Tar residue solid-liquid separation device

Abstract

The present application relates to solid-liquid separation device technical field, the present application provides a kind of tar residue solid-liquid separation device, it includes the feed pipe being equipped with in cylinder top, centrifugal cone net one rotates and is arranged in cylinder inside;Centrifugal cone net two is arranged in centrifugal cone net one inside, and form the interval of passing material between the inner wall of centrifugal cone net one, and the opening direction of centrifugal cone net two is opposite with the opening direction of centrifugal cone net one, scraper is arranged in the cylinder, it has scrape section one and scrape section two;In double-cone net filter structure, both rotate synchronously and opening is opposite, form the interval of passing material, can avoid solid phase accumulation, and make room for scraper, in same space, filter area is expanded to both inner walls, without increasing volume can improve processing capacity, and reduce energy consumption, and cone net structure reduces solid phase adhesion, reverse opening cooperates scraper, by the lifting of cone net changes and scraper abutment state, realizes cleaning without shutdown, simple structure, guarantee filtering effect and avoid shutdown loss.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of solid-liquid separation devices, and in particular, to a tar residue solid-liquid separation device. BACKGROUND

[0002] Tar residue is a viscous object generated in the production process of the coking industry, mainly composed of polycyclic aromatic hydrocarbon, benzene, phenol, naphthalene, and coal powder, coke powder, etc. Tar residue has corrosive and adhesive properties, and has a certain flowability at a certain temperature. If not stored properly, it can cause serious pollution to the surrounding environment and groundwater resources, so it needs to be effectively treated, basically through pretreatment and solid-liquid separation process. For the solid-liquid separation process, a centrifugal separator is often used.

[0003] The centrifugal separator mainly utilizes the centrifugal force field generated by the high-speed rotation of the drum to separate the solid phase from the liquid phase in the suspension. A conical drum is often used to achieve solid-liquid separation. Due to the guiding effect of the conical filter surface, the solid phase is not easily adhered to the filter surface, but can be thrown out from the large end opening of the conical drum for solid phase (tar dry residue) recovery, facilitating post-processing.

[0004] However, the above-mentioned conical centrifugal separator has the following disadvantages: in the case of large tar residue processing capacity, simply increasing the volume of the conical drum to increase the filter area will result in excessive equipment footprint and cannot guarantee energy consumption; whether it is backflushing or external force driven cleaning structure, the device needs to be stopped for cleaning and maintenance after a period of operation, which also makes the structure more complex. SUMMARY

[0005] To overcome the above-mentioned defects, embodiments of the present application provide a tar residue solid-liquid separation device, which solves the technical problem of how to fully utilize the filter area of the drum to improve the filtering efficiency while facilitating non-stop cleaning of the conical centrifugal separator in the related art under the premise of a certain device volume.

[0006] According to one aspect, at least one embodiment of the present application provides a tar residue solid-liquid separation device, comprising:

[0007] a cylinder, the cylinder being provided with a feed pipe at the top;

[0008] a centrifugal cone net one, the centrifugal cone net one being rotatable and vertically movable in the cylinder;

[0009] A second centrifugal conical screen is arranged in the first centrifugal conical screen and can rotate synchronously with the first centrifugal conical screen, a spacing is formed between the second centrifugal conical screen and the inner bottom wall of the first centrifugal conical screen, and the opening direction of the second centrifugal conical screen is opposite to that of the first centrifugal conical screen, and the feeding pipe penetrates the top wall of the second centrifugal conical screen downward and extends into the second centrifugal conical screen.

[0010] A scraper is arranged in the cylinder, the scraper has a first scraping section for cleaning the inner circumferential wall of the first centrifugal conical screen and a second scraping section for cleaning the inner circumferential wall of the second centrifugal conical screen.

[0011] The second centrifugal conical screen has a cleaning state and a filtering state, when the second centrifugal conical screen is in the cleaning state, the first scraping section abuts against the inner circumferential wall of the first centrifugal conical screen, and the second scraping section abuts against the inner circumferential wall of the second centrifugal conical screen, so that the scraper scrapes off solid substances.

[0012] When the second centrifugal conical screen is in the filtering state, the inner circumferential wall of the first centrifugal conical screen is separated from the first scraping section, and the inner circumferential wall of the second centrifugal conical screen is separated from the second scraping section, so as to filter tar residue.

[0013] For example, the present application provides at least one embodiment of a tar residue solid-liquid separation device, the first centrifugal conical screen gradually increases in cross-sectional area from bottom to top and is arranged with an upward opening, the second centrifugal conical screen gradually decreases in cross-sectional area from bottom to top and is arranged with a downward opening, and the first centrifugal conical screen and the second centrifugal conical screen are coaxially arranged.

[0014] For example, the present application provides at least one embodiment of a tar residue solid-liquid separation device, the feeding pipe is arranged on the top of the cylinder, the feeding pipe has a horizontal section extending horizontally, the horizontal section is slidingly connected to the inner top wall of the second centrifugal conical screen, so that the pipe opening of the feeding pipe faces the inner top wall of the second centrifugal conical screen and can drive the second centrifugal conical screen to ascend and descend.

[0015] For example, the present application provides at least one embodiment of a tar residue solid-liquid separation device, the first centrifugal conical screen can drive the second centrifugal conical screen to descend synchronously after ascending, so that the first scraping section abuts against the inner wall of the first centrifugal conical screen and the second scraping section abuts against the inner wall of the second centrifugal conical screen.

[0016] For example, the present application provides at least one embodiment of a tar residue solid-liquid separation device, the inner top wall of the second centrifugal conical screen is further provided with a connecting column penetrating the inner bottom wall of the first centrifugal conical screen, and the connecting column is slidingly matched with the first centrifugal conical screen, so that the second centrifugal conical screen can rotate synchronously with the first centrifugal conical screen.

[0017] For example, the tar residue solid-liquid separation device provided by at least one of the embodiments of the present application, the outer wall of the connecting column is further sleeved with an elastic member one, two ends of the elastic member one are respectively connected to the inner top wall of the centrifugal cone net one and the inner bottom wall of the centrifugal cone net two one by one, so as to provide a force for the centrifugal cone net one and the centrifugal cone net two to move away from each other and be separated from the scraping section one and the scraping section two respectively.

[0018] For example, the tar residue solid-liquid separation device provided by at least one of the embodiments of the present application, the inner bottom of the barrel is rotationally provided with a rotating shaft penetrating the inner bottom wall of the centrifugal cone net one, the top of the rotating shaft has a protruding end, the protruding end is provided with a wedge back-pulling part and is located between the centrifugal cone net one and the centrifugal cone net two, the top and the bottom of the wedge back-pulling part are provided with back-pulling inclined surfaces, the two back-pulling inclined surfaces are symmetrically arranged and are provided with sliding grooves, the centrifugal cone net one and the centrifugal cone net two are respectively and correspondingly slidingly connected in the two sliding grooves.

[0019] When the rotating shaft is positively rotated to the centrifugal cone net one and the centrifugal cone net two are pressed against the inner wall of one end of the sliding groove, the centrifugal cone net one and the centrifugal cone net two move close to each other and positively rotate with the rotating shaft.

[0020] When the rotating shaft is reversely rotated to the centrifugal cone net one and the centrifugal cone net two are pressed against the inner wall of the other end of the sliding groove, the centrifugal cone net one and the centrifugal cone net two move away from each other and reversely rotate with the rotating shaft.

[0021] For example, the tar residue solid-liquid separation device provided by at least one of the embodiments of the present application, the inner wall of the barrel has a cylindrical groove, the centrifugal cone net one is provided with a limiting ring at the opening, the limiting ring is nested in the cylindrical groove and is slidingly matched with the barrel.

[0022] For example, the tar residue solid-liquid separation device provided by at least one of the embodiments of the present application, the barrel comprises an outer barrel and an inner barrel arranged in the outer barrel, the centrifugal cone net one is rotationally and vertically arranged in the inner barrel, a liquid recovery cavity is formed between the outer wall of the centrifugal cone net one and the inner wall of the inner barrel, and a solid phase recovery cavity is formed between the outer wall of the inner barrel and the inner wall of the outer barrel.

[0023] For example, the tar residue solid-liquid separation device provided by at least one of the embodiments of the present application, the top end of the outer barrel is provided with an end cover, the end cover is provided with an exhaust port, and the feeding pipe penetrates the end cover.

[0024] The embodiments of the present application have the following beneficial effects:

[0025] Firstly, the double-cone screen filtering structure is adopted, the first centrifugal cone screen rotates and is arranged in the cylinder, the second centrifugal cone screen is arranged in the first centrifugal cone screen and can rotate at a high speed with the first centrifugal cone screen to separate solid and liquid, the opening directions of the two are opposite, a filtering interval is formed between the two, solid accumulation between the two is avoided, a channel is provided for solid and liquid flow, the scraper is provided with a space, and the scraper can normally play a cleaning role; the filtering area of the traditional single-cone rotating drum is expanded to the inner wall of the first centrifugal cone screen and the inner wall of the second centrifugal cone screen in the same cylinder space, the effective filtering area in a unit volume is increased, the overall volume of the equipment does not need to be increased in a large processing capacity scene, and energy consumption is reduced.

[0026] At the same time, compared with the general cylinder screen structure, the solid phase material is thrown away from the cone screen under the action of centrifugal force instead of adhering to the inner wall of the cone screen, the cleaning period is lengthened, and the double-cone screens with opposite openings can fully utilize all filtering areas under high-speed rotation, that is, after the solid phase material is separated by the filtering surface, the solid phase material gradually passes through the filtering interval and is finally thrown out by the first centrifugal cone screen for unified collection, and the collection function of the solid phase material is ensured instead of low utilization rate of the filtering area of the overlapping part like the same opening.

[0027] The double-cone screens can also adopt filter screen structures with different filtering capacities, that is, the filtering effect of the outer cone screen is stronger than that of the inner cone screen, so that the filtering efficiency is further improved, and the inner cone screen is prevented from being quickly attached with solid phase material inside to affect the overall filtering effect.

[0028] Secondly, the opposite openings of the double-cone screens can cooperate with the scraper to realize cleaning without stopping, the double-cone screens are lifted in the high-speed rotating working state to control the abutment state with the scraper, the filtering state and the cleaning state can be freely switched without stopping, the relative movement between the scraper and the rotating cone screen is utilized in the cleaning state to remove the solid phase impurities attached to the filtering surface in real time and discharge the solid phase impurities under the guidance of the cone surface, the cleaning effect is ensured, the efficiency loss caused by stopping and maintaining is avoided, the overall structure is simple, and no additional complex driving assembly is needed. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced. Obviously, the drawings in the following description are only some example embodiments of the present application. Other drawings can be obtained according to the contents of the example embodiments of the present application and the drawings by those skilled in the art without creating any creative labor.

[0030] Figure 1 It is a sectional view of a tar residue solid-liquid separation device in an embodiment of the present application;

[0031] Figure 2 Figure 1 is a schematic diagram of the internal structure of a cylinder according to an embodiment of the present disclosure; Figure 1 Figure 2 is a schematic diagram of the cleaning state of a centrifugal cone net according to an embodiment of the present disclosure;

[0032] Figure 3 Figure 3 is a schematic diagram of the internal structure of a cylinder according to another embodiment of the present disclosure;

[0033] Figure 4 Figure 4 is a schematic diagram of the cleaning state of a centrifugal cone net according to another embodiment of the present disclosure; Figure 3 Figure 5 is an enlarged view of part A in Figure 4;

[0034] Figure 5 Figure 6 is a schematic diagram of the structure of a wedge back-pulling part according to an embodiment of the present disclosure; Figure 3 Figure 7 is a schematic diagram of the structure of a wedge back-pulling part according to another embodiment of the present disclosure;

[0035] Figure 6 Figure 8 is an enlarged view of part B in Figure 7; Figure 5

[0036] Figure 9 is an enlarged view of part C in Figure 7; Figure 7 Figure 5 Figure 10 is an enlarged view of part D in Figure 7.

[0037] In the drawings: 1, cylinder; 101, outer cylinder; 102, inner cylinder; 103, liquid recovery cavity; 104, solid phase recovery cavity; 105, cylindrical groove; 2, feed pipe; 201, horizontal section; 3, centrifugal cone net one; 4, centrifugal cone net two; 5, material passing interval; 6, scraper; 601, scraping section one; 602, scraping section two; 7, rotating shaft; 701, insertion end; 8, limiting ring; 10, connecting column; 11, elastic member one; 12, wedge back-pulling part; 1201, back-pulling inclined surface; 1202, chute; 15, end cover; 1501, exhaust port; 16, pipeline; 18, vertical rod one; 19, vertical rod two. DETAILED DESCRIPTION

[0038] The present application will be further described below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are merely intended to explain the present application, but not to limit the present application.

[0039] In order to make the drawings simple, only the parts related to the disclosure are shown in each drawing, which does not represent the actual structure of the product. In addition, in order to make the drawings simple and easy to understand, in some drawings, only one of the parts with the same structure or function is shown schematically, or only one of them is marked. In this text, “one” not only means “only one”, but also means “more than one”, and “several” includes “two” and “more than two”.

[0040] ​In this document, unless otherwise indicated and limited, the terms "mount", "connect", "connection" should be understood broadly, for example, it can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through intermediate medium, can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] In the present application, unless otherwise specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "above" and "on" of the first feature to the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "under" and "under" of the first feature to the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0042] In the description of the present embodiment, the orientation or position relationship of the terms "upper", "lower", "left", "right" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0043] In addition, in the description of the present application, the terms "first", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0044] As Figure 1As shown, it shows a tar residue solid-liquid separation device in an embodiment of the present application, including a circular cylinder 1 as a whole support frame structure, which is internally mounted with feed pipe 2, centrifugal cone net one 3, centrifugal cone net two 4 and scraper 6 and other components, which can be composed of welded or bolted inner cylinder 102 and outer cylinder 101, inner cylinder 102 is arranged in outer cylinder 101, centrifugal cone net one 3, centrifugal cone net two 4 and scraper 6 and other components are arranged in inner cylinder 102, so that the liquid phase material filtered out by the cone net is collected in inner cylinder 102 (liquid recovery cavity 103 is formed between the outer wall of centrifugal cone net one 3 and the inner wall of inner cylinder 102), and finally recycled to the outside of outer cylinder 101 through pipeline 16 at the bottom end of inner cylinder 102, pipeline 16 penetrates the bottom of outer cylinder 101, which can be sealed and connected by flange, at the same time, it is convenient to collect the solid phase material thrown out by the cone net in outer cylinder 101 (solid phase recovery cavity 104 is formed between the outer wall of inner cylinder 102 and the inner wall of outer cylinder 101), and finally falls from the bottom end of outer cylinder 101 under the action of gravity to recycle "dry residue"; further, the end cover 15 can be hingedly arranged at the top end of outer cylinder 101, which can be driven by a gas cylinder to facilitate workers to open the cover for maintenance, and to provide stable support for the feed pipe 2 feeding into the centrifugal cone net two 4, the feed pipe 2 can also be sealed and connected with the end cover 15 by flange, and the exhaust port 1501 is further arranged on the end cover 15 to balance the internal and external air pressure and release the excess gas in the separation device.

[0045] Regarding the feed pipe 2, it is preferred that the pipe opening of the feed pipe 2 faces the inner top wall of the centrifugal cone net two 4, so that during the working centrifugation process, the solid phase material first starts to adhere to the inner top wall of the centrifugal cone net two 4 and gradually moves down, making full use of the filtering area of the centrifugal cone net two 4.

[0046] The centrifugal cone net one 3 can rotate around its vertical axis (a matching external drive motor and belt / coupling can be provided to transmit power to the central shaft of the centrifugal cone net one 3; and the lifting can be additionally configured on the lifting frame; the lifting and rotating drive mechanism of the centrifugal cone net two 4 is the same), which adopts a conical cylindrical wire mesh structure with a cross-sectional area gradually changing along its vertical axis, and the centrifugal cone net two 4 is the same, a material passing interval 5 is formed between the inner wall of the centrifugal cone net two 4 and the centrifugal cone net one 3, which facilitates the passage of solid and liquid phases and prevents accumulation, and the openings of the two are opposite (it is worth mentioning that the opening of the centrifugal cone net is generally the end with the largest cross-sectional area, which can have the effect of centrifugally throwing out the separated solid phase material, hereinafter referred to as the large end); for example, the large end of the centrifugal cone net one 3 opens upward, and the large end of the centrifugal cone net two 4 opens downward, or the large end of the centrifugal cone net one 3 opens downward, and the large end of the centrifugal cone net two 4 opens upward.

[0047] Preferably, the large end of the centrifugal cone net 3 is opened upward, and the large end of the centrifugal cone net 4 is opened downward, because the outer centrifugal cone net 3 needs to ensure that the solid-phase material can be smoothly thrown and recovered, and is convenient to connect with the power component without affecting the feeding. The second way is to ensure the function of recovering the solid-phase material, and the large end of the centrifugal cone net cannot have any blocking components around it. In order to smoothly connect with the power component, the central shaft of the centrifugal cone net 3 may interfere with the feeding pipe 2 located in the center, thereby causing the structure to be complicated.

[0048] In addition, the centrifugal cone net 4 can rotate synchronously with the centrifugal cone net 3, and a through rod can be connected between the two to drive the other centrifugal cone net to rotate synchronously under the action of the through rod, thereby simplifying the driving structure.

[0049] The lifting structure of the centrifugal cone net 4 can also be further simplified, and the feeding pipe 2 can be used to drive the centrifugal cone net 4 to lift. Specifically, the feeding pipe 2 can be lifted by screwing at the top center of the cylinder 1. Since the pipe opening of the feeding pipe 2 is preferably directed toward the inner bottom wall of the centrifugal cone net 4, a horizontal section 201 near the pipe opening of the feeding pipe 2 is slidably connected to the inner bottom wall of the centrifugal cone net 4 (for example, an annular protrusion is integrally formed on the inner bottom wall of the centrifugal cone net 4, and the annular protrusion is slidably connected in the corresponding groove of the horizontal section 201, which can be T-shaped or L-shaped, etc.). The scraping section 601 is located above the inner wall of the centrifugal cone net 3, and the scraping section 602 is located below the inner wall of the centrifugal cone net 4. Thus, under artificial external force, the feeding pipe 2 can be twisted to adjust the height of the centrifugal cone net 4, so that it is lowered to press the scraper 6, and the scraper 6 is further controlled to be lowered, so that the scraping section 601 abuts against the inner wall of the centrifugal cone net 3, and the scraping section 602 abuts against the inner wall of the centrifugal cone net 4. This process is completed by cleaning the normally rotating double cone nets (a connecting rod can be welded or detached between the centrifugal cone net 3 and the centrifugal cone net 4 to enable the centrifugal cone net 4 to normally rotate at high speed with the centrifugal cone net 3). In addition, the double cone nets and the scraper 6 (especially the scraper 6) need to have wear-resistant properties under the condition of sliding connection, such as using alloy materials to improve the service life. It is further found that the sliding connection form causes greater wear and tear on the inner bottom wall of the feeding pipe 2 and the centrifugal cone net 4 because of the larger contact area of sliding friction. In order to reduce wear and tear, improve the service life, and normally achieve the above-mentioned actions, the sliding connection can be changed to roller connection.

[0050] Further, regarding the cleaning structure, the scraper 6 is fixed in the cylinder body 1, specifically, welded or detachably connected to the inner wall of the inner cylinder 102, and the inclined scraping section one 601 and the inclined scraping section two 602 are sequentially connected thereon, which correspond to the inner walls of the two conical screens respectively. The scraping section one 601 is located inside the inner peripheral wall of the centrifugal conical screen one 3, and the scraping section two 602 is located inside the inner peripheral wall of the centrifugal conical screen two 4. In the centrifugal cleaning process, the relative movement between the scraper 6 and the rotating conical screen can be used to remove the solid impurities attached to the filter surface in real time and discharge them under the guidance of the conical surface. In order to realize the state switching under non-stop, that is, the high-speed rotation of the double conical screens, the scraper 6 can be in contact or not in contact with the double conical screens. Therefore, the centrifugal conical screen two 4 is lifted in the centrifugal conical screen one 3, and the active lifting mechanism (such as a hydraulic cylinder or a screw nut pair, Figure 1 (not shown in the specification), is used to actively change the distance between the double conical screens and the scraper 6, so as to realize the free switching of the filtering state and the cleaning state, and the structure is simple and easy to maintain.

[0051] In order to simplify the overall structure and reduce the driving structure, the following method can be used to change the distance between the double conical screens and the scraper 6: the power component can normally drive one of the conical screens to rotate and lift, and the lifting of the conical screen will drive the other conical screen to move in the opposite direction, that is, the double conical screens can be synchronously close to each other or away from each other. The above process is realized by the forward and reverse rotation of the power component.

[0052] Specifically, as shown in Figures 2-7 , a gap is provided between the horizontal section 201 and the inner bottom wall of the centrifugal conical screen two 4 to avoid friction. For the driving structure, a vertical rotating shaft 7 (which can be driven by an external motor) for driving the centrifugal conical screen one 3 to rotate is arranged to rotate in the inner cylinder 102. In order to realize the movement of the double conical screens towards each other or away from each other and the connection with the vertical rotating shaft 7 for normal rotation, the inner bottom wall of the centrifugal conical screen one 3 is sleeved on the rotating shaft 7 in a gap fit, and the large end of the centrifugal conical screen one 3 is rotatably and liftably fitted in the inner wall of the cylinder body 1. Specifically, the large end of the centrifugal conical screen one 3 can adopt an annular structure (that is, a limiting ring 8 integrally formed at the opening of the centrifugal conical screen one 3), which is embedded in the cylindrical groove 105 in the inner wall of the inner cylinder 102, so that it has the freedom of rotation and lifting.

[0053] Meanwhile, the double-cone screen is connected by the connecting column 10 and the elastic member 11, and the vertical connecting column 10 is welded at the top end and is slidably connected to the inner bottom wall of the centrifugal cone screen 1, and the outer wall of the vertical connecting column 10 is sleeved with the elastic member 11, and the two ends of the elastic member 11 are connected to the inner bottom wall of the centrifugal cone screen 1 and the inner top wall of the centrifugal cone screen 2 respectively, so as to provide the centrifugal cone screen 1 and the centrifugal cone screen 2 with a force of moving away from each other, so as to be separated from the scraper 1 and the scraper 2 respectively; in addition, the scraper 1 and the scraper 2 are fixed, and then under the action of the elastic member 11 and without external force, the centrifugal cone screen 1 is lowered to the low position of the cylindrical groove 105, and the centrifugal cone screen 2 is raised, so that the double-cone screen is automatically in the filtering state.

[0054] In order to switch to the cleaning state and realize power transmission, the wedge-shaped wedge block 12 is welded at the top end of the vertical rotating shaft 7, and the wedge-shaped wedge block 12 is located between the centrifugal cone screen 1 and the centrifugal cone screen 2, and the thickness of the wedge-shaped wedge block 12 gradually changes along the circular arc path, that is, the top and bottom of the wedge-shaped wedge block 12 are provided with symmetrical wedge surfaces 1201, and the wedge surfaces 1201 are slidably connected to the double-cone screen, so as to realize that the wedge-shaped wedge block 12 and the double-cone screen are pulled back to abut against the scraper 6, so as to change the state.

[0055] Specifically, the vertical connecting column 10 is welded on the inner bottom wall of the centrifugal cone screen 1, and the vertical connecting column 10 is welded on the corresponding position of the inner top wall of the centrifugal cone screen 2, and the two are slidably connected in the sliding groove 1202 of the wedge surface 1201 by T-shaped blocks or other similar structures, so as to prevent disconnection and cause power failure, and the vertical rotating shaft 7 is positively rotated to drive the wedge-shaped wedge block 12 to rotate to the left end wall of the sliding groove 1202, so that the double-cone screen is pulled back under the action of the elastic member 11 and the guidance of the sliding connection and the wedge surface 1201, and the two are close to each other and abut against the scraper 6, and then the vertical rotating shaft 7 is continuously positively rotated to drive the double-cone screen to be positively rotated in the cleaning state; subsequently, the vertical rotating shaft 7 is reversely rotated to drive the wedge-shaped wedge block 12 to rotate to the right end wall of the sliding groove 1202, so that the double-cone screen is again expanded under the action of the elastic member 11 and the guidance of the sliding connection and the wedge surface 1201, and the two are away from each other and are separated from the scraper 6, and then the vertical rotating shaft 7 is continuously reversely rotated to drive the double-cone screen to be reversely rotated in the filtering state.

[0056] In the filtering stage of the device, the tar residue is sent into the centrifugal cone screen 2 by the feeding pipe 2, the centrifugal cone screen 1 is driven to rotate by the power source, and the centrifugal cone screen 2 rotates synchronously (in the filtering state, the double-cone screen is separated from the scraper 6), under the action of the centrifugal force, the liquid material passes through the double-cone screen to the liquid recovery cavity 103, and is discharged through the pipeline 16; at the same time, the solid material is intercepted, some of the solid material is thrown to the solid recovery cavity 104 for recovery, and the remaining solid material adheres to the inner wall of the cone screen.

[0057] Device cleaning phase: when the solid phase material attached to the inner wall of the conical screen affects the working efficiency, control the double conical screen lifting, make the scraping section one 601 abut the inner wall of the centrifugal conical screen one 3, the scraping section two 602 abut the inner wall of the centrifugal conical screen two 4, use the relative motion of the conical screen rotation and the scraper 6, the solid phase material is scraped down, and is thrown to the solid phase recovery cavity 104 under the centrifugal effect to carry out recovery, reset after cleaning, return to the filtering state again, the whole process does not need to stop.

[0058] It should be noted that the above examples are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A tar residue solid-liquid separation device, characterized in that: include: A cylinder (1), wherein a feed pipe (2) is provided at the top of the cylinder (1); A centrifugal cone net (3) is provided in the cylinder (1) so as to rotate and be lifted and lowered; Centrifugal cone net 2 (4), the centrifugal cone net 2 (4) is lifted and arranged in the centrifugal cone net 1 (3), and can follow the centrifugal cone net 1 (3) to rotate synchronously, a material passing gap (5) is formed between the centrifugal cone net 2 (4) and the inner bottom wall of the centrifugal cone net 1 (3), and the opening direction of the centrifugal cone net 2 (4) is opposite to the opening direction of the centrifugal cone net 1 (3), and the feed pipe (2) passes through the top wall of the centrifugal cone net 2 (4) downward and extends into the centrifugal cone net 2 (4); A scraper (6), the scraper (6) being arranged in the cylinder (1), the scraper (6) comprising a scraper section 1 (601) for cleaning the inner peripheral wall of the centrifugal cone net 1 (3) and a scraper section 2 (602) for cleaning the inner peripheral wall of the centrifugal cone net 2 (4); The centrifugal cone screen 2 (4) has a cleaning state and a filtering state. When the centrifugal cone screen 2 (4) is in the cleaning state, the scraping section 1 (601) abuts against the inner peripheral wall of the centrifugal cone screen 1 (3), and the scraping section 2 (602) abuts against the inner peripheral wall of the centrifugal cone screen 2 (4), so that the scraper (6) scrapes off the solid phase material. When the centrifugal cone net 2 (4) is in a filtering state, the inner peripheral wall of the centrifugal cone net 1 (3) is separated from the scraping section 1 (601), and the inner peripheral wall of the centrifugal cone net 2 (4) is separated from the scraping section 2 (602) to filter the tar residue; The cross-sectional area of ​​the centrifugal cone net 1 (3) gradually increases from bottom to top, and the opening is arranged upward, the cross-sectional area of ​​the centrifugal cone net 2 (4) gradually decreases from bottom to top, and the opening is arranged downward, and the centrifugal cone net 1 (3) and the centrifugal cone net 2 (4) are coaxially arranged; After the centrifugal cone net 1 (3) rises, it can synchronously drive the centrifugal cone net 2 (4) to fall, so that the scraping section 1 (601) abuts against the inner wall of the centrifugal cone net 1 (3), and the scraping section 2 (602) abuts against the inner wall of the centrifugal cone net 2 (4).

2. A tar residue solid-liquid separation device according to claim 1, characterized in that: The feed pipe (2) is arranged at the top of the cylinder (1) for lifting. The feed pipe (2) has a horizontal section (201) extending horizontally. The horizontal section (201) is slidably connected to the inner top wall of the second centrifugal cone net (4) so ​​that the pipe mouth of the feed pipe (2) faces the inner top wall of the second centrifugal cone net (4) and can drive the second centrifugal cone net (4) to rise and fall.

3. The tar residue solid-liquid separation device according to claim 1, characterized in that: A connecting column (10) is also provided on the inner top wall of the centrifugal cone net 2 (4) and passes through the inner bottom wall of the centrifugal cone net 1 (3), and the connecting column (10) is slidably fitted with the centrifugal cone net 1 (3) so that the centrifugal cone net 2 (4) can follow and rotate synchronously with the centrifugal cone net 1 (3).

4. A tar residue solid-liquid separation device according to claim 3, characterized in that: The outer wall of the connecting column (10) is also provided with an elastic member 1 (11), and the two ends of the elastic member 1 (11) are respectively connected to the inner top wall of the centrifugal cone net 1 (3) and the inner bottom wall of the centrifugal cone net 2 (4) in a one-to-one correspondence, so as to provide a force for the centrifugal cone net 1 (3) and the centrifugal cone net 2 (4) to move away from each other and to separate from the scraping segment 1 (601) and the scraping segment 2 (602).

5. The tar residue solid-liquid separation device according to claim 4, characterized in that: The bottom of the cylinder (1) is provided with a rotating shaft (7) which penetrates the inner bottom wall of the centrifugal cone net 1 (3), and the top of the rotating shaft (7) has an insertion end (701), and the insertion end (701) is provided with a wedge pull-back portion (12) and is located between the centrifugal cone net 1 (3) and the centrifugal cone net 2 (4), and the top and bottom of the wedge pull-back portion (12) both have pull-back inclined surfaces (1201), and the two pull-back inclined surfaces (1201) are symmetrically arranged and both have sliding grooves (1202), and the centrifugal cone net 1 (3) and the centrifugal cone net 2 (4) are respectively slidably connected in the two sliding grooves (1202); wherein, after the rotating shaft (7) rotates forward until the centrifugal cone net 1 (3) and the centrifugal cone net 2 (4) are both pressed against the inner wall of one end of the chute (1202), the centrifugal cone net 1 (3) and the centrifugal cone net 2 (4) approach each other and rotate forward following the rotating shaft (7); After the rotating shaft (7) is reversed until the centrifugal cone net 1 (3) and the centrifugal cone net 2 (4) are both pressed against the inner wall of the other end of the slide groove (1202), the centrifugal cone net 1 (3) and the centrifugal cone net 2 (4) move away from each other and reverse along with the rotating shaft (7).

6. The tar residue solid-liquid separation device according to claim 1, characterized in that: The inner wall of the cylinder (1) has a cylindrical groove (105), and a limiting ring (8) is provided at the opening of the centrifugal cone net (3). The limiting ring (8) is nested in the cylindrical groove (105) and is slidably matched with the cylinder (1).

7. The tar residue solid-liquid separation device according to claim 1, characterized in that: The cylinder (1) comprises an outer cylinder (101) and an inner cylinder (102) arranged in the outer cylinder (101); the centrifugal cone net (3) is arranged in the inner cylinder (102) to rotate and rise and fall; a liquid recovery chamber (103) is formed between the outer wall of the centrifugal cone net (3) and the inner wall of the inner cylinder (102); and a solid phase recovery chamber (104) is formed between the outer wall of the inner cylinder (102) and the inner wall of the outer cylinder (101).

8. The tar residue solid-liquid separation device according to claim 7, characterized in that: An end cover (15) is provided at the top end of the outer cylinder (101), the end cover (15) having an exhaust port (1501), and the feed pipe (2) passes through the end cover (15).

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