A horizontal spiral unloading sedimentation centrifuge
By setting up feed channels and skimming devices in the centrifuge, directly treating soft solids, the problem of unstable liquid discharge and slag discharge when handling soft solids is solved, and the separation efficiency and effect are significantly improved.
Patent Information
- Application Number
- CN202420596745.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-26
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-03-26
AI Technical Summary
When existing centrifuges process soft solid mixtures, they cannot effectively separate the solid phase layer, resulting in unstable liquid discharge and slag discharge, which seriously affects the separation ability and effect.
A horizontal screw discharge settlement centrifuge is designed to directly suction and process soft solids by setting up feed channels and skimming devices to ensure the effectiveness and stability of slag discharge.
The clarification and separation efficiency and separation effect of the centrifuge are significantly improved, especially for the concentrated separation of floc soft solids or colloids, ensuring the stability of the slag discharge and the improvement of separation effect.
Smart Images
Figure CN222724549U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of centrifuges, in particular to a horizontal spiral unloading sedimentation centrifuge. Background Art
[0002] The working mechanism of ordinary spiral unloading centrifuge (such as Figure 1 As shown in the figure): the raw slurry enters the hollow shaft of the screw conveyor 3 of the centrifuge from the feed diameter feed pipe 1, and then a number of distribution ports 8 are opened from the hollow shaft of the spiral. The raw slurry passes through the distribution ports 8 and enters the drum 2. Under the action of centrifugal force, centrifugal sedimentation separation is achieved, and the liquid phase / solid phase slag are mutually layered, with the liquid phase in the middle layer and the solid phase slag in the outermost layer and attached to the inner wall of the drum 2. The separated liquid phase flows to the large end of the drum 2 and is discharged from the liquid outlet hopper; the solid phase slag is transported to the small end of the drum 2 by the screw conveyor 3 and discharged from the slag outlet. After being collected in the solid phase slag collection chamber, it is discharged from the slag outlet of the machine.
[0003] When the original slurry is a mixture of soft solids (such as colloids), although it can be centrifugally separated (stratified) from the light liquid phase in the centrifuge, the solid is soft and cannot form cakes or sediments. In fact, the spiral cannot transport the solid phase layer, and can only play a guiding or drainage role. The conventional method is to regard the solid phase as a concentrated heavy liquid phase. Using the liquid-liquid separation method, the liquid and slag ends of the centrifuge are discharged at the same time, the light liquid phase is discharged from the liquid end, and the heavy solid phase is discharged from the slag outlet of the centrifuge. However, since the concentration of the concentrated slurry cannot be controlled, when the solid phase is too concentrated, the spiral cannot transport it out, and the slag layer forms a ring weir at the slag outlet of the centrifuge, resulting in poor slag discharge or no slag discharge. On the contrary, when the solid phase is too thin, the slag outlet of the centrifuge will appear "diarrhea", and the sediment will be discharged with a large amount of liquid, while the liquid outlet will have less liquid.
[0004] Therefore, the liquid and slag discharge of the centrifuge is very unstable, which seriously affects the separation capacity and separation effect of the centrifuge. Utility Model Content
[0005] In order to solve the above technical problems, the utility model provides a horizontal spiral unloading sedimentation centrifuge, which greatly improves the sedimentation separation capacity of the centrifuge. The soft solids settled by centrifugation are directly sucked out by the skimming device, which ensures the effectiveness and stability of slag discharge, and can significantly improve the clarification and separation efficiency and separation effect of the centrifuge, especially for the concentration and separation of flocculent soft solids or colloids.
[0006] Specifically, the utility model discloses a horizontal spiral unloading sedimentation centrifuge, comprising: a feed pipe, a drum, and a screw conveyor arranged in the drum, wherein a first end cover and a second end cover are arranged at both ends of the drum, and the utility model is characterized in that the feed pipe is arranged at the first end cover of the drum, a feed channel is arranged in the drum, the feed channel connects the feed pipe and the cavity between the drum and the screw conveyor, a discharge port is arranged at the second end cover, and the discharge port is connected to a skimming device; the drum is provided with a liquid discharge device.
[0007] The benefit of adopting the above technical solution is that a feed channel is provided to connect the feed pipe so that the material to be separated can directly enter the drum. At the same time, a skimming device is provided to ensure the effectiveness and stability of slag discharge, which can significantly improve the clarification and separation efficiency and separation effect of the centrifuge, especially for the concentration and separation of flocculent soft solids or colloids.
[0008] Furthermore, the drainage device includes a drainage channel arranged in the drum, the drainage channel is arranged along the axial direction of the drum, and a drainage port is opened on the side of the drum.
[0009] The benefit of adopting the above technical solution is that a drainage channel is set to discharge the separated liquid phase through the drainage channel. The drainage channel can guide the liquid transmitted to the discharge end of the drum to the feed end for discharge. This setting can separate the slag discharge port from the drainage port to meet the usage requirements of different processing conditions.
[0010] Furthermore, the drainage device includes a drainage pipe extending into the mounting plate, and the drainage pipe is vertically arranged.
[0011] Furthermore, the depth of the drainage pipe inserted into the drum can be adjusted.
[0012] The advantage of adopting the above technical solution is that the vertically arranged drain pipe is inserted into the drum to discharge the clear liquid in the drum, and the depth of the drain pipe can be adjusted to meet the separation requirements of materials with various humidity and different density.
[0013] Furthermore, the skimming device includes a skimming tube, a discharge cavity is arranged outside the second end cover, one end of the skimming tube extends into the discharge cavity, and a solid outlet is arranged at the other end of the skimming tube.
[0014] The benefit of adopting the above technical solution is that the skimming device is provided to discharge the solid slag, thereby preventing the solid slag from accumulating and blocking the discharge port, and ensuring the stability of the slag discharge.
[0015] Furthermore, the depth of the skimmer tube extending into the discharge chamber is adjustable.
[0016] The benefit of adopting the above technical solution is that the setting of the adjustable skimmer tube can adjust the discharge speed, realizing pulse-type rapid discharge or slow discharge.
[0017] Furthermore, the drum is cylindrical.
[0018] The benefit of adopting the above technical solution is that, compared with a conical drum, a cylindrical drum can greatly increase the feed volume and transportation capacity, thereby improving the overall separation capacity of the centrifuge.
[0019] Furthermore, a spare slag discharge hopper and a liquid discharge hopper are provided at the lower side of the rotary drum, the liquid discharge hopper is provided at the lower side of the liquid discharge device, and the spare slag discharge hopper is provided at the lower side of the discharge port.
[0020] The advantage of adopting the above technical solution is that the spare slag discharge hopper is used to discharge the remaining liquid and solid inside after shutdown, and the liquid discharge hopper is used to avoid liquid splashing.
[0021] Furthermore, the second end cover is connected to a rotating main shaft, and the rotating main shaft is connected to a driving device.
[0022] The advantage of adopting the above technical solution is that the driving device drives the rotating main shaft to drive the drum to rotate to perform centrifugal operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required to be used in the embodiments or the description of the prior art will be briefly introduced below.
[0024] Figure 1 It is a schematic diagram of the centrifuge structure in the prior art
[0025] Figure 2 This is a schematic diagram of the structure of the utility model horizontal spiral unloading sedimentation centrifuge
[0026] Figure 3 This is an enlarged view of the utility model A
[0027] Figure 4 This is an enlarged view of the utility model B
[0028] Figure 5 This is a schematic diagram of the second embodiment of the utility model.
[0029] Figure 6 This is a schematic diagram of the installation structure of the skimming pipe of the utility model
[0030] Figure 7 This is a side view of the material skimming tube and the drum of the utility model.
[0031] The reference numerals in the accompanying drawings are as follows:
[0032] Feed pipe 1; drum 2; discharge channel 21; discharge port 22; discharge pipe 23; liquid phase layer 24; solid phase layer 25; screw conveyor 3; first end cover 4; second end cover 5; discharge port 51; rotating main shaft 52; feed channel 6; skimming pipe 7; discharge cavity 71; solid outlet 72; spare slag discharge hopper 73; liquid discharge hopper 74; screw 75; material distribution port 8. DETAILED DESCRIPTION
[0033] The utility model is further described in detail below in conjunction with the accompanying drawings.
[0034] like Figure 2-7 As shown, the utility model discloses a horizontal spiral unloading sedimentation centrifuge, comprising: a feed pipe 1, a drum 2, and a screw conveyor 3 arranged in the drum 2, wherein a first end cover 4 and a second end cover 5 are arranged at both ends of the drum 2, and the characteristic is that the feed pipe 1 is arranged at the first end cover 4 of the drum 2, a feed channel 6 is arranged in the drum 2, the feed channel 6 connects the feed pipe 1 and the cavity between the drum 2 and the screw conveyor 3, a discharge port 51 is arranged at the second end cover 5, and the discharge port 51 is connected to a skimming device; the drum 2 is provided with a liquid discharge device.
[0035] The benefit of adopting the above technical solution is that a feed channel 6 is provided to connect the feed pipe 1, so that the material to be separated directly enters the drum 2, and a skimming device is provided at the same time to ensure the effectiveness and stability of slag discharge, which can significantly improve the clarification and separation efficiency and separation effect of the centrifuge, especially for the concentration and separation of flocculent soft solids or colloids.
[0036] In some embodiments, the drainage device can adopt the following structural scheme, wherein the drainage device includes a drainage channel 21 arranged in the rotating drum 2, and the drainage channel 21 is arranged at the bottom of the blades of the screw conveyor 3, and does not affect the use of the screw conveyor 3. The drainage channel 21 is arranged axially along the rotating drum 2, and a drainage port 22 is opened on the side of the rotating drum 2.
[0037] The benefit of adopting the above technical solution is that a drainage channel 21 is set to discharge the separated liquid phase through the drainage channel 21. The drainage channel 21 can guide the liquid transmitted to the discharge end of the drum 2 to the feed end for discharge. This setting can separate the slag discharge port from the drainage port 22 to meet the usage requirements of different processing conditions.
[0038] In some embodiments, the drainage device can adopt the following structural scheme, which includes a drainage pipe 23 extending into the mounting plate, the drainage pipe 23 is vertically arranged, an outlet is arranged on the side of the drum 2, the drainage pipe 23 is movably fixed on the outlet, and the top extends into the interior of the drum 2 to discharge the upper layer of clarified liquid separated in the drum 2. The depth of the drainage pipe 23 inserted into the drum 2 can be adjusted, and an external thread can be arranged on the drainage pipe 23, and an internal thread can be arranged in the outlet for installation.
[0039] The advantage of adopting the above technical solution is that the vertically arranged drain pipe 23 is inserted into the drum 2 to discharge the clear liquid in the drum 2, and the depth of the drain pipe 23 can be adjusted to meet the separation requirements of materials with various humidity and different density.
[0040] In some embodiments, the skimming device can adopt the following structural scheme, the skimming device includes a skimming tube 7, a discharge cavity 71 is arranged on the outer side of the second end cover 5, one end of the skimming tube 7 extends into the discharge cavity 71, and the other end of the skimming tube 7 is arranged with a solid outlet 72. The skimming tube 7 is a bent tube, and an arc-shaped bend is arranged near the solid outlet 72. During the rotation of the drum 2, the screw conveyor 3 continuously conveys the solid-phase slag, and the solid-phase slag enters the discharge cavity 71 through the discharge port 51, and the drum 2 drives the solid-phase slag (soft solid) to rotate. At this time, since the skimming tube 7 does not rotate with the drum 2, the solid-phase slag will enter the skimming tube 7 and then be extracted by negative pressure through the solid outlet 72; the depth of the skimming tube 7 extending into the discharge cavity 71 is adjustable, and the adjustment method can be rotation adjustment or up and down movement adjustment, the purpose is to adjust the depth of the skimming tube 7 extending into the discharge cavity, a protective cover is arranged on the outer side of the drum 2, and a screw 75 ( Figure 3 The screw 75 is connected to the protective cover. By changing the position of the screw 75, the depth of the skimming tube 7 extending into the discharge chamber 71 can be changed. The rotation adjustment method ( Figure 7 (As shown by the dotted line in the figure), a locking plate can be provided to fix the skimmer tube 7 on the protective cover. When the angle of the skimmer tube 7 needs to be adjusted, the locking plate can be loosened, the skimmer tube 7 can be rotated to the required angle, and then locked.
[0041] The benefit of adopting the above technical solution is that the skimming device is used to discharge the solid slag, avoiding the accumulation of solid slag and blocking the discharge port 51, ensuring the stability of slag discharge, and the setting of the adjustable skimming pipe 7 can adjust the discharge speed to achieve pulse-type rapid discharge or slow discharge.
[0042] In some embodiments, the drum 2 may adopt the following structural scheme, wherein the drum 2 is cylindrical.
[0043] The benefit of adopting the above technical solution is that, compared with the conical drum 2, the cylindrical drum 2 can greatly increase the feed amount and transportation capacity, and improve the overall separation capacity of the centrifuge.
[0044] In some embodiments, the drum 2 may adopt the following structural scheme, wherein a spare slag hopper 73 and a liquid hopper 74 are provided at the lower side of the drum 2, the liquid hopper 74 is provided at the lower side of the liquid discharge device, and the spare slag hopper 73 is provided at the lower side of the discharge port 51.
[0045] The advantage of adopting the above technical solution is that the spare slag discharge hopper 73 is used to discharge the remaining liquid and solid inside after shutdown, and the liquid discharge hopper 74 is used to avoid liquid splashing.
[0046] Furthermore, the second end cover 5 is connected to a rotating main shaft 52 , the rotating main shaft 52 is connected to a driving device, and the rotating main shaft 52 is also connected to a differential.
[0047] The advantage of adopting the above technical solution is that the driving device drives the rotating main shaft 52 to drive the drum 2 to rotate for centrifugal operation, and the liquid phase layer 24 and the solid phase layer 25 are separated in the drum 2, and the screw conveyor 3 pushes the solid phase slag to move toward the discharge port 51.
[0048] The beneficial effects of the utility model are that the feeding structure and the discharging structure of the centrifuge are improved, a skimming device is provided, and the conical drum is cancelled and replaced by a cylindrical drum 2, which can greatly improve the sedimentation separation capacity of the centrifuge. The soft solids settled by centrifugation are directly sucked out by the skimming device, which ensures the effectiveness and stability of slag discharge, and can significantly improve the clarification separation efficiency and separation effect of the centrifuge, especially for the concentration separation of flocculent soft solids or colloids.
[0049] For ordinary technicians in this field, several modifications and improvements can be made without departing from the creative concept of the utility model, which all fall within the protection scope of the utility model.
Claims
1. A horizontal spiral unloading decanter centrifuge, comprising: A feed pipe (1), a rotating drum (2), and a screw conveyor (3) arranged in the rotating drum (2); a first end cover (4) and a second end cover (5) are arranged at both ends of the rotating drum (2); the feed pipe (1) is arranged at the first end cover (4) of the rotating drum (2); a feed channel (6) is arranged in the rotating drum (2); the feed channel (6) connects the feed pipe (1) and the cavity between the rotating drum (2) and the screw conveyor (3); a discharge port (51) is arranged at the second end cover (5), and the discharge port (51) is connected to a skimming device; the rotating drum (2) is provided with a liquid discharge device.
2. The horizontal spiral unloading decanter centrifuge according to claim 1, characterized in that: The drainage device comprises a drainage channel (21) arranged in the rotary drum (2), the drainage channel (21) being arranged along the axial direction of the rotary drum (2), and a drainage port (22) is provided on the side of the rotary drum (2).
3. The horizontal spiral unloading decanter centrifuge according to claim 1, characterized in that: The drainage device comprises a drainage pipe (23) extending into the mounting plate, and the drainage pipe (23) is arranged vertically.
4. The horizontal spiral unloading decanter centrifuge according to claim 3, characterized in that: The depth to which the drainage pipe (23) is inserted into the rotating drum (2) can be adjusted.
5. The horizontal spiral unloading decanter centrifuge according to claim 1, characterized in that: The skimming device comprises a skimming tube (7), a discharge cavity (71) is arranged outside the second end cover (5), one end of the skimming tube (7) extends into the discharge cavity (71), and the other end of the skimming tube (7) is arranged with a solid outlet (72).
6. The horizontal spiral unloading decanter centrifuge according to claim 5, characterized in that: The depth of the skimming tube (7) extending into the discharge chamber (71) is adjustable.
7. The horizontal spiral unloading decanter centrifuge according to claim 1, characterized in that: The rotating drum (2) is cylindrical.
8. The horizontal spiral unloading decanter centrifuge according to claim 6, characterized in that: A spare slag discharge hopper (73) and a liquid discharge hopper (74) are provided at the lower side of the rotary drum (2); the liquid discharge hopper (74) is provided at the lower side of the liquid discharge device, and the spare slag discharge hopper (73) is provided at the lower side of the discharge port (51).
9. The horizontal spiral unloading decanter centrifuge according to claim 5, characterized in that: The second end cover (5) is connected to a rotating main shaft (52), and the rotating main shaft (52) is connected to a driving device.