Harrow frame capable of improving mixing stability for thickener

Abstract

The invention relates to the technical field of thickeners, and particularly discloses a thickener rake frame capable of improving mixing stability, the thickener rake frame comprises a precipitation bin and a rake frame arm, a mounting frame is fixedly mounted at the top end of the precipitation bin, a driving motor is fixedly mounted in the middle of the mounting frame, and the output end of the driving motor is fixedly connected with a driving shaft; the bottom end of the driving shaft is fixedly connected with a stabilizing column located in the discharging bin, the periphery of the bottom end of the driving shaft is fixedly connected with four obliquely-arranged rake frame arms, a plurality of evenly-arranged fixing bins are fixedly installed at the bottom end of each rake frame arm, a plurality of storage bins are formed in one side of the inner wall of each fixing bin, and horizontal grooves are symmetrically formed in the opposite faces of the inner walls of the fixing bins. The tail end of the horizontal groove is provided with an arc-shaped groove, the bottom end of the arc-shaped groove is provided with an inclined groove, and one side of the fixed bin is provided with a scraper mechanism. The position and shape of the scraper blade are changed, so that the effective use area of the scraper blade is expanded, sediments can be effectively stirred before and after the rake is lifted, and the overall rotation stability of the rake frame arm is prevented from being influenced.

Description

TECHNICAL FIELD

[0001] The present application relates to the thickener technical field, especially to a rake frame capable of improving mixing stability for thickener. BACKGROUND

[0002] At present, many ore dressing systems are provided with thickeners, which are generally used for the concentration and purification of solid slurry in the industries of coal, chemical industry, building materials and water and sewage treatment.

[0003] The thickener rotates slowly through the rake arm at the bottom of the pool to collect the solid particles settled in each area of the thickener pool bottom, so as to provide space for the new solid particles continuously settled from the top, forming a continuous settling process. However, in actual use, due to the change of the solid particle concentration in the thick slurry and the difference in size and shape of the particles, the resistance of the settled sediment to the rake arm and the scraper is different, which is easy to cause uneven resistance of the scraper at different positions and uneven stress of the whole rake arm. The traditional scraper does not have a buffering function and is not convenient for balancing the resistance, which may cause the rake to be pressed and affect normal production. In addition, with the accumulation of the sediment, the traditional rake scraper lacks agitation for the sediment at the bottom of the sedimentation tank after the rake is lifted, which is easy to cause the solidification of the bottom sediment and finally affect the discharge of the sediment. SUMMARY

[0004] The present application aims to solve the problems in the prior art and provides a rake frame capable of improving mixing stability for thickener.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0006] A rake frame capable of improving mixing stability for thickener, comprising a sedimentation bin and a rake arm, wherein the bottom end of the sedimentation bin is provided with a conical discharge bin, the top end of the sedimentation bin is fixedly installed with a mounting frame, the mounting frame is fixedly installed with a driving motor at the middle part, the output end of the driving motor is fixedly connected with a driving shaft, the bottom end of the driving shaft is fixedly connected with a stabilizing column located in the discharge bin, the bottom end of the driving shaft is fixedly connected with four rake arms arranged obliquely, and the bottom end of each rake arm is fixedly installed with a plurality of fixed bins arranged uniformly.

[0007] The fixed block is slidably connected with the two horizontal grooves, the scraper is an irregular structure with one vertical side and multiple slope structures on the other side, the fixed bin is matched with the scraper, a rotating shaft is rotatably connected in the fixed bin, a driven gear is fixedly connected at both ends of the rotating shaft, and a plurality of sliding grooves are formed in the rotating shaft.

[0008] Preferably, a feeding bin is fixedly arranged at the bottom center of the mounting frame, the feeding bin is rotatably connected with the top of the driving shaft, and a feeding pipe is fixedly connected with one side of the feeding bin.

[0009] Preferably, a plurality of telescopic sleeves are rotatably connected with one side of the fixed bin close to the bottom of the scraper, the sleeves are rotatably connected with the inner wall of the fixed bin at the ends, and an embedded groove is formed in the inner wall of the fixed bin in a position corresponding to the sleeve.

[0010] Preferably, a driving gear is engaged with one side of the driven gear, first motors are arranged on both sides of the fixed bin, and the output end of the first motor is fixedly connected with the driving gear.

[0011] Preferably, a second motor box is fixedly connected with the rotating shaft on one side of the sliding groove, a second motor is arranged in the second motor box, a first screw rod is movably connected with the output shaft of the second motor through a cross fixed block, a second screw rod is rotatably connected with the other side of the sliding groove, and the first screw rod and the second screw rod are respectively in threaded connection with the two sliding blocks.

[0012] Preferably, four sliding rods are fixedly connected with the end of the first screw rod, four insertion grooves are formed in the outer wall of the end of the second screw rod close to the first screw rod, and the sliding rods are slidably connected with the insertion grooves.

[0013] Preferably, a central hole is formed in the side wall of the end of the second screw rod close to the first screw rod, a tension spring is fixedly connected with the side wall of the end of the first screw rod close to the second screw rod, and the end of the tension spring is fixedly connected with the side wall of the end of the central hole.

[0014] Preferably, four trapezoidal scraping frames are fixedly connected with the side wall of the stabilizing column, receiving grooves are formed in the oblique edge and the two horizontal edges of the scraping frame, an extension frame identical in shape with the scraping frame is slidably connected in the receiving groove, wedge-shaped blocks penetrating the stabilizing column are fixedly connected with the horizontal edge ends of the top and bottom of the extension frame, springs are fixedly connected with one side of the horizontal edge of the top and bottom of the extension frame, and the ends of the two springs are respectively fixedly connected with the side wall of the clamping block at the top and bottom of the receiving groove.

[0015] Preferably, the bottom end of the discharge bin is fixedly connected with a vertical fixed shaft, the top of the fixed shaft penetrates into the stabilizing column, the top and bottom sidewalls of the fixed shaft are fixedly connected with four wedge-shaped fixed blocks respectively abutting against four wedge-shaped blocks at the ends of the four extension frames, and four pressure sensors are fixedly installed in the middle of the stabilizing column and abut against the sidewalls of the fixed shaft.

[0016] Compared with the prior art, the present application has the following advantages:

[0017] The scraper mechanism is arranged, the rake frame arm stirs the thick slurry at the bottom of the sedimentation bin through the scraper installed on the fixed bin, the scraper is connected with the fixed bin through the fixing block and the plurality of connecting rods, the scraper combined with the fixed bin with the multi-section slope structure can change the position and shape, before the rake is lifted, the scraper is located at the top of the fixed bin, after the rake is lifted, the height of the fixed bin is increased, the scraper is rotated through the arc-shaped slot to lower the position of the scraper, the scraper can still stir the sediment at the bottom of the sedimentation bin after the rake is lifted to prevent solidification and normal unloading problem, the effective use area of the scraper is widened through the lowering of the height position of the scraper, the sediment can be effectively stirred before and after the rake is lifted, the uneven force on the scraper at different positions is prevented, and the rotation stability of the rake frame arm as a whole is affected.

[0018] The sliding block, the first screw rod and the second screw rod are arranged, the first screw rod and the second screw rod can rotate coaxially through the connection of the insertion slot and the sliding strip, and can also slide towards or away from each other, so that the subsequent buffering effect is facilitated, when the scraper is located in the horizontal slot or the inclined slot during normal use, the fixing block is still away from the end of the fixed bin on one side, as the thick slurry injection amount and the sedimentation time increase, the sediment at the bottom of the sedimentation bin gradually increases, the scraper first pushes the sediment, the scraper is pushed in the reverse direction through the fixing block to move towards the end of the horizontal slot or the inclined slot under the reaction force of the sediment, then the two sliding blocks on both sides of the same sliding slot are pushed to slide in opposite directions through the rotation of the connecting rod, the first screw rod and the second screw rod slide in opposite directions during the sliding, and the sliding strip slides along the insertion slot to stretch the tension spring, at this time, the scraper is buffered by the sediment through the action force of the plurality of tension springs, since a plurality of scrapers are arranged on the rake frame arm, the action force on each scraper is not completely uniform, therefore, each scraper is in two different states of active buffering and fixed at the same time, and then the phenomenon of uneven force at different positions is relieved, so that the four rake frame arms are uniformly stressed and more stable.

[0019] The stable column can be used as the mounting part of the scraper frame, and is connected with the driving shaft and the discharge bin, so that when the driving shaft rotates, the driving shaft and the four rake frame arms are more stable through the movable connection of the stable column and the fixed shaft, the possibility of deviation of the driving shaft due to uneven stress is effectively reduced, the scraper frame is driven by the stable column to stir the precipitate in the discharge bin when the driving shaft rotates, after the rake is lifted, the driving shaft and the stable column are lifted, the scraper frame and the extension frame are lifted, at this time, the wedge-shaped block is lifted and pushed by the wedge-shaped fixed block to slide away from the fixed shaft, that is, the spring is compressed and the extension frame slides out of the storage slot, so that the four scraper frames are expanded through the extension frame after the rake is lifted and can still stir the side wall of the discharge bin, preventing the discharge bin outlet from being blocked, preventing the problem of uneven force on the scraper frame caused by the blockage of the discharge bin, further improving the overall stability of the driving shaft, the rake frame arm and the stable column, and the discharge bin can smoothly discharge the precipitate after the precipitation is completed. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A whole structure schematic diagram of the rake frame for the thickener with improved mixing stability is provided.

[0021] Figure 2 A discharge bin structure schematic diagram of the rake frame for the thickener with improved mixing stability is provided.

[0022] Figure 3 A rake frame arm structure schematic diagram of the rake frame for the thickener with improved mixing stability is provided.

[0023] Figure 4 A stable column structure schematic diagram of the rake frame for the thickener with improved mixing stability is provided.

[0024] Figure 5 A scraper frame and wedge-shaped block structure schematic diagram of the rake frame for the thickener with improved mixing stability is provided.

[0025] Figure 6 A fixed shaft structure schematic diagram of the rake frame for the thickener with improved mixing stability is provided.

[0026] Figure 7 A storage slot structure schematic diagram of the rake frame for the thickener with improved mixing stability is provided.

[0027] Figure 8 An extension frame structure schematic diagram of the rake frame for the thickener with improved mixing stability is provided.

[0028] Figure 9A fixed bin structure diagram of a rake frame for a thickener capable of improving mixing stability is provided in the present application.

[0029] Figure 10 An arc-shaped groove structure diagram of a rake frame for a thickener capable of improving mixing stability is provided in the present application.

[0030] Figure 11 A scraper structure diagram of a rake frame for a thickener capable of improving mixing stability is provided in the present application.

[0031] Figure 12 A Figure 11 A region structure enlarged view at A in the present application.

[0032] Figure 13 An explosion view of a rotating shaft and a sliding block structure of a rake frame for a thickener capable of improving mixing stability is provided in the present application.

[0033] Figure 14 An explosion view of a first screw rod and a second screw rod structure of a rake frame for a thickener capable of improving mixing stability is provided in the present application.

[0034] Figure 15 A scraper unfolded state diagram of a rake frame for a thickener capable of improving mixing stability is provided in the present application.

[0035] In the figure: 1, a sedimentation bin; 2, a discharge bin; 3, a mounting frame; 4, a driving motor; 5, a feeding bin; 6, a driving shaft; 7, a stabilizing column; 8, a rake frame arm; 9, a fixed bin; 91, a storage bin; 10, a horizontal groove; 11, an arc-shaped groove; 12, an inclined groove; 13, a scraper mechanism; 14, a scraper; 15, a fixed block; 16, a sleeve; 17, a rotating shaft; 18, a driven gear; 19, a first motor; 20, a sliding groove; 21, a sliding block; 22, a second motor box; 23, a connecting rod; 24, a ball head; 25, a first screw rod; 26, a second screw rod; 27, a cross-shaped fixed block; 28, a tension spring; 29, a sliding bar; 30, a slot; 31, a center hole; 32, a scraper frame; 33, a storage groove; 34, an extension frame; 35, a spring; 36, a wedge-shaped block; 37, a fixed shaft; 38, a wedge-shaped fixed block; 39, a pressure sensor. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.

[0037] Reference Figures 1-15The application discloses a rake frame for a thickener capable of improving mixing stability, which comprises a sedimentation bin 1 and rake arms 8. A conical discharge bin 2 is arranged at the bottom center of the sedimentation bin 1. An installation frame 3 is fixedly installed at the top end of the sedimentation bin 1. A driving motor 4 is fixedly installed at the middle part of the installation frame 3. An output end of the driving motor 4 is fixedly connected with a driving shaft 6. A stabilizing column 7 is fixedly connected with the bottom end of the driving shaft 6 and located in the discharge bin 2. Four rake arms 8 are fixedly connected with the bottom end of the driving shaft 6 in a tilted manner. A plurality of fixed bins 9 are fixedly installed at the bottom end of each rake arm 8 in a uniform manner. A plurality of storage bins 91 are arranged on one side of the inner wall of each fixed bin 9. Horizontal grooves 10 are symmetrically arranged on the opposite sides of the inner wall of each fixed bin 9. An arc-shaped groove 11 is arranged at the end of each horizontal groove 10. An inclined groove 12 is arranged at the bottom end of each arc-shaped groove 11. A scraper mechanism 13 comprising a scraper 14 is arranged on one side of each fixed bin 9.

[0038] The fixed block 15 is fixedly connected on both sides of the scraper 14 and is in sliding connection with the two horizontal grooves 10. The scraper 14 has an irregular structure with one vertical side and a plurality of slope structures on the other side. The fixed bin 9 is matched with the scraper 14. The fixed bin 9 is internally rotatably connected with the rotating shaft 17. The rotating shaft 17 is fixedly connected with the driven gear 18 at both ends. A plurality of sliding grooves 20 are formed in the rotating shaft 17. The sliding grooves 20 are slidably connected with the sliding blocks 21 at both ends. The sliding blocks 21 are rotatably connected with the connecting rods 23 on one side. The two connecting rods 23 in the same sliding groove 20 are rotatably connected with the spherical groove of the side wall of the scraper 14 through the ball head 24. The sediment bin 1 is used for the sedimentation of thick slurry. The sediment after the sedimentation is discharged through the discharge bin 2. The driving motor 4 is used for driving the driving shaft 6 and the stabilizing column 7 to rotate and can be used for lifting the driving shaft 6 for lifting the rake. The stabilizing column 7 can be used as the mounting component of the scraper 32 and is connected with the driving shaft 6 and the discharge bin 2. When the driving shaft 6 rotates, the driving shaft 6 and the four rake arm 8 are more stable through the movable connection of the stabilizing column 7 and the fixed shaft 37, effectively reducing the possibility of deviation of the driving shaft 6 due to uneven stress. The rake arm 8 is stirred by the scraper 14 mounted on the fixed bin 9. The scraper 14 is connected with the fixed bin 9 through the fixed block 15 and the plurality of connecting rods 23, so that the scraper 14 combined with the fixed bin 9 with a plurality of slope structures can change the position and shape. Before the rake is lifted, the scraper 14 is located at the top of the fixed bin 9. After the rake is lifted, the height of the fixed bin 9 is increased. The scraper 14 is rotated through the arc-shaped groove 11 to make the position of the scraper 14 lower, so that the scraper 14 can still stir the sediment at the bottom of the sediment bin 1 after the rake is lifted to prevent solidification and cause the problem of normal discharge. Through the height position of the scraper 14, the effective use area of the scraper 14 is widened, so that the sediment can be effectively stirred before and after the rake is lifted, preventing solidification and causing uneven stress of the scraper 14 at different positions, affecting the overall rotation stability of the rake arm 8. The horizontal groove 10 and the inclined groove 12 are prepared for the scraper 14 to smoothly separate from the fixed bin 9 before the scraper 14 rotates and to be close to the fixed bin 9 after the scraper 14 rotates, preventing interference when the scraper 14 rotates. The two sliding blocks 21 are used to push the connecting rods 23 close to each other along the sliding groove 20 to make the connecting rods 23 push the scraper 14 to slide outward along the horizontal groove 10 or the inclined groove 12 to expand, and vice versa.

[0039] As a technical optimization scheme of the present application, the mounting frame 3 is fixedly installed at the bottom end center of the feeding bin 5. The feeding bin 5 is rotatably connected with the top of the driving shaft 6. The feeding bin 5 is fixedly connected with the feeding pipe on one side. The feeding pipe and the feeding bin 5 are used for injecting thick slurry into the sediment bin 1.

[0040] As a technical optimization scheme of the present application, a plurality of telescopic sleeves 16 are rotatably connected to the bottom of the scraper 14 close to one side of the fixed bin 9, the end of the sleeve 16 is rotatably connected to the inner wall of the fixed bin 9, and the inner wall of the fixed bin 9 is provided with an embedded groove at a position corresponding to the sleeve 16. The sleeve 16 itself does not have power, but the telescopic property of the sleeve 16 can automatically expand and contract with the movement of the scraper 14 when the scraper 14 is stressed and buffered, and in the process of rotating the scraper 14, the sleeve 16 follows, that is, it can limit the scraper 14 in rotation or movement in combination with the connecting rod 23, preventing the scraper 14 from deviating and failing to normally play the role of buffering and stirring the sediment.

[0041] As a technical optimization scheme of the present application, a driving gear is engaged with the driven gear 18 on one side, and a first motor 19 is installed on both sides inside the fixed bin 9, and the output end of the first motor 19 is fixedly connected with the driving gear. The first motor 19 drives the driven gear 18 to rotate and in turn drives the rotating shaft 17 to rotate, so that the scraper 14 can rotate along the arc-shaped groove 11 to widen the effective use area of the scraper 14.

[0042] As a technical optimization scheme of the present application, the rotating shaft 17 on one side of the chute 20 is fixedly connected with a second motor box 22, a second motor is installed in the second motor box 22, the output shaft of the second motor is movably connected with a first screw rod 25 through a cross fixed block 27, the rotating shaft 17 on the other side of the chute 20 is rotatably connected with a second screw rod 26, and the first screw rod 25 and the second screw rod 26 are respectively screwed with two sliding blocks 21. The second motor rotates to drive the first screw rod 25 and the second screw rod 26 to rotate, and in turn drives the two sliding blocks 21 to move towards or away from each other along the chute 20, so as to realize the pushing or resetting of the scraper 14, and the cross fixed block 27 can provide a margin for the movement of the first screw rod 25 and also ensure the stable connection between the first screw rod 25 and the second motor.

[0043] As a technical optimization scheme of the present application, the end of the first screw rod 25 is fixedly connected with four sliding strips 29, four insertion grooves 30 are formed in the outer wall of the second screw rod 26 close to one end of the first screw rod 25, and the sliding strips 29 are slidably connected with the insertion grooves 30. The first screw rod 25 and the second screw rod 26 can be coaxially rotated through the connection of the insertion grooves 30 and the sliding strips 29, and also can realize the mutual sliding of the first screw rod 25 and the second screw rod 26, which is convenient for the realization of subsequent buffering effect.

[0044] As a technical optimization scheme of the present application, the second screw rod 26 is provided with a central hole 31 near the side wall of one end of the first screw rod 25, the first screw rod 25 is fixedly connected with a tension spring 28 near the side wall of one end of the second screw rod 26, and the end of the tension spring 28 is fixedly connected with the end side wall of the central hole 31. In normal use, whether the scraper 14 is located in the horizontal groove 10 or the inclined groove 12, the fixed block 15 is still away from the end near the fixed bin 9 side of the horizontal groove 10 or the inclined groove 12, at this time, with the increase of the thick slurry injection amount and the sedimentation time, the sediment at the bottom of the sediment bin 1 gradually increases, the scraper 14 first pushes the sediment, at this time, the scraper 14 is pushed in the opposite direction by the reaction force of the sediment to move the scraper 14 through the fixed block 15 to the end of the horizontal groove 10 or the inclined groove 12, then the scraper 14 will push the two sliding blocks 21 on both sides of the same sliding groove 20 to slide in opposite directions through the rotation of the connecting rod 23, during which the first screw rod 25 and the second screw rod 26 slide in opposite directions, and the slide bar 29 slides along the insertion slot 30 to stretch the tension spring 28, at this time, the scraper 14 will realize the buffering of the sediment to the scraper 14 through the force of the plurality of tension springs 28, since a plurality of scrapers 14 are arranged on the entire rake arm 8, the force received by each scraper 14 is not completely uniform, therefore, each scraper 14 is in two different states of active buffering and fixed at the same time, thereby relieving the phenomenon of uneven force at each place, making the overall force of the four rake arms 8 uniform and more stable.

[0045] As a technical optimization scheme of the present application, the stable column 7 is fixedly connected with four evenly distributed trapezoidal scrapers 32 on the side wall, the oblique edge and the two horizontal edges inside the scraper 32 are provided with a receiving slot 33, the receiving slot 33 is slidably connected with an extension frame 34 which is the same shape as the scraper 32, the horizontal edge end of the top and bottom of the extension frame 34 is fixedly connected with a wedge-shaped block 36 penetrating into the stable column 7, one side of the horizontal edge of the top and bottom of the extension frame 34 is fixedly connected with a spring 35, and the ends of the two springs 35 are respectively fixedly connected with the side wall of the clamping block of the top and bottom of the receiving slot 33. The scraper 32 is driven by the stable column 7 to stir the sediment in the discharge bin 2 when the driving shaft 6 rotates, before the rake is lifted, the entire driving shaft 6 and rake arm 8 are located at the lowest position, the wedge-shaped block 36 and the wedge-shaped fixed block 38 abut through the oblique edge, the force of the spring 35 also promotes the extension frame 34 to slide towards the fixed shaft 37, and the extension frame 34 is completely received in the receiving slot 33, at this time, the discharge bin 2 is stirred by the scraper 32.

[0046] As a technical optimization scheme of the present application, the bottom end of the discharge bin 2 is fixedly connected with a vertical fixed shaft 37, the top of the fixed shaft 37 penetrates into the stabilizing column 7, the top and the bottom side wall of the fixed shaft 37 are fixedly connected with four wedge-shaped fixed blocks 38 respectively abutting against the wedge-shaped blocks 36 at the ends of the four extension frames 34, and the middle part of the stabilizing column 7 is fixedly installed with four pressure sensors 39 abutting against the side wall of the fixed shaft 37. After the rake is lifted, the position of the driving shaft 6 and the stabilizing column 7 is raised, the fixed shaft 37 is fixed at the bottom of the discharge bin 2 and does not change in position, the stabilizing column 7 is raised to synchronously drive the scraper frame 32 and the extension frame 34 to be raised, at this time, the wedge-shaped block 36 is raised while being pushed by the wedge-shaped fixed block 38 to slide away from the fixed shaft 37, that is, the spring 35 is compressed and the extension frame 34 slides out of the storage groove 33, so that the four scraper frames 32 are expanded through the extension frame 34 after the rake is lifted and can still stir the side wall of the discharge bin 2, preventing the outlet of the discharge bin 2 from being blocked, preventing the problem of uneven force applied to the scraper frame 32 caused by the blockage of the discharge bin 2, further improving the overall stability of the driving shaft 6, the rake frame arm 8 and the stabilizing column 7, and also facilitating the discharge bin 2 to smoothly discharge the precipitate after the precipitation is completed. During operation, the pressure sensors 39 send the force conditions of the stabilizing column 7 in all directions to an external receiving device in real time, which is convenient for workers to check.

[0047] In use, the thick slurry to be precipitated is first injected into the feeding bin 5 through the feeding pipe in the precipitation bin 1, while the thick slurry is naturally precipitated in the precipitation bin 1, the driving motor 4 is started to drive the driving shaft 6 and the stabilizing column 7 to rotate, synchronously driving the four rake frame arms 8 and the fixed bins 9 and the scrapers 14 to rotate and stir the thick slurry at the bottom of the precipitation bin 1, and the scraper frame 32 to stir the discharge bin 2 to prevent deposition and blockage, at this time, the entire driving shaft 6 and the rake frame arm 8 are at the lowest position, the wedge block 36 and the wedge fixed block 38 abut through the inclined edge, the extension frame 34 is completely stored in the storage slot 33, the scraper 14 is slidably connected to the horizontal slot 10 through the fixed block 15 close to one side of the fixed bin 9, but the fixed block 15 is still away from the end of the horizontal slot 10 close to one side of the fixed bin 9, as the amount of thick slurry injected and the precipitation time increase, the precipitate at the bottom of the precipitation bin 1 gradually increases, when the driving shaft 6 rotates, the scraper 14 first pushes the precipitate, at this time, the scraper 14 is pushed in the opposite direction by the reaction force of the precipitate to move the scraper 14 through the fixed block 15 to the end of the horizontal slot 10, when the scraper 14 moves, it will push the two sliding blocks 21 on both sides of the same sliding slot 20 to slide in opposite directions through the rotation of the connecting rod 23, during which the first screw 25 and the second screw 26 slide in opposite directions, the first screw 25 is limited by the cross fixed block 27 and the second motor, the second screw 26 is limited by the cylindrical end and the end of the sliding slot 20, and will not fall off, and the slide strip 29 slides along the insertion slot 30 to stretch the tension spring 28, at this time, the scraper 14 will be buffered by the precipitate through the force of the multiple tension springs 28, since the entire rake frame arm 8 is provided with multiple scrapers 14, the force received by each scraper 14 is not completely uniform, therefore, each scraper 14 is in two different states of active buffering and fixed at the same time, thereby relieving the uneven force at each place, making the overall force of the four rake frame arms 8 uniform and more stable, during operation, the pressure sensor 39 transmits the force in all directions of the stabilizing column 7 to the external receiving device in real time, facilitating the staff to check.

[0048] When the thickness of the precipitate increases to the required rake, the driving shaft 6 and the stabilizing column 7 are first lifted to raise the overall height of the rake frame arm 8, since the fixed shaft 37 is fixed at the bottom of the discharge bin 2 and does not change position, the scraper frame 32 and the extension frame 34 are simultaneously lifted when the stabilizing column 7 is raised, at this time, the wedge block 36 is pushed by the wedge fixed block 38 to slide away from the fixed shaft 37 while being raised, that is, the spring 35 is compressed and the extension frame 34 slides out of the storage slot 33, so that the four scraper frames 32 are expanded by the extension frame 34 after the rake is lifted and can still stir the side wall of the discharge bin 2 to prevent the discharge bin 2 outlet from being blocked.

[0049] After the driving shaft 6 is lifted, the second motor in the second motor box 22 is started, the second motor rotates to drive the first screw rod 25 and the second screw rod 26 to rotate, so that the two sliding blocks 21 are close to each other along the sliding groove 20, then the two sliding blocks 21 can drive the connecting rods 23 to be close to each other to push the scraper 14 to slide along the horizontal groove 10 through the fixed block 15 to the end away from the fixed bin 9, at this time, the second motor is paused, the two first motors 19 are started to drive the driving gear and the driven gear 18 to rotate, and then the entire rotating shaft 17 is rotated, the scraper 14 is driven by the connecting rods 23 to rotate along the arc-shaped groove 11 through the fixed block 15 to the bottom of the arc-shaped groove 11, and the first motor 19 is stopped, in this process, the sleeve 16 is stretched and rotated synchronously, and the ball head 24 rotates in the spherical groove, the direction of the scraper 14 can be limited by the connecting rods 23 to prevent the scraper 14 from deviating, the second motor is reversed, the second motor rotates to drive the first screw rod 25 and the second screw rod 26 to rotate, so that the two sliding blocks 21 are away from each other along the sliding groove 20, then the two sliding blocks 21 can drive the connecting rods 23 to be away from each other to pull the scraper 14 to slide along the inclined groove 12 through the fixed block 15 to the side close to the fixed bin 9, but the fixed block 15 is still away from the end of the inclined groove 12 close to the fixed bin 9, so as to facilitate the scraper 14 to be buffered as described above, so that the positions of the scrapers 14 are lowered after the rake is lifted, and the widened fixed bin 9 after being lifted widens the effective use area of the scraper 14.

[0050] Obviously, various modifications and changes can be made to the present application by those skilled in the art without departing from the spirit and scope of the application. Accordingly, it is intended that all such modifications and changes be included within the scope of the application as defined by the following claims and their equivalents.

[0051] The above description is only the preferred embodiment of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be included in the protection scope of the present application.

Claims

1. A thickener rake frame for improving mixing stability, comprising a sedimentation tank (1) and a rake frame arm (8), characterized in that: The sedimentation tank (1) has a conical discharge tank (2) at the bottom center. The sedimentation tank (1) has a mounting frame (3) fixedly installed at the top. The mounting frame (3) has a drive motor (4) fixedly installed in the middle. The output end of the drive motor (4) is fixedly connected to a drive shaft (6). The bottom end of the drive shaft (6) is fixedly connected to a stabilizing column (7) located in the discharge tank (2). The bottom end of the drive shaft (6) is fixedly connected to four inclined rake arms (8). Each rake arm (8) has several evenly arranged fixed tanks (9) fixedly installed at its bottom end. Several storage tanks (91) are opened on one side of the inner wall of the fixed tank (9). Horizontal grooves (10) are symmetrically opened on opposite sides of the inner wall of the fixed tank (9). An arc groove (11) is opened at the end of the horizontal groove (10). An inclined groove (12) is opened at the bottom end of the arc groove (11). A scraper mechanism (13) including a scraper (14) is provided on one side of the fixed tank (9). The scraper (14) is fixedly connected to two horizontal grooves (10) with fixed blocks (15) on both sides. The scraper (14) is an irregular structure with one side vertical and the other side having a multi-slope structure. The fixed chamber (9) is adapted to the scraper (14). The fixed chamber (9) is rotatably connected to a rotating shaft (17). The two ends of the rotating shaft (17) are fixedly connected to driven gears (18). Several sliding grooves (20) are opened on the rotating shaft (17). The two ends of the sliding groove (20) are slidably connected to sliders (21). The slider (21) is rotatably connected to a connecting rod (23) on one side. The ends of the two connecting rods (23) in the same sliding groove (20) are rotatably connected to the spherical groove on the side wall of the scraper (14) through ball heads (24).

2. The thickener rake frame for improving mixing stability according to claim 1, characterized in that: The mounting bracket (3) has a feeding bin (5) fixedly installed at the bottom center. The feeding bin (5) is rotatably connected to the top of the drive shaft (6). A feeding pipe is fixedly connected to one side of the feeding bin (5).

3. A thickener rake frame for improving mixing stability according to claim 1, characterized in that: The scraper (14) has several retractable sleeves (16) rotatably connected to the bottom of the fixed chamber (9) on the side close to the bottom of the fixed chamber (9). The ends of the sleeves (16) are rotatably connected to the inner wall of the fixed chamber (9). The inner wall of the fixed chamber (9) has an embedded groove at the corresponding position of the sleeves (16).

4. A thickener rake frame for improving mixing stability according to claim 1, characterized in that: The driven gear (18) is meshed with the driving gear on one side, and the first motor (19) is installed on both sides inside the fixed chamber (9). The output end of the first motor (19) is fixedly connected to the driving gear.

5. A thickener rake frame for improving mixing stability according to claim 1, characterized in that: The second motor box (22) is fixedly connected to the rotating shaft (17) on one side of the slide (20). The second motor is installed in the second motor box (22). The output shaft of the second motor is movably connected to the first screw (25) through the cross fixing block (27). The second screw (26) is rotatably connected to the other side of the slide (20). The first screw (25) and the second screw (26) are threadedly connected to the two sliders (21) respectively.

6. A thickener rake frame for improving mixing stability according to claim 5, characterized in that: The first screw (25) has four slide bars (29) fixedly connected to its end. The second screw (26) has four slots (30) on its outer wall near the end of the first screw (25). The slide bars (29) are slidably connected to the slots (30).

7. A thickener rake frame for improving mixing stability according to claim 5, characterized in that: The second screw (26) has a central hole (31) on one side wall near the first screw (25). A tension spring (28) is fixedly connected to one side wall near the second screw (26). The end of the tension spring (28) is fixedly connected to the end side wall of the central hole (31).

8. A thickener rake frame for improving mixing stability according to claim 1, characterized in that: The side wall of the stabilizing column (7) is fixedly connected to four evenly distributed trapezoidal scrapers (32). The scraper (32) has a storage groove (33) inside its inclined side and two horizontal sides. An extension frame (34) with the same shape as the scraper (32) is slidably connected inside the storage groove (33). The top and bottom horizontal sides of the extension frame (34) are fixedly connected to wedge blocks (36) that penetrate the stabilizing column (7). Springs (35) are fixedly connected to one side of the top and bottom horizontal sides of the extension frame (34). The ends of the two springs (35) are fixedly connected to the side walls of the card blocks at the top and bottom of the storage groove (33), respectively.

9. A thickener rake frame for improving mixing stability according to claim 8, characterized in that: The bottom center of the unloading hopper (2) is fixedly connected to a vertical fixed shaft (37). The top of the fixed shaft (37) is inserted into a stabilizing column (7). The top and bottom side walls of the fixed shaft (37) are fixedly connected to four wedge-shaped fixing blocks (38) that abut against the wedge-shaped blocks (36) at the ends of the four extension frames (34). Four pressure sensors (39) that abut against the side walls of the fixed shaft (37) are fixedly installed in the middle of the stabilizing column (7).

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