A magnesium sulfate solid-liquid mixture separation device

Abstract

This invention relates to the field of crystallization separation devices and discloses a magnesium sulfate solid-liquid mixture separation device, including a packaging box. A power component is connected to the top of the packaging box, and the output end of the power component is driven to a filter cylinder located inside the packaging box. An auxiliary component is connected inside the filter cylinder, and a vibration component located at the bottom of the packaging box is connected to the bottom of the auxiliary component. A return pipe connected to the packaging box is provided at the bottom of the vibration component. A discharge mechanism is also provided inside the packaging box. This invention reduces the adhesion and accumulation of magnesium sulfate crystals on the filter wall, improves the separation efficiency and quality of magnesium sulfate solid-liquid mixtures, reduces equipment maintenance costs, promotes rapid crystal shedding and separation, and helps improve separation efficiency.

Description

Technical Field

[0001] This invention relates to the field of crystallization separation apparatus, and more particularly to a magnesium sulfate solid-liquid mixture separation apparatus. Background Technology

[0002] Currently, in the production and processing of magnesium sulfate, centrifugal separation equipment is typically used for crystallization and solid-liquid separation of the magnesium sulfate solid-liquid mixture. In existing centrifugal separation devices, magnesium sulfate crystals easily adhere to the inner wall of the filter components during operation. As operating time increases, the deposited layer gradually thickens, not only reducing filtration efficiency but also potentially causing equipment blockage and affecting production continuity. Frequent shutdowns for manual cleaning are required, increasing labor intensity and production costs. Therefore, there is an urgent need for a magnesium sulfate solid-liquid mixture separation device that can effectively prevent crystal adhesion and improve separation efficiency. Summary of the Invention

[0003] To address the technical problem of easy crystal adhesion, this invention provides a magnesium sulfate solid-liquid mixture separation device.

[0004] The present invention is achieved by the following technical solution: a magnesium sulfate solid-liquid mixture separation device, including a packaging box, a power component connected to the top of the packaging box, and a filter cylinder located inside the packaging box through a drive connection at the output end of the power component, and an auxiliary component connected inside the filter cylinder, a vibration component located at the bottom of the packaging box connected to the bottom of the auxiliary component, and a return pipe connected to the packaging box at the bottom of the vibration component, and a discharge machine is also provided inside the packaging box. The filter cylinder is driven to rotate by the power component for centrifugal separation, and the auxiliary component scrapes the inner wall of the filter cylinder. The disturbance generated by the vibration component allows the crystals to quickly fall off the filter cylinder wall.

[0005] As a further improvement to the above solution, the power assembly includes a return pipe rotatably connected to the top of the packaging box. A gear is fixedly connected to the outside of the return pipe, and a transmission pipe is slidably connected to the bottom of the return pipe via a spline seal. A transmission assembly for connecting to the filter cartridge is connected to the transmission pipe, and the bottom end of the transmission pipe is connected to an auxiliary assembly. Power input is achieved through the cooperation of the gear and the return pipe. At the same time, the structure of the spline seal sliding sleeve allows the transmission pipe to move axially while rotating, providing a structural basis for subsequent vibration lifting.

[0006] As a further improvement to the above solution, the transmission assembly includes a stabilizing box. A spring connected to the upper side of the stabilizing box and the encapsulation box is connected to the upper side. A transmission tube passes through the stabilizing box and extends into the filter cartridge. A bevel gear one is sleeved on the outer side of the transmission tube. The bevel gear one is meshed with a gear set that is rotatably connected to the stabilizing box. The other end of the gear set is driven by a bevel gear two that is fixedly connected to the filter cartridge. Through the meshing transmission of the bevel gear one and the gear set, the stability of power transmission is ensured. At the same time, the stabilizing box, in conjunction with the spring structure, can buffer the vibration during the transmission process and protect the transmission components.

[0007] As a further improvement to the above solution, the auxiliary component operation includes a vertical shaft, with multiple drive rings fixedly sleeved on the outside of the vertical shaft. A follower tube is fixedly connected to the outside of the drive rings, and a cleaning block that contacts the inner wall of the filter cylinder is fixedly connected to the other end of the follower tube. The bottom of the vertical shaft is connected to the vibration component. Through the contact between the cleaning block and the inner wall of the filter cylinder, the crystals attached to the inner wall are scraped off during the rotation process, preventing the crystals from accumulating and clogging the filter holes.

[0008] As a further improvement to the above solution, the drive ring and the cleaning block are hollow, and a through hole connected to the drive ring is provided on the vertical axis. Multiple overflow holes are provided on one side of the cleaning block. Through the hollow design and overflow holes, the cleaning block can spray fluid to flush the inner wall of the filter cartridge while scraping the coating, thereby improving the efficiency of crystal shedding.

[0009] As a further improvement to the above solution, the vibration assembly includes a support ring rotatably connected to the filter cylinder, a buffer column rotatably connected to one side of the support ring, and the other end of the buffer column rotatably connected to the packaging box. A lifting column is also rotatably connected to the bottom of the filter cylinder. A filter tube that is slidably sleeved with the lifting column is fixedly connected to the bottom of the vertical shaft. The filter tube is rotatably connected to the discharge mechanism. Through the cooperation of the lifting column, the support ring, and the buffer column, they move up and down synchronously during the rotation of the filter cylinder, forming vibration and accelerating the separation of crystals and liquid.

[0010] As a further improvement to the above solution, the discharge mechanism includes a bottom box fixedly connected to the packaging box. A partition plate is fixedly connected to the middle of the bottom box, dividing the bottom box into upper and lower spaces. A series pipe is also fixedly connected to the partition plate, passing through the two spaces of the bottom box. A secondary discharge pipe extending to the outside of the packaging box is also fixedly connected to the partition plate. Multiple main discharge pipes are also connected to the bottom of the filter cylinder. A collection ring rotatably connected to the bottom of the main discharge pipe is connected to the bottom of the filter cylinder. A discharge pipe extending to the outside of the main discharge pipe is connected to the bottom of the collection ring. Through the setting of the partition plate and the series pipe, the collection and discharge of the separated liquid and solid are realized, improving the collection efficiency.

[0011] As a further improvement to the above solution, multiple drive blocks are fixedly connected to the outside of the lifting column. One side of the drive block contacts a rotating ring, and one side of the rotating ring is fixedly connected to an auxiliary shaft extending to the bottom box. The auxiliary shaft is rotatably connected to the bottom box. Through the contact and cooperation between the drive block and the rotating ring, the up and down movement of the lifting column generates vibration.

[0012] As a further improvement to the above solution, the filter cartridge is provided with multiple overflow holes, and the outer side of the filter tube has a sliding expansion sleeve. The bottom of the expansion sleeve is provided with a receiving sleeve connected to the return pipe. Through the cooperation of the expansion sleeve and the receiving sleeve, the filtration area can be adjusted to meet the separation requirements of different batches, while ensuring the smooth return of the separated liquid.

[0013] As a further improvement to the above scheme, an installation sleeve is also fitted on the outside of the follower tube, and multiple crystallization cones are fixedly connected to the installation sleeve. By setting the crystallization cones, the number of crystallization points is increased.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention, by setting an auxiliary component inside the filter cylinder, uses a cleaning block to continuously stir and scrape the inner wall of the filter cylinder, reducing the adhesion and accumulation of magnesium sulfate crystals on the filter wall; the hollow cleaning block, together with the overflow hole, achieves a dual cleaning effect of scraping and rinsing, improving the separation efficiency and quality of magnesium sulfate solid-liquid mixtures, and reducing equipment maintenance costs.

[0015] 2. Combined with the vibration component at the bottom, the lifting column and other components cause the filter cartridge to generate high-frequency axial disturbance during the centrifugal rotation process. This disturbance can break the adhesion between the crystals and the filter screen, promote the rapid shedding of the crystals and complete the separation, and help improve the separation efficiency. Attached Figure Description

[0016] Figure 1 This is an overall structural diagram of the present invention; Figure 2 This is a schematic front sectional view of the present invention; Figure 3 This is a partial structural diagram of the present invention; Figure 4 This is a partial front sectional view of the present invention.

[0017] Explanation of key symbols: 01. Packaging box; 02. Gear; 03. Return pipe II; 04. Support column; 05. Bottom box; 06. Transmission pipe; 07. Filter cartridge; 08. Cleaning block; 09. Follower pipe; 11. Support ring; 12. Buffer column; 13. Drive block; 14. Lifting column; 15. Series pipe; 16. Extension sleeve; 17. Filter pipe; 18. Return pipe I; 19. Receiving sleeve; 20. Divider plate; 21. Auxiliary shaft; 22. Drive ring; 23. Vertical shaft; 24. Stabilizer box; 26. Gear set; 27. Bevel gear I; 28. Bevel gear II; 29. ​​Secondary discharge pipe; 30. Collection ring; 31. Main discharge pipe; 32. Discharge pipe; 33. Crystallization cone; 34. Mounting sleeve. Detailed Implementation

[0018] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0019] Example 1: Please refer to Figure 1-4 , This embodiment provides a magnesium sulfate solid-liquid mixture separation device, including a sealing box 01. The sealing box 01 serves as the main support structure of the entire device, and a sealed space is formed inside it to accommodate the separation components, so as to prevent solids from forming during the separation process.

[0020] A power unit is connected to the top of the packaging box 01. This power unit serves as the core drive source of the device, with its output extending downwards into the packaging box 01 and connected to a filter cylinder 07. Specifically, the filter cylinder 07 is suspended inside the packaging box 01, and its wall has several filter holes. These holes are used to use centrifugal force to eject the magnesium sulfate solution during high-speed rotation, while solid crystals are retained inside the cylinder. The power unit drives the filter cylinder 07 to rotate, providing the necessary power input for the centrifugal separation process. Multiple support columns 04 are connected to the bottom of the packaging box 01 to support and elevate it.

[0021] An auxiliary component is connected inside the filter cartridge 07, and a vibration component located at the bottom of the auxiliary component is connected to the bottom of the packaging box 01. The auxiliary component, positioned inside the filter cartridge 07, intervenes in the inner wall of the filter cartridge 07 during the separation process. Through scraping, stirring, and other methods, it prevents the crystalline material from adhering firmly to the cartridge wall due to inertia and viscosity, thus ensuring the unobstructed flow of the filter pores. The vibration component, linked to the auxiliary component and located at the bottom of the packaging box 01, generates mechanical vibration. This vibration is transmitted to the filter cartridge 07 and the auxiliary component, applying axial disturbance to the ongoing centrifugal separation process, disrupting the adhesion between the crystals and the filter screen, and promoting faster detachment of the solid-liquid mixture.

[0022] The bottom of the vibration assembly is equipped with a return pipe 18 connected to the encapsulation box 01. The return pipe 18 guides the separated liquid or the medium that needs to be returned back into the system or discharges it. The encapsulation box 01 is also equipped with a discharge mechanism, which is located at the bottom of the device and is used to orderly discharge the solid crystals after separation from the inside of the device to achieve continuous production operation.

[0023] This embodiment provides a stable installation reference through the encapsulation box 01. The top-mounted power component and the bottom-mounted vibration component complement each other spatially, providing rotational force and vibration force respectively. The two work together to act on the material inside the filter cartridge 07. The auxiliary component, as an intermediate actuator, acts directly on the material layer. Combined with the disturbance of the vibration component, it solves the problem of insufficient capacity of traditional single centrifuge equipment for handling viscous crystals, and improves the separation efficiency and quality of magnesium sulfate solid-liquid mixtures.

[0024] Example 2: Please refer to Figure 1-4 , The power assembly includes a return pipe 2 03 rotatably connected to the top of the packaging box 01, with a gear 02 fixedly connected to the outside of the return pipe 2 03. The gear 02, acting as an external power receiver, can be driven by a motor or other drive source to rotate the return pipe 2 03. A transmission pipe 06 is slidably sleeved at the bottom of the return pipe 2 03 via a spline seal, and a transmission assembly for connecting to the filter cartridge 07 is connected to the transmission pipe 06. The bottom end of the transmission pipe 06 is connected to an auxiliary assembly.

[0025] The return pipe 2 03 and the transmission pipe 06 transmit torque through a spline connection, allowing the transmission pipe 06 to rotate synchronously with the return pipe 2 03, thereby driving the transmission assembly to rotate. The transmission pipe 06 can move up and down a certain distance relative to the return pipe 2 03 in the axial direction, and the sealing design ensures the airtightness of the connection.

[0026] The transmission assembly includes a stabilizing box 24, with a spring connected to the upper side of the stabilizing box 24 and connected to the encapsulation box 01. A transmission tube 06 passes through the stabilizing box 24 and extends into the filter cartridge 07. A bevel gear 27 is sleeved on the outer side of the transmission tube 06. The bevel gear 27 is meshed with a gear set 26 that is rotatably connected to the stabilizing box 24. The other end of the gear set 26 is driven by a bevel gear 28 that is fixedly connected to the filter cartridge 07.

[0027] In this transmission structure, the transmission tube 06 serves as the drive shaft, and its rotational motion is transmitted to the gear set 26 via the bevel gear 27, which in turn drives the filter cartridge 07 to rotate. The stabilizing box 24 not only provides a mounting base for the gear set 26 but is also suspended from the encapsulation box 01 by a spring connected to its upper side. When the filter cartridge 07 and the transmission tube 06 experience axial vibration, the spring can undergo elastic deformation, allowing the stabilizing box 24 and the internal gear assembly to move accordingly, thereby buffering the impact of vibration on the top drive structure and ensuring the stability and lifespan of the transmission system.

[0028] Example 3: Please refer to Figure 1-4 , The auxiliary component includes a vertical shaft 23, with multiple drive rings 22 fixedly sleeved on the outer side of the vertical shaft 23. A follower tube 09 is fixedly connected to the outer side of each drive ring 22, and a cleaning block 08, which contacts the inner wall of the filter cylinder 07, is fixedly connected to the other end of the follower tube 09. The bottom of the vertical shaft 23 is connected to a vibration component. The vertical shaft 23 serves as the core support shaft of the auxiliary component; its rotation drives the follower tube 09 and the cleaning block 08 to rotate. The drive rings 22 act as radial extensions, supporting the follower tube 09 on the periphery of the vertical shaft 23, forming a cantilever structure, while ensuring rotation between the vertical shaft 23 and the follower tube 09. The cleaning block 08, as a component directly acting on the material, is made of a metal alloy with a certain degree of elasticity and wear resistance to ensure that it can effectively remove crystals without excessively damaging the filter screen during long-term friction and scraping against the inner wall of the filter cylinder 07. During operation, the vertical shaft 23 rotates with the transmission tube 06, driving the cleaning block 08 to move circumferentially along the inner wall of the filter cylinder 07, continuously scraping away the magnesium sulfate crystals attached to the surface of the filter screen, preventing the crystal layer from becoming too thick, which would cause a decrease in centrifugal force or blockage of the filter holes. Furthermore, through the transmission in Example 2, the rotation direction of the filter cylinder 07 is opposite to the rotation direction of the cleaning block 08.

[0029] The drive ring 22 and the cleaning block 08 are hollow. The vertical shaft 23 is provided with a through hole that communicates with the drive ring 22. The cleaning block 08 is provided with multiple overflow holes on one side.

[0030] The return pipe 18 and return pipe 203 are connected in series via an external hose, or the cleaning solution or mixed solution is pumped through an existing external pump into the vertical shaft 23 via return pipe 203. The fluid then enters the hollow cavity of the drive ring 22 through a through hole on the vertical shaft 23, flows into the follower pipe 09, and finally reaches the cleaning block 08. While the cleaning block 08 rotates and scrapes, the fluid is ejected at high pressure from the overflow hole on its side wall, directly impacting the inner wall of the filter cartridge 07. Combined with mechanical scraping, this improves the anti-clogging effect and ensures a continuous and stable supply of raw materials, guaranteeing efficient crystallization separation.

[0031] The vibration assembly includes a support ring 11 rotatably connected to the filter cylinder 07. A buffer column 12 is rotatably connected to one side of the support ring 11, and the other end of the buffer column 12 is rotatably connected to the packaging box 01. A lifting column 14 is also rotatably connected to the bottom of the filter cylinder 07. A filter tube 17, which is slidably sleeved with the lifting column 14, is fixedly connected to the bottom of the vertical shaft 23. The filter tube 17 is rotatably connected to the discharge mechanism. The support ring 11 provides rotational support for the bottom of the filter cylinder 07, while the buffer column 12 connects the packaging box 01 and the support ring 11. Its rotatable connection allows the support ring 11 to swing or shift in space. The lifting column 14 is located at the bottom of the filter cylinder 07.

[0032] Example 4: Please refer to Figure 1-4 , The discharge mechanism includes a bottom box 05 fixedly connected to the packaging box 01. A partition plate 20 is fixedly connected in the middle of the bottom box 05, dividing the bottom box 05 into upper and lower spaces. The partition plate 20 serves to isolate the space and can divert the different phases of the separated materials. A series pipe 15 is also fixedly connected to the partition plate 20, which runs through the two spaces of the bottom box 05. At the same time, a secondary discharge pipe 29 extending to the outside of the packaging box 01 is also fixedly connected to the partition plate 20 to assist in discharging the crystallized solution.

[0033] For the separated solid material, the bottom of the filter cylinder 07 is connected to multiple main discharge pipes 31. The bottom of each main discharge pipe 31 is connected to a collecting ring 30 that is rotatably connected to the filter cylinder 07. The bottom of the collecting ring 30 is connected to a discharge pipe 32 that extends to the outside of the main discharge pipes 31. It should be understood that during the high-speed rotation and separation process of the filter cylinder 07, the settled solids fall into the collecting ring 30 through the main discharge pipes 31. Because the collecting ring 30 is rotatably connected to the filter cylinder 07, and the discharge pipe 32 extends to the outside of the main discharge pipe 31 and connects to external collection equipment, this dynamic connection structure ensures that the solid material can be stably and continuously discharged outside the device under the condition of continuous rotation and vibration of the filter cylinder 07, achieving continuous discharge without stopping the machine and significantly improving production efficiency.

[0034] Multiple drive blocks 13 are fixedly connected to the outer side of the lifting column 14. One side of each drive block 13 contacts a rotating ring, and one side of the rotating ring is fixedly connected to an auxiliary shaft 21 extending to the bottom box 05. The auxiliary shaft 21 is rotatably connected to the bottom box 05. When the filter cartridge 07 needs to be agitated, the auxiliary shaft 21 is connected to an existing external power device. The power device can output torque, thereby driving the auxiliary shaft 21 to rotate. The auxiliary shaft 21 further drives the rotating ring to rotate, thereby contacting the drive blocks 13 at different heights along the axial direction of the lifting column 14. This forces the lifting column 14 to move axially, further driving the filter cartridge 07 to move up and down. The gap between the highest drive block 13 and the lowest drive block 13 is relatively large, so the rotating ring cannot continuously contact the corresponding drive block 13. At this time, the filter cartridge 07 descends instantaneously, generating inertial force. After the filter cartridge 07 drives the lifting column 14 to the lowest position, the lowest drive block 13 contacts the rotating ring, and a second cycle begins.

[0035] The filter cartridge 07 is provided with multiple overflow holes. The outer side of the filter tube 17 has a sliding expansion sleeve 16, and the bottom of the expansion sleeve 16 is provided with a receiving sleeve 19 connected to the return pipe 18. The expansion sleeve 16 is fitted on the outside of the filter tube 17 and can slide axially. During operation, it can disturb the bottom space and prevent the accumulation of solids.

[0036] Example 5: Please combine Figure 1-4 , An installation sleeve 34 is also sleeved on the outside of the follower tube 09, and multiple crystallization cones 33 are fixedly connected to the installation sleeve 34.

[0037] The mounting sleeve 34 serves as a connecting carrier, fitting onto the outer wall of the follower tube 09 and securing it with an interference fit for easy disassembly and replacement after wear. Crystallization cones 33 are fixedly connected to the outer circumferential surface of the mounting sleeve 34 and are arranged in an array along the axial and circumferential directions of the follower tube 09. The crystallization cones 33 are preferably sharp conical or pyramidal structures, typically made of high-strength wear-resistant alloys or ceramic materials. The crystallization cones 33 increase the number of crystallization source points, thereby promoting crystallization and achieving faster solid-liquid separation.

[0038] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A magnesium sulfate solid-liquid mixture separation device, characterized in that, The package includes a packaging box (01), a power component is connected to the top of the packaging box (01), and the output end of the power component is connected to a filter cylinder (07) located inside the packaging box (01). An auxiliary component is connected inside the filter cylinder (07), and a vibration component located at the bottom of the packaging box (01) is connected to the bottom of the auxiliary component. A return pipe (18) connected to the packaging box (01) is provided at the bottom of the vibration component. A discharge mechanism is also provided inside the packaging box (01).

2. The magnesium sulfate solid-liquid mixture separation device as described in claim 1, characterized in that, The power assembly includes a return pipe two (03) rotatably connected to the top of the packaging box (01). A gear (02) is fixedly connected to the outside of the return pipe two (03). A transmission pipe (06) is slidably sleeved at the bottom of the return pipe two (03) through a spline seal. A transmission assembly for connecting to the filter cartridge (07) is connected to the transmission pipe (06). The bottom end of the transmission pipe (06) is connected to an auxiliary assembly.

3. The magnesium sulfate solid-liquid mixture separation device as described in claim 2, characterized in that, The transmission assembly includes a stabilizing box (24), with a spring connected to the upper side of the stabilizing box (24) and connected to the encapsulation box (01). The transmission tube (06) passes through the stabilizing box (24) and extends into the filter cartridge (07). A bevel gear (27) is sleeved on the outer side of the transmission tube (06). The bevel gear (27) is meshed with a gear set (26) that is rotatably connected to the stabilizing box (24). The other end of the gear set (26) is connected to a bevel gear (28) that is fixedly connected to the filter cartridge (07).

4. The magnesium sulfate solid-liquid mixture separation device as described in claim 2, characterized in that, The auxiliary component operation includes a vertical shaft (23), with multiple drive rings (22) fixedly sleeved on the outside of the vertical shaft (23), a follower tube (09) fixedly connected to the outside of the drive rings (22), and a cleaning block (08) that contacts the inner wall of the filter cylinder (07) fixedly connected to the other end of the follower tube (09). The bottom of the vertical shaft (23) is connected to the vibration component.

5. The magnesium sulfate solid-liquid mixture separation device as described in claim 4, characterized in that, The drive ring (22) and the cleaning block (08) are hollow. The vertical shaft (23) is provided with a through hole that communicates with the drive ring (22). The cleaning block (08) is provided with multiple overflow holes on one side.

6. The magnesium sulfate solid-liquid mixture separation device as described in claim 4, characterized in that, The vibration assembly includes a support ring (11) rotatably connected to the filter cylinder (07), a buffer column (12) rotatably connected to one side of the support ring (11), and the other end of the buffer column (12) rotatably connected to the packaging box (01). The bottom of the filter cylinder (07) is also rotatably connected to a lifting column (14). The bottom of the vertical shaft (23) is fixedly connected to a filter tube (17) that is slidably sleeved with the lifting column (14). The filter tube (17) is rotatably connected to the discharge mechanism.

7. The magnesium sulfate solid-liquid mixture separation device as described in claim 6, characterized in that, The discharge mechanism includes a bottom box (05) fixedly connected to the packaging box (01). A partition plate (20) is fixedly connected in the middle of the bottom box (05), which divides the bottom box (05) into upper and lower spaces. A series pipe (15) is also fixedly connected to the partition plate (20), which passes through the two spaces of the bottom box (05). A secondary discharge pipe (29) extending to the outside of the packaging box (01) is also fixedly connected to the partition plate (20). A plurality of main discharge pipes (31) are also connected to the bottom of the filter cylinder (07). A collection ring (30) rotatably connected to the bottom of the main discharge pipe (31) is connected to the bottom of the filter cylinder (07). A discharge pipe (32) extending to the outside of the main discharge pipe (31) is connected to the bottom of the collection ring (30).

8. The magnesium sulfate solid-liquid mixture separation device as described in claim 6, characterized in that, Multiple drive blocks (13) are fixedly connected to the outside of the lifting column (14). One side of the drive block (13) is in contact with a rotating ring. One side of the rotating ring is fixedly connected to an auxiliary shaft (21) extending to the bottom box (05). The auxiliary shaft (21) is rotatably connected to the bottom box (05).

9. The magnesium sulfate solid-liquid mixture separation device as described in claim 6, characterized in that, The filter cylinder (07) is provided with multiple overflow holes, and the outer side of the filter tube (17) is provided with a sliding expansion sleeve (16), and the bottom of the expansion sleeve (16) is provided with a receiving sleeve (19) connected to the return pipe (18).

10. The magnesium sulfate solid-liquid mixture separation device as described in claim 4, characterized in that, The outer side of the follower tube (09) is also fitted with an installation sleeve (34), and multiple crystallizing cones (33) are fixedly connected to the installation sleeve (34).

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