurized gypsum, the existing technology currently mainly uses the subcritical hydrothermal method to improve the quality of desulfurized gypsum. However, the product obtained by the subcritical hydrothermal method is α-type high-strength gypsum slurry, and α-type calcium sulfate hemihydrate cannot be directly obtained.

[0004] The prior art generally performs solid-liquid separation on the α-type high-strength gypsum slurry obtained by subcritical hydrothermal treatment to obtain the finished α-type calcium sulfate hemihydrate. However, the separation devices currently used for the solid-liquid separation treatment mainly include a static separation tank, a centrifuge, etc. However, since the α-type hemihydrate gypsum must be operated at a high temperature during the separation process, in order to avoid vaporization during the separation process, it is necessary to maintain high-pressure operation. Some of the existing separation devices cannot maintain high-temperature and high-pressure operation, and deposition and hardening of the α-type hemihydrate gypsum are prone to occur during the separation process. However, the conventional static separation device is neither suitable for the separation of α-type hemihydrate gypsum nor can it be operated continuously. Summary of the invention

[0005] In order to solve the above technical problems and realize the continuous separation of α-hemihydrate gypsum slurry under high temperature and high pressure conditions, the present invention provides an α-type high-strength gypsum slurry separation device, which realizes the continuous separation of α-type hemihydrate gypsum slurry under high temperature and high pressure conditions by arranging a feeding paddle and a feeding pressure reducing paddle, thereby effectively avoiding the deterioration of α-type hemihydrate gypsum and also avoiding the hydration and compaction blockage of α-type hemihydrate gypsum during the separation process.

[0006] The present invention provides an α-type high-strength gypsum slurry separation device. The α-type high-strength gypsum slurry separation device of the present invention comprises a device body, a feeding device and a drainage device. The device body is used to perform static separation on the α-type high-strength gypsum slurry, so that the α-type high-strength gypsum slurry is processed into a mixed phase with an upper layer of liquid phase water and a lower layer of thick phase slurry. The upper layer of liquid phase water is discharged from the device body through the drainage device at the upper end of the device body. The remaining lower layer of thick phase slurry is discharged by reducing the pressure through the feeding device, so that the α-type high-strength gypsum slurry separation device of the present invention can avoid the situation of slurry deposition and blockage during the separation process, and at the same time, it can also ensure the pressure in the device body equipment, improve the separation efficiency, and can also operate online continuously.

[0007] The α-type high-strength gypsum slurry separation device of the present invention is realized by the following technical scheme:

[0008] An α-type high-strength gypsum slurry separation device comprises a device body, a material conveying device and a liquid discharge device.

[0009] It should be noted that the interior of the device body of the present invention has a cavity structure, and the cavity structure provides a separation space for static separation of the solid-liquid 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 water as the upper layer and thick phase slurry as the lower layer.

[0010] In the present invention, a feed port is provided at the upper end of the device body, and the feed port is used to input α-type high-strength gypsum slurry.

[0011] In the present invention, a discharge channel is provided at the lower end of the device body, and the discharge channel is used to output the separated dense phase slurry.

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

[0013] In the present invention, 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 feed paddle of the present invention comprises a first rotating shaft and a feed paddle blade, and the flux of the feed paddle of the present invention is 1.3 to 1.5 times that of the feed pressure reduction paddle.

[0015] Among them, the first rotating shaft is vertically arranged at the lower end of the cavity structure, the feed paddle has a spiral ring structure distributed along the height direction of the first rotating shaft, and the two ends of the feed paddle are respectively fixed to the upper end and the lower end of the first rotating shaft. During operation, the feed paddle can rotate along with the rotation of the first rotating shaft, thereby stirring the thick phase slurry to increase the looseness of the thick phase slurry, thereby preliminarily achieving the pressure reduction treatment of the thick phase slurry. In addition, the feed paddle of the present invention is also evenly distributed with a plurality of material relaxation holes. On the one hand, the plurality of material relaxation holes can enable the feed paddle and the feed pressure reducing paddle to maintain the same conveying flux; on the other hand, it can prevent the feed paddle and the feed pressure reducing paddle from squeezing the material due to the different conveying fluxes, thereby causing the material to compact at the feed paddle.

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

[0017] The upper end of the drive shaft of the present invention is fixedly connected to the feed pressure reducing paddle and is coaxially arranged with the feed pressure reducing paddle; and the lower end of the drive shaft is drivingly connected to the output end of the driving device, so that the drive shaft can be driven to rotate by the driving device, and then the drive shaft drives the feed paddle and the feed pressure reducing paddle to rotate synchronously, thereby achieving pressure reduction treatment of the thick phase slurry.

[0018] In some preferred embodiments of the present invention, the feed decompression paddle of the present invention comprises a second rotating shaft and a decompression paddle. Wherein, the second rotating shaft is coaxially arranged with the first rotating shaft, and the upper end of the second rotating shaft is drivingly connected to the lower end of the first rotating shaft, and the lower end of the second rotating shaft is drivingly connected to 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 respectively fixed to the upper end and the lower end of the second rotating shaft. It should be noted that the decompression paddle of the present invention can rotate with the rotation of the second rotating shaft during operation, and generate a rotational force acting on the dense phase slurry, and the spiral ring structure of the decompression paddle can provide downward power for the dense phase slurry during the rotation process, thereby promoting the downward transportation of the dense phase slurry, and then realizing the decompression treatment during the feeding process. In addition, since no hole structure is set on the decompression paddle of the present invention, the main body of the device is in the static separation process, and the feed decompression paddle can achieve the effect of sealing the discharge channel when it remains in a static state to maintain the pressure in the main body of the device during the separation process.

[0019] In some preferred embodiments of the present invention, the liquid discharge device comprises a liquid discharge pipe, a reducing pipe and a liquid outlet connected in sequence. In some more preferred embodiments of the present invention, the liquid discharge pipe is communicated with the cavity structure, and the liquid discharge pipe is coaxially arranged with the drive shaft.

[0020] In some more preferred embodiments of the present invention, the diameter of the lower end of the variable diameter pipe is larger than the diameter of the upper end of the variable diameter pipe, so as to realize the fixing of the filter screen.

[0021] In some more preferred embodiments of the present invention, a filter screen is provided between the variable diameter pipe and the drain pipe.

[0022] In some other preferred embodiments of the present invention, the diameter of the filter mesh on the filter screen is less than 5 μm, so as to ensure that large particles and large solids can be effectively prevented from entering the variable diameter pipe.

[0023] In some more preferred embodiments of the present invention, a filter cleaning brush is provided in the drainage pipe, the brush head of the filter cleaning brush is in contact with the bottom of the filter, and a third rotating shaft is provided at the bottom of the filter cleaning brush, and the third rotating shaft is coaxially connected to the driving shaft, so that when the driving device drives the driving shaft to rotate, the third rotating shaft can be driven to rotate at the same time, so that the filter cleaning brush can rotate with the rotation of the third rotating shaft, thereby achieving the sweeping of the filter, thereby avoiding the clogging of the filter. In addition, the third rotating shaft can further reduce the space of the drainage pipe, thereby avoiding the amount of solid particles carried by the liquid phase.

[0024] In some preferred embodiments of the present invention, a third support rod is provided at the bottom of the filter screen, and the third support rod is used to fix the position of the filter screen in the variable diameter pipe, and the bottom of the third support rod is fixed to the bottom of the drain pipe by bolts. In some more preferred embodiments of the present invention, the interior of the third support rod is a hollow structure, and the inner diameter of the third support rod is larger than the outer diameter of the filter screen cleaning brush, so that the third support rod can work together with the variable diameter pipe above to fix the position of the filter screen in the drain pipe, and at the same time will not interfere with the third rotating shaft driving the filter screen cleaning brush to rotate.

[0025] In some other preferred embodiments of the present invention, the brush heads include a plurality of brush heads, and the plurality of brush heads are evenly arranged to improve the cleaning effect of the filter cleaning brush on the filter.

[0026] In some more preferred embodiments of the present invention, the feed port is arranged in a wedge shape to extend into the device body, and the insertion length of the feed port at one end close to the discharge device is longer than the insertion length at the other end, so as to prevent a large amount of solid particles from entering the discharge pipe due to disturbance during feeding, causing blockage of the discharge pipe.

[0027] In some preferred embodiments of the present invention, the material relaxation holes include but are not limited to circular holes and cracks.

[0028] In some preferred embodiments of the present invention, a radar level meter is also provided at the upper end of the device body, and the radar level meter is interlocked with the driving device. When the radar level meter detects that the height of the dense phase 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 invention, the α-type high-strength gypsum slurry separation device further includes a pressure sensor interlocked with the drive device. The pressure sensor is arranged on the static separation tank body to monitor the pressure inside the separation tank. When the radar level meter detects that the height of the dense phase material level in the separation tank is normal, but the pressure detected by the pressure sensor becomes low, the rotation speed of the drive device is increased to increase the feeding speed; and when the pressure detected by the pressure sensor is too high, the rotation speed of the drive device is reduced to slow down the feeding speed.

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

[0031] In some preferred embodiments of the present invention, the driving device is interlocked with the pressure sensor respectively to control the rotation speed of the driving device according to the pressure change of the pressure sensor, and then the discharge speed of the feed paddle and the feed pressure reduction paddle is controlled by controlling the rotation speed of the driving device, thereby controlling the pressure inside the device body.

[0032] In some preferred embodiments of the present invention, the α-type high-strength gypsum slurry separation device further includes a driving device support, and the driving device support is used to place the driving device.

[0033] In some preferred embodiments of the present invention, the α-type high-strength gypsum slurry separation device also includes a main body support, and the main body support is used to place the device body.

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

[0035] An α-type high-strength gypsum slurry separation device of the present invention comprises a device body, a feeding device and a drainage device. A feeding port and a drainage device are provided at the upper end of the device body, and a cavity structure is provided inside the device body, so that the α-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 α-type high-strength gypsum slurry into a mixed phase of liquid phase water on the upper layer and thick phase slurry on the lower layer. Among them, the liquid phase water on the upper layer is discharged from the device body through the drainage device on the upper end of the device body. The remaining lower layer of thick phase slurry is driven by the driving device to drive the driving shaft to rotate, so that the driving shaft drives the feeding pressure reducing paddle and the first rotating shaft to rotate synchronously, and the feeding paddle rotates with the rotation of the first rotating shaft, and generates a rotational force acting on the thick phase slurry, so that the thick phase slurry is stirred, and the looseness of the thick phase slurry can be destroyed during the stirring process, thereby preliminarily realizing the 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 the rotation process, thereby promoting the thick phase slurry to be transported downward to the feed pressure reducing paddle below, and the feed pressure reducing paddle rotates to generate a rotational force on the thick phase slurry to stir the thick phase slurry, so as to further increase the looseness of the thick phase slurry, thereby further achieving the pressure reduction treatment of the thick phase slurry. In addition, the feed paddle of the present invention is also evenly distributed with a plurality of material relaxation holes. On the one hand, the plurality of material relaxation holes can enable the feed paddle and the feed pressure reducing paddle to maintain the same conveying flux; on the other hand, it can prevent the feed paddle and the feed pressure reducing paddle from squeezing the material due to the different conveying fluxes, thereby causing the material to compact at the feed paddle.

[0036] The α-type high-strength gypsum slurry separation device of the present invention can avoid the situation where the slurry is deposited and blocked during the separation process, and at the same time can ensure the pressure in the main equipment of the device, improve the separation efficiency, and can also operate online continuously.

[0037] The present invention avoids the problem of slurry sedimentation and clogging during the separation process by arranging feeding paddles, pressure-reducing feeding paddles and material relaxation units in the device body, thereby improving the separation efficiency.

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

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

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

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

[0042] Description of reference numerals:

[0043] 1. Device body; 101. Feed inlet; 102. Radar level meter; 103. Discharge channel; 2. Drain device; 201. Discharge outlet; 202. Variable diameter pipe; 203. Filter; 204. Drain pipe; 3. Feed device; 301. Feed paddle; 3011. First rotating shaft; 3012. Feed paddle; 3013. Material relaxation hole; 302. Feed pressure relief paddle; 3021. Second rotating shaft; 3022. Feed pressure relief paddle; 303. Drive shaft; 304. Drive motor; 305. Motor support base; 4. Pressure detection device; 5. Filter support rod; 6. Bolt; 7. Third rotating shaft; 8. Filter cleaning brush. DETAILED DESCRIPTION

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

[0045] Example 1

[0046] See also Figure 1 This embodiment provides an α-type high-strength gypsum slurry separation device, including a device body 1, a drainage device 2 and a feeding device 3.

[0047] It should be noted that, in this embodiment, the interior of the device body 1 has a cavity structure, and the cavity structure provides a separation space for the solid-liquid separation of the α-type high-strength gypsum slurry. A feed port 101 is provided at the upper end of the device body 1, and the α-type high-strength gypsum slurry is input into the cavity structure inside the device body 1 through the feed port 101, and then statically separated in the cavity structure, so that the α-type high-strength gypsum slurry is processed into a mixed phase with liquid phase water on the upper layer and thick phase slurry on the lower layer. A discharge channel 103 is provided at the lower end of the device body 1, and the discharge channel 103 is used to output the separated thick phase slurry.

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

[0049] See also Figure 1 In this embodiment, the feeding device 3 includes a feeding paddle 301, a feeding pressure reducing paddle 302, a driving shaft 303 and a driving device 304. The feeding paddle 301 includes a first rotating shaft 3011 and a feeding paddle 3012; the first rotating shaft 3011 is vertically arranged at the lower end of the cavity structure, the feeding paddle 3012 has a spiral ring structure distributed along the height direction of the first rotating shaft 3011, and the two ends of the feeding paddle 3012 are respectively fixed to the upper end and the lower end of the first rotating shaft 3011. During operation, the feeding paddle 3012 can rotate with the rotation of the first rotating shaft 3011, and generate a rotational force acting on the thick phase slurry, so that the thick phase slurry is stirred, and the looseness of the thick phase slurry can be destroyed during the stirring process, thereby preliminarily realizing the 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 the rotation process, thereby promoting the downward transportation of the thick phase slurry. In addition, a plurality of material relaxation holes 3013 are evenly distributed on the feed paddle 3012 of the present invention. On the one hand, the plurality of material relaxation holes 3013 can enable the feed paddle 301 and the feed pressure reducing paddle 302 to maintain the same conveying flux; on the other hand, they can prevent the feed paddle 301 and the feed pressure reducing paddle 302 from squeezing the material due to the different conveying fluxes, thereby preventing the material from being compacted at the feed paddle 301.

[0050] The feed pressure reducing paddle 302 is located in the discharge channel 103, and the feed pressure reducing paddle 302 is arranged at the lower end of the first rotating shaft 3011, and the feed pressure reducing paddle 302 is arranged coaxially with the first rotating shaft 3011. The feed pressure reducing paddle 302 is located at the discharge channel 103, and during operation, the thick phase slurry generated after static separation inside the device body 1 can be discharged through the discharge channel 103 by the rotational force generated by the rotation. At the same time, the rotational force generated by the feed pressure reducing paddle 302 can stir the thick phase slurry to further increase the looseness of the thick phase slurry, thereby further realizing the pressure reduction treatment of the thick phase slurry.

[0051] The upper end of the driving shaft 303 of the present invention is fixedly connected to the feeding pressure reducing paddle 302 and is coaxially arranged with the feeding pressure reducing paddle 302; and the lower end of the driving shaft 303 is drivingly connected to 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 feeding paddle 301 and the feeding pressure reducing paddle 302 to rotate synchronously, thereby realizing the pressure reduction treatment of the dense phase slurry.

[0052] In a preferred embodiment of the present invention, the feed pressure reducing paddle 302 of the present invention comprises a second rotating shaft 3021 and a pressure reducing paddle 3022. 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 to the lower end of the first rotating shaft 3011, and the lower end of the second rotating shaft 3021 is drivingly connected to the upper end of the driving shaft 303; the pressure reducing paddle 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 3022 are respectively fixed to the upper end and the lower end of the second rotating shaft 3021. It should be noted that the decompression blade 3022 of the present invention can rotate with the rotation of the second rotating shaft 3021 during operation, and generate a rotational force acting on the dense phase slurry. Moreover, the spiral ring structure of the decompression blade 3022 can provide downward power for the dense phase slurry during rotation, thereby promoting the downward transportation of the dense phase slurry, thereby achieving pressure reduction treatment during the feeding process. In addition, since no hole structure is provided on the decompression blade 3022 of the present invention, during the static separation process of the device body 1, the feeding decompression paddle 302 can achieve a sealing effect on the discharge channel 103 when maintaining a static state, so as to maintain the pressure in the device body 1 during the separation process.

[0053] See also Figure 3 In a preferred embodiment of the present invention, the liquid discharge device 2 comprises a liquid discharge pipe 204, a reducing pipe 202 and a liquid outlet 201 connected in sequence. In some more preferred embodiments of the present invention, the liquid discharge pipe 204 is communicated with the cavity structure, and the liquid discharge pipe 204 is coaxially arranged with the driving shaft 303.

[0054] In some more preferred embodiments of the present invention, the diameter of the lower end of the variable diameter pipe 202 is larger than the diameter of the upper end of the variable diameter pipe 202 to achieve a fixed filter screen.

[0055] In some more preferred embodiments of the present invention, a filter screen 203 is provided between the variable diameter pipe 202 and the drain pipe 204 to prevent large particles and large solids from entering the variable diameter pipe 202 through the filter screen 203 and causing pipe blockage.

[0056] In some other preferred embodiments of the present invention, the diameter of the filter mesh holes on the filter mesh 203 is less than 5 μm, so as to effectively prevent large particles and large solids from entering the variable diameter pipe 202.

[0057] In some more preferred embodiments of the present invention, a filter cleaning brush 8 is provided in the drain pipe 204, the brush head of the filter cleaning brush 8 contacts the bottom of the filter, and a third rotating shaft 7 is provided at the bottom of the filter cleaning brush 8, and the third rotating shaft 7 is coaxially 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 driven to rotate at the same time, and the filter cleaning brush 203 can rotate with the rotation of the third rotating shaft 7, so as to realize the sweeping of the filter 203, and thus avoid the blockage of the filter 203. Road.

[0058] In a preferred embodiment of the present invention, a filter support rod 5 is provided at the bottom of the filter screen 203, and the filter support rod 5 is used to fix the position of the filter screen 203 in the variable diameter pipe 202, and the bottom of the filter support rod 5 is fixed to the bottom of the drain pipe 204 by a bolt 6.

[0059] In some more preferred embodiments of the present invention, the interior of the filter support rod 5 is a hollow structure, and the inner diameter of the filter support rod 5 is larger than the outer diameter of the filter cleaning brush 203, so that the filter support rod 5 can work together with the variable diameter pipe 204 above to fix the position of the filter 203 in the drain pipe 204, while not interfering with the third rotating shaft 7 driving the filter cleaning brush 8 to rotate.

[0060] In some other preferred embodiments of the present invention, the brush heads include a plurality of brush heads, and the plurality of brush heads are evenly arranged to improve the cleaning effect of the filter cleaning brush 8 on the filter 203 .

[0061] In some more preferred embodiments of the present invention, the feed port 101 is arranged in a wedge shape to extend into the device body 1, and the insertion length of the feed port 101 at one end close to the discharge device 2 is longer than the insertion length at the other end, so as to prevent a large amount of solid particles from entering the discharge pipe 204 due to disturbance during feeding, causing the discharge pipe 204 to be blocked.

[0062] In a preferred embodiment of the present invention, the material relaxation hole 3013 includes but is not limited to a circular hole and a crack.

[0063] In a preferred embodiment of the present invention, a radar level meter 102 is further provided at the upper end of the device body 1 for detecting the height of the dense phase level in the separation tank.

[0064] In a preferred embodiment of the present invention, the α-type high-strength gypsum slurry separation device further comprises a pressure sensor 4. The pressure sensor 4 is arranged on the device body 1 to monitor the pressure of the device body 1. In a preferred embodiment of the present invention, the driving device 304 is a driving motor.

[0065] In a preferred embodiment of the present invention, the driving device 304 is interlocked with the pressure sensor 4 to control the rotation speed of the driving device 304 according to the pressure change of the pressure sensor 4, and then the discharge speed of the feed paddle 301 and the feed pressure reduction paddle is controlled by controlling the rotation speed of the driving device 304, so as to control the pressure in the device body 1. It should be noted that the present invention can guide and adjust the rotation speed of the driving device 304 output according to the pressure at the discharge end, so as to control the rotation speed of the feed paddle 301 and the feed pressure reduction paddle 302, and finally control the pressure of the discharged material and the pressure in the device body 1. Since the feed pressure reduction can also play a sealing role when discharging, the pressure in the body can be prevented from decreasing sharply by controlling the amount of discharge. Since the system needs to ensure that the pressure is maintained at 0.15Mpa to 1.5Mpa, the feed pressure reduction paddle can be used to achieve both continuous discharge of materials and pressure of the body.

[0066] In a preferred embodiment of the present invention, the α-type high-strength gypsum slurry separation device further includes a driving device support 305 , and the driving device support 305 is used to place the driving device 304 .

[0067] In a preferred embodiment of the present invention, the α-type high-strength gypsum slurry separation device further includes a main body support, and the main body support is used to place the device body 1.

[0068] In a preferred embodiment of the present invention, the α-type high-strength gypsum slurry separation device further includes a main body support, and the main body support is used to place the device body 1.

[0069] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it 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 it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0070] Obviously, the above embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Claims

1. An α-type high-strength gypsum slurry separation device, characterized in that: It 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, and the cavity structure provides a separation space for solid-liquid separation of α-type high-strength gypsum slurry for static separation, so as to process the α-type high-strength gypsum slurry into a mixed phase with an upper layer of liquid phase water and a lower layer of thick phase slurry; The upper end of the device body (1) is provided with a feed port (101), and the feed port (101) is used to input α-type high-strength gypsum slurry; A discharge channel (103) is provided at the lower end of the device body (1), and the discharge channel (103) is used to discharge the separated dense phase slurry; The liquid discharge device (2) is arranged at the upper end of the device body (1) and is communicated 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 pressure reducing paddle (302), a driving shaft (303) and a driving device (304); The feeding paddle (301) comprises a first rotating shaft (3011) and a feeding paddle (3012); the first rotating shaft (3011) is vertically arranged at the lower end of the cavity structure, the feeding paddle (3012) has a spiral ring structure distributed along the height direction of the first rotating shaft (3011), and the two ends of the feeding paddle (3012) are respectively fixed to the upper end and the lower end of the first rotating shaft (3011); the feeding paddle (3012) is evenly distributed with material relaxation holes (3013); The material feeding pressure reducing paddle (302) is located in the material discharging channel (103), the material feeding pressure reducing paddle (302) is arranged at the lower end of the first rotating shaft (3011), and the material feeding pressure reducing paddle (302) is arranged coaxially with the support rod; The upper end of the driving shaft (303) is fixedly connected to the feeding and decompression paddle (302) and is coaxially arranged with the feeding and decompression paddle (302); and the lower end of the driving shaft (303) is drivingly connected to the output end of the driving device (304).

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

3. The α-type high-strength gypsum slurry separation device according to claim 1, characterized in that: The liquid discharge device (2) comprises a liquid discharge pipe (204), a diameter-changing pipe (202) and a liquid outlet (201) which are connected in sequence; The liquid discharge pipe (201) is in communication with the cavity structure, and the liquid discharge pipe (201) is coaxially arranged with the drive shaft (303); The diameter of the lower end of the variable diameter pipeline (202) is greater than the diameter of the upper end of the variable diameter pipeline (202); A filter screen (203) is provided between the variable diameter pipe (202) and the liquid discharge pipe (201). The upper end of the filter screen (203) is supported by the variable diameter pipe (202), and the lower end is supported by a filter screen support rod (5), and the filter screen support rod is connected to the liquid discharge pipe (204) by a bolt (6).

4. The α-type high-strength gypsum slurry separation device according to claim 3, characterized in that: The diameter of the filter mesh holes on the filter mesh (204) is less than 5 μm.

5. The α-type high-strength gypsum slurry separation device according to claim 3, characterized in that: A filter screen cleaning brush (8) is arranged in the liquid discharge pipe (201), and a brush head on the filter screen cleaning brush (8) is in contact with the bottom of the filter screen (204); A third rotating shaft (7) is also provided at the bottom of the filter cleaning brush (8), and the third rotating shaft (7) is coaxially drivingly connected to the driving shaft (303) so as to drive the filter cleaning brush (8) to rotate via the third rotating shaft (7).

6. The α-type high-strength gypsum slurry separation device according to claim 1, characterized in that: The feed port (101) is arranged in a wedge shape and extends into the device body (1), and the insertion length of the feed port (101) at one end close to the liquid discharge device (2) is longer than the insertion length at the other end.

7. The α-type high-strength gypsum slurry separation device according to claim 1, characterized in that: The material relaxation holes (3013) include but are not limited to circular holes and cracks.

8. The α-type high-strength gypsum slurry separation device according to claim 1, characterized in that: A radar level meter (102) is also provided at the upper end of the device body (1), and the radar level meter (102) is interlocked with the driving device (304).

9. The α-type high-strength gypsum slurry separation device according to claim 1, characterized in that: The α-type high-strength gypsum slurry separation device also includes a pressure sensor (4) interlocked with the driving device (304).

10. The α-type high-strength gypsum slurry separation device according to claim 1, characterized in that: The driving device (304) is a driving motor.

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