A multi-segment three-phase horizontal screw centrifuge

Abstract

This invention discloses a multi-segment three-phase horizontal screw centrifuge, relating to the field of centrifuges. It includes a central shaft and a rotating drum, with the drum mounted on the central shaft and spiral blades positioned between them. One end of the drum has several solid discharge holes, the other end has several light liquid discharge holes, and the end of the drum near the light liquid discharge holes has several heavy liquid discharge holes, located close to the central shaft. Several closing components are provided on the drum corresponding to the light liquid discharge holes; these components have closed and open states. This allows the centrifuge to be used for separating solid and liquid phases, and prevents heavy liquid from exiting through the light liquid discharge holes during centrifugation. It also prevents the light liquid discharge holes, corresponding discharge pipes, and pumps from entering with heavy liquid, thus avoiding the need for cleaning and replacement, saving time and effort, reducing maintenance time, and improving efficiency.

Description

Technical Field

[0001] This invention relates to the field of centrifuges, and particularly to a multi-segment three-phase horizontal screw centrifuge. Background Technology

[0002] The three-phase horizontal screw centrifuge, also known as the three-phase horizontal screw discharge sedimentation centrifuge, works on a similar principle to the standard horizontal screw discharge sedimentation centrifuge. It achieves sedimentation and stratification based on the difference in solid density and the centrifugal force field. The lighter liquid phase is closer to the axis of rotation, while the heavier liquid phase is closer to the inner wall of the drum. The heaviest solid phase settles on the inner wall of the drum. The light and heavy liquid phases are discharged from their respective channels, while the solid phase is discharged by the screw conveyor.

[0003] Chinese patent CN106622687A discloses a liquid-solid-liquid three-phase horizontal screw centrifuge, including a rotating drum, a spiral cylinder disposed inside the rotating drum, and small-end journals and large-end journals respectively disposed at both ends of the rotating drum. A light liquid layer, a solid layer, and a heavy liquid layer are disposed inside the rotating drum from the inside to the outside. The inner wall of the end of the rotating drum connected to the large-end journal has a small, outwardly opening cone angle. A light liquid layer discharge channel and a heavy liquid layer discharge channel are respectively disposed on the large-end journal. A liquid phase separation mechanism A and a liquid phase separation mechanism B are respectively disposed at the light liquid layer discharge channel and the heavy liquid layer discharge channel. This centrifuge has the advantages of ingenious structural design and reliable operation. Its use can improve the separation effect between the light liquid, solid phase, and heavy liquid, ensuring the stability of the centrifuge operation.

[0004] Chinese patent CN103143453A discloses a three-phase horizontal screw centrifuge, including a differential, a screw propeller, a drum, a casing, a base, a motor, and a feed pipe. The casing is fixed on the base, and the drum is located inside the casing. The screw propeller is located at the center of the drum, and a material pool is formed between the inner wall of the drum and the screw propeller. The differential is connected to the screw propeller and is located on the outside of the cylindrical area of ​​the drum. The motor includes a main motor and an auxiliary motor. The feed pipe is located on one side of the conical area of ​​the drum. The screw propeller has a material distribution chamber inside, which is fixed and connected to the feed pipe. The material distribution chamber is connected to the material pool through a distribution port on the inner wall of the screw propeller. The outer wall of the screw propeller has blades, and the outer wall of the conical area of ​​the screw propeller near the drum has a baffle suitable for oil-water separation of aged oil, which can make the oil-water interface clearer, obtain purer oil, and have a good separation effect.

[0005] The aforementioned patents and prior art also have the following defects:

[0006] Because a three-phase centrifuge has two outlets, one for heavy liquid and one for light liquid, it cannot perform liquid-solid two-phase separation containing water. This is because during the two-phase separation process, water will exit through the two outlets and enter the original light liquid outlet and outlet channel, causing it to contain water. When three-phase separation is performed again, the light liquid enters the light liquid outlet and outlet channel and mixes with the water, resulting in a decrease in the light liquid separation effect. After the two-phase separation, the light liquid outlet and outlet channel need to be cleaned and maintained, which is quite troublesome and reduces the separation efficiency.

[0007] Therefore, this application provides a multi-segment three-phase horizontal screw centrifuge to meet the requirements. Summary of the Invention

[0008] The purpose of this application is to provide a multi-segment three-phase horizontal screw centrifuge, which can be used to separate solid and liquid two-phase materials. It can also prevent the heavy liquid from being discharged through the light liquid discharge hole during the centrifugation of solid and liquid two-phase materials. It prevents the light liquid discharge hole and the corresponding discharge pipe and pump body from entering the heavy liquid, which would require cleaning and replacement. This saves time and effort, reduces maintenance time, and improves efficiency.

[0009] To achieve the above objectives, this application provides the following technical solution: a multi-segment three-phase horizontal screw centrifuge, comprising a central shaft and a rotating drum, the rotating drum being sleeved on the central shaft, and a spiral blade being disposed between the central shaft and the rotating drum; a plurality of solid discharge holes are provided on one end sidewall of the rotating drum, a plurality of light liquid discharge holes are provided on the other end sidewall of the rotating drum, and a plurality of heavy liquid discharge holes are provided on the end of the rotating drum near the light liquid discharge holes, and the plurality of heavy liquid discharge holes are disposed near the central shaft; a plurality of closing components are provided on the rotating drum corresponding to the plurality of light liquid discharge holes;

[0010] The closing component has a closed state and an open state; several closing components can switch synchronously between the closed state and the open state through an operation component;

[0011] The closing assembly includes a driving unit, a closing unit, and a sealing unit; the closing unit includes a moving block, a blocking block, a pushing block, and a pushing plate; in the open state, the blocking block is located on one side of the light liquid discharge port; in the closed state, the blocking block is located inside the light liquid discharge port.

[0012] The ejector block is fixedly mounted on the block. During the process of the operating component switching the closing component from the open state to the closed state, the operating component drives the driving unit. The driving unit causes the moving block to move towards the drum. The moving block can drive the block to move. The block drives the ejector block to move on the ejector plate. The end of the ejector plate away from the light liquid discharge hole is inclined. When the ejector block moves towards the drum, it drives the block to move to the position corresponding to the light liquid discharge hole. The moving block continues to move and pushes the block into the light liquid discharge hole. The block moves from one side of the light liquid discharge hole to the light liquid discharge hole, completing the switching of the closing component from the open state to the closed state.

[0013] The sealing unit includes a sealing cover and a sealing housing with an opening on one side. When the closing component is in the open state, the blocking block is disposed inside the sealing housing, and the sealing cover is located at the opening end of the sealing housing. When the closing component switches from the open state to the closed state, the blocking block can push the sealing cover to move away from the sealing housing.

[0014] Preferably, the closing assembly further includes an assembly base, and the closed housing is fixedly mounted on the assembly base; the driving unit includes a threaded rod and a driving gear, one end of the threaded rod is rotatably connected to the assembly base, and the other end of the threaded rod passes through the closed housing and is rotatably connected to the closed housing; the moving block is sleeved on the threaded rod and threadedly connected to the threaded rod; the driving gear is fixedly mounted on the end of the threaded rod away from the assembly base; the operating assembly includes an operating gear ring, a rotating ring, and several operating inserts; the rotating ring is rotatably sleeved on the drum, the operating gear ring is fixedly mounted on the rotating ring, and the operating gear ring meshes with the driving gears in several of the closing assemblies; each of the several operating inserts has an insertion hole.

[0015] Preferably, each of the several operation plug positions on the drum is connected to a limiting component. The limiting component includes a limiting block, a stop block, and two sets of limiting units. The limiting block is fixedly installed on the drum, and the two sets of limiting units are respectively disposed on the side of the limiting block near the stop block. The stop block is disposed on the corresponding operation plug. The limiting unit includes two limiting plates, and both limiting plates are fixedly installed on the limiting block.

[0016] When the operating component switches the closing component between an open state and a closed state, the stop block switches between two sets of limiting units; when the stop block is within a limiting unit, two limiting plates are located on both sides of the stop block to limit it, and the stop block can limit the corresponding limiting block.

[0017] Preferably, the limiting component further includes an avoidance unit, which includes an avoidance plate, an avoidance block, and an avoidance spring. The avoidance plate is slidably fitted in the insertion hole, and an avoidance channel is provided on the side of the insertion hole near the avoidance block. The avoidance block is disposed in the avoidance channel, one end of the avoidance block is fixedly mounted on the avoidance plate, and the other end of the avoidance block is fixedly mounted on the stop block.

[0018] Preferably, two sliders are fixedly installed on the stop block, and grooves are provided on both sides of the operating plug. The two sliders slide in the grooves. A guide block is fixedly installed at the end of the stop block away from the drum. The guide block gradually retracts from the sides of the stop block towards the center of the stop block.

[0019] Preferably, the enclosed unit further includes a telescopic cylinder, a telescopic rod, and a closing tension spring. One end of the telescopic cylinder is fixedly installed on the inner wall of the enclosed housing. The telescopic rod is inserted into the telescopic cylinder, and the other end of the telescopic rod is fixedly installed on the enclosed cover plate. One end of the closing tension spring is fixedly installed on the inner wall of the enclosed housing, and the other end of the closing tension spring is fixedly installed on the enclosed cover plate. The closing tension spring is sleeved on the telescopic cylinder and the telescopic rod.

[0020] Preferably, the closing unit further includes a support plate, a support rod, a connecting block, a return spring, and several support blocks. The support plate is fixedly installed on the blocking block. The support rod is fixedly installed on the blocking block and the support plate through several support blocks. The connecting block is sleeved on the support rod and slides with the support rod. One end of the return spring is fixedly installed on the corresponding support block, and the other end of the return spring is fixedly installed on the corresponding end of the connecting block. The connecting block is fixedly installed on the moving block.

[0021] Preferably, the drum is further fitted with a housing, the bottom of which is provided with a support base. The housing is fixedly mounted on the support base. A support plate is rotatably fitted onto the drum, and the support plate is fixedly mounted on the inner wall of the housing. Liquid feeding assemblies are provided at both the light liquid feeding port and the heavy liquid feeding port on the drum, and a solid feeding assembly is provided at the solid feeding port on the drum. The liquid feeding assembly includes two liquid feeding sealing plates, a liquid feeding funnel, a feeding pipe, and a transfer liquid pump. Both liquid feeding sealing plates are rotatably connected to the drum and fixedly mounted inside the housing. The liquid feeding funnel is fixedly mounted on the two liquid feeding sealing plates. The feeding pipe... The bottom of the liquid feeding funnel is fixedly connected, and the other end of the feeding pipe is connected to the transfer liquid pump; the two liquid feeding sealing plates in the liquid feeding assembly located at the light liquid feeding hole are respectively located on both sides of the light liquid feeding hole, and the two liquid feeding sealing plates in the liquid feeding assembly located at the heavy liquid feeding hole are respectively located on both sides of the heavy liquid feeding hole; the solid feeding assembly includes two solid feeding sealing plates and a solid feeding funnel, the two solid feeding sealing plates are rotatably sleeved on the drum, the two solid feeding sealing plates are fixedly installed inside the outer shell, the solid feeding funnel is fixedly installed on the two solid feeding sealing plates, and the liquid feeding funnel and the solid feeding funnel are both disposed through the bottom of the outer shell.

[0022] Preferably, the central shaft is hollow, passing through both ends of the drum and rotatably connected to it; a discharge hole is provided near the center of the central shaft, a feed pipe is rotatably connected to one end of the central shaft, and a feed pump is connected to the other end of the feed pipe; the spiral blade is fixedly connected to the central shaft, and the spiral blade includes a horizontal spiral section and a contracting spiral section; the diameter of the horizontal spiral section of the spiral blade is uniform, and the diameter of the contracting spiral section of the spiral blade gradually decreases away from the horizontal spiral section; the inner diameter of the drum at the end corresponding to the contracting spiral section gradually decreases, and the outer ring of the spiral blade abuts against the inner wall of the drum; the spiral blade in the central shaft... Both the spindle and the drum are connected to a drive assembly. The drive assembly includes a variable frequency motor and a belt unit. The belt unit includes a drive pulley, a driven pulley, and a belt. The drive pulley is fixedly installed at the output end of the variable frequency motor. The belt is connected to the drive pulley and the driven pulley. A rotating tube is fixedly installed on the drum. The rotating tube is rotatably connected to the central shaft. The rotating ring passes through the outer shell and is rotatably connected to the outer shell. The driven pulley in the drive assembly connected to the central shaft is fixedly sleeved on the central shaft. The driven pulley in the drive assembly connected to the drum is fixedly sleeved on the rotating tube.

[0023] Preferably, an operating channel is provided on the outer casing corresponding to the position of the rotating ring, and the operating channel extends from one side of the outer casing to the other side.

[0024] In summary, the technical effects and advantages of this invention are as follows:

[0025] 1. In this invention, the blocking block moves into the light liquid discharge hole, blocking it. This allows the centrifuge to be used while separating solid and liquid two-phase materials, and prevents the heavy liquid from exiting through the light liquid discharge hole during solid-liquid separation. This prevents the light liquid discharge hole, corresponding discharge pipe, and pump body from entering with heavy liquid, thus avoiding the need for cleaning and replacement. This saves time and effort, reduces maintenance time, and improves efficiency. When separating three-phase materials again, the discharge pipe corresponding to the light liquid discharge hole will not enter with heavy liquid, allowing the centrifuge to continue operating smoothly. The quality of the light liquid is better; the centrifugation effect is improved. During three-phase separation, the block is located on one side of the light liquid discharge hole. The block will not be located at the light liquid discharge hole and will not block the discharge of the light liquid. When the light liquid in the light liquid discharge hole has a certain pressure, it will not wash away the block or be blocked by the block. The discharge is smoother and the wear of the block is reduced. In addition, the block is located in the closed shell and the closed cover plate closes the closed shell, which facilitates the maintenance and cleaning of the light liquid discharge hole and the discharge channel.

[0026] 2. In this invention, when it is necessary to switch the closed and open states of the closing components, a rod-shaped tool is inserted into the socket and the rod-shaped tool is turned. The rod-shaped tool drives the operating block to rotate, the operating block drives the rotating ring to rotate, the rotating ring drives the operating gear ring to rotate, the operating gear ring drives the drive gear to rotate, and the drive gear drives the threaded rod to rotate, so that the moving block moves on the threaded rod. The operating gear ring can drive the threaded rods in multiple drive units to rotate, so as to simultaneously switch the closed and open states of multiple closing components, making the operation simpler and faster.

[0027] 3. In this invention, the centrifuge separates the liquid and solid. The solid moves to one end of the drum and is discharged through the solid discharge funnel, while the liquid moves to the other end of the drum. During the movement, the light liquid and the heavy liquid are separated again. The light liquid is discharged through the light liquid discharge hole and the corresponding liquid discharge funnel, while the heavy liquid is discharged through the heavy liquid discharge hole and the corresponding liquid discharge funnel. The discharged light liquid and heavy liquid are respectively moved to the next processing step by the corresponding transfer liquid pump. The liquid is transferred through pipelines, which has high transfer efficiency and is not easy to leak. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the supporting base, outer shell, and operating channel in this invention;

[0030] Figure 2 This is a schematic diagram of the structure of the outer shell, variable frequency motor, operating channel and feeding pipe in this invention;

[0031] Figure 3 This is a schematic diagram of the internal structure of the outer casing of the present invention;

[0032] Figure 4 For the present invention Figure 3 Enlarged view of section A;

[0033] Figure 5 This is a schematic diagram of the structure of the outer shell, the feed pipe, and the transfer liquid pump in this invention;

[0034] Figure 6 This is a schematic diagram of the structure of the rotating drum, central shaft, and solid feeding hole in this invention;

[0035] Figure 7 For the present invention Figure 6 Enlarged view of section B;

[0036] Figure 8 This is a schematic diagram of the heavy liquid discharge hole, central shaft, and rotating drum in this invention;

[0037] Figure 9 For the present invention Figure 8 Enlarged view of section C;

[0038] Figure 10 This is a schematic diagram of the structure of the rotating drum and the central shaft in this invention;

[0039] Figure 11 For the present invention Figure 10 Enlarged view of section D;

[0040] Figure 12 This is a schematic diagram of the structure of the closing component, central shaft, and rotating drum in this invention;

[0041] Figure 13 For the present invention Figure 12 Enlarged view of section E in the middle;

[0042] Figure 14This is a schematic diagram of the structure of the operating components, central shaft, and rotating drum in this invention;

[0043] Figure 15 For the present invention Figure 14 Enlarged view of section F in the middle;

[0044] Figure 16 This is a schematic diagram of the spiral blade and discharge hole in this invention.

[0045] In the diagram: 1. Central shaft; 2. Drum; 3. Closing assembly; 31. Assembly base; 4. Drive unit; 41. Threaded rod; 42. Drive gear; 5. Closing unit; 51. Moving block; 52. Blocking block; 53. Push-out block; 54. Push-out plate; 55. Support plate; 56. Support rod; 57. Connecting block; 58. Return spring; 6. Sealing unit; 61. Sealing cover plate; 62. Sealing housing; 63. Telescopic cylinder; 64. Telescopic rod; 65. Sealing tension spring; 7. Operating assembly; 71. Operating gear ring; 72. Rotating ring; 73. Operating insert block; 8. Limiting assembly; 81. Limiting block; 82. 83. Stop; 84. Limiting plate; 85. Clearance plate; 86. Clearance block; 9. Clearance spring; 10. Support base; 11. Operating channel; 12. Liquid discharge sealing plate; 13. Liquid discharge funnel; 14. Discharge pipe; 15. Transfer liquid pump; 16. Solid discharge sealing plate; 17. Solid discharge funnel; 18. Solid discharge hole; 19. Light liquid discharge hole; 20. Heavy liquid discharge hole; 21. Spiral blade; 22. Sliding block; 23. Slide groove; 24. Guide block; 25. Outer shell; 26. Discharge hole; 27. Feed pipe; 28. Feed pump; 29. ​​Variable frequency motor; 30. Belt unit; 21. Rotating pipe. Detailed Implementation

[0046] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] Example: Reference Figures 1-16 The multi-segment three-phase horizontal screw centrifuge shown includes a central shaft 1 and a rotating drum 2. The rotating drum 2 is sleeved on the central shaft 1, and a spiral blade 20 is arranged between the central shaft 1 and the rotating drum 2. A plurality of solid discharge holes 17 are opened on one side wall of the rotating drum 2, and a plurality of light liquid discharge holes 18 are opened on the other side wall of the rotating drum 2. A plurality of heavy liquid discharge holes 19 are opened on the end of the rotating drum 2 near the light liquid discharge holes 18, and the plurality of heavy liquid discharge holes 19 are arranged close to the central shaft 1. A plurality of closing components 3 are arranged on the rotating drum 2 corresponding to the plurality of light liquid discharge holes 18.

[0048] The closing component 3 has a closed state and an open state; several closing components 3 can switch between the closed state and the open state synchronously through the operation component 7;

[0049] The closing assembly 3 includes a drive unit 4, a closing unit 5, and a sealing unit 6; the closing unit 5 includes a moving block 51, a blocking block 52, an ejection block 53, and an ejection plate 54. In the open state, the blocking block 52 is located on one side of the light liquid discharge hole 18; in the closed state, the blocking block 52 is located inside the light liquid discharge hole 18.

[0050] The ejector block 53 is fixedly installed on the block block 52. During the process of the operation component 7 switching the closing component 3 from the open state to the closed state, the operation component 7 drives the drive unit 4. The drive unit 4 causes the moving block 51 to move towards the drum 2. The moving block 51 can drive the block block 52 to move. The block block 52 drives the ejector block 53 to move on the ejector plate 54. The end of the ejector plate 54 away from the light liquid discharge hole 18 is inclined. When the ejector block 53 moves towards the drum 2, it drives the block block 52 to move to the corresponding position of the light liquid discharge hole 18. The moving block 51 continues to move and pushes the block block 52 into the light liquid discharge hole 18. The block block 52 moves from one side of the light liquid discharge hole 18 to inside the light liquid discharge hole 18, completing the switching of the closing component 3 from the open state to the closed state.

[0051] The closing unit 6 includes a closing cover plate 61 and a closing housing 62 with an opening on one side. When the closing component 3 is in the open state, the blocking block 52 is disposed inside the closing housing 62, and the closing cover plate 61 is located at the opening end of the closing housing 62. When the closing component 3 switches from the open state to the closed state, the blocking block 52 can push the closing cover plate 61 to move away from the closing housing 62.

[0052] When it is necessary to switch the closing component 3 from the open state to the closed state, the operating component 7 moves the moving block 51 towards the drum 2 via the driving unit 4. The moving block 51 drives the blocking block 52 to move, and the blocking block 52 drives the ejecting block 53 to move. The ejecting block 53 moves on the inclined surface of the ejecting plate 54. The ejecting plate 54 causes the ejecting block 53 to move towards the light liquid discharge hole 18 while moving towards the drum 2. The ejecting block 53 drives the blocking block 52 to the position of the light liquid discharge hole 18. As the moving block 51 drives the blocking block 52 to move, the blocking block 52 moves into the light liquid discharge hole 18, completing the switch of the closing component 3 from the open state to the closed state. Conversely, the blocking block 52 resets, and the closing component 3 switches from the closed state to the open state.

[0053] The blocking block 52 moves into the light liquid discharge port 18, blocking it. This allows the centrifuge to be used for separating solid and liquid two-phase materials, and prevents heavy liquid from exiting through the light liquid discharge port 18 during solid-liquid separation. This prevents heavy liquid from entering the light liquid discharge port 18, its corresponding discharge pipe, and pump body, thus saving time and effort, reducing maintenance time, and improving efficiency. When separating three-phase materials again, the discharge pipe corresponding to the light liquid discharge port 18 will not have heavy liquid entering, resulting in better quality light liquid from the centrifugation; thus improving the centrifugation efficiency. As a result, during three-phase separation, the blockage block 52 is located on one side of the light liquid discharge hole 18, and will not be located at the position of the light liquid discharge hole 18, thus not obstructing the discharge of the light liquid discharge hole 18. When the light liquid in the light liquid discharge hole 18 is discharged under certain pressure, it will not wash away the blockage block 52, nor will it be blocked by the blockage block 52, resulting in smoother discharge and reduced wear on the blockage block 52. Furthermore, the blockage block 52 is located inside the closed housing 62, and the closed cover plate 61 closes the closed housing 62, facilitating the maintenance and cleaning of the light liquid discharge hole 18 and the discharge channel.

[0054] When the blocking block 52 is located inside the light liquid discharge hole 18, the closing component 3 is in the closed state; when the blocking block 52 is located inside the closed housing 62, the closing component 3 is in the open state.

[0055] Furthermore, a sealing ring is fixedly fitted onto the blocking block 52. The sealing ring is made of rubber. When the closing component 3 is in the closed state, the sealing ring abuts against the rotating drum 2, thereby increasing the seal on the light liquid discharge hole 18 and preventing leakage.

[0056] Furthermore, referring to Figures 1-16 The closing assembly 3 also includes an assembly base 31, on which the closed housing 62 is fixedly mounted; the drive unit 4 includes a threaded rod 41 and a drive gear 42, one end of the threaded rod 41 is rotatably connected to the assembly base 31, and the other end of the threaded rod 41 passes through the closed housing 62 and is rotatably connected to the closed housing 62, the moving block 51 is sleeved on the threaded rod 41 and threadedly connected to the threaded rod 41, and the drive gear 42 is fixedly mounted on the end of the threaded rod 41 away from the assembly base 31; the operation assembly 7 includes an operation gear ring 71, a rotating ring 72 and several operation inserts 73; the rotating ring 72 is rotatably sleeved on the drum 2, the operation gear ring 71 is fixedly mounted on the rotating ring 72, and the operation gear ring 71 meshes with the drive gears 42 in the several closing assemblies 3; the several operation inserts 73 are all provided with insertion holes.

[0057] When it is necessary to switch the closed and open states of the closing component 3, insert a rod-shaped tool into the socket and bend the rod-shaped tool. The rod-shaped tool drives the operating block 73 to rotate, the operating block 73 drives the rotating ring 72 to rotate, the rotating ring 72 drives the operating gear ring 71 to rotate, the operating gear ring 71 drives the drive gear 42 to rotate, and the drive gear 42 drives the threaded rod 41 to rotate, causing the moving block 51 to move on the threaded rod 41. By changing the rotation direction of the operating block 73 through the rod-shaped tool, the rotation direction of the threaded rod 41 is changed, thereby changing the movement direction of the moving block 51, thus achieving the switching between the closed and open states of the closing component 3. The operating gear ring 71 can drive the threaded rods 41 in multiple drive units 4 to rotate, achieving the simultaneous switching between the closed and open states of multiple closing components 3, making the operation simpler and faster.

[0058] Furthermore, referring to Figures 1-16 Each of the several operation blocks 73 on the drum 2 is connected to a limit component 8. The limit component 8 includes a limit block 81, a stop block 82, and two sets of limit units. The limit block 81 is fixedly installed on the drum 2. The two sets of limit units are respectively set on the side of the limit block 81 near the stop block 82. The stop block 82 is set on the corresponding operation block 73. The limit unit includes two limit plates 83, and both limit plates 83 are fixedly installed on the limit block 81.

[0059] When the operating component 7 switches the closing component 3 between the open and closed states, the stop block 82 switches between the two sets of limiting units; when the stop block 82 is within the limiting unit, two limiting plates 83 are located on both sides of the stop block 82 to limit it, and the stop block 82 can limit the corresponding limiting block 81.

[0060] When the operating block 73 rotates, it drives the stop block 82 to move. When the closing component 3 is in the closed and open states, the stop block 82 is located between the two limit plates 83. The limit plates 83 prevent the stop block 82 from rotating, thus preventing the operating block 73 from rotating. This allows the operating component 7 to rotate with the drum 2 without adjustment, preventing relative rotation between the operating gear ring 71 and the drum 2. This ensures that the closing component 3 will not switch between the closed and open states without operation.

[0061] Furthermore, referring to Figures 1-16 The limiting component 8 also includes an avoidance unit, which includes an avoidance plate 84, an avoidance block 85 and an avoidance spring 86. The avoidance plate 84 is slidably fitted in the socket. An avoidance channel is provided on the side of the socket near the avoidance block 85. The avoidance block 85 is disposed in the avoidance channel. One end of the avoidance block 85 is fixedly installed on the avoidance plate 84 and the other end of the avoidance block 85 is fixedly installed on the stop block 82.

[0062] When the rod-shaped tool is inserted into the socket, it pushes the clearance plate 84 to move, compressing the clearance spring 86. The clearance plate 84 also drives the stop block 82 to move via the clearance block 85, causing the stop block 82 to move to a position that is misaligned with the limit plate 83. The stop block 82 can rotate without being limited by the limit plate 83, allowing the stop block 82 to rotate. This allows the operating insert 73 and the operating gear ring 71 to rotate. When the stop block 82 rotates to another limit unit position, the switching of the closing component 3 between the closed and open states is completed. When the rod-shaped tool is pulled out, the clearance spring 86 resets, causing the clearance plate 84 to reset. The clearance plate 84 then drives the stop block 82 to reset via the clearance block 85. The stop block 82 then enters between the two corresponding limit plates 83, limiting the operating gear ring 71 and the operating insert 73.

[0063] Furthermore, referring to Figures 1-16 Two sliders 21 are fixedly installed on the stop block 82. Slide grooves 22 are provided on both sides of the operating plug 73. The two sliders 21 slide in the slide grooves 22. A guide block 23 is fixedly installed on the end of the stop block 82 away from the drum 2. The guide block 23 gradually shrinks from both sides of the stop block 82 towards the center of the stop block 82.

[0064] The stop block 82 drives the slider 21 to move within the slide groove 22, making the stop block 82 more stable and less prone to shaking. When the stop block 82 returns to its original position between the two limiting plates 83, the guide block 23 abuts against the limiting plate 83. The stop block 82 can enter between the two limiting plates 83 under the action of the inclined surface of the guide block 23, making it less likely for the stop block 82 to be stuck by the limiting plate 83, thus ensuring smooth and fluid operation.

[0065] Furthermore, referring to Figures 1-16 The sealing unit 6 also includes a telescopic cylinder 63, a telescopic rod 64, and a sealing spring 65. One end of the telescopic cylinder 63 is fixedly installed on the inner wall of the sealing housing 62. The telescopic rod 64 is inserted into the telescopic cylinder 63, and the other end of the telescopic rod 64 is fixedly installed on the sealing cover plate 61. One end of the sealing spring 65 is fixedly installed on the inner wall of the sealing housing 62, and the other end of the sealing spring 65 is fixedly installed on the sealing cover plate 61. The sealing spring 65 is sleeved on the telescopic cylinder 63 and the telescopic rod 64. The height of the blocking block 52 is greater than the depth of the light liquid discharge hole 18.

[0066] When the blocking block 52 moves toward the light liquid discharge hole 18, the blocking block 52 pushes the sealing cover 61 to move. The sealing cover 61 drives the telescopic rod 64 to move. The telescopic rod 64 moves inside the telescopic cylinder 63. The sealing cover 61 drives one end of the sealing tension spring 65 to move. The sealing tension spring 65 stores force. When the blocking block 52 moves into the light liquid discharge hole 18, part of the blocking block 52 does not enter the light liquid discharge hole 18, so the blocking block 52 blocks the sealing cover 61. The sealing cover 61 will not reset. When the blocking block 52 resets and moves into the sealed housing 62, the sealing tension spring 65 resets and drives the sealing cover 61 to reset. The sealing cover 61 closes the opening end of the sealed housing 62.

[0067] Furthermore, referring to Figures 1-16 The closing unit 5 also includes a support plate 55, a support rod 56, a connecting block 57, a reset spring 58, and several support blocks. The support plate 55 is fixedly installed on the blocking block 52. The support rod 56 is fixedly installed on the blocking block 52 and the support plate 55 through several support blocks. The connecting block 57 is sleeved on the support rod 56 and slides in cooperation with the support rod 56. One end of the reset spring 58 is fixedly installed on the corresponding support block, and the other end of the reset spring 58 is fixedly installed on the corresponding end of the connecting block 57. The connecting block 57 is fixedly installed on the moving block 51.

[0068] When the blocking block 52 moves toward the light liquid discharge hole 18, the blocking block 52 moves outward through the opening end of the closed housing 62. The blocking block 52 drives the support plate 55 to move, and the support plate 55 drives the support rod 56 to move. The support rod 56 compresses the reset spring 58 through the corresponding support block. When the blocking block 52 resets and moves into the closed housing 62, the support plate 55 and the support rod 56 reset, and the reset spring 58 moves and resets.

[0069] Furthermore, referring to Figures 1-16The drum 2 is also fitted with a housing 24, and a support base 9 is provided at the bottom of the housing 24. The housing 24 is fixedly installed on the support base 9. A support plate 55 is rotatably fitted onto the drum 2 and is fixedly installed on the inner wall of the housing 24. Liquid feeding components are provided at the light liquid feeding hole 18 and the heavy liquid feeding hole 19 of the drum 2, and a solid feeding component is provided at the solid feeding hole 17 of the drum 2. The liquid feeding components include two liquid feeding sealing plates 11, a liquid feeding funnel 12, a feeding pipe 13, and a transfer liquid pump 14. The two liquid feeding sealing plates 11 are rotatably connected to the drum 2 and are fixedly installed inside the housing 24. The liquid feeding funnel 12 is fixedly installed on the two liquid feeding sealing plates 11, and the feeding pipe 13 is fixedly installed on the housing 24. The bottom of the liquid feeding hopper 12 is connected to the fixed connection, and the other end of the feeding pipe 13 is connected to the transfer liquid pump 14; the two liquid feeding sealing plates 11 in the liquid feeding assembly located at the light liquid feeding hole 18 are respectively located on both sides of the light liquid feeding hole 18, and the two liquid feeding sealing plates 11 in the liquid feeding assembly located at the heavy liquid feeding hole 19 are respectively located on both sides of the heavy liquid feeding hole 19; the solid feeding assembly includes two solid feeding sealing plates 15 and a solid feeding funnel 16. The two solid feeding sealing plates 15 are rotatably sleeved on the rotating drum 2, and the two solid feeding sealing plates 15 are fixedly installed inside the outer shell 24. The solid feeding funnel 16 is fixedly installed on the two solid feeding sealing plates 15. The liquid feeding funnel 12 and the solid feeding funnel 16 are both set through the bottom of the outer shell 24.

[0070] The centrifuge separates liquid and solid. The solid moves to one end of the drum 2 and is discharged through the solid discharge funnel 16, while the liquid moves to the other end of the drum 2. During the movement, the light liquid and the heavy liquid are separated again. The light liquid is discharged through the light liquid discharge hole 18 and the corresponding liquid discharge funnel 12, while the heavy liquid is discharged through the heavy liquid discharge hole 19 and the corresponding liquid discharge funnel 12. The discharged light liquid and heavy liquid are respectively moved to the next processing step by the corresponding transfer liquid pump 14. The liquid is transferred through pipelines, which has high transfer efficiency and is not easy to leak.

[0071] Furthermore, referring to Figures 1-16The central shaft 1 is hollow and passes through both ends of the rotating drum 2, rotatably connecting to it. A discharge hole 25 is located near the center of the central shaft 1. A feed pipe 26 is rotatably connected to one end of the central shaft 1, and a feed pump 27 is connected to the other end of the feed pipe 26. A spiral blade 20 is fixedly connected to the central shaft 1. The spiral blade 20 includes a horizontal spiral section and a contracting spiral section. The horizontal spiral section of the spiral blade 20 has a uniform diameter, while the diameter of the contracting spiral section gradually decreases towards the direction away from the horizontal spiral section. The inner diameter of the rotating drum 2 at the end corresponding to the contracting spiral section gradually decreases. The outer ring of the spiral blade 20 abuts against the inner wall of the rotating drum 2. The center of the spiral blade 20... Both shaft 1 and drum 2 are connected to drive components. The drive components include a variable frequency motor 28 and a belt unit 29. The belt unit 29 includes a drive pulley, a driven pulley, and a belt. The drive pulley is fixedly installed at the output end of the variable frequency motor 28. The belt is connected to the drive pulley and the driven pulley. A rotating tube 30 is fixedly installed on drum 2. The rotating tube 30 is rotatably connected to the central shaft 1. The rotating ring 72 passes through the outer shell 24 and is rotatably connected to the outer shell 24. The driven pulley in the drive component connected to the central shaft 1 is fixedly sleeved on the central shaft 1. The driven pulley in the drive component connected to drum 2 is fixedly sleeved on the rotating tube 30.

[0072] The variable frequency motor 28 drives the active pulley to rotate, which in turn drives the belt to rotate. The belt drives the passive pulley to rotate, which in turn drives the corresponding central shaft 1 and rotating tube 30 to rotate. The rotating tube 30 drives the drum 2 to rotate, and the drum 2 and the central shaft 1 have a specified speed difference. The material located between the central shaft 1 and the drum 2 is separated. Solid material is located closer to the drum 2, and liquid material is located closer to the central shaft 1. The material moves forward through the spiral blades 20 and enters the contraction section. The space inside the drum 2 decreases. Due to the poor fluidity of the solid material and the high friction between it and the spiral blades 20, the solid material continues to move forward and is discharged through the solid discharge hole 17. The solid material squeezes the liquid material. As the material continues to enter, the liquid moves towards the light liquid discharge hole 18 and the heavy liquid discharge hole 19. As it moves, the liquid material is separated. The heavy liquid is located closer to the central shaft 1, and the light liquid is located closer to the drum 2. Finally, the heavy liquid is discharged through the heavy liquid discharge hole 19, and the light liquid is discharged through the light liquid discharge hole 18.

[0073] Furthermore, referring to Figures 1-16 An operating channel 10 is provided on the outer casing 24 at the position corresponding to the rotating ring 72. The operating channel 10 extends from one side of the outer casing 24 to the other side, and the rod-shaped tool can be inserted into the insertion hole on the operating plug 73 through the operating channel 10.

[0074] The number of closing components 3 is the same as the number of light liquid discharge holes 18, and the number of limiting components 8 and operating blocks 73 is the same. Preferably, the number of limiting components 8 and operating blocks 73 is 4, so that the drum 2 stops at any position, and the operating channel 10 has at least one operating block 73.

[0075] In another preferred embodiment, a light liquid filter screen is fixedly installed on the inner wall of the drum 2 at the position corresponding to the light liquid discharge hole 18, and a heavy liquid filter screen is fixedly installed on the inner wall of one end of the drum 2 at the position corresponding to the heavy liquid discharge hole 19, to prevent solid discharge and improve the separation effect.

[0076] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-segment three-phase horizontal decanter centrifuge, comprising a central shaft (1) and a rotating drum (2), characterized in that: The drum (2) is sleeved on the central shaft (1), and a spiral blade (20) is provided between the central shaft (1) and the drum (2); a plurality of solid feeding holes (17) are opened on one side wall of the drum (2), a plurality of light liquid feeding holes (18) are opened on the other side wall of the drum (2), a plurality of heavy liquid feeding holes (19) are opened on the end of the drum (2) near the light liquid feeding holes (18), and the plurality of heavy liquid feeding holes (19) are arranged near the central shaft (1); a plurality of closing components (3) are provided on the drum (2) corresponding to the plurality of light liquid feeding holes (18); The closing component (3) has a closed state and an open state; several closing components (3) can be switched synchronously between the closed state and the open state through the operation component (7); The closing assembly (3) includes a driving unit (4), a closing unit (5), and a sealing unit (6); the closing unit (5) includes a moving block (51), a blocking block (52), a pushing block (53), and a pushing plate (54); in the open state, the blocking block (52) is located on one side of the light liquid discharge hole (18); in the closed state, the blocking block (52) is located inside the light liquid discharge hole (18). The ejector block (53) is fixedly mounted on the blocking block (52). During the process of the operating component (7) switching the closing component (3) from the open state to the closed state, the operating component (7) drives the driving unit (4). The driving unit (4) causes the moving block (51) to move closer to the drum (2). The moving block (51) can drive the blocking block (52) to move. The blocking block (52) drives the ejector block (53) to move on the ejector plate (54). The end away from the light liquid discharge hole (18) is inclined, so that while the push block (53) moves toward the drum (2), it drives the block block (52) to move to the position corresponding to the light liquid discharge hole (18). The moving block (51) continues to move and pushes the block block (52) into the light liquid discharge hole (18), so that the block block (52) moves from one side of the light liquid discharge hole (18) to the light liquid discharge hole (18), thus completing the switching of the closing component (3) from the open state to the closed state. The closing unit (6) includes a closing cover plate (61) and a closing housing (62) with an opening on one side. When the closing component (3) is in the open state, the blocking block (52) is disposed inside the closing housing (62). The closing cover plate (61) is located at the opening end of the closing housing (62). When the closing component (3) switches from the open state to the closed state, the blocking block (52) can push the closing cover plate (61) to move away from the closing housing (62). The closing assembly (3) further includes an assembly base (31), and the closed housing (62) is fixedly mounted on the assembly base (31); the drive unit (4) includes a threaded rod (41) and a drive gear (42), one end of the threaded rod (41) is rotatably connected to the assembly base (31), and the other end of the threaded rod (41) passes through the closed housing (62) and is rotatably connected to the closed housing (62), and the moving block (51) is sleeved on the threaded rod (41) and threadedly connected to the threaded rod (41). The drive gear (42) is fixedly installed on the threaded rod (41) at the end away from the mounting base (31); the operating component (7) includes an operating gear ring (71), a rotating ring (72) and a plurality of operating inserts (73); the rotating ring (72) is rotatably sleeved on the drum (2), the operating gear ring (71) is fixedly installed on the rotating ring (72), and the operating gear ring (71) meshes with the drive gear (42) in a plurality of the closing components (3); the plurality of operating inserts (73) are provided with insertion holes; Limiting components (8) are connected to each of the several operation blocks (73) on the drum (2). Each limiting component (8) includes a limiting block (81), a stop block (82), and two sets of limiting units. The limiting block (81) is fixedly installed on the drum (2). The two sets of limiting units are respectively set on the side of the limiting block (81) near the stop block (82). The stop block (82) is set on the corresponding operation block (73). Each limiting unit includes two limiting plates (83), and both limiting plates (83) are fixedly installed on the limiting block (81). When the operating component (7) switches the closing component (3) between the open state and the closed state, the stop (82) switches between two sets of limiting units; when the stop (82) is within the limiting unit, two limiting plates (83) are located on both sides of the stop (82) to limit it, and the stop (82) can limit the corresponding limiting block (81); The limiting component (8) also includes a clearance unit, which includes a clearance plate (84), a clearance block (85), and a clearance spring (86). The clearance plate (84) is slidably fitted in the socket. A clearance channel is provided on the side of the socket near the clearance block (85). The clearance block (85) is disposed in the clearance channel. One end of the clearance block (85) is fixedly installed on the clearance plate (84), and the other end of the clearance block (85) is fixedly installed on the stop block (82).

2. The multi-segment three-phase horizontal screw centrifuge according to claim 1, characterized in that: Two sliders (21) are fixedly installed on the stop block (82). The operation plug (73) has grooves (22) on both sides. The two sliders (21) slide in the grooves (22). A guide block (23) is fixedly installed at the end of the stop block (82) away from the drum (2). The guide block (23) gradually shrinks from both sides of the stop block (82) towards the center of the stop block (82).

3. A multi-segment three-phase horizontal screw centrifuge according to claim 1, characterized in that: The enclosed unit (6) further includes a telescopic cylinder (63), a telescopic rod (64), and a closing tension spring (65). One end of the telescopic cylinder (63) is fixedly installed on the inner wall of the enclosed housing (62). The telescopic rod (64) is inserted into the telescopic cylinder (63). The other end of the telescopic rod (64) is fixedly installed on the enclosed cover plate (61). One end of the closing tension spring (65) is fixedly installed on the inner wall of the enclosed housing (62). The other end of the closing tension spring (65) is fixedly installed on the enclosed cover plate (61). The closing tension spring (65) is sleeved on the telescopic cylinder (63) and the telescopic rod (64).

4. A multi-segment three-phase horizontal screw centrifuge according to claim 1, characterized in that: The closing unit (5) further includes a support plate (55), a support rod (56), a connecting block (57), a reset spring (58), and several support blocks. The support plate (55) is fixedly installed on the blocking block (52). The support rod (56) is fixedly installed on the blocking block (52) and the support plate (55) through several support blocks. The connecting block (57) is sleeved on the support rod (56) and slides with the support rod (56). One end of the reset spring (58) is fixedly installed on the corresponding support block, and the other end of the reset spring (58) is fixedly installed on the corresponding end of the connecting block (57). The connecting block (57) is fixedly installed on the moving block (51).

5. A multi-segment three-phase horizontal screw centrifuge according to claim 1, characterized in that: The drum (2) is also fitted with a shell (24), and a support base (9) is provided at the bottom of the shell (24). The shell (24) is fixedly installed on the support base (9). A support plate (55) is rotatably fitted on the drum (2), and the support plate (55) is fixedly installed on the inner wall of the shell (24). Liquid feeding components are provided at both the light liquid feeding hole (18) and the heavy liquid feeding hole (19) of the drum (2). A solid feeding assembly is provided at the solid feeding hole (17). The liquid feeding assembly includes two liquid feeding sealing plates (11), a liquid feeding funnel (12), a feeding pipe (13), and a transfer liquid pump (14). The two liquid feeding sealing plates (11) are rotatably connected to the drum (2), and the two liquid feeding sealing plates (11) are fixedly installed inside the outer shell (24). The liquid feeding funnel (12) is fixedly installed on the two liquid feeding sealing plates (11). The discharge pipe (13) is fixedly connected to the bottom of the liquid discharge funnel (12), and the other end of the discharge pipe (13) is connected to the transfer liquid pump (14); the two liquid discharge sealing plates (11) in the liquid discharge assembly located at the light liquid discharge hole (18) are respectively located on both sides of the light liquid discharge hole (18), and the two liquid discharge sealing plates (11) in the liquid discharge assembly located at the heavy liquid discharge hole (19) are respectively located on both sides of the heavy liquid discharge hole (19). Both sides; the solid feeding assembly includes two solid feeding sealing plates (15) and a solid feeding funnel (16). The two solid feeding sealing plates (15) are rotatably sleeved on the drum (2). The two solid feeding sealing plates (15) are fixedly installed inside the outer shell (24). The solid feeding funnel (16) is fixedly installed on the two solid feeding sealing plates (15). The liquid feeding funnel (12) and the solid feeding funnel (16) are both disposed through the bottom of the outer shell (24).

6. A multi-segment three-phase horizontal screw centrifuge according to claim 5, characterized in that: The central shaft (1) is hollow and passes through both ends of the drum (2) and is rotatably connected to the drum (2). A discharge hole (25) is provided near the center of the central shaft (1). One end of the central shaft (1) is rotatably connected to a feed pipe (26), and the other end of the feed pipe (26) is connected to a feed pump (27). The spiral blade (20) is fixedly connected to the central shaft (1). The spiral blade (20) includes a horizontal spiral section and a contracting spiral section. The horizontal spiral section of the spiral blade (20) has a uniform diameter, and the diameter of the contracting spiral section gradually decreases in the direction away from the horizontal spiral section. The inner diameter of the drum (2) corresponding to the contracting spiral section gradually decreases. The outer ring of the spiral blade (20) abuts against the inner wall of the drum (2). The spiral blade (20)... Both the central shaft (1) and the drum (2) are connected to a drive assembly. The drive assembly includes a variable frequency motor (28) and a belt unit (29). The belt unit (29) includes a drive pulley, a driven pulley, and a belt. The drive pulley is fixedly installed at the output end of the variable frequency motor (28). The belt is connected to the drive pulley and the driven pulley. A rotating tube (30) is fixedly installed on the drum (2). The rotating tube (30) is rotatably connected to the central shaft (1). The rotating ring (72) passes through the outer shell (24) and is rotatably connected to the outer shell (24). The driven pulley in the drive assembly connected to the central shaft (1) is fixedly sleeved on the central shaft (1). The driven pulley in the drive assembly connected to the drum (2) is fixedly sleeved on the rotating tube (30).

7. A multi-segment three-phase horizontal screw centrifuge according to claim 5, characterized in that: An operating channel (10) is provided on the outer shell (24) corresponding to the position of the rotating ring (72), and the operating channel (10) extends from one side of the outer shell (24) to the other side.

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