Stirring unit and filter press

Abstract

The invention relates to the technical field of pressure filters, and provides a stirring unit and a filter press. The rotating shaft is rotationally arranged relative to the base body, sleeves the base body and is provided with a meshing part I; the telescopic piece is arranged on the base body in a swinging mode and located at one end of the rotating shaft, the telescopic piece is provided with a telescopic end and a second meshing part, and after the rotating shaft rotates, the first meshing part is meshed with or canceled from meshing with the second meshing part for driving the telescopic piece to swing back and forth; the scraper is arranged at the telescopic end and used for scraping ore pulp on the inner wall of the ore pulp tank. According to the technical scheme, the problems that in the prior art, ore pulp in an ore pulp tank of a pressure filter is uneven and prone to sedimentation, the filtering efficiency is reduced, and follow-up products are affected are solved.

Description

Technical Field

[0001] The invention relates to the technical field of pressure filters, and in particular to a stirring unit and a filter press. Background Art

[0002] As an efficient solid-liquid separation equipment, the pressurized filter has a unique working mechanism. Its working principle is mainly based on solid-liquid separation under a pressurized environment. A specially designed and manufactured disc filter is placed in a closed pressurized bin. The slurry is transported to the slurry tank of the disc filter by a feed pump. Compressed air is used as the filter medium, and the disc filter performs filtering operations. This process can separate solids and liquids more efficiently because the pressure increases the efficiency of filtration. After filtration, a filter cake is formed on the filter disc. The filter cake is transported to the sealed discharge device through a scraper conveyor located below the discharge port of the filter, and the sealed discharge device discharges it out of the bin. At the same time, the filtered filtrate is collected and discharged from the filter.

[0003] However, there is a common problem in the actual use of current pressurized filters: the slurry inside the slurry tank is prone to precipitation, which will cause the uniformity of the slurry to decrease. In areas with too high concentration, the filter cake is formed too quickly, which can easily clog the filter cloth and reduce the filtration speed. In areas with too low concentration, the filter cake is thinner and cannot fully play the role of the filter medium, which also reduces the filtration efficiency. The uneven slurry makes the quality of the filtered product unstable, and the water content of the product is too high or too low, affecting the subsequent use and sales of the product. In addition, uneven slurry will also shorten the service life of equipment parts and increase the risk of equipment failure. Summary of the invention

[0004] The present invention provides a stirring unit and a filter press, which solve the problem in the related art that the slurry in the slurry tank of the pressure filter is uneven and easy to precipitate, resulting in reduced filtration efficiency and affecting subsequent products.

[0005] The technical solution of the present invention is as follows: A stirring unit, comprising: matrix; A rotating shaft, the rotating shaft is rotatably arranged relative to the base body and sleeved on the base body, and the rotating shaft has a first meshing portion; A telescopic member, the telescopic member is swingably arranged on the base and is located at one end of the rotating shaft. The telescopic member has a telescopic end and a second meshing portion. After the rotating shaft rotates, the first meshing portion meshes with or cancels the meshing portion, so as to drive the telescopic member to swing back and forth; A scraper is arranged on the telescopic end and is used to scrape the slurry from the inner wall of the slurry tank.

[0006] As a further technical solution, the base is arranged vertically, the telescopic member is located at the bottom of the shaft, the bottom of the shaft has the first meshing portion, and the first meshing portion is a sector tooth, and further includes: A swing shaft is rotatably arranged on the base, the axial direction of the swing shaft is perpendicular to the axial direction of the rotating shaft, there are two telescopic members, both of which are swingably arranged on the base through the swing shaft, and the rotating shaft is located between the two telescopic members.

[0007] As a further technical solution, the top of the telescopic member has the meshing portion 2, the meshing portion 2 is a semicircular tooth, the scraper is an elongated strip, the two telescopic ends are detachably connected to the scraper, and the central angle of the meshing portion 1 is less than 180°.

[0008] As a further technical solution, the scraper has an annular groove on the top, and the two telescopic ends are arranged in the annular groove, and further comprises: Two toggle members, both of which are stationarily arranged relative to the base, and two toggle members are respectively arranged on both sides of the base. After the telescopic member swings to drive the scraper to move, the two ends of the scraper are respectively in contact with the two toggle members, so as to toggle the scraper to slide relative to the telescopic member along the annular groove path.

[0009] As a further technical solution, the inner wall of the slurry tank is arc-shaped, the bottom of the scraper has an arc-shaped groove, and further includes: A plurality of scraping parts are arranged in the arc-shaped groove in a vertically movable manner, the bottom of the scraping parts exposes the arc-shaped groove, the plurality of scraping parts are arranged at intervals along the length direction of the arc-shaped groove, and the tops of the plurality of scraping parts are adapted to the bottom shape of the arc-shaped groove.

[0010] As a further technical solution, it also includes: Two pulp lifting members, both of which are swingably arranged on the base, and the rotating shaft is located between the two pulp lifting members, and the pulp lifting members are used to lift the slurry to the filter disc after swinging, and the pulp lifting members include: A pulp lifting arm, wherein the pulp lifting arm is swingably arranged on the base, and the swing axis of the pulp lifting arm is perpendicular to the axis of the rotating shaft; A pulp lifting plate is swingably arranged on one end of the pulp lifting arm away from the base body.

[0011] As a further technical solution, the swing axis of the pulp lifting arm is parallel to the swing axis of the pulp lifting plate, and further includes: A stop block is arranged on one end of the pulp lifting arm close to the pulp lifting plate, located on one side of the pulp lifting plate, and the stop block is arranged along the length direction of the pulp lifting arm. After the pulp lifting plate swings, it abuts or cancels the abutment against the stop block, and the stop block is used to limit the swing angle of the pulp lifting plate.

[0012] As a further technical solution, it also includes: A ring body, wherein the ring body is arranged on the rotating shaft, the ring body and the rotating shaft are arranged coaxially, and the top of the ring body has a first protrusion; A transmission block, the transmission block is movably arranged relative to the rotating shaft, and is sleeved on the rotating shaft and located above the ring body, and the bottom of the transmission block has a second protrusion; A connecting rod, both ends of which are respectively hingedly connected to the pulp lifting arm and the transmission block; An elastic member, wherein the elastic member is sleeved on the rotating shaft and is located above the transmission block, one end of the elastic member abuts against the base body, and the other end abuts against the transmission block, and the elastic member provides a force for the transmission block to approach the ring body; Among them, after the ring body rotates with the rotating shaft, the first protrusion lifts or cancels the lifting of the transmission block through the second protrusion, so as to drive the pulp lifting arm to swing.

[0013] As a further technical solution, the rotating shaft is a low-speed rotating shaft, and further comprises: A sleeve, the sleeve is rotatably arranged relative to the rotating shaft and sleeved on the rotating shaft; A driving member, the driving member is arranged on the rotating shaft and drives the sleeve to rotate; A stirring blade disc, wherein the stirring blade disc is arranged at the bottom of the sleeve and is coaxially arranged with the sleeve; A plurality of spiral stirring rods are provided, one end of the spiral stirring rod is fixedly connected to the top of the sleeve, and the other end is fixedly connected to the stirring fan disk, and the plurality of spiral stirring rods are arranged along the circumference of the sleeve.

[0014] A filter press comprises the above-mentioned stirring unit, wherein the base is a vertical axis, and there are several bases, and further comprises: a shell and a main shaft, wherein the main shaft is rotatably arranged in the shell, the main shaft has several filter discs, the base is fixedly connected to the shell, and several bases and filter discs are alternately arranged in sequence along the axial direction of the main shaft, the axial direction of the main shaft is perpendicular to the axial direction of the rotating shaft, the main shaft and the rotating shaft both have bevel gear portions, the bevel gear portions of the main shaft are meshed with the bevel gear portions of the rotating shaft, and the main shaft is used to drive the several rotating shafts to rotate after rotation.

[0015] The working principle and beneficial effects of the present invention are: 1. Solve the problem of slurry sedimentation: By setting a scraper connected by a telescopic part, it swings back and forth driven by the rotating shaft, which can directly scrape off the precipitated slurry that may appear on the inner wall of the slurry tank, effectively prevent the slurry from accumulating and precipitating due to long-term stillness, maintain the uniformity of the slurry, avoid a series of problems such as abnormal filter cake formation and reduced filtration efficiency caused by sedimentation, and adapt to different depths of the inner wall of the slurry tank to adjust the scraping depth range.

[0016] 2. Ensure stable filtration efficiency: avoid the disadvantages caused by uneven slurry concentration, ensure that the filter cake can be formed under appropriate conditions during the entire filtration process, and neither the filter cloth will be quickly blocked due to excessive local concentration and affect the filtration speed, nor the filter cake will be too thin due to low concentration and unable to fully utilize the filter medium, thereby stabilizing the filtration efficiency, ensuring the stability of product quality, and reducing the occurrence of abnormal water content in the product.

[0017] 3. Extend equipment life: Maintaining uniform slurry can reduce abnormal wear, impact and other damages to equipment parts caused by uneven slurry, reduce the probability of equipment failure, extend the overall service life of the equipment, and reduce maintenance costs and downtime. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.

[0019] Figure 1 A filter press matching diagram of the present invention; Figure 2 This is a schematic diagram of the internal structure of a filter press in the present invention; Figure 3 For the present invention Figure 2 Enlarged view of part A in the middle; Figure 4 This is a schematic diagram of the structure of a stirring unit in the present invention from a first viewing angle; Figure 5 This is a schematic structural diagram of a stirring unit in the present invention from a second viewing angle; Figure 6 For the present invention Figure 5 Enlarged view of middle C; Figure 7 This is a diagram showing the coordination of the toggle member and the scraper in the present invention; Figure 8 For the present invention Figure 7 Enlarged view of middle E part; Fig. 9 It is a cross-sectional view of the scraper in the present invention; Fig.10 It is a schematic diagram of the structure of the pulp lifting member in the present invention; Fig.11 For the present invention Figure 5 Enlarged view of the middle D part; Fig.12 For the present invention Figure 3 Enlarged view of middle part B; Fig.13 A cross-sectional view of a stirring unit in the present invention; Fig.14 For the present invention Fig.13 Enlarged view of part F in the middle.

[0020] In the figure: 1, base, 2, rotating shaft, 201, meshing part 1, 3, telescopic member, 301, telescopic end, 302, meshing part 2, 4, scraper, 401, annular groove, 402, arc groove, 5, swing shaft, 6, toggle member, 7, scraper, 8, slurry lifting member, 801, slurry lifting arm, 802, slurry lifting plate, 9, stop block, 10, ring body, 1001, first protrusion, 11, transmission block, 1101, second protrusion, 12, connecting rod, 13, elastic member, 14, sleeve, 15, driving member, 16, stirring fan disk, 17, spiral stirring rod, 18, shell, 19, main shaft, 20, filter disk, 21, conical tooth part. DETAILED DESCRIPTION

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0022] In order to simplify the drawings, only the parts related to the invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0023] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0025] Reference Figure 1 to Figure 14 , which is the first embodiment of the present invention, proposes a stirring unit, including: a base 1; a rotating shaft 2 is rotatably arranged relative to the base 1 and sleeved on the base 1, the rotating shaft 2 has a meshing portion 1 201; a telescopic member 3, the telescopic member 3 is swingably arranged on the base 1, located at one end of the rotating shaft 2, the telescopic member 3 has a telescopic end 301 and a meshing portion 2 302, after the rotating shaft 2 rotates, the meshing portion 1 201 meshes with or cancels the meshing portion 2 302, which is used to drive the telescopic member 3 to swing back and forth; a scraper 4 is arranged on the telescopic end 301, and the scraper 4 is used to scrape the slurry on the inner wall of the slurry tank.

[0026] In this embodiment, the working process of the stirring unit is as follows: when the equipment starts to run, the slurry conveying and other related systems of the pressure filter are started synchronously. At the same time, the driving device (such as an external small motor connected to the rotating shaft 2) drives the rotating shaft 2 to start rotating. The rotating shaft 2 rotates smoothly under the support of the base 1. Specifically, the rotating shaft 2 is sleeved on the base 1. The base 1 serves as a stable foundation for the entire structure to ensure that the rotating shaft 2 and subsequent components will not have adverse conditions such as shaking and displacement during operation, and occupy less space. It is arranged between adjacent filter discs 20 to stir and disturb the slurry flowing between the filter discs 20 to solve the problem of uneven slurry at the bottom of the slurry tank.

[0027] Furthermore, as the rotating shaft 2 rotates, the meshing portion 201 provided at one end thereof begins to function. When the meshing portion 201 is rotated to mesh with the meshing portion 2 302 on the telescopic member 3, the telescopic member 3 and the scraper 4 provided on the telescopic end 301 thereof will be driven to swing. As a result, the scraper 4 will not be damaged when contacting the slurry on the inner wall of the slurry tank due to its high wear resistance and corrosion resistance (such as the metal scraper 4 with rubber lining). Its shape is designed as a linear plate according to the inner wall busbar of the arc-shaped slurry tank to ensure full fit without any damage. Scraping dead corners; on the contrary, if the telescopic member 3 loses the power required for swinging, it will swing back to its original position under the action of its own gravity, even if it is inside a slurry tank full of slurry; the above two processes are performed alternately in sequence to realize the reciprocating swing of the telescopic member 3, that is, the process of the meshing portion 1 201 engaging or disengaging the meshing portion 2 302, and under its reciprocating swing, the scraper 4 performs regular scraping action along the inner wall of the slurry tank, scraping off the slurry deposited on the inner wall, making it re-mixed into the main body of the slurry, and effectively preventing the slurry from settling and accumulating.

[0028] Among them, if the telescopic part 3 adopts the form of a hydraulic or pneumatic telescopic rod, the hydraulic or pneumatic system inside it plays a role of stable support and assisting the smooth execution of the action. At the same time, the sealing performance prevents the intrusion of slurry from affecting the telescopic action; and during the continuous operation of the entire pressurized filter, due to the certain pressure inside, in order to prevent the shaft 2 or the swinging telescopic part 3 and the scraper 4 from being affected, the overall shaft 2 speed needs to be set relatively low, specifically in the range of 1-10 rpm, which can also ensure uniform stirring of the slurry to a certain extent.

[0029] Compared with traditional pressure filters: 1. Active anti-sedimentation: Traditional methods rely on regular manual cleaning of slurry tank sedimentation, which is inefficient and difficult to maintain slurry uniformity in real time, requiring shutdown. The stirring unit can actively scrape off the sedimentation through the scraper 4, always keeping the slurry in a good state, without frequent manual intervention, reducing labor costs and labor intensity.

[0030] 2. Compact and efficient structure: Compared with the traditional practice of adding a large stirring device to prevent slurry sedimentation, this stirring unit uses a clever combination of a low-speed rotating shaft 2, a telescopic member 3 and a scraper 4. It has a more compact structure, occupies less space, can be flexibly arranged in a limited slurry tank space, and works efficiently without affecting the normal operation of other filtering links.

[0031] 3. Precisely control the scraping action: Through the meshing design of the meshing part 1 201 and the meshing part 2 302, the telescopic member 3 is precisely controlled to drive the scraper 4 to swing back and forth, thereby achieving targeted and regular scraping operations, avoiding unnecessary energy waste and excessive stirring, and being energy-saving and efficient compared to traditional extensive stirring.

[0032] Specific configuration of each component: The base 1 serves as the basic supporting structure of the entire stirring unit. It is arranged between two adjacent filter discs 20 of the main shaft 19 and acts on the bottom of the slurry tank. Therefore, the base 1 is usually vertically arranged in the form of a vertical axis for the rotation shaft 2 to be stably mounted and occupy less space. The base 1 can be made of metal materials such as stainless steel, etc., cast or welded, and is welded to the entire pressure filter housing 18, or detachably connected through brackets and fasteners.

[0033] The power required for the rotation of the rotating shaft 2 can be provided by a built-in small motor to meet the low-speed requirement without affecting the operation of the pressure filter. Alternatively, power transmission can be achieved through a mechanical structure using a main shaft 19 perpendicular to it. Specifically, a bevel tooth portion 21 can be integrally formed on the main shaft 19 and the rotating shaft 2. The bevel tooth portions 21 of the two mesh with each other, thereby being able to stably drive the rotating shaft 2 to rotate at a low speed. Since the rotation speed of the main shaft 19 of the pressure filter is also low, a certain cost can be saved.

[0034] Furthermore, the base 1 is arranged vertically, the telescopic part 3 is located at the bottom of the rotating shaft 2, the bottom of the rotating shaft 2 has an engaging portion 201, and the engaging portion 201 is a fan-shaped tooth, and also includes: a swing shaft 5 is rotatably arranged on the base 1, the axial direction of the swing shaft 5 is perpendicular to the axial direction of the rotating shaft 2, there are two telescopic parts 3, the two telescopic parts 3 are both swingably arranged on the base 1 through the swing shaft 5, and the rotating shaft 2 is located between the two telescopic parts 3.

[0035] In this embodiment, the space of the slurry tank in the vertical direction is fully utilized, and the telescopic parts 3 are arranged at the bottom of the rotating shaft 2. The ends of the two parts close to each other complete the power transmission through the meshing part. It is particularly suitable for the situation where the slurry tank is relatively high and the horizontal space is relatively limited. In addition, through the swing shaft 5 that runs through the base 1, the two groups of telescopic parts 3 are arranged on both sides of the rotating shaft 2. On the one hand, the two groups of telescopic parts 3 jointly drive the integrated scraper 4 more easily. On the other hand, this symmetrical layout can effectively prevent the problem of local stress concentration on the base 1 that may be caused by unilateral force, so that the entire stirring unit can be more compactly integrated into the internal environment of the slurry tank of the pressure filter.

[0036] In addition, the fan-shaped teeth are used as the meshing part 1 201 at the bottom of the rotating shaft 2. When it cooperates with the meshing part 2 302 on the telescopic member 3, compared with the continuous tooth shape, the meshing of the fan-shaped teeth within a specific rotation angle range can provide more precise control of the transmission start and end points, which means that the swing timing and amplitude of the telescopic member 3 can be accurately set, and the two sets of meshing parts 2 302 are alternately meshed to achieve the all-round symmetrical reciprocating swing of the telescopic member 3 relative to the two sides of the rotating shaft 2, thereby fully stirring the slurry.

[0037] Furthermore, the top of the telescopic member 3 has a second meshing portion 302, the second meshing portion 302 is a semicircular tooth, the scraper 4 is an elongated strip, the two telescopic ends 301 are detachably connected to the scraper 4, and the central angle of the meshing portion 1 201 is less than 180°.

[0038] In this embodiment, with respect to the meshing method, in order to ensure smooth movement, a semicircular tooth is provided at the top of the telescopic member 3 as the meshing portion 2 302, which cooperates with the fan-shaped tooth-meshing portion 1 201 whose central angle is less than 180° at the bottom of the rotating shaft 2, to form a special intermittent meshing transmission mechanism, which effectively avoids transmission jamming or impact caused by tooth mismatch. This intermittent meshing method can also accurately control the working cycle of the telescopic member 3. The fan-shaped tooth central angle is less than 180°, which means that during one rotation of the rotating shaft 2, the telescopic member 3 only participates in the swinging work in a specific angle range, and the swinging work is symmetrical on both sides, and the rest of the time it is in a rest state, that is, it swings to reset by its own weight.

[0039] The scraper 4 is designed to be long and can efficiently cover a larger area of ​​the inner wall of the slurry tank, increase the single scraping range, reduce the number of scraping times, and improve work efficiency; The two telescopic ends 301 and the scraper 4 are connected in a detachable manner, which greatly facilitates the maintenance, replacement and adaptive adjustment of the scraper 4. For example, in the bolt connection, corresponding bolt holes are pre-processed on the telescopic end 301 and the scraper 4, respectively, and the two are connected together by bolts and nuts to prevent the scraper 4 from loosening due to greater resistance during the scraping process; for another example, in the slot and block connection, a slot is set on the telescopic end 301, and a corresponding block is set on the scraper 4. During installation, the block is inserted into the slot, and the scraper 4 is fixed on the telescopic end 301 through the limiting effect of the slot. The shapes of the slot and the block can be designed into various shapes according to actual needs, such as dovetail groove, T-slot, etc., to ensure the firmness and stability of the connection.

[0040] Furthermore, the scraper 4 has an annular groove 401 on the top, and the two telescopic ends 301 are both arranged in the annular groove 401, and also includes: two toggle members 6 are both stationary relative to the base 1, and two toggle members 6 are respectively arranged on both sides of the base 1. After the telescopic member 3 swings to drive the scraper 4 to move, the two ends of the scraper 4 are respectively abutted against the two toggle members 6, which are used to toggle the scraper 4 to slide along the annular groove 401 path relative to the telescopic member 3.

[0041] In this embodiment, the action process is: on the basis of the original telescopic member 3 driving the scraper 4 to swing back and forth, the scraper 4 is controlled to further have a certain degree of rotational freedom. Specifically, the telescopic member 3 drives the scraper 4 to perform a conventional scraping swing action. When the scraper 4 moves to a certain position under the swinging drive of the telescopic member 3, that is, the two ends of the scraper 4 are respectively abutted against the relatively stationary toggle members 6 on both sides of the base 1. Since the two ends of the scraper 4 are blocked and restricted by the toggle members 6, and the force of the telescopic member 3 to continue to swing still exists, the scraper 4 is forced to slide along the annular groove 401 (401) path relative to the telescopic member 3, adjust the scraping position and angle, and rotate at a certain angle to further scrape the sedimentation area that was not cleaned up by the initial scraping or the local slurry accumulation dead corner formed by the swing of the scraper 4.

[0042] The two groups of toggle members 6 are arranged symmetrically along the center of the vertical axis base 1, and in order to ensure that the telescopic end 301 is stably stuck in the annular slot 401, the telescopic end 301 can be set to be spherical, and the cross section of the annular slot 401 can just wrap most of the spherical telescopic end 301; such an improvement can, on the one hand, more comprehensively clean the sediment in different areas, and on the other hand, by sliding and fine-tuning the position, it is avoided that the blade 4 of a certain place is excessively worn due to forced scraping at a fixed position. This adaptive adjustment mechanism makes the scraper 4 wear more evenly and the overall service life is extended.

[0043] Furthermore, the inner wall of the slurry trough is arc-shaped, and the bottom of the scraper 4 has an arc-shaped groove 402, and also includes: a plurality of scraping parts 7 are arranged in the arc-shaped groove 402 for movement along the vertical direction, the arc-shaped groove 402 is exposed at the bottom of the scraping part 7, the plurality of scraping parts 7 are arranged at intervals along the length direction of the arc-shaped groove 402, and the tops of the plurality of scraping parts 7 are adapted to the groove bottom shape of the arc-shaped groove 402.

[0044] In this embodiment, after the scraper 4 can be rotated and adjusted to a certain angle relative to the telescopic member 3, since the slurry groove is in the shape of an arc, in order to adapt to the occasion and avoid interference between components that cause the scraper 4 to be stuck, an arc-shaped groove 402 with an arc-shaped bottom is opened at the bottom of the scraper 4, and a number of scraping parts 7 with a portion exposed and vertically movable are arranged at intervals therein; in the initial state, the scraping parts 7 are arranged in the arc-shaped groove 402 according to the preset position, and the exposed part at the bottom is ready for scraping slurry. When the scraper 4 moves as a whole, whether it is swinging movement or swinging and rotating movement, it contacts the slurry. When sediment is deposited on the inner wall of the slurry tank, the scraper 7 is subjected to force to complete the scraping, and during the movement, the long scraper 4 and the generatrix of the arc-shaped shell 18 gradually form a cross angle, that is, the bottoms of several scrapers 7 are continuously curved rather than the initial linear. This is because the scraper 7 adapts to the inner wall of the slurry tank at different positions under its own weight, and the scraper 7 extends inward or outward to a certain extent. Through the coordinated action of multiple scrapers 7, it is ensured that no matter what complex movement situation the scraper 4 is in, it can adapt to the shape of the inner wall of the slurry tank, efficiently scrape off sedimentation, maintain the uniformity and stability of the slurry, and provide ideal slurry conditions for subsequent filtration processes.

[0045] The advantage is that, in view of the arc-shaped inner wall of the slurry tank, an arc-shaped groove 402 is designed at the bottom of the scraper 4 and is equipped with a plurality of scraping parts 7 that are movable in the vertical direction, and the arc-shaped groove 402 is exposed at the bottom of the scraping part 7. This structure enables the scraping part 7 to achieve an excellent fit with the inner wall of the slurry tank, ensuring that no sediment is scraped off, and effectively preventing filtration problems caused by local sedimentation accumulation, such as abnormal filter cake formation, slow filtration speed, etc., to ensure stable and efficient operation of the pressure filter.

[0046] Furthermore, it also includes: two pulp lifting members 8 are swingably set on the base 1, and the rotating shaft 2 is located between the two pulp lifting members 8. After the pulp lifting members 8 are swung, they are used to lift the slurry to the filter plate. The pulp lifting members 8 include: a pulp lifting arm 801 is swingably set on the base 1, and the swing axis of the pulp lifting arm 801 is perpendicular to the axis of the rotating shaft 2; a pulp lifting plate 802 is swingably set on the end of the pulp lifting arm 801 away from the base 1.

[0047] In this embodiment, two slurry lifting members 8 lift the slurry toward the filter disc 20, breaking the static sedimentation area that may be formed at the bottom of the slurry tank, and promoting the continuous flow and circulation of the slurry, especially in the bottom corners of the slurry tank or near the inner wall. This structure uses the method of lifting the slurry to further increase the area of ​​slurry adsorption to optimize the filtration efficiency.

[0048] Specifically, since the stirring unit is arranged between two adjacent filter discs 20 of the main shaft 19, two groups of symmetrical pulp lifting members 8 are provided to perform pulp lifting actions on different filter discs 20 respectively. The pulp lifting arm 801 swings to drive the pulp lifting plate 802 to swing. The two swing shafts 5 have a larger lifting angle, and the swinging power can be an additional eccentric wheel or cam structure provided on the rotating shaft 2. When the rotating shaft 2 rotates, the eccentric wheel or cam rotates accordingly, and the circular motion of the eccentric wheel or cam is converted into a reciprocating push-pull motion of the connecting rod 12, thereby driving the pulp lifting arm 801 to swing periodically around its swing shaft 5 on the base 1. For example, when the raised part of the eccentric wheel gradually approaches the connection point of the connecting rod 12, the connecting rod 12 is pushed to make the pulp lifting arm 801 swing outward; when the raised part of the eccentric wheel moves away, the connecting rod 12 drives the pulp lifting arm 801 to swing back under the action of auxiliary return forces such as springs or its own gravity, or an external small motor is provided.

[0049] Furthermore, the swing axis of the pulp lifting arm 801 is parallel to the swing axis of the pulp lifting plate 802, and also includes: a stop block 9 is arranged on one end of the pulp lifting arm 801 close to the pulp lifting plate 802, located on one side of the pulp lifting plate 802, and the stop block 9 is arranged along the length direction of the pulp lifting arm 801, and the pulp lifting plate 802 abuts or cancels the abutment against the stop block 9 after swinging, and the stop block 9 is used to limit the swing angle of the pulp lifting plate 802.

[0050] In this embodiment, due to the two sets of swing points, in order to prevent the pulp lifting plate 802 from swinging arbitrarily and disturbing the ore pulp due to the swing resetting, a stop block 9 is integrally formed on the pulp lifting arm 801 on the back of the pulp lifting plate 802, and the stop block 9 stops and limits the rotation position of the pulp lifting plate 802. When the pulp lifting arm 801 is reset, the back of the pulp lifting plate 802 is subjected to force and starts to rotate under the resistance of the slurry, so as to achieve the effect of reducing the movement resistance in the slurry. In order to enhance the blocking effect, it is arranged along the length direction of the pulp lifting arm 801.

[0051] In the continuous slurry processing process, stable and consistent slurry lifting action is one of the key factors to ensure the uniformity of slurry and the stability of filtering effect. Since the stop block 9 fixes the swing angle of the slurry lifting plate 802, the trajectory and force of the slurry lifting plate 802 are basically the same each time, so that the way the slurry is thrown and mixed remains highly consistent, the process of lifting the slurry from the bottom of the slurry tank and conveying it to the filter disc 20 is standardized, and the fluctuation of the characteristics of the slurry entering the filter disc 20 is extremely small, which helps to stabilize the filter cake formation speed, thickness and quality, and ensure the stability of the filtrate output quality.

[0052] Further, it also includes: the ring body 10 is arranged on the rotating shaft 2, the ring body 10 and the rotating shaft 2 are coaxially arranged, and the top of the ring body 10 has a first protrusion 1001; the transmission block 11 is movably arranged relative to the rotating shaft 2, and is sleeved on the rotating shaft 2, located above the ring body 10, and the bottom of the transmission block 11 has a second protrusion 1101; the two ends of the connecting rod 12 are respectively hingedly connected to the pulp lifting arm 801 and the transmission block 11; the elastic member 13 is sleeved on the rotating shaft 2, located above the transmission block 11, one end of the elastic member 13 abuts the base 1, and the other end abuts the transmission block 11, and the elastic member 13 provides a force for the transmission block 11 to approach the ring body 10; wherein, after the ring body 10 rotates with the rotating shaft 2, the first protrusion 1001 lifts or cancels the lifting of the transmission block 11 through the second protrusion 1101, which is used to drive the pulp lifting arm 801 to swing.

[0053] In this embodiment, when the stirring unit starts to work, as the rotating shaft 2 rotates, the ring body 10 sleeved thereon rotates synchronously, and the first protrusion 1001 on the top of the ring body 10 performs a circular motion accordingly. In the initial state, under the elastic force of the elastic member 13, the transmission block 11 is pressed toward the direction close to the ring body 10, and the second protrusion 1101 at the bottom of the transmission block 11 is in a contactable state with the first protrusion 1001 on the ring body 10. When the ring body 10 rotates until the first protrusion 1001 contacts and lifts up the second protrusion 1101, the transmission block 11 overcomes the elastic force of the elastic member 13 and moves upward. The two ends are hingedly connected to the pulp lifting arm 801 and the transmission block 11 respectively. The upward movement of the transmission block 11 pushes the pulp lifting arm 801 through the connecting rod 12, so that the pulp lifting arm 801 swings outward around its swing axis 5 on the base 1. At this time, the pulp lifting arm 801 is away from the pulp lifting plate 802 at one end of the base 1 to lift the slurry and throw the slurry toward the filter disc 20. On the contrary, the first protrusion 1001 gradually leaves the second protrusion 1101. Under the elastic recovery action of the elastic member 13, the transmission block 11 falls back to the initial position, and pulls the pulp lifting arm 801 through the connecting rod 12 to swing back and reset, preparing for the next pulp lifting action.

[0054] This structure cleverly arranges a ring body 10 and a matching transmission block 11 and other components on the rotating shaft 2, and directly utilizes the rotational power of the rotating shaft 2 to drive the pulp lifting arm 801 to swing. There is no need to add a complex independent drive motor or a complex transmission device to control the pulp lifting action, which greatly simplifies the overall structure of the equipment. In addition, the use of the first protrusion 1001 and the second protrusion 1101 can absorb part of the impact force generated by the collision, avoiding component wear due to frequent rigid impacts.

[0055] Furthermore, the rotating shaft 2 is a low-speed rotating shaft, and also includes: a sleeve 14 is rotatably arranged relative to the rotating shaft 2, and is sleeved on the rotating shaft 2; a driving member 15 is arranged on the rotating shaft 2 to drive the sleeve 14 to rotate; a stirring fan disk 16 is arranged at the bottom of the sleeve 14 and is coaxially arranged with the sleeve 14; one end of a spiral stirring rod 17 is fixedly connected to the top of the sleeve 14, and the other end is fixedly connected to the stirring fan disk 16, and a plurality of spiral stirring rods 17 are arranged along the circumference of the sleeve 14.

[0056] In this embodiment, in order to further improve the stirring effect, the rotating centrifugal force is used to generate a driving force for the filter discs 20 on both sides to move. After the slurry is pushed and hits the filter disc 20 unit, a certain wave peak will be formed. In this way, compared with the static slurry tank, the area of ​​the filter disc 20 unit that adsorbs the slurry can be increased to improve the filtering efficiency of the slurry. Therefore, a sleeve 14 driven by a driving member 15 in the form of an external motor is set on the rotating shaft 2 because the power of the low-speed rotating shaft 2 cannot form the required centrifugal effect.

[0057] Specifically, the stirring blade disk 16 is arranged at the bottom of the sleeve 14. When working, as the sleeve 14 rotates, it can produce a horizontal stirring effect on the slurry at the bottom of the slurry tank, so that the bottom slurry forms a circular flow to prevent the slurry from accumulating and settling at the bottom. At the same time, a number of spiral stirring rods 17 are arranged in a circle around the sleeve 14, and are connected from the top of the sleeve 14 to the stirring blade disk 16 at the bottom. During the rotation process, the spiral stirring rods 17 can not only stir the slurry around it in a circle as the sleeve 14 rotates, but also, due to the characteristics of the spiral structure, can push the slurry upward or downward along the spiral direction, thereby achieving full mixing of the slurry in the vertical direction, forming a centrifugal effect, and improving filtration efficiency and product quality.

[0058] A filter press includes the above-mentioned stirring unit, the base 1 is a vertical axis, and there are multiple bases 1, and also includes: a main shaft 19 is rotatably arranged in a shell 18, the main shaft 19 has multiple filter discs 20, the base 1 is fixedly connected to the shell 18, and the multiple bases 1 and filter discs 20 are alternately arranged in sequence along the axial direction of the main shaft 19, the axial direction of the main shaft 19 is perpendicular to the axial direction of the rotating shaft 2, the main shaft 19 and the rotating shaft 2 both have a bevel tooth portion 21, the bevel tooth portion 21 of the main shaft 19 is meshed with the bevel tooth portion 21 of the rotating shaft 2, and the main shaft 19 is used to drive the multiple rotating shafts 2 to rotate after rotating.

[0059] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A stirring unit, characterized in that: include: Matrix (1); A rotating shaft (2), the rotating shaft (2) being rotatably arranged relative to the base body (1) and sleeved on the base body (1), the rotating shaft (2) having a first meshing portion (201); A telescopic member (3), the telescopic member (3) being swingably disposed on the base (1) and located at one end of the rotating shaft (2), the telescopic member (3) comprising a telescopic end (301) and a second meshing portion (302), and after the rotating shaft (2) rotates, the first meshing portion (201) meshes with or disengages the second meshing portion (302), so as to drive the telescopic member (3) to swing back and forth; A scraper (4), the scraper (4) being arranged on the telescopic end (301), and the scraper (4) being used to scrape away the slurry on the inner wall of the slurry tank.

2. A stirring unit according to claim 1, characterized in that: The base (1) is arranged vertically, the telescopic member (3) is located at the bottom of the rotating shaft (2), the bottom of the rotating shaft (2) has the meshing portion 1 (201), and the meshing portion 1 (201) is a sector tooth, and further comprises: A swing shaft (5), the swing shaft (5) being rotatably arranged on the base (1), the axial direction of the swing shaft (5) being perpendicular to the axial direction of the rotating shaft (2), the number of the telescopic members (3), the two telescopic members (3) being both swingably arranged on the base (1) via the swing shaft (5), and the rotating shaft (2) being located between the two telescopic members (3).

3. A stirring unit according to claim 2, characterized in that: The telescopic member (3) has a second meshing portion (302) at the top, the second meshing portion (302) is a semicircular tooth, the scraper (4) is in the shape of an elongated strip, the two telescopic ends (301) are detachably connected to the scraper (4), and the center angle of the meshing portion (201) is less than 180°.

4. A stirring unit according to claim 3, characterized in that: The scraper (4) has an annular groove (401) at the top, and the two telescopic ends (301) are both arranged in the annular groove (401), and further comprises: Two toggle members (6), both of which are arranged stationary relative to the base (1), and two toggle members (6) are arranged on both sides of the base (1), respectively; after the telescopic member (3) swings to drive the scraper (4) to move, the two ends of the scraper (4) respectively abut against the two toggle members (6) to toggle the scraper (4) relative to the telescopic member (3) to slide along the path of the annular groove (401).

5. A stirring unit according to claim 4, characterized in that: The inner wall of the slurry tank is arc-shaped, the bottom of the scraper (4) has an arc-shaped groove (402), and further comprises: A plurality of scraping portions (7), wherein the plurality of scraping portions (7) are arranged in the arc-shaped groove (402) in a movable manner along a vertical direction, the bottom of the scraping portion (7) is exposed from the arc-shaped groove (402), the plurality of scraping portions (7) are arranged at intervals along the length direction of the arc-shaped groove (402), and the tops of the plurality of scraping portions (7) are adapted to the shape of the bottom of the arc-shaped groove (402).

6. A stirring unit according to claim 1, characterized in that: Also includes: Two pulp lifting members (8), both of which are swingably arranged on the base (1), and the rotating shaft (2) is located between the two pulp lifting members (8), and the pulp lifting members (8) are used to lift the ore pulp toward the filter disc after swinging, and the pulp lifting members (8) include: A pulp lifting arm (801), the pulp lifting arm (801) being swingably arranged on the base (1), the swinging axis of the pulp lifting arm (801) being perpendicular to the axis of the rotating shaft (2); A pulp lifting plate (802), wherein the pulp lifting plate (802) is swingably arranged on an end of the pulp lifting arm (801) away from the base body (1).

7. A stirring unit according to claim 6, characterized in that: The slurry lifting arm (801) has a swing axis parallel to the swing axis of the slurry lifting plate (802), and further comprises: A stop block (9), wherein the stop block (9) is arranged on one end of the pulp lifting arm (801) close to the pulp lifting plate (802), and is located on one side of the pulp lifting plate (802); the stop block (9) is arranged along the length direction of the pulp lifting arm (801); the pulp lifting plate (802) abuts against or cancels the abutment against the stop block (9) after swinging; and the stop block (9) is used to limit the swinging angle of the pulp lifting plate (802).

8. A stirring unit according to claim 6, characterized in that: Also includes: A ring body (10), the ring body (10) being arranged on the rotating shaft (2), the ring body (10) being coaxially arranged with the rotating shaft (2), and the top of the ring body (10) having a first protrusion (1001); A transmission block (11), the transmission block (11) being movably arranged relative to the rotating shaft (2), and being sleeved on the rotating shaft (2), and being located above the ring body (10), and having a second protrusion (1101) at the bottom of the transmission block (11); A connecting rod (12), wherein two ends of the connecting rod (12) are respectively hingedly connected to the pulp lifting arm (801) and the transmission block (11); an elastic member (13), the elastic member (13) being sleeved on the rotating shaft (2) and being located above the transmission block (11), one end of the elastic member (13) being in contact with the base body (1) and the other end being in contact with the transmission block (11), the elastic member (13) providing a force for the transmission block (11) to approach the ring body (10); Wherein, after the ring body (10) rotates along with the rotating shaft (2), the first protrusion (1001) lifts or cancels lifting of the transmission block (11) through the second protrusion (1101), so as to drive the pulp lifting arm (801) to swing.

9. A stirring unit according to claim 1, characterized in that: The rotating shaft (2) is a low-speed rotating shaft, and further comprises: a sleeve (14), the sleeve (14) being rotatably arranged relative to the rotating shaft (2) and sleeved on the rotating shaft (2); a driving member (15), the driving member (15) being arranged on the rotating shaft (2) and driving the sleeve (14) to rotate; a stirring blade disc (16), the stirring blade disc (16) being arranged at the bottom of the sleeve (14) and being coaxially arranged with the sleeve (14); A plurality of spiral stirring rods (17), one end of the spiral stirring rod (17) is fixedly connected to the top of the sleeve (14), and the other end is fixedly connected to the stirring fan disc (16), and the plurality of spiral stirring rods (17) are arranged along the circumference of the sleeve (14).

10. A filter press, comprising a stirring unit according to any one of claims 1 to 9, characterized in that: The base (1) is a vertical axis, and there are multiple bases (1), and further comprising: A housing (18) and a main shaft (19), wherein the main shaft (19) is rotatably arranged in the housing (18), the main shaft (19) has a plurality of filter discs (20), the base (1) is fixedly connected to the housing (18), and the plurality of bases (1) and the filter discs (20) are alternately arranged in sequence along the axial direction of the main shaft (19), the axial direction of the main shaft (19) is perpendicular to the axial direction of the rotating shaft (2), the main shaft (19) and the rotating shaft (2) both have a bevel tooth portion (21), the bevel tooth portion (21) of the main shaft (19) and the bevel tooth portion (21) of the rotating shaft (2) are meshed, and the main shaft (19) is used to drive the plurality of rotating shafts (2) to rotate after rotating.

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