Coal pitch tar treatment device

Abstract

The invention is applicable to the technical field of tar treatment, and provides a coal pitch tar treatment device, which comprises a heat preservation outer tank, and a pretreatment inner tank, a material gathering guide hopper, an external expansion guide hopper and an annular filter plate which are arranged in the heat preservation outer tank, an opening is formed in the bottom of the inner pretreatment tank, the top of the inner pretreatment tank is fixedly connected with the inner wall of the top of the outer heat preservation tank, the material gathering and guiding hopper is fixedly installed at the bottom of the inner pretreatment tank and used for guiding and gathering tar, and the outer edge of the material gathering and guiding hopper is fixedly connected with the inner wall of the outer heat preservation tank. According to the coal pitch tar treatment device provided by the scheme, the design of the annular filter plate and the plurality of rows of filter holes is adopted, so that the filter area is effectively increased, and the tar filter efficiency is improved; meanwhile, a plurality of groups of dredging mechanisms are arranged, so that the blocked filtering holes can be timely cleaned, and the filtering channel is kept unblocked; the solid impurity content of the coal tar subjected to fine filtration is greatly reduced, and the quality of the finished fuel oil product is effectively improved.

Description

Technical Field

[0001] The invention belongs to the technical field of tar processing, and in particular relates to a coal pitch tar processing device. Background Art

[0002] Coal tar is a product obtained by processing coal tar. During the coal coking process, coal is heated to high temperatures and undergoes a series of chemical reactions to produce a liquid called coal tar.

[0003] In the process of catalytic hydrogenation of coal tar to produce fuel oil products, since coal tar contains a certain amount of water, metal and solid impurities, it will cause serious harm to the hydrogenation production equipment and pipelines, hydrogenation catalysts and product quality. Therefore, in the process of coal tar hydrogenation reformation to produce fuel oil products, coal tar needs to be purified and pretreated. The density of coal tar varies according to the temperature.

[0004] After searching, the patent document with the authorization announcement number CN217140103U is found. It mainly solves the problem that the presence of solid impurities in tar causes equipment corrosion and scaling on the inner wall of the equipment, thereby affecting the quality of the finished oil. After the existing coal tar pretreatment device is used, the solid impurities in the coal tar easily clog the filter, reducing the filtration efficiency of the coal tar. Workers need to spend a long time cleaning the filter, increasing the labor intensity of the workers and reducing the filtration efficiency.

[0005] However, the filter cleaning method adopts a bottom scraper to scrape the surface of the annular filter to achieve cleaning. This cleaning method easily causes impurities to be squeezed into the mesh of the filter as the scraper squeezes, or even penetrates the filter, making the filtering effect not good. Summary of the Invention

[0006] The present invention provides a coal tar tar processing device, which aims to solve the problem that the tar processing device currently used, proposed in the above-mentioned background technology, adopts a filter screen for filtration and a scraper to scrape the surface of the filter screen to clear it, which easily causes impurities to be squeezed into the mesh of the filter screen by the extrusion of the scraper, and even pass through the filter screen, resulting in poor filtering effect.

[0007] To solve the above problems, the present invention is implemented as follows: a coal tar tar processing device comprises: an insulated outer tank and a pretreatment inner tank, a material gathering guide hopper, an outward expansion guide hopper and an annular filter plate arranged in the insulated outer tank; the bottom of the pretreatment inner tank is open, and the top is fixedly connected to the top inner wall of the insulated outer tank, the material gathering guide hopper is fixedly installed at the bottom of the pretreatment inner tank for guiding and collecting the coal oil, the outer edge of the material gathering guide hopper is fixedly connected to the inner wall of the insulated outer tank, the outward expansion guide hopper is arranged below the material gathering guide hopper, the outer edge of the outward expansion guide hopper is fixedly connected to the inner wall of the insulated outer tank, the annular filter plate is fixedly installed in the outward expansion guide hopper, and the annular filter plate is provided with a plurality of rows of filter holes arranged in an annular manner for filtering the tar discharged from the material gathering guide hopper; a plurality of groups of dredging mechanisms are distributed in an annular array on the bottom inner wall of the insulated outer tank, and are respectively arranged corresponding to the positions of the plurality of rows of filter holes, for dredging the filter holes on the annular filter plate from bottom to top.

[0008] Preferably, an annular heating chamber is separated between the interior of the insulation outer tank, the exterior of the pretreatment inner tank and the aggregate hopper, and the heating chamber is provided with a spiral heating coil surrounding the pretreatment inner tank for heating the pretreatment inner tank and the internal tar.

[0009] Preferably, an impurity gathering area is formed between the lower portion of the material gathering hopper, the inclined surface of the outward-expanding material guiding hopper, and the inner wall of the heat-insulating outer tank, for gathering impurities filtered by the annular filter plate.

[0010] Preferably, a liquid collecting area is formed between the lower portion of the outward-expanding guide hopper and the annular filter plate and the bottom inner wall of the heat-insulating outer tank, for collecting the filtered tar.

[0011] Preferably, a feed pipe is fixedly installed on the top of the heat-insulating outer tank, and a discharge pipe is fixedly installed on the bottom. The feed pipe is connected to the pretreatment inner tank, and the discharge pipe is connected to the liquid gathering area.

[0012] Preferably, the dredging mechanism includes a T-shaped guide rod, a U-shaped slide, a spring, a strip plate and multiple dredging rods. The T-shaped guide rod is arranged in the liquid gathering area and fixedly connected to the bottom inner wall of the heat-insulating outer tank. The U-shaped slide and the spring are both slidably mounted on the T-shaped guide rod. The two ends of the spring respectively conflict with the top expanded end of the T-shaped guide rod and the U-shaped slide. The strip plate is fixedly mounted on the top of the U-shaped slide. The strip plate is corresponding to a corresponding row of filter holes. Multiple dredging rods are fixedly mounted on the top of the strip plate. Multiple dredging rods are corresponding to a corresponding row of filter holes. The length and diameter of the dredging rod are less than or equal to the aperture length and diameter of the filter hole, and are used to dredge the filter hole from bottom to top.

[0013] The filter mechanism of claim 1, wherein the upper filter housing is rotatably mounted on the filter housing, and the lower filter housing is rotatably mounted on the filter housing, wherein the lower filter housing is located at a position adjacent to the filter housing, and the filter housing is located adjacent to the filter housing.

[0014] The axle up and down groove at two ends embeds respectively in two guide rails up and down of being made up of the groove on the attachment piece, and the tooth on the attachment piece is meshed with tooth on upper sprocket wheel, the lower sprocket.

[0015] Preferably, a drive motor is fixedly installed on the top of the insulation outer tank, the output shaft of the drive motor movably extends into the pretreatment inner tank and is fixedly installed with a stirring rod, and the bottom end of the stirring rod is fixedly connected to the top of the upper rotating cover.

[0016] Preferably, a slow-flow guide plate is fixedly mounted on the top inner wall of the pretreatment inner tank, and the slow-flow guide plate is located below the feed pipe and is used to guide the tar to the inner wall of the pretreatment inner tank.

[0017] Compared with related technologies, the coal pitch tar processing device provided by the present invention has the following beneficial effects:

[0018] Compared with the existing technology, this solution effectively increases the filtration area and improves the tar filtration efficiency by adopting the design of an annular filter plate and multiple rows of filter holes; at the same time, the setting of multiple groups of dredging mechanisms can promptly clear the clogged filter holes and keep the filtration channel unobstructed; the solid impurity content of the coal tar after fine filtration is greatly reduced, which effectively improves the quality of the finished fuel oil and reduces the risk of equipment corrosion and scaling of the inner wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the main three-dimensional structure of a coal pitch tar processing device provided by the present invention;

[0020] Figure 2 This is a schematic diagram of the main structure of a coal pitch tar processing device provided by the present invention;

[0021] Figure 3 This is a schematic diagram of the main cross-sectional structure of a coal pitch tar processing device provided by the present invention;

[0022] Figure 4 for Figure 3 Schematic diagram of the enlarged structure of part A shown in FIG;

[0023] Figure 5 for Figure 3 Schematic diagram of the enlarged structure of part B shown in FIG;

[0024] Figure 6 for Figure 5 Schematic diagram of the enlarged structure of part C shown in ;

[0025] Figure 7 for Figure 3 Schematic diagram of the enlarged structure of part D shown in FIG;

[0026] Figure 8 for Figure 7 Schematic diagram of the enlarged structure of part E shown in FIG;

[0027] Figure 9 This is a schematic diagram of the structure of the pretreatment inner tank and the spiral heating coil in the present invention;

[0028] Figure 10 It is a structural schematic diagram of the aggregate material guide hopper, the outward-expanding guide hopper, the annular filter screen and the rotary scraping mechanism in the present invention;

[0029] Figure 11 This is a schematic structural diagram of the external expansion guide hopper, annular filter screen and rotary scraping mechanism in the present invention;

[0030] Figure 12 Schematic diagram of the distribution structure of a group of dredging mechanisms and rotary scraping mechanisms in the present invention;

[0031] Figure 13 It is a schematic structural diagram of the protective inner cover part of the present invention.

[0032] Reference numerals: 1, insulation outer tank; 2, pretreatment inner tank; 3, material gathering hopper; 4, outward expansion hopper; 5, annular filter plate; 6, filter hole; 7, feed pipe; 8, heating chamber; 9, spiral heating coil; 10, impurity gathering area; 11, liquid gathering area; 12, discharge pipe; 13, T-shaped guide rod; 14, U-shaped slide; 15, spring; 16, strip plate; 17, dredging rod; 18, upper rotating cover; 19, lower rotating cover; 20, support rod; 21, push block; 22, scraper; 23, protective inner cover; 24, annular track; 25, rotating collar; 26. Tooth group; 27. Rotating shaft; 28. Circular gear; 29. ​​Synchronous shaft; 30. Bevel gear 1; 31. Driving motor; 32. Stirring rod; 33. Slow flow guide plate; 34. Cleaning port; 35. Closing plate; 36. Diverter liquid discharge hole; 37. Diverter liquid return hole; 38. Isolation net; 39. Return pipe; 40. Support leg; 41. Support ring; 42. Heat dissipation solution tank; 43. Conical gear ring; 44. Stabilizing cylinder; 45. Stirring shaft; 46. Bevel gear 2; 47. Stirring head; 48. Blade group; 49. Arc surface; 50. Transition plane. DETAILED DESCRIPTION

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein in the specification of the application are for the purpose of describing specific embodiments only and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the description of the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order; the terms "inside", "outside", "left", and "right" indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention.

[0034] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0035] The embodiment of the present invention provides a coal pitch tar processing device, such as Figure 1-13 As shown, the coal tar tar processing device includes: an insulation outer tank 1 and a pretreatment inner tank 2, a material-gathering guide hopper 3, an outward-expanding guide hopper 4 and an annular filter plate 5 arranged in the insulation outer tank 1; the bottom of the pretreatment inner tank 2 is open, and the top is fixedly connected to the top inner wall of the insulation outer tank 1, the material-gathering guide hopper 3 is fixedly installed at the bottom of the pretreatment inner tank 2 for diverting and converging the coal tar, the outer edge of the material-gathering guide hopper 3 is fixedly connected to the inner wall of the insulation outer tank 1, and the outward-expanding guide hopper 4 is provided at the material-gathering guide hopper Below the hopper 3, the outer edge of the outward-expanding guide hopper 4 is fixedly connected to the inner wall of the heat-insulating outer tank 1, and the annular filter plate 5 is fixedly installed in the outward-expanding guide hopper 4. The annular filter plate 5 is provided with multiple rows of filter holes 6 arranged in an annular shape, which are used to filter the tar discharged from the aggregate guide hopper 3; multiple groups of dredging mechanisms are distributed in an annular array on the bottom inner wall of the heat-insulating outer tank 1, and are respectively arranged corresponding to the positions of the multiple rows of filter holes 6, for dredging the filter holes 6 on the annular filter plate 5 from bottom to top.

[0036] In this embodiment, first, the coal pitch tar processing device of the present invention is assembled to ensure that the components such as the insulation outer tank 1, the pretreatment inner tank 2, the aggregate guide hopper 3, the outward expansion guide hopper 4 and the annular filter plate 5 are firmly connected.

[0037] Subsequently, the coal tar to be treated is introduced into the pretreatment inner tank 2. Under the insulation effect of the insulation outer tank 1, the coal tar in the pretreatment inner tank 2 is heated to undergo preliminary physical and chemical changes, such as water evaporation, volatilization of some light components, etc., and solid impurities begin to settle.

[0038] The pre-treated coal tar flows by gravity into the gathering hopper 3, where it is collected. The tar then flows through the gathering hopper 3 into the expansion hopper 4. Inside the expansion hopper 4, the tar is finely filtered through the multiple rows of filter holes 6 on the annular filter plate 5 to remove any remaining solid impurities. The impurities are then washed down into the expansion hopper 4 for collection.

[0039] During the filtration process, if the filter hole 6 is blocked, multiple groups of dredging mechanisms will dredge the filter holes 6 on the annular filter plate 5 from bottom to top to ensure that the filtration efficiency is not affected. The dredging method from bottom to top can effectively reduce the possibility of impurities falling below through the filter hole 6, thereby improving the purity of the tar.

[0040] This solution effectively increases the filtration area and improves the tar filtration efficiency by adopting the design of an annular filter plate 5 and multiple rows of filter holes 6; at the same time, the setting of multiple groups of dredging mechanisms can promptly clear the clogged filter holes 6 and keep the filtration channel unobstructed; the solid impurity content of the coal tar after fine filtration is greatly reduced, which effectively improves the quality of the finished fuel oil and reduces the risk of equipment corrosion and scaling of the inner wall.

[0041] In a further preferred embodiment of the present invention, an annular heating chamber 8 is isolated between the interior of the heat-insulating outer tank 1, the exterior of the pretreatment inner tank 2 and the aggregate hopper 3, and a spiral heating coil 9 is provided in the heating chamber 8 surrounding the pretreatment inner tank 2 for heating the pretreatment inner tank 2 and the internal tar.

[0042] In this embodiment, in order to more efficiently control the temperature of the coal tar in the pretreatment inner tank 2, an annular heating chamber 8 is cleverly isolated between the inside of the heat-insulating outer tank 1, the outside of the pretreatment inner tank 2, and the aggregate hopper 3. A spiral heating coil 9 is provided in this heating chamber 8, which surrounds the pretreatment inner tank 2. When electric current passes through the spiral heating coil 9, it generates heat, which directly acts on the pretreatment inner tank 2, thereby heating the coal tar inside it. In this way, the temperature of the coal tar in the pretreatment stage can be precisely controlled to ensure that the required physical and chemical changes occur, while effectively removing moisture and light components, laying a good foundation for the subsequent filtration process. In this solution, the heating chamber 8 is equipped with a controller and a temperature sensor.

[0043] The spiral heating coil 9 is directly wrapped around the pretreatment inner tank 2, and the heat transfer path is short and concentrated, which significantly improves the heating efficiency. This design allows the coal tar to quickly reach the required temperature and shortens the pretreatment time.

[0044] By adjusting the current and operating time of the spiral heating coil 9, the temperature inside the pretreatment inner tank 2 can be precisely controlled. This helps ensure that the coal tar reacts within the optimal temperature range, thereby improving product quality.

[0045] The heating chamber 8 cleverly utilizes the space between the insulation outer tank 1 and the pretreatment inner tank 2, making the entire heating system compact and space-saving. This not only improves the overall utilization of the equipment, but also facilitates the arrangement of more processing units within a limited space.

[0046] In a further preferred embodiment of the present invention, an impurity gathering area 10 is formed between the lower portion of the gathering hopper 3 , the inclined surface of the outward-expanding hopper 4 , and the inner wall of the heat-insulating outer tank 1 , for gathering impurities filtered by the annular filter plate 5 .

[0047] In this embodiment, in order to more effectively manage and process the impurities generated during the filtration process, the structure between the gathering hopper 3 and the outward-expanding hopper 4 is optimized. The lower portion of the gathering hopper 3 is designed to form a specific area between the inclined surface of the outward-expanding hopper 4 and the inner wall of the insulated outer tank 1, which serves as the impurity gathering area 10. The main function of this area is to gather the solid impurities left after filtration by the annular filter plate 5. When the tar passes through the annular filter plate 5, the impurities therein are intercepted and then fall into the impurity gathering area 10 under the action of flushing, gravity, and sweeping. In this way, we achieve the effective separation of impurities and tar, which facilitates subsequent processing or recycling.

[0048] The design of the impurity gathering area 10 enables the filtered impurities to automatically gather in a designated area, reducing the scattering and residue of impurities in the device and improving the impurity collection efficiency.

[0049] Since the impurities are collected in the impurity accumulation area 10, the cleaning work becomes simpler and more efficient. The operator can regularly open the cleaning port 34 to discharge the accumulated impurities in a unified manner without the need for complex disassembly and cleaning of the entire device.

[0050] In a further preferred embodiment of the present invention, a liquid collecting area 11 is formed between the lower portion of the outwardly expanding guide hopper 4 and the annular filter plate 5 and the bottom inner wall of the heat-insulating outer tank 1 for collecting the filtered tar.

[0051] In this embodiment, to optimize the collection and storage of tar, the lower portion of the outward-expanding hopper 4 and the annular filter plate 5 together form a downwardly extending space. This space, along with the bottom inner wall of the insulated outer tank 1, forms a liquid collection area 11. This design allows the tar, after being finely filtered by the annular filter plate 5, to flow smoothly into and collect in the liquid collection area 11. This area 11 not only provides a stable storage environment for the tar but also facilitates subsequent extraction and transfer operations.

[0052] Because the tar is centrally stored in the liquid collection area 11, extraction and transportation operations become simpler and faster. Operators can easily discharge the tar and transport it to a designated location through devices such as the outlet valve installed at the bottom of the insulated outer tank 1, without having to perform complex operations and adjustments on the entire device.

[0053] In a further preferred embodiment of the present invention, a feed pipe 7 is fixedly installed on the top of the insulation outer tank 1, and a discharge pipe 12 is fixedly installed on the bottom. The feed pipe 7 is connected to the pretreatment inner tank 2, and the discharge pipe 12 is connected to the liquid collection area 11.

[0054] In this embodiment, a feed pipe 7 is fixedly mounted on the top of the insulated outer tank 1. This feed pipe 7 is directly connected to the pretreatment inner tank 2 and is used to smoothly introduce the coal tar to be processed into the pretreatment inner tank 2. At the same time, a discharge pipe 12 is fixedly mounted on the bottom of the insulated outer tank 1. This discharge pipe 12 is connected to the liquid collection area 11 and is used to discharge the tar from the liquid collection area 11 after filtering.

[0055] The design of feed pipe 7 and discharge pipe 12 makes the feeding and discharging process of coal tar more simple and quick. Similarly, the provision of discharge pipe 12 also facilitates the rapid discharge and collection of tar, reducing manual intervention and labor intensity.

[0056] In a further preferred embodiment of the present invention, the dredging mechanism includes a T-shaped guide rod 13, a U-shaped slide 14, a spring 15, a strip plate 16 and a plurality of dredging rods 17, the T-shaped guide rod 13 is arranged in the liquid gathering area 11 and is fixedly connected to the bottom inner wall of the heat-insulating outer tank 1, the U-shaped slide 14 and the spring 15 are both slidably sleeved on the T-shaped guide rod 13, and the two ends of the spring 15 respectively conflict with the top expanded end of the T-shaped guide rod 13 and the U-shaped slide 14, the strip plate 16 is fixedly mounted on the top of the U-shaped slide 14, the strip plate 16 is corresponding to a corresponding row of the filter holes 6, and a plurality of the dredging rods 17 are fixedly mounted on the top of the strip plate 16, and a plurality of the dredging rods 17 are corresponding to a corresponding row of the filter holes 6, the length and diameter of the dredging rods 17 are less than or equal to the aperture length and diameter of the filter holes 6, and are used to dredge the filter holes 6 from bottom to top.

[0057] In this embodiment, to effectively solve the problem of possible clogging of the filter holes 6 on the annular filter plate 5, multiple groups of dredging mechanisms are designed, each group corresponding to a row of filter holes 6. The dredging mechanism mainly includes a T-shaped guide rod 13, a U-shaped slide 14, a spring 15, a strip plate 16, and multiple dredging rods 17.

[0058] Specifically, during use, the U-shaped carriage 14 slides upward along the T-shaped guide rod 13, compressing the spring 15. The ends of the spring 15 respectively contact the top, enlarged end of the T-shaped guide rod 13 and the U-shaped carriage 14, forming an elastic reset mechanism. As the U-shaped carriage 14 slides upward along the T-shaped guide rod 13, the spring 15 is compressed, storing energy for reset. At this point, the strip plate 16 moves upward, allowing the dredging rods 17 to clear the corresponding filter holes 6. The length and diameter of these dredging rods 17 are carefully designed to ensure they can easily pass through the filter holes 6, achieving a bottom-up dredging effect. The cleared impurities fall into the impurity accumulation area 10 and are collected.

[0059] By operating the dredging mechanism, the filter holes 6 on the annular filter plate 5 can be kept unobstructed. This design largely solves the problem of filter hole 6 clogging caused by impurities deposited in the tar, improving the filtration efficiency and stability of the equipment. At the same time, the bottom-up dredging method can also prevent impurities from being poked through the filter holes 6 and falling to the bottom, thereby improving the purity of the filtration.

[0060] Due to the elastic support of the spring 15, when the dredging rod 17 completes the dredging task, it can automatically return to its initial position without manual intervention. This feature not only simplifies the operation process, but also extends the service life of the dredging mechanism.

[0061] The precise alignment of the strip plates 16 and the plurality of dredging rods 17 with the filter holes 6 ensures the accuracy and effectiveness of the dredging operation. Each dredging rod 17 can be accurately inserted into the corresponding filter hole 6 to achieve a full range of dredging effects.

[0062] In a further preferred embodiment of the present invention, a rotating scraping mechanism is provided on the annular filter plate 5, and the scraping mechanism includes an upper rotating cover 18, a lower rotating cover 19, a support rod 20, a push block 21, a scraper 22 and a transmission mechanism. The upper rotating cover 18 is rotatably mounted at the top center of the annular filter plate 5, and the lower rotating cover 19 is rotatably mounted at the bottom center of the annular filter plate 5. The upper rotating cover 18 and the lower rotating cover 19 rotate synchronously. The upper rotating cover 18 and the lower rotating cover 19 are located within the convergence range of multiple rows of filter holes 6 and multiple groups of dredging mechanisms. The support rod 20 is fixedly mounted on one side of the lower rotating cover 19, and the rotation trajectory of the support rod 20 is located below the multiple strip plates 16. The pushing block 21 is fixedly mounted on the end of the support rod 20, and is used to push the multiple strip plates 16 upward in sequence when the lower rotating cover 19 drives the support rod 20 to rotate, so that the dredging rod 17 dredges through the filter hole 6. The scraper 22 is fixedly mounted on one side of the upper rotating cover 18, and the scraper 22 is located above the pushing block 21. The bottom of the scraper 22 contacts the upper surface of the annular filter plate 5 for scraping off impurities.

[0063] In another embodiment of the present invention, both sides of the pushing block 21 are arc-shaped surfaces 49, which are used for guiding when contacting the strip plate 16. The top of the pushing block 21 is a transition plane 50, which conflicts with the bottom of the corresponding strip plate 16 and is used to cooperate with the scraping trajectory of the scraper 22.

[0064] In this embodiment, in order to further optimize the impurity cleaning efficiency during the tar filtration process, a rotating scraping mechanism is used to automatically scrape off impurities on the annular filter plate 5 and clear the filter holes 6.

[0065] Specifically, the upper rotary cover 18 and the lower rotary cover 19 are respectively installed at the top and bottom centers of the annular filter plate 5 and are designed to rotate synchronously. Such a layout ensures that the scraping mechanism can fully cover the working range of multiple rows of filter holes 6 and multiple groups of dredging mechanisms. The support rod 20 is fixedly installed on one side of the lower rotary cover 19 and moves with the rotation of the lower rotary cover 19. Its rotation trajectory is cleverly set below the multiple strip plates 16. The push block 21 is installed at the end of the support rod 20. When the support rod 20 rotates to a specific position with the lower rotary cover 19, the push block 21 will use the arc surface 49 as a guide to push each strip plate 16 upward in turn, so that the strip plate 16 slides along the transition plane 50, thereby driving the dredging rod 17 to insert into the corresponding filter hole 6 to achieve the dredging operation.

[0066] At the same time, the scraper 22 fixedly mounted on one side of the upper rotating cover 18 rotates synchronously with the upper rotating cover 18, and its bottom always maintains contact with the upper surface of the annular filter plate 5. When the scraper 22 is scraping, the pushing block 21 rotates before the scraper 22 to push the strip plate 16 into place, and the dredging rod 17 is fully inserted into the filter hole 6, so that the filter hole 6 is completely blocked. The top of the dredging rod 17 is flush with the upper surface of the annular filter plate 5. When the strip plate 16 completely falls onto the transition plane 50, the scraper 22 just reaches the side of the filter hole 6. When the strip plate 16 is about to move from the transition plane 50 to the curved surface 49, the scraper 22 has completely passed through the filter hole 6, and the impurities scraped by the scraper 22 are scraped. The design of the scraper 22 not only effectively scrapes impurities from the filter plate surface, but also further promotes the dredging effect of the dredging rod 17 on the filter hole 6, ensuring that the filter hole 6 is unobstructed. The scraped impurities fall into the impurity accumulation area 10 and are collected.

[0067] The introduction of the rotary scraping mechanism realizes the automatic and efficient cleaning of impurities on the annular filter plate 5. The scraping and dredging operations can be achieved through mechanical transmission without manual intervention, which greatly improves work efficiency.

[0068] The synchronous rotation design of the upper rotating cover 18 and the lower rotating cover 19 ensures that the scraping mechanism can fully cover the working range of multiple rows of filter holes 6 and multiple groups of dredging mechanisms, achieving cleaning without dead angles.

[0069] The synergistic effect of the scraper 22 and the dredging rod 17 can not only effectively scrape away impurities on the surface of the filter plate, but also further promote the dredging effect of the filter holes 6. This dual action mechanism significantly improves the filtration purity of the tar and the stability of the equipment.

[0070] The entire rotary scraper mechanism is compact and rationally designed, with tight and reliable connections between components. Furthermore, the modular design makes equipment maintenance much simpler and faster.

[0071] In summary, the rotary scraper mechanism in a further preferred embodiment of the present invention realizes the automatic and efficient cleaning of impurities on the annular filter plate 5 and the dredging of the filter holes 6 through an ingenious structural design and a synergistic mechanism.

[0072] In a further preferred embodiment of the present invention, the transmission mechanism includes two protective inner covers 23 respectively arranged in the upper rotating cover 18 and the lower rotating cover 19, and the two protective inner covers 23 are fixedly connected to the top center and the bottom center of the annular filter plate 5 respectively. An annular track 24 is fixedly sleeved on each of the two protective inner covers 23, and a rotating collar 25 is rotatably sleeved on each of the two annular tracks 24. The two rotating collars 25 are respectively fixedly connected to the inner walls of the upper rotating cover 18 and the lower rotating cover 19, and are used to stabilize the upper rotating cover 18 and the lower rotating cover 19 along the corresponding The protective inner cover 23 rotates, and the two rotating rings 25 are fixedly mounted with a tooth group 26. The two protective inner covers 23 can be rotatably mounted with a rotating shaft 27. The two rotating shafts 27 are fixedly mounted with a circular gear 28. The two circular gears 28 are respectively engaged with the two tooth groups 26 to drive the corresponding rotating ring 25 to rotate. A synchronous shaft 29 is rotatably mounted at the center of the annular filter plate 5. Conical gears 30 are fixedly mounted on both ends of the synchronous shaft 29 and the two circular gears 28. The four conical gears 30 are respectively engaged with each other.

[0073] In this embodiment, two protective inner covers 23 are respectively positioned within the upper and lower rotating covers 18, 19, and are fixedly connected to the top and bottom centers of the annular filter plate 5, providing protection for the rotating components. An annular track 24 is fixedly mounted on the protective inner covers 23, providing a stable rotation path for a rotating collar 25. The rotating collar 25 is rotatably mounted on the annular track 24 and fixedly connected to the inner walls of the upper and lower rotating covers 18, 19. Power is transmitted through the meshing of a tooth set 26 with a circular gear 28.

[0074] Rotating shaft 27 is rotatably mounted on protective inner cover 23, while circular gear 28 is fixedly mounted on rotating shaft 27 and cooperates with gear set 26. Synchronizing shaft 29 is mounted at the center of annular filter plate 5, and is fixedly mounted with bevel gears 1 30. These bevel gears 1 30 mesh in pairs, achieving synchronized power distribution and transmission, ensuring that upper rotating cover 18 and lower rotating cover 19 can rotate synchronously.

[0075] The two-to-two meshing design of the bevel gears 30 realizes the synchronous distribution and transmission of power, ensures that the upper rotating cover 18 and the lower rotating cover 19 can rotate synchronously and stably, and improves the operating stability of the entire rotary scraper mechanism.

[0076] The meshing design of the tooth set 26 and the circular gear 28, and the stable rotation of the rotating ring 25 on the annular track 24, achieve efficient power transmission, reduce energy loss, and improve the working efficiency of the scraping mechanism.

[0077] To sum up, the transmission mechanism in a further preferred embodiment of the present invention realizes the synchronous and stable rotation of the upper rotating cover 18 and the lower rotating cover 19 through a sophisticated structural design and an efficient power transmission mechanism, provides a strong guarantee for the efficient operation of the rotating scraping mechanism, and further improves the overall performance and durability of the tar filtering equipment.

[0078] In a further preferred embodiment of the present invention, a drive motor 31 is fixedly installed on the top of the heat-insulating outer tank 1, the output shaft of the drive motor 31 is movably extended into the pretreatment inner tank 2 and is fixedly installed with a stirring rod 32, and the bottom end of the stirring rod 32 is fixedly connected to the top of the upper rotating cover 18.

[0079] In this embodiment, a drive motor 31 is fixedly installed on the top of the insulated outer tank 1. The drive motor 31 serves as the core power source of the entire equipment. It not only provides power for the stirring process, but also is connected to the stirring rod 32 and the upper rotating cover 18 of the rotating scraping mechanism through its output shaft, thereby realizing the integrated operation of stirring and scraping.

[0080] The output shaft of the drive motor 31 extends flexibly into the interior of the pretreatment inner tank 2, where a stirring rod 32 is fixedly mounted. The bottom end of the stirring rod 32 is tightly and securely connected to the top of the upper rotating cover 18. This design ensures that when the drive motor 31 is activated, its power is directly transmitted to the stirring rod 32, driving it to rotate and stir. Simultaneously, due to the fixed connection between the stirring rod 32 and the upper rotating cover 18, the stirring operation also drives the rotating scraping mechanism, achieving the dual effects of stirring and scraping.

[0081] In a further preferred embodiment of the present invention, a slow-flow guide plate 33 is fixedly installed on the top inner wall of the pretreatment inner tank 2 , and the slow-flow guide plate 33 is located below the feed pipe 7 and is used to guide the tar to the inner wall of the pretreatment inner tank 2 .

[0082] In this embodiment, to optimize the flow of tar after entering the pretreatment inner tank 2 and reduce the possibility of eddy currents and direct impact on the inner wall, a slow-flow guide plate 33 is added to the top inner wall of the pretreatment inner tank 2. The slow-flow guide plate 33 is cleverly installed below the feed pipe 7, and its position is carefully designed to guide the tar inflow direction.

[0083] When tar enters the pretreatment inner tank 2 through the feed pipe 7, the slow-flow guide plate 33 guides the tar toward the inner wall of the pretreatment inner tank 2, where it flows slowly downward along the wall. This design effectively disperses the impact force of the tar, preventing localized scouring and eddy currents caused by direct impact of the tar on the inner wall, thereby helping to maintain a uniform and stable flow field within the pretreatment inner tank 2.

[0084] The introduction of the slow-flow guide plate 33 significantly improves the flow state of the tar in the pretreatment inner tank 2, reducing the occurrence of eddy currents and turbulence. This not only facilitates the sedimentation and separation of impurities in the tar, but also improves the efficiency of subsequent filtration and purification processes.

[0085] In order to further improve the use effect of this device, in addition to the above scheme, this scheme also has the following embodiments:

[0086] In another embodiment of the present invention, the thermal insulation outer tank 1 is provided with a plurality of cleaning ports 34 connected to the liquid collection area 11 along a circular array for cleaning impurities, and a plurality of closing plates 35 are detachably installed on the outer side of the thermal insulation outer tank 1 for closing the plurality of cleaning ports 34.

[0087] In this embodiment, a plurality of cleaning ports 34 are provided in a circular array on the sidewall of the heat-insulating outer tank 1, communicating with the liquid collecting area 11. These cleaning ports 34 are designed to facilitate the removal of impurities accumulated in the liquid collecting area 11 after the device has been operating for a period of time, thereby preventing excessive accumulation of impurities from affecting the normal operation of the device.

[0088] At the same time, in order to maintain the sealing and integrity of the thermal insulation outer tank 1 when not being cleaned, a plurality of sealing plates 35 are detachably installed on the outside of the cleaning port 34. These sealing plates 35 are designed to be easy to install and remove, and can be quickly opened when cleaning is required and quickly closed after cleaning is completed, thereby ensuring that the sealing performance of the thermal insulation outer tank 1 is not affected.

[0089] In another embodiment of the present invention, multiple closed plates 35 are provided with diverter liquid discharge holes 36, and the thermal insulation outer tank 1 is provided with multiple diverter liquid return holes 37 along a circular array. Isolation nets 38 are fixedly installed in the multiple diverter liquid discharge holes 36, and the aperture of the isolation net 38 is smaller than the aperture of the filter hole 6. Reflux pipes 39 are fixedly installed on the multiple closed plates 35 and the thermal insulation outer tank 1. The multiple reflux pipes 39 are used to connect the corresponding diverter liquid discharge holes 36 and the diverter liquid return holes 37, and the reflux pipes 39 are hoses.

[0090] In this embodiment, diverted liquid discharge holes 36 are provided on the plurality of sealing plates 35, and a plurality of diverted liquid return holes 37 are correspondingly provided along a circular array on the heat-insulating outer tank 1. The design of these holes allows for the simultaneous processing and recovery of a portion of the diverted liquid while cleaning impurities from the liquid collecting area 11.

[0091] To ensure that the diverted liquid does not carry oversized impurity particles during the reflux process, an isolation screen 38 is fixedly installed in each diverted liquid discharge hole 36. The pore size of these isolation screens 38 is carefully designed to be smaller than the pore size of the filter hole 6, thereby effectively preventing impurity particles larger than a certain size from entering the reflux system.

[0092] Furthermore, multiple return pipes 39 are fixedly mounted between the sealing plate 35 and the insulated outer tank 1. These return pipes 39 utilize a flexible hose design, ensuring flexible connection while facilitating removal and maintenance when necessary. Each return pipe 39 precisely connects to a diverted fluid outlet hole 36 and a diverted fluid return hole 37, ensuring that the diverted fluid can flow smoothly back along the predetermined path.

[0093] In another embodiment of the present invention, the bottom of the thermal insulation outer tank 1 is funnel-shaped, and a plurality of support legs 40 are fixedly installed on the bottom of the thermal insulation outer tank 1, and a support ring 41 is fixedly installed between the plurality of support legs 40. A heat dissipation solution tank 42 is fixedly installed on the support ring 41 and is fixedly sleeved outside the discharge pipe 12, for storing solution to dissipate heat to the discharge pipe 12, and the top of the heat dissipation solution tank 42 is open.

[0094] In this embodiment, the bottom of the insulated outer tank 1 is designed to be funnel-shaped. This shape is conducive to the natural gathering of tar or processed materials under the action of gravity and flowing to the discharge pipe 12, thereby improving the smoothness and efficiency of discharge.

[0095] Furthermore, to enhance the stability of the insulated outer tank 1, multiple support legs 40 are fixedly mounted on its bottom. These legs 40 not only support the entire device but also, through the support ring 41 between them, further reinforce the bottom structure of the device. A heat dissipation solution tank 42, fixedly mounted on the support ring 41 and mounted outside the discharge pipe 12, is fixedly mounted on the support ring 41. This heat dissipation solution tank 42 is used to store a specific solution. Through heat exchange with the solution, it dissipates heat from the discharge pipe 12, thereby controlling the temperature of the material during discharge and preventing changes in material properties or equipment damage caused by excessive temperatures.

[0096] In another embodiment of the present invention, a conical gear ring 43 is fixedly installed on the bottom of the lower rotating cover 19, and a plurality of stabilizing cylinders 44 are fixedly installed on the inner wall of the bottom of the thermal insulation outer tank 1. A stirring shaft 45 is rotatably installed on the plurality of stabilizing cylinders 44, and a bevel gear 2 46 meshing with the conical gear ring 43 is fixedly installed on the top of the plurality of stirring shafts 45. The bottom ends of the plurality of stirring shafts 45 extend into the heat dissipation solution tank 42 and are fixedly installed with a stirring head 47. A fan blade group 48 is fixedly sleeved on the plurality of stirring shafts 45. The fan blade group 48 is located outside the thermal insulation outer tank 1 and is used to blow air into the heat dissipation solution tank 42 to cool the solution.

[0097] In this embodiment, to further enhance the cooling and stirring efficiency of the device, a conical gear ring 43 is fixedly mounted on the bottom of the lower rotating cover 19. This design enables the lower rotating cover 19 to drive a meshing bevel gear 2 46 as it rotates. Furthermore, multiple stabilizing cylinders 44 are fixedly mounted on the bottom inner wall of the insulated outer tank 1. Each stabilizing cylinder 44 rotatably houses a stirring shaft 45. These stirring shafts 45 are topped with bevel gears 2 46, which mesh with the bevel gear ring 43, thereby enabling power transmission between the lower rotating cover 19 and the stirring shafts 45.

[0098] When the device is in operation, the rotation of the lower rotating cover 19 drives the bevel gear ring 43 to rotate, which in turn drives the second bevel gear 46 and the stirring shaft 45 to rotate. The bottom end of the stirring shaft 45 extends into the heat dissipation solution tank 42 and is fixedly mounted with a stirring head 47, which is used to dissipate the heat dissipation solution in the heat dissipation solution tank 42, thereby enhancing the fluidity and heat exchange efficiency of the solution. In addition, a fan blade group 48 is fixedly mounted on the stirring shaft 45. These fan blade groups 48 are located outside the heat-insulating outer tank 1 and rotate as the stirring shaft 45 rotates, generating wind to blow air into the heat dissipation solution tank 42, further accelerating the cooling process of the solution.

[0099] In summary, compared with the relevant technologies, this device effectively increases the filtration area and improves the tar filtration efficiency by adopting the design of an annular filter plate 5 and multiple rows of filter holes 6; at the same time, the setting of multiple groups of dredging mechanisms can promptly clear the clogged filter holes 6 and keep the filtration channel unobstructed; the solid impurity content of the coal tar after fine filtration is greatly reduced, which effectively improves the quality of the finished fuel oil and reduces the risk of equipment corrosion and scaling of the inner wall.

[0100] In the several embodiments provided in this application, it should be understood that the disclosed device can be implemented in other ways.

[0101] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the invention. Obviously, the embodiments described are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also fall within the scope of protection of the present invention.

Claims

1. A coal tar tar processing device, characterized in that: include: An insulating outer tank and a pretreatment inner tank, a material collecting guide hopper, an outward expansion guide hopper and an annular filter plate arranged in the insulating outer tank; The bottom of the pretreatment inner tank is open, and the top is fixedly connected to the top inner wall of the insulation outer tank. The aggregate guide hopper is fixedly installed at the bottom of the pretreatment inner tank and is used to guide and gather the tar. The outer edge of the aggregate guide hopper is fixedly connected to the inner wall of the insulation outer tank. The outward expansion guide hopper is arranged below the aggregate guide hopper. The outer edge of the outward expansion guide hopper is fixedly connected to the inner wall of the insulation outer tank. The annular filter plate is fixedly installed in the outward expansion guide hopper. The annular filter plate is provided with multiple rows of filter holes arranged in an annular shape and is used to filter the tar discharged from the aggregate guide hopper. A plurality of dredging mechanisms are distributed in an annular array on the bottom inner wall of the heat-insulating outer tank and are respectively arranged corresponding to the positions of the plurality of rows of filter holes for dredging the filter holes on the annular filter plate from bottom to top.

2. The coal pitch tar processing device according to claim 1, characterized in that: An annular heating chamber is isolated between the interior of the insulation outer tank, the exterior of the pretreatment inner tank and the aggregate guide hopper. The heating chamber is provided with a spiral heating coil surrounding the pretreatment inner tank for heating the pretreatment inner tank and the tar inside.

3. The coal pitch tar processing device according to claim 1, characterized in that: An impurity gathering area is formed below the material gathering hopper, the inclined surface of the outwardly expanding material gathering hopper and the inner wall of the heat-insulating outer tank, and is used to gather impurities filtered by the annular filter plate.

4. The coal pitch tar processing device according to claim 1, characterized in that: A liquid gathering area is formed between the lower part of the outwardly expanded material guide hopper and the annular filter plate and the bottom inner wall of the heat-insulating outer tank, and is used to gather the filtered tar.

5. The coal pitch tar processing device according to claim 4, characterized in that: A feed pipe is fixedly installed on the top of the heat-insulating outer tank, and a discharge pipe is fixedly installed on the bottom. The feed pipe is connected to the pretreatment inner tank, and the discharge pipe is connected to the liquid gathering area.

6. The coal pitch tar processing device according to claim 4, characterized in that: The dredging mechanism includes a T-shaped guide rod, a U-shaped slide, a spring, a strip plate and a plurality of dredging rods. The T-shaped guide rod is arranged in the liquid gathering area and fixedly connected to the bottom inner wall of the heat-insulating outer tank. The U-shaped slide and the spring are both slidably mounted on the T-shaped guide rod. The two ends of the spring are respectively in conflict with the top enlarged end of the T-shaped guide rod and the U-shaped slide. The strip plate is fixedly mounted on the top of the U-shaped slide. The strip plate is arranged corresponding to a corresponding row of filter holes. A plurality of dredging rods are fixedly mounted on the top of the strip plate. A plurality of dredging rods are arranged corresponding to a corresponding row of filter holes. The length and diameter of the dredging rod are less than or equal to the aperture length and diameter of the filter holes, and are used to dredge the filter holes from bottom to top.

7. The coal pitch tar processing device according to claim 6, characterized in that: The annular filter plate is provided with a rotating scraper mechanism, and the scraper mechanism comprises an upper rotating cover, a lower rotating cover, a support rod, a pushing block, a scraper and a transmission mechanism, the upper rotating cover is rotatably mounted at the top center of the annular filter plate, and the lower rotating cover is rotatably mounted at the bottom center of the annular filter plate, the upper rotating cover and the lower rotating cover rotate synchronously, and the upper rotating cover and the lower rotating cover are located within the convergence range of multiple rows of filter holes and multiple groups of dredging mechanisms, the support rod is fixedly mounted on one side of the lower rotating cover, the rotation trajectory of the support rod is located below the multiple strip plates, the pushing block is fixedly mounted on the end of the support rod, and is used to push the multiple strip plates upward in sequence when the lower rotating cover drives the support rod to rotate, so that the dredging rod dredges through the filter holes, and the scraper is fixedly mounted on one side of the upper rotating cover, the scraper is located above the pushing block, and the bottom of the scraper contacts with the upper surface of the annular filter plate for scraping impurities.

8. The coal pitch tar processing device according to claim 7, characterized in that: The transmission mechanism comprises two protective inner covers respectively arranged in the upper rotating cover and the lower rotating cover, the two protective inner covers are respectively fixedly connected with the top center and the bottom center of the annular filter plate, the two protective inner covers are fixedly sleeved with annular tracks, the two annular tracks are rotatably sleeved with rotating rings, the two rotating rings are respectively fixedly connected with the inner walls of the upper rotating cover and the lower rotating cover for stabilizing the upper rotating cover and the lower rotating cover to rotate along the corresponding protective inner covers, the two rotating rings are fixedly installed with tooth groups, the two protective inner covers are rotatably installed with rotating shafts, the two rotating shafts are fixedly installed with circular gears, the two circular gears are respectively meshed with the two tooth groups for driving the corresponding rotating rings to rotate, a synchronous shaft is rotatably installed at the center of the annular filter plate, and bevel gears 1 are fixedly installed on both ends of the synchronous shaft and the two circular gears, and the four bevel gears 1 are respectively meshed with each other.

9. The coal pitch tar processing device according to claim 7, characterized in that: A driving motor is fixedly installed on the top of the heat-insulating outer tank, and the output shaft of the driving motor movably extends into the pretreatment inner tank and is fixedly installed with a stirring rod, and the bottom end of the stirring rod is fixedly connected to the top of the upper rotating cover.

10. The coal pitch tar processing device according to claim 1, characterized in that: A slow-flow guide plate is fixedly mounted on the top inner wall of the pretreatment inner tank. The slow-flow guide plate is located below the feed pipe and is used to guide the tar to the inner wall of the pretreatment inner tank.

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