Central cylinder and thickener

Abstract

The invention relates to the technical field of thickeners, in particular to a center cylinder and a thickener, the center cylinder comprises a middle cylinder, a flow mixing assembly and a first buffer assembly, an outer cylinder is arranged at the upper end of the middle cylinder, a groove is formed in the upper end of the outer cylinder, a feeding pipe is arranged on the outer wall of the outer cylinder corresponding to the groove, a discharging port is formed in the inner wall of the outer cylinder, and a sealing plate is arranged in the groove corresponding to the discharging port; a flow mixing assembly is arranged in the outer cylinder, a first buffering assembly is arranged on the sealing plate, a second buffering assembly is arranged on the inner wall of the outer cylinder corresponding to the discharging port, and a first flow blocking assembly is arranged on the lower side of the second buffering assembly. When the device is used, tail mortar enters the groove through the feeding pipe, the feeding path of the tail mortar is prolonged through the formed groove, a flocculating agent can be conveniently injected into the tail mortar in the feeding path of the tail mortar in a segmented mode for multiple times through the arranged flow mixing assembly, the flocculating agent can be evenly and more sufficiently mixed with the tail mortar, and the flocculating agent can be recycled. Meanwhile, the flow mixing assembly further improves mixing of the flocculating agent and the tailing slurry, and the flow speed of the mixed materials is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of thickeners, in particular to a central cylinder and a thickener. Background Art

[0002] Thickener is a solid-liquid separation equipment based on gravity sedimentation. It is usually a cylindrical shallow tank with a conical bottom made of concrete, wood or metal welded plates as structural materials. It can concentrate slurry with a solid weight of 10% to 20% into an underflow slurry with a solid content of 45% to 55% through gravity sedimentation. With the help of a slow-running (1 / 3 to 1 / 5 r / min) rake installed in the thickener, the thickened underflow slurry is discharged from the underflow port at the bottom of the thickener. Thickeners are widely used in production sites that require solid-liquid enrichment and separation, such as hydrometallurgy, ore dressing plants, and chemical plants.

[0003] In the process of thickening tailings slurry in the existing thickener, the tailings slurry and the flocculant are mixed unevenly, and the tailings slurry after flocculation and sedimentation will flow out of the central tube at a faster flow rate, with a large impact force, which can easily cause the settled materials at the bottom of the thickener to be washed up and damage the flocs. Therefore, the present invention provides a central tube and a thickener to solve the above-mentioned problems. Summary of the invention

[0004] The object of the present invention is to provide a central cylinder and a thickener to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A central tube comprises a middle tube, a mixing flow component and a first buffer component, wherein an outer tube is provided at the upper end of the middle tube, a groove is provided at the upper end of the outer tube, a feed pipe is provided on the outer wall of the outer tube corresponding to the groove, a discharge port is provided on the inner wall of the outer tube, a sealing plate is provided in the groove corresponding to the discharge port, a mixing flow component is provided in the outer tube, a first buffer component is provided on the sealing plate, a second buffer component is provided on the inner wall of the outer tube corresponding to the discharge port, a first flow blocking component is provided on the lower side of the second buffer component, a plurality of one-way water inlet elbows are provided on the middle tube, a circulation plate is provided on the lower side of the one-way water inlet elbow, and a second flow blocking component is provided on the lower side of the circulation plate.

[0006] As a further scheme of the present invention, the mixing flow component includes a support plate and a fixed block. The support plate is provided in the groove, and a plurality of fixed blocks fixedly connected to the inner wall of the groove are provided on the support plate. A plurality of rotating tubes are passed through the support plate, and a first bearing is provided on the rotating tube. The lower end of the first bearing is fixedly connected to the support plate, and a plurality of stirring blades are provided on the rotating tube. The rotation of the rotating tube facilitates the rotation of the stirring blades. The rotation of the stirring blades further improves the mixing of the flocculant and the tailings slurry, while reducing the flow rate of the mixed material.

[0007] As a further solution of the present invention, a first gear is provided on the rotating tube, two adjacent first gears are meshed with each other, and the right end of the rightmost first gear is meshed with the second gear, a rotating shaft is provided at the lower end of the second gear, a motor is provided at the lower end of the rotating shaft, and the lower end of the motor is fixedly connected to the support plate. By starting the motor, the rotating shaft and the second gear are driven to rotate, and the second gear thereby drives the first gear, the rotating tube and the stirring blade to rotate.

[0008] As a further scheme of the present invention, a plurality of nozzles are provided on the rotating tube, and an outlet pipe is inserted at the upper end of the rotating tube, a second bearing is provided on the outlet pipe, the outer wall of the second bearing is fixedly connected to the inner wall of the rotating tube, the upper end of the outlet pipe is connected to the annular pipe, the upper end of the annular pipe is connected to the inlet pipe, the flocculant is input into the annular pipe through the inlet pipe, then enters the rotating tube through the outlet pipe, and then is sprayed out through the nozzle, the sprayed flocculant is injected into the tailings slurry in sections for multiple times in the feeding path of the tailings slurry, thereby achieving uniform and more sufficient mixing of the flocculant with the tailings slurry.

[0009] As a further solution of the present invention, the first buffer assembly includes a telescopic rod, a buffer plate and a first spring. A plurality of telescopic rods are provided at the left end of the sealing plate, and a buffer plate is provided at the other end of the telescopic rod. A first spring is sleeved on the telescopic rod, and one end of the first spring is fixedly connected to the sealing plate, and the other end of the first spring is fixedly connected to the buffer plate. Through the coordinated use of the telescopic rod, the buffer plate and the first spring structure, a buffer effect is provided for the mixed material entering the discharge port, thereby reducing the flow rate of the mixed material when entering the discharge port.

[0010] As a further solution of the present invention, the second buffer assembly includes a fixed plate, a slide groove, a sliding block, a buffer mesh plate, a sliding rod, a second spring and a first limit block, the inner wall of the outer cylinder is provided with a fixed plate at the vertical side corresponding to the discharge port, the fixed plate is symmetrically slidably connected to the sliding block at one end away from the inner wall of the outer cylinder, a buffer mesh plate is provided on the sliding block corresponding to the discharge port, and a slide groove is provided on the fixed plate corresponding to the sliding block, the sliding block is slidably connected to the sliding rod, the sliding rod passes through the sliding block, one end of the sliding rod is fixedly connected to the inner wall of the slide groove, and the other end of the sliding rod is provided with a first limit block, the sliding rod is sleeved with a second spring, one end of the second spring is fixedly connected to the inner wall of the slide groove, and the other end of the second spring is fixedly connected to the sliding block. Through the coordinated use of the provided sliding block, the buffer mesh plate, the sliding rod and the second spring structure, it is convenient to buffer and decelerate the mixed material flowing out of the discharge port, thereby reducing the impact force of the mixed material when it flows out of the discharge port, and avoiding the large impact force of the mixed material to damage the integrity of the floc.

[0011] As a further solution of the present invention, the first baffle assembly includes fan blades, mounting grooves, baffle plates, third springs, limiting rings and annular grooves, the inner wall of the outer cylinder is slidably connected to the limiting ring, the inner wall of the outer cylinder is provided with an annular groove corresponding to the limiting ring, the inner wall of the limiting ring is provided with a plurality of fan blades, the upper ends of the fan blades are slidably connected to the baffle plates, the upper ends of the fan blades are provided with mounting grooves corresponding to the baffle plates, a plurality of third springs are provided in the mounting grooves, one end of the third spring is fixedly connected to the bottom end of the mounting groove, and the other end of the third spring is fixedly connected to the baffle plates, when the mixed material falls on the fan blades, the limiting ring is driven to rotate, and the baffle plates and the third spring structure are used in combination, so that the baffle plates reduce the flow velocity of the mixed material.

[0012] As a further solution of the present invention, the second baffle assembly includes a baffle mesh plate, a connecting block, a vertical rod, a second limit block and a fourth spring. The baffle mesh plate is provided on the lower side of the circulation plate, and a plurality of connecting blocks are provided on the outer wall of the baffle mesh plate. The connecting block is slidably connected to the vertical rod, which passes through the connecting block, and the upper end of the vertical rod is fixedly connected to the circulation plate, and the lower end of the vertical rod is provided with a second limit block. The fourth spring is sleeved on the vertical rod, and the upper end of the fourth spring is fixedly connected to the circulation plate, and the lower end of the fourth spring is fixedly connected to the connecting block. Through the coordinated use of the baffle mesh plate, the connecting block, the vertical rod and the fourth spring structure, it is convenient to further slow down the diluted mixed material and reduce the impact force of the diluted mixed material falling, thereby avoiding the large impact force of the diluted mixed material to wash away the material settled at the bottom of the thickener.

[0013] As a further solution of the present invention, an embodiment of the present invention further provides a thickener, comprising a central cylinder as described in the above embodiment.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. When the present invention is used, the tailings slurry enters the groove through the feed pipe, and the feeding path of the tailings slurry is extended by the provided groove. The provided mixing flow component facilitates the flocculant to be injected into the tailings slurry in sections in the feeding path of the tailings slurry for multiple times, thereby achieving uniform and more sufficient mixing of the flocculant with the tailings slurry. At the same time, the mixing flow component further improves the mixing of the flocculant and the tailings slurry and reduces the flow rate of the mixed material.

[0015] 2. When the present invention is used, when the mixed material enters the discharge port, the first buffer component is provided to provide a buffering effect for the mixed material entering the discharge port, thereby reducing the flow rate of the mixed material entering the discharge port; when the mixed material flows out of the discharge port, the second buffer component is provided to buffer and slow down the mixed material flowing out of the discharge port, thereby reducing the impact force of the mixed material when it flows out of the discharge port, thereby avoiding the large impact force of the mixed material that destroys the integrity of the flocs.

[0016] 3. When the present invention is used, the first baffle component is provided to facilitate the deceleration of the mixed material flowing out of the discharge port. The decelerated mixed material falls on the circulation plate and flows down in a swirling manner. At the same time, the external clean water flows into the circulation plate through the one-way water inlet elbow to dilute the mixed material. When the clean water is mixed with the mixed material, the flocculant and the tailings slurry are further stirred to make them fully mixed again. The diluted mixed material falls through the second baffle component to achieve further deceleration, reducing the impact force of the diluted mixed material falling, thereby preventing the diluted mixed material from having a large impact force and washing away the settled materials at the bottom of the thickener. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a central tube.

[0018] Figure 2 It is a schematic diagram of the cross-sectional structure of a central tube.

[0019] Figure 3 It is a schematic diagram of the cross-sectional structure of a central tube.

[0020] Figure 4 A central tube Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0021] Figure 5 A central tube Figure 2 Schematic diagram of the enlarged structure at point B in the middle.

[0022] Figure 6 A central tube Figure 2 Schematic diagram of the enlarged structure at point C in the middle.

[0023] Figure 7 A central tube Figure 3 Schematic diagram of the enlarged structure at D in the middle.

[0024] In the figure: 1, middle cylinder; 2, outer cylinder; 201, groove; 202, feed pipe; 203, discharge port; 204, sealing plate; 3, one-way water inlet elbow; 4, mixed flow component; 401, support plate; 402, fixed block; 403, annular tube; 404, feed pipe; 405, rotating shaft; 406, rotating pipe; 407, first bearing; 408, stirring blade; 409, second bearing; 410, discharge pipe; 411, nozzle; 412, first gear; 413, second gear; 414, motor; 5, first buffer component; 501, telescopic rod; 502, buffer Plate; 503, first spring; 6, second buffer assembly; 601, fixed plate; 602, slide groove; 603, slider; 604, buffer mesh; 605, slide rod; 606, second spring; 607, first limit block; 7, first baffle assembly; 701, fan blade; 702, mounting groove; 703, baffle plate; 704, third spring; 705, limit ring; 706, annular groove; 8, circulating plate; 9, second baffle assembly; 901, baffle mesh; 902, connecting block; 903, vertical rod; 904, second limit block; 905, fourth spring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0026] In the present invention, the word "exemplary" is used to mean "used as an example, illustration or description". Any embodiment described as "exemplary" in the present invention is not necessarily to be construed as being preferred or advantageous over other embodiments. The following description is given to enable any technician in the field to implement and use the present invention. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the present invention can be implemented without using these specific details. In other instances, well-known structures and processes will not be elaborated in detail to avoid obscuring the description of the present invention with unnecessary details. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in the present invention. Example

[0027] See also Figures 1 to 7In an embodiment of the present invention, a central tube includes a middle tube 1, a mixing flow component 4 and a first buffer component 5, the middle tube 1 is provided with an outer tube 2 at the upper end, the outer tube 2 is provided with a groove 201 at the upper end, the outer tube 2 is provided with a feed pipe 202 on the outer wall corresponding to the groove 201, and the outer tube 2 is provided with a discharge port 203 on the inner wall, and a sealing plate 204 is provided in the groove 201 corresponding to the discharge port 203, the outer tube 2 is provided with a mixing flow component 4, and the sealing plate 204 is provided with a first buffer component 5, the inner wall of the outer tube 2 is provided with a second buffer component 6 corresponding to the discharge port 203, and the second buffer component 6 is provided with a first flow blocking component 7 at the lower side, a plurality of one-way water inlet elbows 3 are provided on the middle tube 1, and a circulation plate 8 is provided at the lower side of the one-way water inlet elbow 3, and a second flow blocking component 9 is provided at the lower side of the circulation plate 8.

[0028] Specifically, the tailings slurry enters the groove 201 through the feed pipe 202, and the feed path of the tailings slurry is extended by the provided groove 201. The provided mixing component 4 facilitates the injection of the flocculant into the tailings slurry in sections in the feed path of the tailings slurry for multiple times, thereby achieving uniform and more sufficient mixing of the flocculant with the tailings slurry. At the same time, the mixing component 4 further improves the mixing of the flocculant and the tailings slurry, and reduces the flow rate of the mixed material. When the mixed material enters the discharge port 203, the provided first buffer component 5 facilitates the provision of a buffering effect for the mixed material entering the discharge port 203, thereby reducing the flow rate of the mixed material when entering the discharge port 203. When the mixed material flows out of the discharge port 203, the provided second buffer component 6 facilitates the buffering of the mixed material flowing out of the discharge port 203. The speed reduction reduces the impact force of the mixed material when it flows out from the discharge port 203, and avoids the mixed material from being damaged by a large impact force and destroying the integrity of the flocs. At the same time, the first baffle component 7 is provided to facilitate the speed reduction treatment of the mixed material flowing out of the discharge port 203. The mixed material after speed reduction falls on the circulation plate 8 and flows down in a swirling manner. At the same time, the external clean water flows into the circulation plate 8 through the one-way water inlet elbow 3 to dilute the mixed material. When the clean water is mixed with the mixed material, the flocculant and the tailings slurry are further stirred to make them fully mixed again. The diluted mixed material falls through the second baffle component 9 to achieve further speed reduction, reducing the impact force of the diluted mixed material after falling, thereby avoiding the large impact force of the diluted mixed material to wash away the settled materials at the bottom of the thickener.

[0029] The mixing flow component 4 includes a support plate 401 and a fixed block 402. The support plate 401 is provided in the groove 201, and a plurality of fixed blocks 402 fixedly connected to the inner wall of the groove 201 are provided on the support plate 401. A plurality of rotating tubes 406 are passed through the support plate 401, and a first bearing 407 is provided on the rotating tube 406. The lower end of the first bearing 407 is fixedly connected to the support plate 401, and a plurality of stirring blades 408 are provided on the rotating tube 406.

[0030] Specifically, the rotation of the rotating tube 406 facilitates the rotation of the stirring blade 408 , and the rotation of the stirring blade 408 further improves the mixing of the flocculant and the tailings slurry, while reducing the flow rate of the mixed material.

[0031] The rotating tube 406 is provided with a first gear 412, two adjacent first gears 412 are meshed with each other, and the right end of the rightmost first gear 412 is meshed with a second gear 413, a rotating shaft 405 is provided at the lower end of the second gear 413, a motor 414 is provided at the lower end of the rotating shaft 405, and the lower end of the motor 414 is fixedly connected to the support plate 401.

[0032] Specifically, the motor 414 is started to drive the rotating shaft 405 and the second gear 413 to rotate, and the second gear 413 thereby drives the first gear 412, the rotating tube 406 and the stirring blade 408 to rotate.

[0033] The rotating tube 406 is provided with a plurality of nozzles 411 , and an outlet pipe 410 is inserted at the upper end of the rotating tube 406 , a second bearing 409 is provided on the outlet pipe 410 , an outer wall of the second bearing 409 is fixedly connected to the inner wall of the rotating tube 406 , the upper end of the outlet pipe 410 is connected to the annular tube 403 , and the upper end of the annular tube 403 is connected to the inlet pipe 404 .

[0034] Specifically, the flocculant is input into the annular tube 403 through the inlet pipe 404, then enters the rotating tube 406 through the outlet pipe 410, and then sprayed out through the nozzle 411. The sprayed flocculant is injected into the tailings slurry in sections multiple times in the feed path of the tailings slurry, so that the flocculant is evenly and more fully mixed with the tailings slurry.

[0035] The first buffer assembly 5 includes a telescopic rod 501, a buffer plate 502 and a first spring 503. The left end of the sealing plate 204 is provided with a plurality of telescopic rods 501, and the other end of the telescopic rod 501 is provided with a buffer plate 502. The telescopic rod 501 is sleeved with a first spring 503, and one end of the first spring 503 is fixedly connected to the sealing plate 204, and the other end of the first spring 503 is fixedly connected to the buffer plate 502.

[0036] Specifically, the coordinated use of the telescopic rod 501 , the buffer plate 502 and the first spring 503 structure can provide a buffering effect for the mixed material entering the discharge port 203 , thereby reducing the flow rate of the mixed material entering the discharge port 203 .

[0037] The second buffer assembly 6 includes a fixed plate 601, a slide groove 602, a slider 603, a buffer mesh plate 604, a slide rod 605, a second spring 606 and a first limit block 607. The inner wall of the outer cylinder 2 is provided with a fixed plate 601 on the vertical side corresponding to the discharge port 203. The end of the fixed plate 601 away from the inner wall of the outer cylinder 2 is symmetrically slidably connected to the slider 603. The slider 603 is provided with a buffer mesh plate 604 corresponding to the discharge port 203, and the fixed plate 601 is provided with a slide groove 602 corresponding to the slider 603. The slider 603 is slidably connected to the slide rod 605, the slide rod 605 penetrates the slider 603, one end of the slide rod 605 is fixedly connected to the inner wall of the slide groove 602, and the other end of the slide rod 605 is provided with a first limit block 607. The slide rod 605 is sleeved with a second spring 606, one end of the second spring 606 is fixedly connected to the inner wall of the slide groove 602, and the other end of the second spring 606 is fixedly connected to the slider 603.

[0038] Specifically, by cooperating with the slider 603, the buffer mesh plate 604, the slide rod 605 and the second spring 606 structure, it is convenient to buffer and slow down the mixed material flowing out of the discharge port 203, thereby reducing the impact force of the mixed material when it flows out of the discharge port 203, and avoiding the large impact force of the mixed material that destroys the integrity of the floc.

[0039] The first baffle assembly 7 includes a fan blade 701, a mounting groove 702, a baffle plate 703, a third spring 704, a limiting ring 705 and an annular groove 706. The inner wall of the outer cylinder 2 is slidably connected to the limiting ring 705, and the inner wall of the outer cylinder 2 is provided with an annular groove 706 corresponding to the limiting ring 705. The inner wall of the limiting ring 705 is provided with a plurality of fan blades 701. The upper end of the fan blade 701 is slidably connected to the baffle plate 703. The upper end of the fan blade 701 is provided with a mounting groove 702 corresponding to the baffle plate 703. A plurality of third springs 704 are provided in the mounting groove 702. One end of the third spring 704 is fixedly connected to the bottom end of the mounting groove 702, and the other end of the third spring 704 is fixedly connected to the baffle plate 703.

[0040] Specifically, when the mixed material falls on the fan blade 701, it drives the limit ring 705 to rotate, and the spoiler 703 and the third spring 704 are used in cooperation with each other, so that the spoiler 703 reduces the flow velocity of the mixed material.

[0041] The second baffle assembly 9 includes a baffle mesh plate 901, a connecting block 902, a vertical rod 903, a second limit block 904 and a fourth spring 905. The baffle mesh plate 901 is provided on the lower side of the circulation plate 8, and a plurality of connecting blocks 902 are provided on the outer wall of the baffle mesh plate 901. The connecting blocks 902 are slidably connected to the vertical rods 903, and the vertical rods 903 penetrate the connecting blocks 902. The upper ends of the vertical rods 903 are fixedly connected to the circulation plate 8, and the lower ends of the vertical rods 903 are provided with a second limit block 904. The fourth spring 905 is sleeved on the vertical rod 903, and the upper ends of the fourth springs 905 are fixedly connected to the circulation plate 8, and the lower ends of the fourth springs 905 are fixedly connected to the connecting blocks 902.

[0042] Specifically, by using the coordinated structure of the baffle plate 901, the connecting block 902, the vertical rod 903 and the fourth spring 905, the diluted mixed material can be further decelerated, and the impact force of the diluted mixed material falling can be reduced, thereby preventing the diluted mixed material from washing away the settled material at the bottom of the thickener due to the large impact force of the diluted mixed material.

[0043] An embodiment of the present invention further provides a thickener, comprising a central cylinder as described in the above embodiment.

[0044] The working principle of the present invention is: When the present invention is used, the tailings slurry enters the groove 201 through the feed pipe 202, and the feeding path of the tailings slurry is extended by the provided groove 201. The flocculant is input into the annular tube 403 through the feed pipe 404, and then enters the rotating tube 406 through the outlet pipe 410, and then is sprayed out through the nozzle 411. The sprayed flocculant is injected into the tailings slurry in sections for multiple times in the feeding path of the tailings slurry, so that the flocculant is evenly and more fully mixed with the tailings slurry. At the same time, the starting motor 414 drives the rotating shaft 405 and the second gear 413 to rotate, and the second gear 413 thereby drives the first The gear 412, the rotating tube 406 and the stirring blade 408 rotate, and the rotation of the stirring blade 408 further improves the mixing of the flocculant and the tailings slurry, and at the same time reduces the flow rate of the mixed material. When the mixed material enters the discharge port 203, the telescopic rod 501, the buffer plate 502 and the first spring 503 are used in coordination to provide a buffering effect for the mixed material entering the discharge port 203, thereby reducing the flow rate of the mixed material when entering the discharge port 203. When the mixed material flows out of the discharge port 203, the slider 603, the buffer mesh plate 604, The use of the slide bar 605 and the second spring 606 structure is convenient for buffering and slowing down the mixed material flowing out of the discharge port 203, reducing the impact force of the mixed material when it flows out of the discharge port 203, and avoiding the mixed material from damaging the integrity of the flocs due to the large impact force. When the mixed material falls on the fan blade 701, it drives the limit ring 705 to rotate, and the spoiler 703 and the third spring 704 structure are used in conjunction with each other. The spoiler 703 slows down the flow rate of the mixed material, and the mixed material falls on the circulation plate 8 and flows down in a swirling manner. At the same time, through the single Clean water from outside is flowed into the circulation plate 8 toward the water inlet elbow 3 to dilute the mixed material. When the clean water is mixed with the mixed material, the flocculant and the tailings slurry are further stirred to make them fully mixed again. The diluted mixed material falls on the baffle mesh plate 901. The baffle mesh plate 901, the connecting block 902, the vertical rod 903 and the fourth spring 905 are used in coordination to further decelerate the diluted mixed material and reduce the impact force of the diluted mixed material falling, thereby preventing the diluted mixed material from having a large impact force and washing away the settled materials at the bottom of the thickener.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A central tube, comprising a middle tube (1), a flow mixing component (4) and a first buffer component (5), characterized in that: An outer cylinder (2) is provided at the upper end of the middle cylinder (1), a groove (201) is provided at the upper end of the outer cylinder (2), a feed pipe (202) is provided on the outer wall of the outer cylinder (2) corresponding to the groove (201), a discharge port (203) is provided on the inner wall of the outer cylinder (2), a sealing plate (204) is provided in the groove (201) corresponding to the discharge port (203), a mixing flow component (4) is provided in the outer cylinder (2), a first buffer component (5) is provided on the sealing plate (204), a second buffer component (6) is provided on the inner wall of the outer cylinder (2) corresponding to the discharge port (203), a first flow blocking component (7) is provided on the lower side of the second buffer component (6), a plurality of one-way water inlet elbows (3) are provided on the middle cylinder (1), a circulation plate (8) is provided on the lower side of the one-way water inlet elbows (3), and a second flow blocking component (9) is provided on the lower side of the circulation plate (8).

2. A central tube according to claim 1, characterized in that: The mixing flow component (4) comprises a support plate (401) and a fixed block (402); the support plate (401) is arranged in the groove (201); the support plate (401) is provided with a plurality of fixed blocks (402) fixedly connected to the inner wall of the groove (201); a plurality of rotating tubes (406) are passed through the support plate (401); a first bearing (407) is arranged on the rotating tube (406); the lower end of the first bearing (407) is fixedly connected to the support plate (401); and a plurality of stirring blades (408) are arranged on the rotating tube (406).

3. A central tube according to claim 2, characterized in that: The rotating tube (406) is provided with a first gear (412), two adjacent first gears (412) are meshed with each other, and the right end of the rightmost first gear (412) is meshed with a second gear (413), a rotating shaft (405) is provided at the lower end of the second gear (413), a motor (414) is provided at the lower end of the rotating shaft (405), and the lower end of the motor (414) is fixedly connected to the support plate (401).

4. A central tube according to claim 3, characterized in that: The rotating tube (406) is provided with a plurality of nozzles (411), and an outlet tube (410) is inserted into the upper end of the rotating tube (406). A second bearing (409) is provided on the outlet tube (410). The outer wall of the second bearing (409) is fixedly connected to the inner wall of the rotating tube (406). The upper end of the outlet tube (410) is connected to the annular tube (403), and the upper end of the annular tube (403) is connected to the inlet tube (404).

5. A central tube according to claim 1, characterized in that: The first buffer assembly (5) comprises a telescopic rod (501), a buffer plate (502) and a first spring (503); a plurality of telescopic rods (501) are provided at the left end of the sealing plate (204); a buffer plate (502) is provided at the other end of the telescopic rod (501); a first spring (503) is sleeved on the telescopic rod (501); one end of the first spring (503) is fixedly connected to the sealing plate (204); and the other end of the first spring (503) is fixedly connected to the buffer plate (502).

6. A central tube according to claim 1, characterized in that: The second buffer assembly (6) comprises a fixed plate (601), a slide groove (602), a slider (603), a buffer mesh plate (604), a slide rod (605), a second spring (606) and a first limit block (607); a fixed plate (601) is provided on the vertical side of the inner wall of the outer cylinder (2) corresponding to the discharge port (203); an end of the fixed plate (601) away from the inner wall of the outer cylinder (2) is symmetrically slidably connected to the slider (603) in an up-and-down manner; a buffer mesh plate (604) is provided on the slider (603) corresponding to the discharge port (203); and the fixed plate ( A slide groove (602) is provided on the corresponding slider (603) on the slider (601), and a slide rod (605) is slidably connected to the slider (603), and the slide rod (605) passes through the slider (603), one end of the slide rod (605) is fixedly connected to the inner wall of the slide groove (602), and the other end of the slide rod (605) is provided with a first limit block (607), and a second spring (606) is sleeved on the slide rod (605), one end of the second spring (606) is fixedly connected to the inner wall of the slide groove (602), and the other end of the second spring (606) is fixedly connected to the slider (603).

7. A central tube according to claim 1, characterized in that: The first flow-blocking component (7) comprises a fan blade (701), a mounting groove (702), a flow-blocking plate (703), a third spring (704), a limiting ring (705) and an annular groove (706); the inner wall of the outer cylinder (2) is slidably connected to the limiting ring (705); the inner wall of the outer cylinder (2) is provided with an annular groove (706) corresponding to the limiting ring (705); the inner wall of the limiting ring (705) is provided with a plurality of fan blades (701); the upper end of the fan blade (701) is slidably connected to the flow-blocking plate (703); the upper end of the fan blade (701) is provided with a mounting groove (702) corresponding to the flow-blocking plate (703); a plurality of third springs (704) are provided in the mounting groove (702); one end of the third spring (704) is fixedly connected to the bottom end of the mounting groove (702); and the other end of the third spring (704) is fixedly connected to the flow-blocking plate (703).

8. A central tube according to claim 1, characterized in that: The second flow-blocking assembly (9) comprises a flow-blocking mesh plate (901), a connecting block (902), a vertical rod (903), a second limiting block (904) and a fourth spring (905); the flow-blocking mesh plate (901) is provided at the lower side of the circulation plate (8); a plurality of connecting blocks (902) are provided on the outer wall of the flow-blocking mesh plate (901); the connecting blocks (902) are slidably connected to the vertical rods (903); the vertical rods (903) penetrate the connecting blocks (902); the upper ends of the vertical rods (903) are fixedly connected to the circulation plate (8); the lower ends of the vertical rods (903) are provided with a second limiting block (904); the fourth spring (905) is sleeved on the vertical rod (903); the upper ends of the fourth springs (905) are fixedly connected to the circulation plate (8); and the lower ends of the fourth springs (905) are fixedly connected to the connecting blocks (902).

9. A thickener, characterized in that: It comprises a central tube as described in any one of claims 1 to 8.

Images