Solid-liquid separation tank for treating production wastewater during tungsten ore refining

Abstract

The invention discloses a solid-liquid separation tank for treating production wastewater during tungsten ore refining, relates to the technical field of metal wastewater treatment, and aims to treat tungsten ore wastewater. An inclined feeding pipe is arranged at the top of the separation kettle, the interior is divided into an upper filter tank and a lower separation tank by a solid filter plate, and filter holes of the filter plate realize preliminary filtration; the inner shaft extends to the bottom end of the lower separation tank; a stirring structure is arranged at the end part of the inner shaft to promote mixing of a flocculant and wastewater; the outer ring is sleeved outside the inner shaft, the upper precipitation scraper is in contact with the inner wall and the bottom wall of the lower separation tank, and the solid scraper is in contact with the surrounding ring and the solid filter plate and is respectively used for cleaning precipitation impurities and solid filter plate deposits. The speed reducing motor, the driving gear and other structures achieve linkage of stirring, scraping and other procedures, the anti-blocking plate and the inserting rod prevent filter holes from being blocked, and the sediment and solid blocking structure guarantees the sealing performance.

Description

Technical Field

[0001] The invention relates to the technical field of metal wastewater treatment, and in particular to a solid-liquid separation tank for treating production wastewater during tungsten ore refining. Background Art

[0002] Tungsten, a key strategic metal, is widely used in a wide range of fields, including aerospace, electronics, and machinery manufacturing. The tungsten ore extraction process generates large amounts of wastewater containing various heavy metal ions, suspended solids, and other hazardous substances. Direct discharge of this wastewater not only pollutes the surrounding soil, water, and ecosystem, but also results in a waste of resources.

[0003] In the current field of tungsten mine wastewater treatment, solid-liquid separation is a key pre-treatment link. Commonly used solid-liquid separation equipment mainly includes gravity sedimentation tanks, plate and frame filter presses, and centrifuges. Gravity sedimentation tanks rely on the gravity of solid particles to achieve natural sedimentation, but their treatment efficiency is low and the separation cycle is long. Although plate and frame filter presses can achieve high solid-liquid separation accuracy, the filter cloth is prone to clogging, and frequent cleaning and replacement operations lead to high equipment maintenance costs and are difficult to adapt to continuous production. Centrifuges generate centrifugal force through high-speed rotation to accelerate solid-liquid separation, but they consume huge energy and have high equipment investment costs. At the same time, when treating high-concentration wastewater, there is a problem of solid impurities adhering to the inner wall of the drum and being difficult to clean. Summary of the Invention

[0004] To solve the above problems, the present invention proposes a solid-liquid separation tank for treating production wastewater during tungsten ore refining, comprising a separation kettle, an oblique feed pipe being installed on the top of the separation kettle, a solid filter plate being fixed on the upper end of the inner wall of the separation kettle, a plurality of filter holes being penetrated through the solid filter plate, and the solid filter plate dividing the separation kettle into an upper filter tank and a lower separation tank; an inner shaft rotatably connected to the separation kettle is provided and extends to the bottom end of the lower separation tank, and a stirring structure is installed at one end of the inner shaft located in the lower separation tank; an outer ring rotatably connected to the separation kettle is provided and extends to the upper end of the separation tank, the outer ring is sleeved outside the inner shaft and is rotatably connected to the inner shaft and the solid filter plate, a U-shaped sedimentation scraper is fixed on the outer circumferential surface of the outer ring, and the two outer walls of the sedimentation scraper are respectively in contact with the inner circumferential wall and the bottom wall of the lower separation tank; a surrounding ring is fixed on the top of the solid filter plate, and an L-shaped solid scraper is fixed on the outer circumferential surface of the outer ring, and the two outer walls of the solid scraper are respectively in contact with the inner circumferential wall of the surrounding ring and the top wall of the solid filter plate.

[0005] Furthermore, an anti-clogging plate is provided below the solid filter plate, and a plurality of plug rods are fixed to the top of the anti-clogging plate corresponding to the filter holes. A kettle plate 1 is fixed to the inner wall of the separation kettle below the anti-clogging plate, and a reciprocating screw rod is rotatably connected to the top of the kettle plate. The reciprocating screw rod is threadedly connected to the anti-clogging plate. A kettle plate 2 is also fixed to the inner wall of the separation kettle below the anti-clogging plate, and a guide rod is fixed to the top of the kettle plate 2. The guide rod passes through the anti-clogging plate and is slidably connected to the anti-clogging plate. The guide rod is located between the outer wall of the surrounding ring and the inner wall of the separation kettle.

[0006] Furthermore, a reduction motor is installed on the top of the separation kettle, and the output end of the reduction motor is connected to a drive shaft. An adjustment bar with a square cross-section is fixed on the top of the drive shaft, and the outer side of the adjustment bar is slidably connected to the drive gear. The top of the inner shaft and the outer ring both extend outside the separation kettle, and the outer side of the inner shaft is fixed with an inner shaft gear, and the outer side of the outer ring is fixed with an outer ring gear. The top of the reciprocating screw is fixed with an extension rod that passes through the fixed filter plate and the separation kettle, and the extension rod is located between the outer wall of the surrounding ring and the inner wall of the separation kettle. The outer side of the extension rod is fixed with a screw gear, and the driving gear can be meshed with the inner shaft gear, outer ring gear and screw gear respectively by sliding the driving gear to different positions.

[0007] Furthermore, the separation kettle is connected to the outer wall of the lower separation tank with a drain pipe, the drain pipe is connected to the separation tank, a plug valve is connected to the drain pipe, the valve stem end of the plug valve is connected to the valve stem extension rod, the valve stem extension rod is parallel to the extension rod, and the outer side surface of the valve stem extension rod is fixed with a valve stem gear that meshes with the screw gear.

[0008] Furthermore, an electric push rod is installed on the top of the separation kettle, a joint is fixed on the top of the telescopic end of the electric push rod, a connecting ring is fixed on the top of the driving gear, a ring groove is opened on the top of the connecting ring, a sleeve is fixed on the bottom of the joint, the sleeve is sleeved outside the adjusting bar, the adjusting bar can rotate in the sleeve, the bottom of the sleeve extends into the ring groove, a retaining ring is fixed on the bottom end of the sleeve, the outer diameter of the retaining ring is larger than the outer diameter of the sleeve, the outer wall of the retaining ring is in contact with the ring groove and is rotatably connected to the ring groove, a positioning ring is welded above the retaining ring on the inner wall of the ring groove, the positioning ring blocks the retaining ring to prevent the retaining ring from falling out of the ring groove.

[0009] Furthermore, the inner shaft gear, the lead screw gear and the outer ring gear are arranged in sequence from top to bottom.

[0010] Furthermore, a stabilizing frame is fixed to the outer wall of the separation kettle, the inner shaft and the end of the extension rod are rotatably connected to the stabilizing frame, the valve stem extension rod is threadedly connected to the top of the stabilizing frame, and the outer ring is fixed with limit strips on the upper and lower sides of the top wall of the separation kettle. The limit strips are in contact with the separation kettle, and a stabilizing strip is fixed to the inner wall of the stabilizing frame, and the valve stem extension rod passes through the stabilizing strip and is rotatably connected to the stabilizing strip.

[0011] Furthermore, the stirring structure includes a plurality of hanging plates fixed to the outer side surface of the inner shaft, and the bottom of the hanging plates is rotatably connected to a plurality of rotating blades.

[0012] Furthermore, a sedimentation outlet is opened above the bottom wall of the separation kettle, and a sedimentation blocking structure is provided for blocking the sedimentation outlet. A solid outlet is opened on the separation kettle and the outer wall of the surrounding ring, and a solid blocking structure is provided for blocking the solid outlet.

[0013] Furthermore, the sedimentation outlet of the separation kettle is provided with an internal thread, and a sedimentation sealing groove is provided on the outer wall of the separation kettle at the outer edge of the sedimentation outlet. The sedimentation sealing structure includes a sedimentation plug, a sedimentation screw is fixed at one end of the sedimentation plug, and a sedimentation sealing ring is fixed at the end of the sedimentation plug on the outside of the sedimentation screw; the solid outlet of the separation kettle is provided with an internal thread, and a solid sealing groove is provided on the outer edge of the solid outlet around the outer wall of the ring. The solid sealing structure includes a solid plug, a solid screw is fixed at one end of the solid plug, an inner extension head is fixed at the end of the solid screw, and a solid sealing ring is fixed on the outer side of the inner extension head.

[0014] The beneficial effects of the present invention are as follows: 1. The stirring structure on the inner shaft, including the hanging plate and rotating blades, ensures thorough mixing of the flocculant and wastewater. The flocculant is introduced directly into the lower separation tank through the gap between the outer ring and the inner shaft. Under the action of agitation, it rapidly diffuses throughout the wastewater, agglomerating fine solid particles into larger ones. The design of the settling scraper and solid scraper promptly removes settled solid impurities and those accumulated on the solid filter plates to a designated location to meet subsequent treatment requirements.

[0015] 2. By setting up anti-clogging plates and insert rods, the filter holes of the solid filter plate can be cleaned promptly and effectively. When the filter holes show signs of clogging, the anti-clogging plates move under the drive of the reciprocating screw, and the insert rods will be inserted into the filter holes to push out the solid particles blocked in the filter holes.

[0016] 3. Through the design of the drive gear, the operator can easily switch the meshing of the drive gear with different gears by simply controlling the extension and retraction of the electric push rod, thereby achieving flexible conversion between different processes such as stirring and sedimentation, draining and anti-clogging. The difficulty of operation is reduced. At the same time, the conversion between each process is in line with the processing sequence, which improves the efficiency of the entire process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the internal structure of the present invention; Figure 2 for Figure 1 Schematic diagram of the connection structure of the medium reduction motor; Figure 3 It is a partial rear view structural schematic diagram of the present invention; Figure 4 Schematic diagram of the solid plugging structure of the present invention; Figure 5 Schematic diagram of the structure of the precipitation plugging structure of the present invention; Figure 6 This is a schematic structural diagram of Example 4 of the present invention.

[0018] The accompanying drawings are as follows: 1. Separation kettle; 2. Oblique feed pipe; 3. Solid filter plate; 41. Anti-clogging plate; 42. Insert rod; 43. Kettle plate one; 44. Reciprocating screw; 45. Kettle plate two; 46. Guide rod; 51. Reducer motor; 52. Drive shaft; 53. Adjustment bar; 54. Drive gear; 55. Inner shaft gear; 56. Outer ring gear; 57. Extension rod; 58. Screw gear; 59. Valve stem gear; 61. Electric push rod; 62. Connector; 63. Connecting ring; 64. Sleeve; 65. Card Ring; 66, positioning ring; 71, hanging plate; 72, rotating fan blade; 81, sedimentation plug; 82, sedimentation screw; 83, sedimentation sealing ring; 91, solid plug; 92, solid screw; 93, inner extension head; 94, solid sealing ring; 10, inner shaft; 11, outer ring; 12, sedimentation scraper; 13, surrounding ring; 14, solid scraper; 15, drain pipe; 16, plug valve; 17, valve stem extension rod; 18, stabilizing frame; 19, limit bar; 20, stabilizing bar; 21, sedimentation outlet; 22, solid outlet. DETAILED DESCRIPTION

[0019] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0021] The present invention will be further described below with reference to the accompanying drawings: Example 1 A solid-liquid separation tank for treating wastewater produced during tungsten ore refining, such as Figure 1As shown, this embodiment discloses the basic structure of this scheme, including a separation kettle 1, an oblique feed pipe 2 is installed on the top of the separation kettle 1, a solid filter plate 3 is fixed to the upper end of the inner wall of the separation kettle 1, and a plurality of filter holes are opened through the solid filter plate 3. The solid filter plate 3 separates the separation kettle 1 into an upper filter pool and a lower separation pool; an inner shaft 10 rotatably connected to the separation kettle 1 is provided and extends to the bottom end of the lower separation pool, and a stirring structure is installed at one end of the inner shaft 10 in the lower separation pool; an outer shaft 10 rotatably connected to the separation kettle 1 is provided. Ring 11 extends to the upper end of the separation tank. Outer ring 11 is sleeved around inner shaft 10 and rotatably connected to it and the solid filter plate 3. A U-shaped settling scraper 12 is fixed to the outer circumference of outer ring 11, with its outer walls contacting the inner circumferential wall and bottom wall of the lower separation tank. A surrounding ring 13 is fixed to the top of the solid filter plate 3. An L-shaped solid scraper 14 is fixed to the outer circumference of outer ring 11, with its outer walls contacting the inner circumferential wall of surrounding ring 13 and the top wall of the solid filter plate 3. Flocculant is added to the gap between outer ring 11 and inner shaft 10, allowing it to flow directly into the lower separation tank.

[0022] like Figure 1 As shown, in this embodiment, a structure for driving the inner shaft 10 and the outer ring 11 to rotate is further disclosed. A reduction motor 51 is installed on the top of the separation kettle 1. The output end of the reduction motor 51 is connected to a drive shaft 52. An adjustment bar 53 with a square cross-section is fixed to the top of the drive shaft 52. The outer side of the adjustment bar 53 is slidably connected to a drive gear 54. The tops of the inner shaft 10 and the outer ring 11 both extend to the outside of the separation kettle 1. An inner shaft gear 55 is fixed to the outer side of the inner shaft 10, and an outer ring gear 56 is fixed to the outer side of the outer ring 11. By sliding the drive gear 54 to different positions, the drive gear 54 can be engaged with the inner shaft gear 55 and the outer ring gear 56 respectively. The stirring structure in this embodiment is configured to include a plurality of hanging plates 71 fixed to the outer side of the inner shaft 10. The bottom of the hanging plate 71 is rotatably connected to a plurality of rotating fan blades 72. Other types of stirring structures can be provided, such as only hanging plates 71, or stirring rods of various shapes.

[0023] Example 2 On the basis of the above embodiment 1, this embodiment further discloses a structure for preventing the filter holes of the solid filter plate 3 from being blocked, and preventing the solid materials from being stuck in the filter holes again during the recovery of the solid materials. Figure 1As shown, an anti-clogging plate 41 is provided below the solid filter plate 3. Multiple insertion rods 42 are fixed to the top of the anti-clogging plate 41 corresponding to the filter holes. A first plate 43 is fixed to the inner wall of the separation kettle 1 below the anti-clogging plate 41. A reciprocating screw 44 is rotatably connected to the top of the plate. The reciprocating screw 44 is threadedly connected to the anti-clogging plate 41. A second plate 45 is also fixed to the inner wall of the separation kettle 1 below the anti-clogging plate 41. A guide rod 46 is fixed to the top of the second plate 45. The guide rod 46 passes through the anti-clogging plate 41 and is slidably connected to the anti-clogging plate 41. The guide rod 46 is located between the outer wall of the surrounding ring 13 and the inner wall of the separation kettle 1. When the anti-clogging plate 41 moves to the top of the reciprocating screw 44, the tops of the insertion rods 42 are flush with the top of the fixed filter plate.

[0024] like Figure 1 As shown, this embodiment further discloses the following structure, so that the anti-clogging structure can be linked with the above-mentioned stirring and scraping drive structure. An extension rod 57 passing through the fixed filter plate and the separation kettle 1 is fixed to the top of the reciprocating screw 44. The extension rod 57 is located between the outer wall of the surrounding ring 13 and the inner wall of the separation kettle 1. A screw gear 58 is fixed to the outer side of the extension rod 57. By sliding the drive gear 54 to different positions, the drive gear 54 can be engaged with the inner shaft gear 55, the outer ring gear 56 and the screw gear 58 respectively.

[0025] Example 3 On the basis of the above embodiment 2, this embodiment further discloses a structure for facilitating water discharge after the sedimentation of the lower separation tank is completed, and the water discharge structure is linked with the above stirring, scraping and anti-blocking drive structures, such as Figure 1 As shown, the separation kettle 1 is connected to the outer wall of the lower separation tank with a drain pipe 15, the drain pipe 15 is communicated with the separation tank, the drain pipe 15 is connected to a plug valve 16, the valve stem end of the plug valve 16 is connected to a valve stem extension rod 17, the valve stem extension rod 17 is parallel to the extension rod 57, and the outer side surface of the valve stem extension rod 57 is fixed with a valve stem gear 59 that meshes with the screw gear 58.

[0026] like Figure 1 As shown, in this embodiment, a stabilizing frame 18 is fixed to the outer wall of the separation vessel 1. The ends of the inner shaft 10 and the extension rod 57 are both rotatably connected to the stabilizing frame 18. The valve stem extension rod 17 is threadedly connected to the top of the stabilizing frame 18. The outer ring 11 is fixed to the upper and lower sides of the top wall of the separation vessel 1. The limit bars 19 are in contact with the separation vessel 1. Stabilizing bars 20 are fixed to the inner wall of the stabilizing frame 18. The valve stem extension rod 17 passes through the stabilizing bars 20 and is rotatably connected to the stabilizing bars 20. The inner shaft gear 55, the screw gear 58, and the outer ring gear 56 are arranged sequentially from top to bottom. This facilitates the sequential adjustment of the stirring and settling process, the water discharge process, the anti-clogging process, and the material recovery process to meet the processing sequence.

[0027] Example 4 On the basis of the above embodiment 3, this embodiment further discloses a structure for driving the driving gear 54 to move, such as Figure 2 and Figure 3 As shown, an electric push rod 61 is installed on the top of the separation kettle 1, and a joint 62 is fixed on the top of the telescopic end of the electric push rod 61. A connecting ring 63 is fixed on the top of the driving gear 54. A ring groove is provided on the top of the connecting ring 63. A sleeve 64 is fixed to the bottom of the joint 62. The sleeve 64 is sleeved on the outside of the adjusting bar 53. The adjusting bar 53 can rotate in the sleeve 64. The bottom of the sleeve 64 extends into the ring groove. A snap ring 65 is fixed to the bottom end of the sleeve 64. The outer diameter of the snap ring 65 is larger than the outer diameter of the sleeve 64. The outer wall of the snap ring 65 is in contact with the ring groove and is rotatably connected to the ring groove. A positioning ring 66 is welded above the snap ring 65 on the inner wall of the ring groove. The positioning ring 66 blocks the snap ring 65 to prevent the snap ring 65 from falling out of the ring groove.

[0028] Regarding the electric push rod 61 in this embodiment, other methods can be used to replace it, such as using an ordinary push rod and pushing it manually. Please refer to the attached manual for details. Figure 6 , discloses a common push rod method, an outer plate extending to the outer wall of the separation kettle 1 is connected at the joint 62, a through screw hole can be opened on the outer plate, and three corresponding screw grooves are opened on the separation kettle 1. The distance between the three adjacent screw grooves is the distance between the inner shaft gear 55, the outer ring gear 56 and the screw gear 58. The position of the outer plate and the joint 62 is fixed by screwing in the screw.

[0029] Example 5 On the basis of the above embodiment 3, this embodiment further discloses a blocking method, such as Figure 4 、 Figure 5 and Figure 6 As shown, a precipitation outlet 21 is provided above the bottom wall of the separation kettle 1, and a precipitation sealing structure is provided for sealing the precipitation outlet 21. A solid outlet 22 is provided on the outer wall of the separation kettle 1 and the surrounding ring 13, and a solid sealing structure is provided for sealing the solid outlet 22. The precipitation outlet 21 of the separation kettle 1 is provided with an internal thread, and a precipitation sealing groove is provided on the outer wall of the separation kettle 1 at the outer edge of the precipitation outlet 21. The precipitation sealing structure includes a precipitation plug 81, and a precipitation screw 82 is fixed at one end of the precipitation plug 81, and a precipitation sealing ring 83 is fixed at the outer side of the precipitation screw 82 at the end of the precipitation plug 81; the solid outlet 22 of the separation kettle 1 is provided with an internal thread, and a solid sealing groove is provided on the outer wall of the surrounding ring 13 at the outer edge of the solid outlet 22. The solid sealing structure includes a solid plug 91, and a solid screw 92 is fixed at one end of the solid plug 91, an inner extension head 93 is fixed at the end of the solid screw 92, and a solid sealing ring 94 is fixed on the outer side of the inner extension head 93.

[0030] The sealing method disclosed in this embodiment can also be replaced by other methods, such as opening a square outlet above the bottom wall of the separation kettle 1, the separation kettle 1 and the outer wall of the surrounding ring 13, with the side wall of the outlet gradually inclined inward, and then inserted by a rubber square plate, and then sealed by a sealing ring.

[0031] The working principle of the present invention is as follows: Wastewater feeding and preliminary filtration: Tungsten ore production wastewater containing suspended solids flows through the oblique feed pipe 2 into the upper filter tank of the separation kettle 1. Under the action of gravity, the liquid portion of the wastewater flows downward through the filter holes on the solid filter plate 3 into the lower separation tank, while the suspended solids are intercepted above the solid filter plate 3, completing the preliminary solid-liquid separation.

[0032] Agitation and Sedimentation: When solid-liquid separation of tungsten ore refining wastewater is required, flocculant is added to the gap between inner shaft 10 and outer ring 11 and introduced directly into the lower separation tank. The electric push rod 61 is activated, sliding the drive gear 54 until it engages with the inner shaft gear 55. At this point, the reduction motor 51 is activated, driving the drive gear 54 via the drive shaft 52 and adjustment bar 53. The drive gear 54 in turn drives the inner shaft gear 55, which in turn rotates the inner shaft 10. This in turn drives the hanging plate 71 and the rotating blades 72 (which rotate with the water flow), stirring the wastewater in the lower separation tank. This agitation thoroughly mixes the flocculant with the wastewater, causing fine solid particles in the wastewater to agglomerate into larger particles, accelerating sedimentation.

[0033] Draining Clear Water: After sedimentation is complete, the electric push rod 61 drives the drive gear 54 upward, meshing it with the screw gear 58. The reduction motor 51 rotates the screw gear 58 and the reciprocating screw 44. Because the anti-clogging plate 41 is connected to the reciprocating screw 44 and can only move in a straight line, restricted by the guide rod 46, the rotation of the reciprocating screw 44 drives the anti-clogging plate 41 in an up-and-down reciprocating motion. As the anti-clogging plate 41 moves upward, the plunger 42 penetrates the filter holes of the solid filter plate 3, clearing any obstructions and ensuring unobstructed flow. When the anti-clogging plate 41 reaches the top of the reciprocating screw 44, the top of the plunger 42 is flush with the top of the fixed filter plate. Simultaneously, as the reciprocating screw 44 rotates, the valve stem gear 59, meshing with the screw gear 58, rotates the valve stem extension rod 17 and the valve stem of the stopcock 16, opening the stopcock 16 and allowing the treated liquid in the lower separation tank to be discharged through the drain pipe 15.

[0034] Recycling materials: After the drainage is completed, the electric push rod 61 drives the driving gear 54 to slide downward again so that it meshes with the outer ring gear 56. The reduction motor 51 drives the outer ring gear 56 and the outer ring 11 to rotate. When the outer ring 11 rotates, the solid scraper 14 contacts the inner circumferential wall of the surrounding ring 13 and the top wall of the solid filter plate 3, and scrapes the solid impurities retained on the solid filter plate 3 toward the solid outlet 22. At the same time, the sedimentation scraper 12 scrapes the sediment at the bottom of the lower separation tank toward the sedimentation outlet 21. Open the sedimentation sealing structure and the solid sealing structure, and hook out the materials from the sedimentation outlet 21 and the solid outlet 22 respectively. After the recovery is completed, screw in the sedimentation sealing structure and the solid sealing structure to prepare for the next round of solid-liquid separation.

[0035] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A solid-liquid separation tank for treating wastewater produced during tungsten ore refining, comprising a separation kettle (1), the top of which is provided with an oblique feed pipe (2), characterized in that: A solid filter plate (3) is fixed to the upper end of the inner wall of the separation kettle (1), and a plurality of filter holes are formed through the solid filter plate (3). The solid filter plate (3) separates the separation kettle (1) into an upper filter pool and a lower separation pool. An inner shaft (10) is provided which is rotatably connected to the separation kettle (1) and extends to the bottom end of the lower separation pool. A stirring structure is installed at one end of the inner shaft (10) in the lower separation pool. An outer ring (11) is provided which is rotatably connected to the separation kettle (1) and extends to the upper end of the separation pool. The outer ring (11) is sleeved on the inner shaft (10). The outer surface of the shaft (10) is rotatably connected to the inner shaft (10) and the solid filter plate (3); a U-shaped sedimentation scraper (12) is fixed to the outer peripheral surface of the outer ring (11); and the two outer walls of the sedimentation scraper (12) are in contact with the inner peripheral wall and the bottom wall of the lower separation tank respectively; a surrounding ring (13) is fixed to the top of the solid filter plate (3); and an L-shaped solid scraper (14) is fixed to the outer peripheral surface of the outer ring (11); and the two outer walls of the solid scraper (14) are in contact with the inner peripheral wall of the surrounding ring (13) and the top wall of the solid filter plate (3) respectively.

2. The solid-liquid separation tank for treating production wastewater during tungsten ore refining according to claim 1, characterized in that: An anti-clogging plate (41) is provided below the solid filter plate (3), and a plurality of plug rods (42) are fixed to the top of the anti-clogging plate (41) corresponding to the filter holes. A first kettle plate (43) is fixed to the inner wall of the separation kettle (1) below the anti-clogging plate (41), and a reciprocating screw rod (44) is rotatably connected to the top of the kettle plate. The reciprocating screw rod (44) is threadedly connected to the anti-clogging plate (41). A second kettle plate (45) is also fixed to the inner wall of the separation kettle (1) below the anti-clogging plate (41), and a guide rod (46) is fixed to the top of the second kettle plate (45). The guide rod (46) passes through the anti-clogging plate (41) and is slidably connected to the anti-clogging plate (41). The guide rod (46) is located between the outer wall of the surrounding ring (13) and the inner wall of the separation kettle (1).

3. The solid-liquid separation tank for treating production wastewater during tungsten ore refining according to claim 2, characterized in that: A reduction motor (51) is installed on the top of the separation kettle (1), and the output end of the reduction motor (51) is connected to a drive shaft (52). An adjustment bar (53) with a square cross section is fixed on the top of the drive shaft (52), and the outer side surface of the adjustment bar (53) is slidably connected to a drive gear (54). The tops of the inner shaft (10) and the outer ring (11) extend to the outside of the separation kettle (1). An inner shaft gear (55) is fixed on the outer side surface of the inner shaft (10), and an outer ring gear (56) is fixed on the outer side surface of the outer ring (11). An extension rod (57) passing through the fixed filter plate and the separation kettle (1) is fixed on the top of the reciprocating screw (44). The extension rod (57) is located between the outer wall of the surrounding ring (13) and the inner wall of the separation kettle (1). A screw gear (58) is fixed on the outer side surface of the extension rod (57). By sliding the drive gear (54) to different positions, the drive gear (54) can be respectively engaged with the inner shaft gear (55), the outer ring gear (56) and the screw gear (58).

4. The solid-liquid separation tank for treating production wastewater during tungsten ore refining according to claim 3, characterized in that: The separation kettle (1) is connected to the outer wall of the lower separation tank with a drain pipe (15), the drain pipe (15) is communicated with the separation tank, a plug valve (16) is connected to the drain pipe (15), the valve stem end of the plug valve (16) is connected to a valve stem extension rod (17), the valve stem extension rod (17) is parallel to the extension rod (57), and a valve stem gear (59) meshing with the screw gear (58) is fixed to the outer side surface of the valve stem extension rod (57).

5. The solid-liquid separation tank for treating production wastewater during tungsten ore refining according to claim 3, characterized in that: An electric push rod (61) is installed on the top of the separation kettle (1), and a joint (62) is fixed on the top of the telescopic end of the electric push rod (61). A connecting ring (63) is fixed on the top of the driving gear (54), and a ring groove is provided on the top of the connecting ring (63). A sleeve (64) is fixed on the bottom of the joint (62). The sleeve (64) is sleeved outside the adjustment bar (53), and the adjustment bar (53) can rotate in the sleeve (64). The bottom of the sleeve (64) extends into the ring groove. A snap ring (65) is fixed on the bottom end of the sleeve (64). The outer diameter of the snap ring (65) is larger than the outer diameter of the sleeve (64). The outer wall of the snap ring (65) contacts the ring groove and is rotatably connected to the ring groove. A positioning ring (66) is welded on the inner wall of the ring groove above the snap ring (65). The positioning ring (66) blocks the snap ring (65) to prevent the snap ring (65) from escaping from the ring groove.

6. The solid-liquid separation tank for treating production wastewater during tungsten ore refining according to claim 3, characterized in that: The inner shaft gear (55), the screw gear (58) and the outer ring gear (56) are arranged in sequence from top to bottom.

7. The solid-liquid separation tank for treating production wastewater during tungsten ore refining according to claim 4, characterized in that: A stabilizing frame (18) is fixed to the outer wall of the separation kettle (1), the ends of the inner shaft (10) and the extension rod (57) are rotatably connected to the stabilizing frame (18), the valve stem extension rod (17) is threadedly connected to the top of the stabilizing frame (18), the outer ring (11) is fixed with limiting strips (19) on the upper and lower sides of the top wall of the separation kettle (1), the limiting strips (19) are in contact with the separation kettle (1), a stabilizing strip (20) is fixed to the inner wall of the stabilizing frame (18), and the valve stem extension rod (17) passes through the stabilizing strip (20) and is rotatably connected to the stabilizing strip (20).

8. The solid-liquid separation tank for treating production wastewater during tungsten ore refining according to claim 1, characterized in that: The stirring structure comprises a plurality of hanging plates (71) fixed to the outer side surface of the inner shaft (10), and the bottom of the hanging plates (71) is rotatably connected to a plurality of rotating blades (72).

9. The solid-liquid separation tank for treating production wastewater during tungsten ore refining according to claim 1, characterized in that: A sedimentation outlet (21) is provided above the bottom wall of the separation kettle (1), and a sedimentation blocking structure is provided for blocking the sedimentation outlet (21). A solid outlet (22) is provided on the outer wall of the separation kettle (1) and the surrounding ring (13), and a solid blocking structure is provided for blocking the solid outlet (22).

10. The solid-liquid separation tank for treating production wastewater during tungsten ore refining according to claim 9, characterized in that: The sedimentation outlet (21) of the separation kettle (1) is provided with an internal thread, and a sedimentation sealing groove is provided on the outer wall of the separation kettle (1) at the outer edge of the sedimentation outlet (21). The sedimentation sealing structure includes a sedimentation plug (81), a sedimentation screw (82) is fixed at one end of the sedimentation plug (81), and a sedimentation sealing ring (83) is fixed at the end of the sedimentation plug (81) on the outer side of the sedimentation screw (82); the solid outlet (22) of the separation kettle (1) is provided with an internal thread, and a solid sealing groove is provided on the outer wall of the surrounding ring (13) at the outer edge of the solid outlet (22). The solid sealing structure includes a solid plug (91), a solid screw (92) is fixed at one end of the solid plug (91), an inner extension head (93) is fixed at the end of the solid screw (92), and a solid sealing ring (94) is fixed on the outer side of the inner extension head (93).

Images