Slag filtration device

Abstract

The present invention discloses a slag filtering device, which relates to the technical field of industrial slag cleaning and filtering equipment. The device comprises a plurality of filtering mechanisms and a support mechanism for supporting the plurality of filtering mechanisms. The filtering mechanisms comprise: a support portion; a filtering portion disposed below the support portion; and a support unit having a plurality of mounting openings, wherein the plurality of filtering mechanisms are disposed in the plurality of mounting openings. The filtering portions can pass through the mounting openings, and the support portion can abut against the upper surface of the support unit to support the filtering mechanisms. The slag filtering device of the present invention enables rapid and partial replacement of the filtering mechanisms when cleaning or replacing the slag filter layer, without having to stop filtering for a long time.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial slag filtering equipment, in particular to a slag filtering device. Background Art

[0002] Currently, the bottom filtration method for slag-water separation is the mainstream process for blast furnace slag treatment. It separates slag and water through high-efficiency filter layers composed of different particle sizes, ensuring that the impurity content in the water is less than or equal to 12%. However, in actual production, because the slag water contains a large amount of slag wool, the fine slag wool is easily trapped in the voids of the upper small-particle filter layer, affecting the filtration capacity of the filter layer. At the same time, the calcium and magnesium ions in the slag flushing water are continuously enriched during recycling, and their solubility approaches saturation. In addition, the water temperature rises from room temperature to 65°C to 85°C after slag flushing. In the high temperature and high hardness environment of the slag flushing water, calcium and magnesium ions are more likely to crystallize. The crystals gradually accumulate and form a hard, compacted layer on the upper filter layer with smaller porosity. The compacted layer continues to develop towards the lower filter layer, and the degree of compaction in each filter layer area is uneven, further exacerbating the decline in the filtration capacity of the filter layer. To address this issue, the current main method is to regularly backwash upward from the bottom of the filter layer to remove fine slag from the filter layer. However, this method cannot avoid the problem of calcium and magnesium ion crystallization and hardening, but can only slow down the development of hardening. After the hardening develops to a certain extent, the filter layer needs to be partially or completely replaced in order to maintain the balance of the circulating water system. However, replacing the filter layer will inevitably cause production stagnation and reduce production efficiency. The method of regularly adding softening agents can play a certain role in cleaning the hardened layer, but softening agents are generally expensive. The cost of using softening agents in large quantities is high, and it cannot solve the problem of affecting blast furnace production efficiency. Summary of the Invention

[0003] The object of the present invention is to provide a slag filtering device which can realize rapid and partial replacement of the filtering mechanism when cleaning or replacing the slag filtering layer without stopping the filtering work for a long time.

[0004] The above-mentioned purpose of the present invention can be achieved by adopting the following technical solutions:

[0005] The present invention provides a slag filtering device, comprising a plurality of filtering mechanisms and a supporting mechanism for supporting the plurality of filtering mechanisms;

[0006] The filtering mechanism comprises:

[0007] Support part;

[0008] a filter portion disposed on a lower side of the support portion;

[0009] The supporting mechanism comprises:

[0010] A support unit, wherein the support unit has a plurality of mounting openings, and the plurality of filtering mechanisms are respectively disposed in the plurality of mounting openings;

[0011] The filter portion can pass through the installation opening, and the support portion can abut against the upper surface of the support unit to support the filter mechanism.

[0012] In a preferred embodiment, the filtering mechanism includes:

[0013] Four water-blocking side plates, the four water-blocking side plates are arranged in a rectangular shape, and adjacent water-blocking side plates are sealed and welded;

[0014] A mounting plate with a rectangular outer contour, wherein the outer edge of the mounting plate is sealed and welded to the lower edges of the four water-blocking side plates, and a rectangular fixing opening is formed in the middle of the mounting plate;

[0015] Four filter side plates, the four filter side plates are arranged in a rectangular shape, adjacent filter side plates are sealed and welded, and the upper edges of the four filter side plates are sealed and welded to the inner edges of the fixing openings of the mounting plate;

[0016] A rectangular filter bottom plate, the filter bottom plate being seal-welded to the lower edges of the four filter side plates;

[0017] Among them, the four water-blocking side plates and the mounting plate are welded to form the supporting part, the four filtering side plates and the filtering bottom plate are welded to form the filtering part, and the four water-blocking side plates, the mounting plate, the four filtering side plates, and the filtering bottom plate are together surrounded to form a accommodating space.

[0018] In a preferred embodiment, the support mechanism includes:

[0019] Multiple horizontal support steel sections arranged in parallel;

[0020] A plurality of longitudinal support profiles, wherein the plurality of longitudinal support profiles are arranged in parallel between two adjacent transverse support profiles, and both ends of the longitudinal support profiles are respectively welded to two adjacent transverse support profiles. Between two adjacent transverse support profiles, one mounting opening is formed between each two adjacent longitudinal support profiles. The plurality of transverse support profiles and the plurality of longitudinal support profiles are welded together to form the support unit.

[0021] The width of the transverse supporting steel is the same as the width of the longitudinal supporting steel, and the width between the outer edge of the mounting plate and the inner edge thereof at the fixing opening is less than half the width of the transverse supporting steel.

[0022] In a preferred embodiment, the filtering mechanism includes a filtering unit composed of a plurality of pebbles of different particle sizes, and the filtering unit is arranged in the accommodating space;

[0023] The filter unit includes a first filter layer, a second filter layer, a third filter layer, and a fourth filter layer stacked in sequence from top to bottom;

[0024] Among them, the particle size of the multiple pebbles constituting the first filter layer is between 2mm and 4mm, the particle size of the multiple pebbles constituting the second filter layer is between 4mm and 8mm, the particle size of the multiple pebbles constituting the third filter layer is between 8mm and 16mm, and the particle size of the multiple pebbles constituting the fourth filter layer is between 16mm and 24mm.

[0025] In a preferred embodiment, a plurality of filter holes are formed on the filter bottom plate and the four filter side plates, the ratio of the area of ​​the plurality of filter holes to the area of ​​the filter bottom plate and the plurality of filter side plates is greater than a preset porosity, the fourth filter layer has a preset porosity, and the preset porosity is greater than the preset porosity.

[0026] In a preferred embodiment, the filtering mechanism includes:

[0027] Four reinforcing ribs are arranged in the accommodating space, and the reinforcing ribs extend radially outward from the middle of the accommodating space to the filter side plate and the water-blocking side plate. The four reinforcing ribs are welded to each other in the middle of the accommodating space, and a connecting port is formed on the reinforcing ribs. The height of the lower edge of the connecting port is higher than the height of the mounting plate.

[0028] In a preferred embodiment, the filtering mechanism further comprises:

[0029] Four hanging parts, both ends of which are respectively connected to two adjacent water-blocking side plates, and the four hanging parts are distributed at four corners of a rectangle formed by the four water-blocking side plates.

[0030] In a preferred embodiment, the slag filtering device comprises:

[0031] A rock wool filler is filled between adjacent filter mechanisms, and the rock wool filler is wedge-shaped. Both sides of the rock wool filler are respectively against the outer wall surfaces of the two adjacent filter mechanisms, and the lower end of the rock wool filler extends toward the installation port to fill between the support portion and the support unit.

[0032] In a preferred embodiment, the slag filtering device further comprises a sealing member provided on two adjacent filtering mechanisms;

[0033] The sealing member comprises:

[0034] transverse sealing portion;

[0035] two longitudinal sealing portions extending downwardly from opposite sides of the transverse sealing portion;

[0036] The two longitudinal sealing portions respectively abut against the inner walls of the water-blocking side plates of the two adjacent filter mechanisms, and the transverse sealing portion simultaneously abuts against the upper edges of the water-blocking side plates of the two adjacent filter mechanisms, so that the gap between the two adjacent filter mechanisms can be sealed by the sealing member.

[0037] In a preferred embodiment, the support mechanism further comprises:

[0038] A plurality of support columns are fixedly arranged at the intersection of at least part of the transverse support steel and the longitudinal support steel to support the support unit.

[0039] The characteristics and advantages of the present invention are:

[0040] In order to solve the problem that the continuous process flow must be stopped for a long time to replace the filtering parts after the filtering equipment has been used for a long time, the slag filtering device of this embodiment is provided with multiple modular filtering mechanisms, and correspondingly, multiple mounting ports for installing the filtering mechanisms are provided on the supporting mechanism, thereby greatly improving the replacement speed of the filtering mechanism, and multiple filtering mechanisms can be used alternately, so that there is no need to stop the process flow for a long time when replacing the filtering mechanism, effectively solving the problem of affecting production efficiency when replacing the filtering equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0042] Figure 1 Shown is a schematic structural diagram of the filtering mechanism of the slag filtering device of the present invention.

[0043] Figure 2 Shown is a schematic structural diagram of the support mechanism of the slag filtering device of the present invention.

[0044] Figure 3 It is a top view schematic diagram of the installation of the filtering mechanism and the supporting mechanism of the slag filtering device of the present invention.

[0045] Figure 4Shown is a schematic cross-sectional view of the installation of the filtering mechanism and the supporting mechanism of the slag filtering device of the present invention. DETAILED DESCRIPTION

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without inventive effort are within the scope of protection of the present invention. It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or there can be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there can be an intermediate element. The terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to mechanical or electrical connections, internal communication between two elements, direct connection, or indirect connection through an intermediary. Those of ordinary skill in the art will understand the specific meanings of these terms based on the specific circumstances. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0047] See also Figure 1 and Figure 2 As shown, the present invention provides a slag filtering device, comprising a plurality of filtering mechanisms 1 and a supporting mechanism 2 for supporting the plurality of filtering mechanisms 1; the filtering mechanism 1 comprises: a supporting portion 11; a filtering portion 12 arranged on the lower side of the supporting portion 11; the supporting mechanism 2 comprises: a supporting unit 21, the supporting unit 21 having a plurality of mounting openings 22, and the plurality of filtering mechanisms 1 are respectively arranged in the plurality of mounting openings 22; wherein the filtering portion 12 can pass through the mounting openings 22, and the supporting portion 11 can abut against the upper surface of the supporting unit 21 to support the filtering mechanism 1.

[0048] The high-temperature molten slag from ironmaking can be recycled after being impacted by high-pressure water, cooled into particles, and separated from the slag and water. The water used to cool the slag contains a large amount of slag and impurities. In order to recycle the slag cooling water for reuse, the slag cooling water needs to be filtered through a filtering device. The slag filtering device of the embodiment of the present invention is used to filter slag cooling water. In order to solve the problem that the continuous process flow must be stopped for a long time after the filtering equipment has been used for a long time to replace the filtering parts, the slag filtering device of this embodiment is provided with a plurality of modular filtering mechanisms 1, and a plurality of mounting ports 22 for installing the filtering mechanisms 1 are correspondingly provided on the supporting mechanism 2, thereby greatly improving the replacement speed of the filtering mechanism 1, and the plurality of filtering mechanisms 1 can be reused, thereby eliminating the need to stop the process flow for a long time when replacing the filtering mechanism 1, effectively solving the problem of affecting production efficiency when replacing the filtering equipment. Please refer to Figure 3 As shown, in actual production, two sets of filtering facilities are arranged, including a filtering mechanism 1 and a supporting mechanism 2. One set of filtering facilities is used for slag-water separation, and the other set of filtering facilities is used to clean and transport the slag after slag-water separation. When the permeability of the filtering mechanism decreases due to compaction, the two sets of filtering facilities can be used to partially replace the filtering mechanism 1 during the short period of time when they are not used. Under the premise of not affecting production, the filtering mechanism 1 can be gradually replaced in full to maintain good permeability. In addition, these filtering mechanisms 1 can be easily and quickly removed from the supporting mechanism 2 to facilitate cleaning or replacement by the operator. When cleaning or replacing, the filter unit in the filtering mechanism 1 can be removed for cleaning, or a new filter unit can be directly replaced.

[0049] Specifically, the multiple filter mechanisms 1 have the same structure to achieve modular, quick replacement and facilitate placement of the filter mechanisms 1 into different mounting openings 22 of the support mechanism 2. Accordingly, the multiple mounting openings 22 of the support mechanism 2 are of the same size to facilitate installation of the filter mechanisms 1. The filter units are removably installed into the filter mechanisms 1 for easy cleaning or replacement.

[0050] In order to make the filter mechanism 1 have a more concise structure, to save the construction cost of multiple filter mechanisms 1, and to achieve modular rapid replacement and expansion effects, please refer to Figure 1As shown, in a preferred embodiment, the filter mechanism 1 includes: four water-blocking side plates 111, which are arranged in a rectangular shape around the four water-blocking side plates 111, and the adjacent water-blocking side plates 111 are sealed and welded; a mounting plate 112 with a rectangular outer contour, the outer edge of the mounting plate 112 is sealed and welded to the lower edge of the four water-blocking side plates 111, and a rectangular fixed opening is formed in the middle of the mounting plate 112; four filter side plates 121, which are arranged in a rectangular shape around the four filter side plates 121, and the adjacent filter side plates 121 are sealed and welded, and the four The upper edge of the filter side plate 121 is sealed and welded to the inner edge of the fixed port of the mounting plate 112; the filter bottom plate 122 is arranged in a rectangular shape, and the filter bottom plate 122 is sealed and welded to the lower edges of the four filter side plates 121; wherein, the four water-blocking side plates 111 and the mounting plate 112 are welded to form a support portion 11, and the four filter side plates 121 and the filter bottom plate 122 are welded to form a filter portion 12, and the four water-blocking side plates 111, the mounting plate 112, the four filter side plates 121, and the filter bottom plate 122 together surround and form a receiving space 13.

[0051] By welding metal sheets together, the support portion 11 and filter portion 12 of the filter mechanism 1 can be quickly constructed and manufactured quickly. By prefabricating a plurality of matching water-blocking side panels 111, a plurality of mounting plates 112, a plurality of filter side panels 121, and a plurality of filter bottom panels 122, the filter mechanism 1 can be quickly assembled and constructed. In subsequent use, more filter mechanisms 1 can be quickly expanded according to production needs, achieving a modular effect. Specifically, the plurality of water-blocking side panels 111, a plurality of mounting plates 112, a plurality of filter side panels 121, and a plurality of filter bottom panels 122 can all be made of steel plate to provide sufficient structural strength. The plurality of filter side panels 121 and the plurality of filter bottom panels 122 should also be provided with openings to allow the filtered wash water to flow out. The plurality of water-blocking side panels 111, a plurality of mounting plates 112, a plurality of filter side panels 121, and a plurality of filter bottom panels 122 can also be coated with a waterproof and rust-proof layer, such as rust-proof paint, to prevent them from rusting due to long-term contact with the wash water.

[0052] In order to make the support mechanism 2 also have a simple structure, to save the construction cost of the support mechanism 2, and to achieve modular rapid replacement and expansion effects, please refer to Figure 2As shown, in a preferred embodiment, the support mechanism 2 includes: a plurality of transverse support steel sections 211 arranged in parallel; a plurality of longitudinal support steel sections 212, wherein the plurality of longitudinal support steel sections 212 are arranged in parallel between two adjacent transverse support steel sections 211, and the two ends of the longitudinal support steel sections 212 are respectively welded to two adjacent transverse support steel sections 211, and an installation opening 22 is formed between two adjacent transverse support steel sections 211 and every two adjacent longitudinal support steel sections 212, and the plurality of transverse support steel sections 211 and the plurality of longitudinal support steel sections 212 are welded to form a support unit 21; wherein the width of the transverse support steel section 211 is the same as the width of the longitudinal support steel section 212, and the width between the outer edge of the mounting plate 112 and its inner edge at the fixing opening is less than half the width of the transverse support steel section 211.

[0053] The transverse support steel 211 and the longitudinal support steel 212 can be directly formed by cutting or welding the original steel into different lengths, thereby significantly reducing the manufacturing cost of the support mechanism 2. In subsequent use, depending on production needs, the length of the transverse support steel 211 can be extended, or new transverse support steels 211 can be added, and correspondingly more longitudinal support steels 212 can be welded to form more installation openings 22, thereby achieving rapid construction and expansion of the support mechanism 2 and achieving a modular effect. By limiting the width between the outer edge of the mounting plate 112 and its inner edge at the fixed opening to less than half the width of the transverse support steel 211, multiple filter mechanisms 1 can be placed in the installation opening 22 at the same time without interfering with each other, thereby improving the convenience of installing and removing the filter mechanism 1. Specifically, the transverse support steel 211 and the longitudinal support steel 212 can be made of I-beams, channel steels, or square steels to provide good structural strength.

[0054] In order to make the filter unit have good filtering effect and realize modular rapid replacement and cleaning effect, please refer to Figure 4 As shown, in a preferred embodiment, the filter mechanism 1 includes a filter unit 14 composed of multiple pebbles of different particle sizes, and the filter unit 14 is arranged in the accommodating space 13; the filter unit 14 includes a first filter layer 141, a second filter layer 142, a third filter layer 143, and a fourth filter layer 144 stacked in sequence from top to bottom; wherein, the particle size of the multiple pebbles constituting the first filter layer 141 is between 2mm and 4mm, the particle size of the multiple pebbles constituting the second filter layer 142 is between 4mm and 8mm, the particle size of the multiple pebbles constituting the third filter layer 143 is between 8mm and 16mm, and the particle size of the multiple pebbles constituting the fourth filter layer 144 is between 16mm and 24mm.

[0055] Pebbles have the advantages of high hardness, impact resistance, high temperature resistance, and low cost. Based on the shape of the pebbles, the filter unit 14 formed by the pebbles can naturally have multiple pores, thereby achieving good water permeability and filtration performance. In addition, the filter unit 14 composed of pebbles can be quickly dug out and cleaned, and the filter unit 14 can be quickly replaced by laying a new layer of pebbles, thereby increasing the speed of cleaning and replacing the filter unit 14 and achieving a modular effect. By laying pebbles of different sizes to form the first filter layer 141, the second filter layer 142, the third filter layer 143, and the fourth filter layer 144, the residue particles of different sizes in the wash water can be filtered and removed, thereby achieving a good filtration effect.

[0056] To ensure the rapid flow of filtered cleaning water, please refer to Figure 1 As shown, in a preferred embodiment, a plurality of filter holes are formed on the filter bottom plate 122 and the four filter side plates 121, and the ratio of the area of ​​the plurality of filter holes to the area of ​​the filter bottom plate 122 and the plurality of filter side plates 121 is greater than the preset porosity, and the fourth filter layer 144 has a preset porosity, and the preset porosity is greater than the preset porosity.

[0057] By providing filter holes on the filter base plate 122 and the four filter side plates 121, filtered wash water can flow out quickly. By limiting the preset porosity of the filter holes to a value greater than the preset porosity of the fourth filter layer 144, the flow rate of water flowing out of the filter holes is ensured to be greater than the flow rate of water passing through the fourth filter layer 144, thereby ensuring continuous water flow and achieving a better filtration effect. Specifically, the preset porosity of the fourth filter layer 144 can be between 10% and 12%. Accordingly, the preset porosity of the filter base plate 122 and the four filter side plates 121 should be greater than 12%.

[0058] To further improve the structural strength of the filter mechanism 1 so that it can accommodate a large amount of cleaning water without deformation, please refer to Figure 1 As shown, in a preferred embodiment, the filter mechanism 1 includes: four reinforcing ribs 15 arranged in the accommodating space 13, the reinforcing ribs 15 extend radially outward from the middle of the accommodating space 13 to the filter side plate 121 and the water-blocking side plate 111, the four reinforcing ribs 15 are welded to each other in the middle of the accommodating space 13, and a connecting port 151 is formed on the reinforcing ribs 15, and the height of the lower edge of the connecting port 151 is higher than the height of the mounting plate 112.

[0059] By providing reinforcing ribs 15 within the accommodation space 13, the structural strength of the filter mechanism 1 can be effectively improved. After a large amount of water is injected into the filter mechanism 1, the reinforcing ribs 15 restrain the water-blocking side plates 111, the filter side plates 121, and the filter bottom plate 122 from deforming. Providing a connecting port 151 on the reinforcing ribs 15 also ensures the fluidity of the cleaning water, thereby guaranteeing the filtration effectiveness of the filter unit 14. Specifically, the reinforcing ribs 15 can be made of steel plate to save costs and provide good structural strength. The reinforcing ribs 15 can also be coated with a waterproof and rust-proof layer, such as anti-rust paint, to prevent rust from long-term contact with the cleaning water.

[0060] To improve the convenience of placing the filter mechanism 1 into the mounting opening 22 of the support mechanism 2 or taking it out from the mounting opening 22, please refer to Figure 1 As shown, in a preferred embodiment, the filter mechanism 1 further includes: four hanging parts 16, the two ends of the hanging parts 16 are respectively connected to two adjacent water-blocking side plates 111, and the four hanging parts 16 are distributed at the four corners of the rectangle formed by the four water-blocking side plates 111. By installing the hanging parts 16 in the filter mechanism 1 to fix the hooks of the hanging equipment, the convenience of installing or removing the filter mechanism 1 by the hanging equipment can be effectively improved. Specifically, the hanging parts 16 can be inverted U-shaped steel bars and welded to the water-blocking side plates 111. The hanging parts 16 can also be coated with a waterproof and rust-proof layer, such as anti-rust paint, to prevent them from rusting due to long-term contact with cleaning water.

[0061] To reduce vibration interference between adjacent filter mechanisms 1, refer to Figure 4 As shown, in a preferred embodiment, the slag filtering device includes: a rock wool filler 3 filled between adjacent filtering mechanisms 1, the rock wool filler 3 is wedge-shaped, and both sides of the rock wool filler 3 are respectively abutted against the outer wall surfaces of the two adjacent filtering mechanisms 1, and the lower end of the rock wool filler 3 extends toward the installation port 22 to fill between the support portion and the support unit 21.

[0062] By installing rock wool fillers 3 between filter mechanisms 1, vibrations generated during the filling, draining, installation, or removal of filter mechanisms 1 are absorbed by the rock wool fillers 3 without affecting the remaining adjacent filter mechanisms 1 and support mechanisms 2. The wedge-shaped rock wool fillers 3 also enhance the ease of installation of the filter mechanisms 1. Furthermore, the rock wool fillers 3 prevent wash water containing slag and impurities from leaking from the joint between the two filter mechanisms 1 into the filtered water collection area below, thereby ensuring the cleanliness of the filtered water.

[0063] To further prevent unfiltered cleaning water from overflowing directly from the joint between two adjacent filter units 1, please refer to Figure 4As shown, in a preferred embodiment, the slag filtering device further includes a sealing member 4 provided on two adjacent filtering mechanisms 1; the sealing member 4 includes: a transverse sealing portion; and two longitudinal sealing portions extending downwardly from opposite sides of the transverse sealing portion; wherein the two longitudinal sealing portions respectively abut against the inner walls of the water-blocking side plates 111 of the two adjacent filtering mechanisms 1, and the transverse sealing portions simultaneously abut against the upper edges of the water-blocking side plates 111 of the two adjacent filtering mechanisms 1, so that the gap between the two adjacent filtering mechanisms 1 can be sealed by the sealing member 4.

[0064] By sealing the gap between two adjacent filter mechanisms 1 with the seal 4, it is possible to effectively prevent unfiltered cleaning water from overflowing and flowing directly into the filtered water collection area, thereby ensuring the cleanliness of the filtered water. Specifically, the seal 4 can be a detachable inverted U-shaped rubber member to provide good sealing performance.

[0065] In order to ensure that the filter mechanism 1 can be stably installed and supported, please refer to Figure 2 and Figure 4 As shown, in a preferred embodiment, the support mechanism 2 further includes: a plurality of support columns 23, which are fixedly disposed at at least a portion of the intersection of the transverse support steel sections 211 and the longitudinal support steel sections 212 to support the support unit 21. The plurality of support columns 23 enable the support mechanism 2 to stably support the filter mechanism 1 and ensure stability during installation or removal of the filter mechanism 1. Specifically, the support columns 23 may be made of concrete to reduce costs and provide good structural strength.

[0066] The above are only a few embodiments of the present invention. Those skilled in the art can make various changes or modifications to the embodiments of the present invention based on the contents disclosed in the application documents without departing from the spirit and scope of the present invention. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

Claims

1. A slag filtering device, characterized in that: comprising a plurality of filtering mechanisms and a supporting mechanism for supporting the plurality of filtering mechanisms; The filtering mechanism comprises: Support part; a filter portion disposed on a lower side of the support portion; The supporting mechanism comprises: A support unit, wherein the support unit has a plurality of mounting openings, and the plurality of filtering mechanisms are respectively disposed in the plurality of mounting openings; Wherein, the filter portion can pass through the installation opening, and the support portion can abut against the upper surface of the support unit to support the filter mechanism; The filtering mechanism further comprises: Four water-blocking side plates, the four water-blocking side plates are arranged in a rectangular shape, and adjacent water-blocking side plates are sealed and welded; A mounting plate with a rectangular outer contour, wherein the outer edge of the mounting plate is sealed and welded to the lower edges of the four water-blocking side plates, and a rectangular fixing opening is formed in the middle of the mounting plate; Four filter side plates, the four filter side plates are arranged in a rectangular shape, adjacent filter side plates are sealed and welded, and the upper edges of the four filter side plates are sealed and welded to the inner edges of the fixing openings of the mounting plate; A rectangular filter bottom plate, the filter bottom plate being seal-welded to the lower edges of the four filter side plates; The four water-blocking side plates and the mounting plate are welded to form the support portion, the four filter side plates and the filter bottom plate are welded to form the filter portion, and the four water-blocking side plates, the mounting plate, the four filter side plates, and the filter bottom plate are surrounded together to form a receiving space; The support mechanism further comprises: Multiple horizontal support steel sections arranged in parallel; A plurality of longitudinal support profiles, wherein the plurality of longitudinal support profiles are arranged in parallel between two adjacent transverse support profiles, and both ends of the longitudinal support profiles are respectively welded to two adjacent transverse support profiles. Between two adjacent transverse support profiles, one mounting opening is formed between each two adjacent longitudinal support profiles. The plurality of transverse support profiles and the plurality of longitudinal support profiles are welded together to form the support unit. The width of the transverse support steel is the same as the width of the longitudinal support steel, and the width between the outer edge of the mounting plate and the inner edge thereof at the fixing opening is less than half the width of the transverse support steel; The filtering mechanism includes a filtering unit composed of a plurality of pebbles of different particle sizes, and the filtering unit is arranged in the accommodating space; The filter unit includes a first filter layer, a second filter layer, a third filter layer, and a fourth filter layer stacked in sequence from top to bottom; The particle size of the pebbles constituting the first filter layer is between 2 mm and 4 mm, the particle size of the pebbles constituting the second filter layer is between 4 mm and 8 mm, the particle size of the pebbles constituting the third filter layer is between 8 mm and 16 mm, and the particle size of the pebbles constituting the fourth filter layer is between 16 mm and 24 mm. The filtering mechanism further comprises: Four reinforcing ribs are provided in the accommodating space, the reinforcing ribs extending radially outward from the middle of the accommodating space to the filter side plate and the water blocking side plate, the four reinforcing ribs are welded to each other in the middle of the accommodating space, a communication opening is formed on the reinforcing ribs, and the height of the lower edge of the communication opening is higher than the height of the mounting plate; Four hanging parts, both ends of which are respectively connected to two adjacent water-blocking side plates, and the four hanging parts are distributed at the four corners of a rectangle formed by the four water-blocking side plates; The slag filtering device further comprises: A rock wool filler filled between adjacent filter mechanisms, wherein the rock wool filler is wedge-shaped, with two sides of the rock wool filler respectively abutting against the outer wall surfaces of two adjacent filter mechanisms, and a lower end of the rock wool filler extending toward the mounting opening to fill between the support portion and the support unit; A sealing member is provided on two adjacent filter mechanisms; the sealing member comprises: a transverse sealing portion; and two longitudinal sealing portions extending downwardly from opposite sides of the transverse sealing portion; wherein the two longitudinal sealing portions respectively abut against the inner walls of the water-blocking side plates of the two adjacent filter mechanisms, and the transverse sealing portions simultaneously abut against the upper edges of the water-blocking side plates of the two adjacent filter mechanisms, so that the gap between the two adjacent filter mechanisms can be sealed by the sealing member.

2. The slag filtering device according to claim 1, characterized in that: A plurality of filter holes are formed on the filter bottom plate and the four filter side plates, and the ratio of the area of ​​the plurality of filter holes to the area of ​​the filter bottom plate and the plurality of filter side plates is greater than a preset opening ratio. The fourth filter layer has a preset porosity, and the preset opening ratio is greater than the preset porosity.

3. The slag filtering device according to claim 1, wherein: The support mechanism further comprises: A plurality of support columns are fixedly arranged at the intersection of at least part of the transverse support steel and the longitudinal support steel to support the support unit.

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