Building type crushing and filling system

Abstract

The embodiment of the utility model provides a building type crushing and filling system which comprises a crushing system and a filling device, the crushing system is used for crushing materials and conveying the crushed materials with the preset granularity to the filling device, and the filling device is used for filling the materials with the preset granularity. The filling device is arranged to convey materials output by the crushing system to a preset filling area. The crushing system comprises a building body and a crushing device arranged on the building body and used for crushing materials. According to the utility model, the layout of each device is more reasonable, and the occupied space is smaller; the integrated full-process continuous operation including material crushing and filling can be realized; and when maintenance and change are needed, assembly can be directly carried out by taking a building as a unit, so that the influence on other equipment is reduced.

Description

Technical Field

[0001] This utility model relates to the field of coal mine filling equipment manufacturing, and in particular to a tower-type crushing and filling system. Background Technology

[0002] Coal gangue is a solid waste generated during coal mining and washing. It is a dark gray rock with a low carbon content and harder than coal, which is formed alongside coal seams during coal formation. Large-scale stockpiling of coal gangue not only occupies land and impacts the ecological environment, but the leachate from the gangue also pollutes the surrounding soil and groundwater. Furthermore, coal gangue contains combustible materials that can spontaneously combust under suitable conditions, releasing harmful gases such as sulfur dioxide, nitrogen oxides, carbon oxides, and soot, polluting the atmosphere and affecting the health of residents in mining areas.

[0003] Coal gangue, as a type of solid waste from the mining industry, leaves behind numerous goaf areas. If not treated promptly, these goaf areas can grow larger and larger, potentially causing sudden collapses of the roof strata. This not only endangers underground operations but also causes movement and deformation of the overlying strata and even the surface layer, leading to severe geological disasters such as surface subsidence and ground fissures, severely damaging surface structures. Furthermore, the large-scale stockpiling of coal gangue not only occupies land and impacts the ecological environment, but the leachate from the gangue also pollutes the surrounding soil and groundwater. Moreover, coal gangue contains combustible materials that can spontaneously combust under suitable conditions, releasing harmful gases such as sulfur dioxide, nitrogen oxides, carbon oxides, and soot, polluting the atmosphere and affecting the health of residents in the mining area.

[0004] With the rapid development of the times, the problem of ground subsidence caused by abandoned coal mines has become serious. Therefore, a large amount of coal gangue is needed to fill subsidence areas to prevent further ground collapse and improve coal mining efficiency. Current methods use gangue backfilling to achieve coal gangue separation. After the gangue is crushed to a certain particle size, it is mixed with additives (such as water, fly ash, cement, etc.) and then transported to the goaf or collapse zone. Existing coal gangue crushing equipment generally uses a flat-laid ground infrastructure construction method. This method occupies a large ground area, resulting in high construction and maintenance costs. Furthermore, how to more economically and efficiently fill the goaf with crushed coal gangue is one of the urgent problems that existing technicians need to solve. Utility Model Content

[0005] The purpose of this utility model embodiment is to provide a tower-type crushing and filling system to solve the problems existing in the prior art. To solve the technical problems, the embodiments of this utility model adopt the following technical solutions:

[0006] One aspect of this utility model provides a tower-type crushing and filling system, which includes a crushing system and a filling device. The crushing system is used to crush materials and transport the crushed materials to a predetermined particle size to the filling device. The filling device is configured to transport the materials output by the crushing system to a preset filling area. The crushing system includes a tower and a crushing device disposed on the tower for crushing materials.

[0007] In some embodiments, the crushing system further includes a finished product silo, which is provided with a finished product tank configured to receive the material having a predetermined particle size, the outlet of the finished product tank being connected to the filling device.

[0008] In some embodiments, the building includes a primary crushing tower and a finished product crushing tower, both of which are equipped with crushing devices for crushing materials.

[0009] In some embodiments, a secondary crushing tower is provided between the primary crushing tower and the finished product crushing tower, and the crushing device is provided in the secondary crushing tower. A particle screening device is also provided in the primary crushing tower, the finished product crushing tower and / or the secondary crushing tower. The particle screening device is configured to screen the crushed material and convey the crushed material according to the particle size of the crushed material.

[0010] In some embodiments, the building structure includes a multi-layer frame structure, the crushing system includes multiple crushing devices, each crushing the material in stages; at least one of the crushing devices is located in the building structure; based on the crushing sequence, the discharge port of the previous crushing device is connected to the inlet of the next crushing device adjacent to it.

[0011] In some embodiments, when the number of crushing devices installed on the building is greater than one, each crushing device is installed on a different floor of the building.

[0012] In some embodiments, the crushing system performs multi-stage crushing of the material through the plurality of crushing devices, wherein the crushing device at the final stage of crushing is connected to the filling device through a mixing device; and / or, the crushing device at the final stage of crushing is located at the bottom floor of the building or at the ground outside the building.

[0013] In some embodiments, the crushing system further includes a wet mill, a buffer silo, and a lifting device. The wet mill is installed inside the building or on the ground outside the building. The crushing system performs multi-stage crushing of the material through the multiple crushing devices and the wet mill. The wet mill corresponds to the final stage of crushing. The discharge port of the crushing device in the second-to-last stage of crushing is connected to the inlet of the wet mill through the lifting device and the buffer silo. The discharge port of the wet mill is connected to the filling device through a buffer tank.

[0014] In some embodiments, the discharge port of the crushing device in the secondary crushing stage is connected to the inlet of the lifting device via a first conveying device, the discharge port of the lifting device is connected to the inlet of the buffer hopper via a second conveying device, and the discharge port of the buffer hopper is connected to the inlet of the wet mill.

[0015] In some embodiments, a third conveying device with weighing function is provided between the outlet of the buffer hopper and the inlet of the wet mill;

[0016] And / or,

[0017] The buffer silo has a vertical tank structure, and the inlet of the buffer silo has a predetermined height that is higher than the height of its outlet.

[0018] In some embodiments, the crushing apparatus includes a toothed roll crusher and / or a smooth roll crusher, and the wet mill is a ball mill or a rod mill.

[0019] In some embodiments, the crushing device includes a first-stage crushing device and a second-stage crushing device, wherein the second-stage crushing device is the secondary final-stage crushing device; the multi-layer frame structure includes at least a first layer, a second layer and a third layer arranged sequentially from bottom to top, the first-stage crushing device is disposed on the third layer, the second-stage crushing device is disposed on the second layer or on a fixed base disposed on the ground, and the wet mill is disposed on the first layer or on the ground outside the building.

[0020] In some embodiments, both the first-stage crushing device and the second-stage crushing device are toothed roll crushers, and the wet mill is a ball mill.

[0021] In some embodiments, the building includes a multi-layer frame structure, and the crushing system further includes a wet mill, a buffer silo, and a lifting device. The wet mill is located inside the building or on the ground outside the building. The crushing device is located on a floor of the building above the wet mill. The discharge port of the crushing device is connected to the inlet of the wet mill through the lifting device and the buffer silo. The discharge port of the wet mill is connected to the filling device through a buffer tank.

[0022] In some embodiments, the preset filling area includes one or more of the following: goaf, accident pool, delamination zone, and abandoned roadway.

[0023] This invention, on the one hand, optimizes the layout of the primary crushing tower, finished product crushing tower, and finished product storage tower by designing a more rational layout for each device, thus reducing the footprint. Multi-stage crushing further refines the material, enabling integrated, continuous operation encompassing crushing and filling. When maintenance or modifications (addition, reduction, or replacement of towers) are required, assembly can be performed directly on a tower-by-tower basis, minimizing impact on other equipment. On the other hand, by adopting a separate tower-style construction and incorporating multi-stage crushing devices within the tower structure, the crushed coal gangue material exhibits uniform particle size, high powder content, and minimal segregation after slurry preparation. This results in lower pipeline resistance during filling, greater underground diffusion, and improved filling efficiency. Furthermore, the overall footprint is smaller, and the highly integrated devices within the tower offer multiple functions and reduce the need for conveying equipment, saving energy. It also facilitates centralized monitoring and intelligent control, making operation and maintenance more convenient and fully meeting various requirements. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of the first embodiment of the tower-type crushing and filling system of this utility model;

[0026] Figure 2 This is a schematic diagram of the first modified example of the first embodiment of the tower-type crushing and filling system of this utility model;

[0027] Figure 3 This is a schematic diagram of a second variation of the first embodiment of the tower-type crushing and filling system of this utility model;

[0028] Figure 4This is a schematic diagram of the third variation of the first embodiment of the floor-type crushing and filling system of this utility model.

[0029] Figure 5 This is a first schematic diagram of the planar structure of the second embodiment of the floor-type crushing and filling system of this utility model;

[0030] Figure 6 This is a second schematic diagram of the planar structure of the second embodiment of the floor-type crushing and filling system of this utility model;

[0031] Figure 7 This is a first three-dimensional schematic diagram of the second embodiment of the floor-type crushing and filling system of this utility model;

[0032] Figure 8 This is a second schematic diagram of the three-dimensional structure of the second embodiment of the tower-type crushing and filling system of this utility model;

[0033] Figure 9 This is a schematic diagram of the three-dimensional structure of the second embodiment of the floor-type crushing and filling system of this utility model, with the layer plates removed.

[0034] Figure label:

[0035] 100: Primary crushing tower; 200: Finished product crushing tower; 300: Finished product silo; 400: Crushing device; 500: Particle screening device; 600: Finished product tank; 101: Material pile; 120: Feed silo; 110: Vibrating feeder; 710: Mixing and stirring device; 720: Pumping device; 810:

[0036] Conveyor belt; 820: Lifting device; 900: Dust removal device; 1-First multi-toothed roller crusher; 2-Lifting device; 3-Second conveying device; 4-Buffer silo; 5-Second multi-toothed roller crusher; 6-First conveying device; 7-Weighing belt; 8-Dust removal device; 9-Water tank; 10-Ball mill; 11-Buffer tank; 12-Pumping device; 20-Multi-layer frame structure; 20a-First layer; 20b-Second layer; 20c-Third layer. Detailed Implementation

[0037] Various embodiments and features of this utility model are described herein with reference to the accompanying drawings.

[0038] It should be understood that various modifications can be made to the embodiments described herein. Therefore, the above description should not be considered as limiting, but merely as an example of embodiments. Other modifications within the scope and spirit of this invention will be apparent to those skilled in the art.

[0039] The accompanying drawings, which are included in and form part of this specification, illustrate embodiments of the present invention and, together with the general description of the present invention given above and the detailed description of the embodiments given below, serve to explain the principles of the present invention.

[0040] These and other features of the present invention will become apparent from the following description of preferred forms of embodiments given as non-limiting examples, with reference to the accompanying drawings.

[0041] It should also be understood that although the present invention has been described with reference to some specific examples, those skilled in the art can certainly implement many other equivalent forms of the present invention, which have the features described in the claims and are therefore all within the scope of protection defined herein.

[0042] The above and other aspects, features and advantages of the present invention will become more apparent when taken in conjunction with the accompanying drawings and in view of the following detailed description.

[0043] Specific embodiments of the present invention will now be described with reference to the accompanying drawings; however, it should be understood that the claimed embodiments are merely examples of the present invention, which may be implemented in various ways. Well-known and / or repeated functions and structures have not been described in detail to avoid unnecessary or redundant details that could obscure the present invention. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but merely to serve as the basis and representative basis for the claims to teach those skilled in the art to use the present invention in a variety of substantially any suitable detailed structures.

[0044] This specification may use the phrases “in one embodiment,” “in another embodiment,” “in yet another embodiment,” or “in other embodiments,” all of which may refer to one or more of the same or different embodiments according to the present invention.

[0045] like Figure 1 As shown, the first embodiment of this utility model provides a tower-type crushing and filling system for crushing materials such as coal gangue, tailings, and construction waste into particle sizes suitable for filling goaf areas and filling them. The tower-type crushing and filling system uses tower structures including but not limited to steel tower structures and concrete towers.

[0046] In this embodiment, the tower-type crushing and filling system includes a crushing system and a filling device. The crushing system is used to crush materials and convey the crushed materials to the filling device, which is configured to convey the materials output from the crushing system to a preset filling area. The crushing system includes a tower and a crushing device disposed on the tower for crushing materials. The preset filling area here includes, for example, one or more of a goaf, an emergency pit, a delamination zone, and an abandoned roadway.

[0047] In this embodiment, the tower-type crushing and filling system includes a crushing tower, a finished product storage tower 300, and a filling device. Both the crushing tower and the finished product storage tower 300 are tower-type structures.

[0048] In addition, the tower-type crushing and filling system also includes a conveying device for transporting materials. The conveying device can take various forms at different stages of material transport; for example, in this embodiment, a lifting device, conveyor belt, screw conveyor, chute, or other existing material transport devices can be used.

[0049] For the transportation of materials in a horizontal or near-horizontal direction, such as material transport between different buildings, this embodiment preferably uses a conveyor belt because it is more reliable, easier to maintain, and lower in cost. For the transportation of materials in a vertical or near-vertical direction, such as material transport between buildings, this embodiment preferably uses a lifting device because it can transport materials vertically and continuously, saving floor space. The lifting device can be a hoist, bucket elevator, screw conveyor, etc. This embodiment preferably uses a hoist because it effectively saves floor space. In this embodiment, the devices used for material transport are collectively referred to as conveying devices. Furthermore, various combinations of conveying devices can be used during material transport, such as using a lifting device and a conveyor belt together.

[0050] The crushing tower is configured to crush materials and convey materials crushed to a predetermined particle size to the finished product storage tower 300. The crushing tower is capable of multi-stage crushing. In this embodiment, there can be multiple crushing towers, for example, the crushing tower includes a primary crushing tower 100 and a finished product crushing tower 200.

[0051] The primary crushing tower 100 is equipped with a crushing device 400. The crushing device 400 is used to crush materials; for example, it can be configured to crush large particles into medium or small particles, making the crushed material suitable for filling goaf areas. The crushing device 400 can be a jaw crusher, gyratory crusher, cone crusher, roller crusher, hammer crusher, or impact crusher, etc., with an impact crusher being preferred because it has a large crushing ratio, allowing some material to be directly crushed to or close to the target particle size, reducing the operational pressure on the next stage of crushing.

[0052] During the material crushing process, since the crushing device 400 has difficulty crushing all the material to the required particle size at once, a particle screening device 500 can also be installed in the primary crushing tower 100 in this embodiment.

[0053] Specifically, the particle screening device 500 is configured to screen the crushed material and transport it according to its particle size. For example, the crushed material is transported to the corresponding lower-level crushing device 400 or the finished product tank 600 of the finished product storage building 300. More specifically, if the crushed material already meets the requirements for filling the goaf, it is directly transported to the finished product tank 600; if the particle size of the crushed material does not change significantly, it is transported back to the crushing device 400 in the primary crushing building 100; if the particle size of the crushed material changes significantly, it is transported to the crushing device 400 in a lower-level crushing building (such as the secondary crushing building or the finished product crushing building 200 described later). This embodiment does not limit the specific size of the crushed material's particle size; those skilled in the art can design and select according to actual conditions.

[0054] It should be noted that for materials with relatively soft properties, since they do not affect subsequent filling, the primary crushing tower 100 may not be equipped with a particle screening device 500; or, a particle screening device located in other positions may be used for screening.

[0055] The particle screening device 500 can be an air classifier, a cylindrical screen, a single-stage vibrating screen, a multi-stage vibrating screen, or a roller screen, etc. Preferably, the particle screening device 500 is a multi-stage vibrating screen. The working principle of the multi-stage vibrating screen is that the aperture of multiple screens of different specifications decreases from top to bottom. By using a multi-stage vibrating screen, materials of various particle sizes can be screened, thus preparing the materials to be transported to the corresponding device. Compared with other screening devices, it can also improve screening efficiency and reduce the floor space under the same size.

[0056] Preferably, in the primary crushing tower 100, the particle screening device 500 is located above the crushing device 400, so that the large particle size material after being screened by the particle screening device 500 enters the crushing device 400 by gravity, and the material can be transported without the need for an additional conveying device.

[0057] Material is conveyed from stockpile 101 to feed hopper 120 of primary crushing tower 100, and then from feed hopper 120 onto conveyor (here, conveyor belt 810) to crushing unit 400.

[0058] To ensure uniform material feeding, auxiliary feeding devices, such as vibrating feeders, belt feeders, and magnets, are provided at the feed hopper 120 of the primary crushing tower 100, the feed hopper of the finished product crushing tower 200 (described later), and / or the feed hopper of the finished product crushing tower 300 (not shown in the figure). Vibrating feeders 110 are preferred because they ensure more uniform material feeding.

[0059] The finished product crushing tower 200 is equipped with another crushing device 400. The crushing device in the primary crushing tower 100 and the crushing device 400 in the finished product crushing tower 200 can achieve multi-stage crushing. The crushing device 400 is used to crush materials. For example, it can be configured to crush medium-sized particles formed by the first crushing into small-sized particles, so that the crushed material is suitable for filling the goaf. Note that the feed hopper of the finished product crushing tower 200 does not directly receive materials from the stockpile 101, but receives materials that have been crushed by the crushing device 400 in the upper-level crushing tower (such as the secondary crushing tower or the primary crushing tower 100 described later).

[0060] Similar to the primary crushing tower 100, the finished product crushing tower 200 may also selectively be equipped with a particle screening device 500. The particle screening device 500 of the finished product crushing tower 200 is configured to screen the material crushed by the crushing device 400 of the finished product crushing tower 200, and transport the crushed material according to its particle size. For example, the crushed material may be transported to the crushing device 400 of the finished product crushing tower 200 or the finished product tank 600 of the finished product storage tower 300. Alternatively, when the primary crushing tower 100 does not have a particle screening device 500, the material crushed by the primary crushing tower 100 can also enter the particle screening device 500 in the finished product crushing tower 200 for screening. In this case, the particle screening device 500 can transport the crushed material according to its particle size to the crushing device 400 of the primary crushing tower 100, the crushing device 400 of the finished product crushing tower 200, or the finished product tank 600 of the finished product storage tower 300.

[0061] Preferably, in the finished product crushing tower 200, the particle screening device 500 is located below the crushing device 400, so that the material after being crushed by the crushing device 400 enters the particle screening device 500 by gravity, and the material can be transported without the need for an additional conveying device.

[0062] It should be noted that the particle size values ​​for large, medium, and small particles mentioned above are relative values, and the specific particle size can be adjusted according to the actual operating conditions of each crushing plant. Separating and conveying materials according to particle size can be found in existing technologies, and therefore will not be elaborated upon here.

[0063] For example, when the particle screening device 500 performs three-stage screening (i.e. screening large particle size material, medium particle size material, and small particle size material), for coal gangue, the particle size of large particle size material is preferably >40mm, the particle size of medium particle size material is preferably 3mm to 40mm, and the particle size of small particle size material is preferably <3mm.

[0064] In this embodiment, according to the material conveying direction, the primary crushing tower 100 is the uppermost tower, and the finished product crushing tower 200 is the lowermost tower. The finished product storage tower 300 is equipped with a finished product tank 600 configured to receive the material with a predetermined particle size, and the outlet of the finished product tank 600 is connected to a filling device.

[0065] More specifically, the finished product tank 600 is used to receive material that has been crushed by the crushing device 400 in the upper-level crushing tower (such as the primary crushing tower 100, the secondary crushing tower or the finished product crushing tower 200 described later), that is, material suitable for filling the goaf.

[0066] The filling device is configured to mix the material from the finished product tank 600 with mixed additives (such as water, fly ash, cement, etc.) and transport the mixed material to the goaf.

[0067] To prevent unsuitable materials from being injected into the goaf in the event of a malfunction, the filling device can also transport the material to an emergency pool (such as a delamination zone).

[0068] The filling device may include at least one of a mixing and stirring device 710 and a pumping device 720. The mixing and stirring device 710 may be a vertical mixing device or a horizontal mixing device (such as a single-shaft horizontal mixer or a twin-shaft horizontal mixer), and the pumping device 720 may be a plunger pump, a mud pump, a slurry pump, a centrifugal pump, or a vane pump.

[0069] When the filling device is only a mixing and stirring device 710 (not shown in the figure), the mixing and stirring device 710 mixes the material from the finished product tank 600 with the mixing additives (such as water, fly ash, cement, etc.), and the mixed material flows to the goaf by gravity. It should be noted that, since there is no pumping device 720, the heights of the finished product tank 600, the mixing and stirring device 710, and the filling area (goaf) decrease sequentially, and the material is transported by its own gravity. The mixing and stirring device 710 mixes water, powder, granules, etc., evenly. The evenly mixed material has a certain viscosity (concentration), and the concentration reached after stirring ensures that it does not segregate during long-distance gravity flow underground. The gravity flow process of the mixed material is existing technology and will not be described further here.

[0070] When the filling device is only a pumping device 720 (not shown in the figure), the pumping device 720 pumps the material from the finished product tank 600 together with the mixed additives to the goaf.

[0071] When the filling device includes a mixing and stirring device 710 and a pumping device 720 (e.g.) Figure 1 As shown, the mixing and stirring device 710 mixes the material from the finished product tank 600 with the mixing additives, and then the pumping device 720 pumps the mixed material to the goaf area.

[0072] It should be added that, depending on the actual situation, a secondary crushing tower (not shown in the figure) can be added between the primary crushing tower 100 and the finished product crushing tower 200. Similar to the primary crushing tower 100 and the finished product crushing tower 200, the secondary crushing tower is also equipped with crushing devices. Furthermore, as needed, a particle screening device can be selectively installed in the secondary crushing tower to perform multiple crushing and screening of materials between the primary crushing tower 100 and the finished product crushing tower 200. The working principle is basically the same as that of the primary crushing tower 100 and the finished product crushing tower 200, so it will not be described in detail here.

[0073] To enable the tower-type crushing and filling system to operate in low-temperature environments and facilitate winter operations, the system also includes an insulation device (not shown in the figure). This insulation device can be an insulation layer installed around the frame of each tower or heating pipes, etc. In this invention, an insulation layer is preferably used as the insulation device, as it not only provides insulation but also reduces noise and prevents dust pollution.

[0074] The following is combined Figure 1 Taking a crushing plant, including a primary crushing plant 100 and a finished product crushing plant 200, as an example, its workflow is illustrated below:

[0075] Material is conveyed from stockpile 101 to feed hopper 120 of primary crushing tower 100. Material in feed hopper 120 enters vibrating feeder 110 and is spread flat on conveying device (here, conveyor belt 810) under the vibration of vibrating feeder 110. Conveyor belt 810 conveys material to crushing device 400 in primary crushing tower 100. Crushing device 400 crushes large particles of material.

[0076] The crushed material enters the conveying device (here, the lifting device 820 is used as an example, such as a hoist), and the material in the lifting device 820 enters the particle screening device 500 (here, the multi-stage vibrating screen is used as an example).

[0077] After being vibrated by multiple stages of vibrating screens, large-particle materials are crushed again by gravity into the crushing device 400 in the primary crushing tower 100; small-particle materials are conveyed to the lifting device 820 via conveyor belt 810, and the lifting device 820 conveys the small-particle materials to the finished product tank 600 in the finished product warehouse 300; medium-particle materials are conveyed to the lifting device 820 in the finished product crushing tower 200 via conveyor belt 810, and the lifting device 820 conveys the medium-particle materials to the crushing device 400 in the finished product crushing tower 200.

[0078] Thus, the material (after being crushed by the crushing device 400 in the primary crushing tower 100) is further crushed by the crushing device 400 in the finished product crushing tower 200. The material crushed by the crushing device 400 in the finished product crushing tower 200 enters the particle screening device 500 of the finished product crushing tower 200 by gravity for screening. The medium particle size material after screening enters the lifting device 820, which lifts the medium particle size material back into the crushing device 400 of the finished product crushing tower 200 for repeated crushing. The small particle size material formed by crushing passes through the conveyor belt 810 and then directly enters the finished product tank 600 through the lifting device 820 in the finished product storage tower 300.

[0079] In the above process flow, the particle size and powder output of materials at different stages can be adjusted by regulating the outlet size of the crushing device 400 in different crushing towers and the screen size of the multi-stage vibrating screen. Preferably, the outlet size of the crushing device 400 in the primary crushing tower 100 is larger than the outlet size of the crushing device 400 in the finished product crushing tower 200; the screen size of the particle screening device 500 in the primary crushing tower 100 is larger than the screen size of the particle screening device 500 in the finished product crushing tower 200.

[0080] To reduce dust pollution, the tower-type crushing and filling system also includes a dust removal device 900, which includes a negative pressure fan and a dust removal pipeline (e.g., ...) connected to the negative pressure fan. Figure 1 (As shown by the dashed line) and a filtration system (not shown in the figure). The dust removal pipeline is also connected to one or more of the conveying device, the crushing device 400, and the particle screening device 500 to collect the powder generated during the crushing process under negative pressure. This utility model does not limit the location of the dust removal device 900. Preferably, the dust removal device 900 is configured to transport the sucked-in powder to the finished product tank 600, so that the powder mixes with the material in the finished product tank 600, which reduces dust pollution and increases the filling capacity. That is, the finished product tank 600 is also used as a collection tank for collecting powder. Of course, this utility model is not limited to this, and a separate collection tank for collecting powder can also be provided. This utility model does not limit the structure and type of the dust removal device 900. For example, the dust removal device 900 can be an electrostatic precipitator, a bag filter, a cyclone dust collector, a wet scrubber, a cartridge filter, etc. In this utility model, it is preferred to use a dust removal device 900 composed of a negative pressure fan, a dust removal pipeline, and a filtration system. The reason is that it can achieve the dust removal effect more effectively, and it occupies less space and the powder can be utilized.

[0081] To ensure quantitative material delivery, allowing the material to enter the mixing and agitating device 710 and / or pumping device 720 in measured quantities, and to identify the weight of the material at each stage, the tower-type crushing and filling system also includes a weighing device (not shown in the figure). This weighing device is preferably located at the conveying device and / or finished product tank 600, and is used to measure the weight of the material on the conveying device and / or in the finished product tank 600. Weighing control during operation can refer to existing technologies and will not be elaborated here.

[0082] It should be noted that this utility model does not limit the type and structure of various devices such as crusher, particle screening device 500, vibrating feeder 110, conveyor belt 810, lifting device 820, dust removal device 900, and weighing device. Those skilled in the art can select from the existing technology or make adaptive modifications to the various devices in the existing technology according to the actual situation.

[0083] Figure 2 This is a schematic diagram of the first modified example of the tower-type crushing and filling system of this utility model. The following is a description of its structure in conjunction with... Figure 2 The first variation of the tower-type crushing and filling system is described.

[0084] The first variant differs from the above embodiment mainly in that: the primary crushing tower 100 is not equipped with a particle screening device, that is, the particle screening device 500 is only installed in the finished product crushing tower 200, and the dust removal device 900 is installed in the primary crushing tower 100.

[0085] At this time, the material is transported from the stockpile 101 to the feed hopper 120 of the primary crushing tower 100. The material in the feed hopper 120 enters the vibrating feeder 110 and is spread flat on the conveying device under the vibration of the vibrating feeder 110. The conveyor belt 810 transports the material to the crushing device 400 in the primary crushing tower 100, which crushes the large-particle material.

[0086] The crushed material is directly fed into the crushing device 400 in the finished product crushing tower 200 via a conveying device (here, the lifting device 820 is used as an example, such as a hoist). The material crushed by the crushing device 400 in the finished product crushing tower 200 is then conveyed to the particle screening device 500 of the finished product crushing tower 200 via a conveying device (here, the lifting device 820 is used as an example) for screening. The medium-sized particles after screening are fed into the crushing device 400 in the finished product crushing tower 200 by gravity for repeated crushing. The small particles formed by crushing are fed into the finished product tank 600 via a conveyor belt 810.

[0087] It should be noted that, at different stages of material conveying, those skilled in the art can use different forms of conveying devices for conveying, and the conveying device can be set inside or outside the crushing tower; this utility model is not limited thereto.

[0088] In the first variation, the particle screening device 500 of the primary crushing tower 100 is omitted, and the material is screened only in the finished product crushing tower 200, which simplifies the process, reduces costs, and facilitates maintenance.

[0089] Figure 3 This is a structural schematic diagram of a second variation of the floor-type crushing and filling system of this utility model. The following is in conjunction with... Figure 3 A second variation of the tower-type crushing and filling system is described.

[0090] The second variation differs from the above embodiment primarily in that: the primary crushing tower 100 does not contain a particle screening device; instead, the particle screening device 500 is only located in the finished product crushing tower 200. The dust removal device 900 is located in the finished product storage tower 300. However, the dust removal device 900 is not configured to transport the sucked-in powder to the finished product tank 600; instead, a separate collection tank for collecting the powder is located in the finished product storage tower 300. In other words, the dust removal device 900 is configured to transport the sucked-in powder to this separately located collection tank. Furthermore, in this variation, some conveying devices (e.g., conveying devices for transporting materials between the finished product crushing tower and the finished product storage tower) are located outside the crushing tower and the finished product storage tower.

[0091] Figure 4 This is a structural schematic diagram of the third variation of the tower-type crushing and filling system of this utility model. The following is in conjunction with... Figure 4 The third variation of the tower-type crushing and filling system is described.

[0092] The main difference between the third and second variations is that after the material is crushed by the crushing device 400 of the primary crushing tower 100, it is conveyed by the conveying device to the particle screening device 500 of the finished product crushing tower 200 for screening.

[0093] Specifically, the material is conveyed from the stockpile 101 to the feed hopper 120 of the primary crushing tower 100. The material in the feed hopper 120 enters the vibrating feeder 110 and is spread flat on the conveying device under the vibration of the vibrating feeder 110. The conveyor belt 810 conveys the material to the crushing device 400 in the primary crushing tower 100, which crushes the large-particle material.

[0094] The crushed material is directly fed into the particle screening device 500 in the finished product crushing tower 200 via a conveying device (here, a combination of conveyor belt 810 and lifting device 820) for screening. After screening, large particles are fed into the crushing device 400 in the primary crushing tower 100 for further crushing; small particles are conveyed to the finished product tank 600 in the finished product warehouse 300; and medium particles are conveyed to the crushing device 400 in the finished product crushing tower 200 for crushing.

[0095] In other words, in the third variation, the particle screening device 500 in the finished product crushing tower 200 receives not only the material crushed by the crushing device 400 in the finished product crushing tower 200, but also the material crushed by the crushing device 400 in the primary crushing tower 100. That is, only one particle screening device 500 is needed to screen the material crushed by the primary crushing tower 100 and the finished product crushing tower 200, reducing production costs and improving efficiency. It can screen materials more effectively and is conducive to reducing power consumption.

[0096] In summary, this embodiment, by designing a primary crushing tower, a finished product crushing tower, and a finished product storage tower, makes the layout of each device more reasonable and occupies less space; multi-stage crushing can further refine the material, realizing an integrated full-process continuous operation of material crushing and filling; when maintenance and changes (addition, reduction, or replacement of towers) are required, they can be directly assembled on a tower-by-tower basis, reducing the impact on other equipment.

[0097] The second embodiment of this utility model provides a tower-type crushing and filling system, which, like the first embodiment, is used to crush materials such as coal gangue, tailings, and construction waste into particle sizes suitable for filling goaf areas and then fill them. It includes a crushing system and a filling device. The crushing system crushes the materials and transports the crushed materials to the filling device, which is configured to transport the materials output from the crushing system to a preset filling area. The crushing system includes a tower structure and a crushing device installed on the tower structure for crushing materials. The tower structure includes, but is not limited to, steel structure towers and concrete towers.

[0098] In this embodiment, considering the existing tower-type coal gangue slurry preparation and filling process, which suffers from problems such as excessive material return during slurry preparation and crushing, low efficiency, difficulty in adjusting gradation, low adaptability to coal gangue moisture content, pipe blockage, poor filling effect, and uneven mixing of materials after crushing; as well as the problems of low concentration, poor structural stability, high power and low efficiency of the entire equipment, and high operating costs of the existing tower-type structure, this embodiment differs from the first embodiment above in that it only sets up one crushing tower, thereby integrating the crushing tower, finished product storage tower and filling device in the above embodiment, so as to realize the completion of multiple operations such as multi-stage crushing, grinding and filling in one crushing tower.

[0099] In one embodiment of this invention, the building structure includes a multi-layer frame structure, and the crushing system includes multiple crushing devices for progressively crushing the material, with at least one of the crushing devices located within the building structure. Based on the crushing sequence, the discharge port of the previous crushing device is connected to the inlet of the adjacent next-level crushing device. In this embodiment, the crushing system does not include a wet mill; instead, it performs multi-stage crushing of the material using the multiple crushing devices.

[0100] Specifically, in this embodiment, the final crushing device is connected to the filling device via a mixing device. Optionally, the final crushing device is located on the ground floor of the building or on the ground outside the building. Specifically, in the above embodiment, the filling device is a pumping device. The material of a predetermined particle size obtained after multi-stage crushing by the various crushing devices is dry material. It is mixed with water, additives, etc., by the mixing device to form a slurry, which is then pumped into the area requiring filling by the pumping device.

[0101] In one specific implementation of the above embodiments, each of the crushing devices can be installed on different floors of the building, with the floor where the next-level crushing device (e.g., the first-level crusher) is located is higher than the floor where the next-level crushing device (e.g., the second-level crusher) is located. The discharge port of the crushing device on the upper floor is connected to the inlet port of the crushing device on the lower floor, and the crushing device located on the lowest floor is connected to the filling device through a mixing device. In another specific implementation of the above embodiments, the final-level crushing device can also be installed on the ground outside the building, specifically on a fixed base on the ground.

[0102] The multi-layered frame structure described here can be installed on the ground via a foundation. This multi-layered frame structure adopts a building-type structure, which, based on its building-type structure and manufacturing process, features low construction cost, compact structure, small footprint, and applicability to higher floors. In particular, the multi-layered frame structure utilizes a steel building structure, which offers advantages such as short construction period, small footprint, and high equipment integration. This enables effective monitoring of equipment operation, improves automation, and facilitates maintenance.

[0103] The multi-layer frame structure includes at least two layers; specifically, the multi-layer frame structure includes, for example, a first layer and a second layer arranged vertically, with the first layer located on the ground and the second layer located above the first layer. In some embodiments, a first-stage crushing device is installed on the second layer, and a second-stage crushing device is installed on the first layer, wherein the first-stage crushing device and the second-stage crushing device are interconnected (in other embodiments, the second-stage crushing device may also be installed on a fixed base installed on the ground outside the building). The first-stage crushing device located on the second layer is connected to the coal gangue silo to receive material from the silo and perform initial crushing. The material after the initial crushing can then enter the second-stage crushing device for further crushing, thus allowing the material to continuously pass through both the first-stage and second-stage crushing devices to achieve multi-stage crushing.

[0104] In the above embodiment, the first-stage crushing device located in the second layer and the second-stage crushing device located in the first layer achieve two-stage crushing of the material in the coal gangue raw gangue bin, and the material crushed to a predetermined particle size can be obtained through two-stage crushing.

[0105] The first-stage crushing device and the second-stage crushing device in the above embodiments can take various forms. For example, the first-stage crushing device and the second-stage crushing device can be toothed roll crushers, smooth roll crushers, jaw crushers, hammer crushers, cone crushers, impact crushers, etc., especially multi-toothed roll crushers. The multi-toothed roll crushers mentioned here can be double-toothed roll crushers, four-toothed roll crushers, or six-toothed roll crushers. After the material is crushed in multiple stages by the above-mentioned multiple crushing devices, material with a predetermined particle size can be obtained.

[0106] Unlike the above embodiments, in another modified embodiment, the crushing system includes a wet mill. The crushing system performs multi-stage crushing of the material through various crushing devices and the wet mill, with the wet mill serving as the final crushing stage. Furthermore, unlike the previous embodiment where the crushing devices are connected to the filling pumping device via a mixing device, in this modified embodiment, the wet mill can be directly connected to the filling pumping device, or the wet mill can be connected to the filling pumping device via a buffer tank. This simplifies the use of a dedicated mixing device, further reducing costs and the overall footprint of the crushing and filling system.

[0107] In some specific implementations of this modified embodiment, the building body includes a multi-layer frame structure, the crushing system further includes a buffer silo and a lifting device, at least one crushing device is installed inside the building body, and the wet mill is installed inside the building body or on the ground outside the building body.

[0108] In some specific implementations, there is one crushing device, the discharge port of which is connected to the feed port of the wet mill through the lifting device and the buffer hopper, and the discharge port of the wet mill is connected to the filling device through the buffer tank.

[0109] Optionally, in some specific implementations, there is one crushing device. The multi-layer frame structure includes a first layer and a second layer arranged vertically. The first layer is located on the ground, and the second layer is located above the first layer. The crushing device is located on the second layer, and the wet mill is located on the first layer. The crushing device located on the second layer is connected to the raw coal gangue bin to receive and crush material from the raw coal gangue bin. The crushing device is a double-toothed roll crusher or a four-toothed roll crusher, and the wet mill is a ball mill. Further, the discharge port of the crushing device is connected to the inlet of the lifting device through a first conveying device. The inlet of the lifting device is, for example, located on the first layer. The material is lifted vertically upwards by the lifting device. The discharge port of the lifting device is connected to the inlet of the buffer silo through a second conveying device. The buffer silo is a vertical tank structure.

[0110] In some other specific implementations, there are multiple crushing devices. Based on the crushing sequence, the discharge port of the previous crushing device is connected to the inlet of the next adjacent crushing device. The discharge port of the crushing device in the second-to-last crushing stage is connected to the inlet of the wet mill through the lifting device and the buffer hopper. The discharge port of the wet mill is connected to the filling device through the buffer tank.

[0111] Optionally, in some implementations, there are multiple crushing devices, each located on a different floor of the building. The discharge port of the crushing device on the upper floor is connected to the inlet of the crushing device on the adjacent lower floor. The discharge port of the lowest-level crushing device (i.e., the secondary crushing device) is connected to the inlet of the wet mill via the lifting device and the buffer silo. Specifically, the discharge port of the lowest-level crushing device is connected to the inlet of the lifting device via a first conveying device, the discharge port of the lifting device is connected to the inlet of the buffer silo via a second conveying device, and the discharge port of the buffer silo is connected to the inlet of the wet mill.

[0112] Furthermore, in this modified embodiment, the material is crushed by the crushing device, and the lifting device is used to transport the crushed material to the buffer hopper, and the material discharged from the buffer hopper is ground in the wet mill.

[0113] The crushing devices described herein include toothed roll crushers and / or smooth roll crushers and / or jaw crushers, hammer crushers, cone crushers, impact crushers, and cone crushers, etc., and the wet mill is a ball mill or rod mill. The wet mill described herein can be particularly located within the building, for example, on the lowest floor, or on the ground outside the building. The secondary crushing device can be located on the second or first floor of the building, or on the ground outside the building.

[0114] Furthermore, the outlet of the buffer hopper is located at, for example, the height of the first layer, while the inlet of the buffer hopper generally has a predetermined height, such as the height of the second layer or higher. The height of the buffer hopper is related to the required amount of material. The buffer hopper effectively controls the feed rate of the wet mill, thereby adjusting the amount of material being ground.

[0115] Specifically, the crushed material is lifted to a predetermined height by the lifting device and then conveyed to the inlet of the buffer silo by the second conveying device. The material is then discharged from the outlet of the buffer silo. Further, a third conveying device with weighing function is installed between the outlet of the buffer silo and the inlet of the wet mill. In this way, the material crushed by the crushing device is discharged from the buffer silo and ground by the wet mill.

[0116] Thus, the outlet of the buffer hopper is connected to the inlet of the third conveying device, which may be, for example, a weighing belt. The outlet of the third conveying device is connected to the inlet of the wet mill. The third conveying device is used to measure the volume or weight of the material while conveying it.

[0117] Finally, the weighed material is ground in the wet mill. The discharge port of the wet mill is connected to a filling device. Since the wet mill itself can grind the material with water to form a slurry, the ground material output from the wet mill can be filled into a pre-designated filling area, such as an underground goaf, through a pumping device. Preferably, the crushing system also includes a buffer tank. The discharge port of the wet mill is connected to the filling device through the buffer tank. The buffer tank can buffer and dilute the material, facilitating the implementation of pumping operations.

[0118] In one specific embodiment, the tower-type crushing and filling system can achieve multi-stage crushing and grinding of materials, thus achieving finer crushing and shaping based on particle size compared to two-stage crushing. Other devices, such as filling devices, can refer to the first embodiment described above. A detailed description is provided below with reference to the accompanying drawings.

[0119] like Figures 5 to 9As shown, the tower-type crushing and filling system includes a multi-layer frame structure 20, a buffer silo 4, and a lifting device 2. The multi-layer frame structure 20 includes a first layer 20a, a second layer 20b, and a third layer 20c arranged sequentially. The first layer 20a is located on the ground, the second layer 20b is located above the first layer 20a, and the third layer 20c is located above the second layer 20b. A crushing device is installed on each of the three layers from top to bottom: the third layer 20c, the second layer 20b, and the first layer 20a, thereby achieving multi-stage crushing through the three crushing devices.

[0120] Specifically, a first multi-toothed roller crusher 1 (equivalent to a first-stage crushing device) is installed on the third layer 20c of the multi-layer frame structure 20. It is directly connected to the raw coal gangue bin via, for example, a belt conveyor. The first multi-toothed roller crusher 1 can be flexibly arranged according to the location of the raw coal gangue bin on site, without the need to set the position sequence or positioning. A second multi-toothed roller crusher 5 (equivalent to a second-stage crushing device) is installed on the second layer 20b of the multi-layer frame structure 20. A ball mill 10 (equivalent to a wet mill), a buffer tank 11, and a pumping device 12 are sequentially installed on the first layer 20a of the multi-layer frame structure 20.

[0121] In another specific embodiment, the multi-layer frame structure includes a first layer (which may also be the ground) and a second layer, wherein the first multi-toothed roller crusher 1 is disposed on the second layer, the second multi-toothed roller crusher 5 is disposed on a fixed base on the first layer (or the ground), the ball mill 10 (equivalent to a wet mill), the buffer tank 11 and the pumping device 12 may be disposed on the first layer (or the ground), and the buffer silo 4 and the lifting device 2 are disposed on the ground outside the building.

[0122] The lifting device and buffer silo can be installed inside or outside the building. The secondary crushing device can be installed on the second floor, the first floor, or the ground. The ball mill, buffer tank, etc. can be installed on the first floor or the ground. The specific layout can be set according to the construction site conditions.

[0123] Considering that existing crushing devices mostly employ impact crushers, hammer crushers, and jaw crushers, these devices are generally large in size, vibrate significantly, require frequent replacement of wear parts, consume a lot of energy, and produce relatively uneven crushed materials, resulting in significant drawbacks in the continuous mixing and filling operation mode of coal gangue backfilling. For the first-stage and second-stage crushing devices in this embodiment, toothed roller crushers can be used. Toothed roller crushers are small in size and vibrate less, offering significant advantages in matching with the steel structure of the building and the backfilling device. Furthermore, the materials crushed by toothed roller crushers are relatively uniform, and they also have advantages such as low energy consumption and convenient maintenance. In addition, using the technical solution of this embodiment eliminates the need for a screening device, reducing system complexity and effectively lowering investment costs, system maintenance costs, and difficulty, demonstrating significant advantages. Here, the first multi-toothed roller crusher 1 is preferably a double-toothed roller crusher; the second multi-toothed roller crusher 5 is preferably a four-toothed roller crusher.

[0124] In this embodiment, the first multi-toothed roll crusher 1 is disposed above the second multi-toothed roll crusher 5. The first multi-toothed roll crusher 1 is connected to the second multi-toothed roll crusher 5, for example, through a chute step as a conveying device, so as to ensure that the material after being crushed by the first multi-toothed roll crusher 1 enters the second multi-toothed roll crusher 5 by gravity, thereby making the first multi-toothed roll crusher 1 and the second multi-toothed roll crusher 5 form a multi-stage crushing process.

[0125] In some embodiments, the second multi-toothed roll crusher 5 can also be used independently, for example, by connecting to an external feeder via a chute step, and feeding material to the second multi-toothed roll crusher 5 via the feeder.

[0126] The discharge port of the second multi-toothed roller crusher 5 is connected to the inlet of the lifting device 2 via the first conveying device 6. Specifically, the discharge port of the second multi-toothed roller crusher 5 is connected to the inlet of the first conveying device 6, so that the material after the second crushing by the second multi-toothed roller crusher 5 is conveyed to the inlet of the lifting device 2 via the first conveying device 6. The lifting device 2 lifts the material to a predetermined height, which corresponds to the inlet of the buffer hopper 4.

[0127] Furthermore, the discharge port of the lifting device 2 is connected to the inlet of the buffer silo 4 through the second conveying device 3. The lifting device 2 is used to drop the material onto the second conveying device 3, and then the material is transported to the inlet of the buffer silo 4 through the second conveying device 3.

[0128] A weighing belt 7 (equivalent to a third conveying device) is installed below the discharge port of the buffer silo 4. The weighing belt 7 can not only transport materials, but also weigh the volume or weight of the materials on it. In this way, the materials discharged from the buffer silo 4 are weighed and then transported to the ball mill 10 through the weighing belt 7. Here, by using the ball mill 10, not only can grinding be achieved, but coal gangue materials that meet the particle size requirements can also be obtained.

[0129] Preferably, the outlet of the buffer hopper 4 is directly opposite the inlet of the weighing belt 7, and the outlet of the weighing belt 7 is directly opposite the inlet of the ball mill 10, thereby ensuring that the material can be accurately conveyed without spillage.

[0130] Furthermore, the material discharged through the outlet of the buffer silo 4 is ground and crushed by the ball mill 10. The coal gangue material after being ground and crushed by the ball mill 10 is transported to the buffer tank 11 for further dilution and mixing, and then filled into the pre-set filling areas such as the underground goaf, emergency pool, delamination zone, and abandoned roadway by the pumping device 12. The specific structure of the pumping device 12 here can be the same as that in the first embodiment described above.

[0131] In addition, a dust removal device 8 and a water tank 9 are also provided on the multi-layer frame structure 20. The dust removal device 8 can refer to the structure of the first embodiment described above, and will not be described again here.

[0132] In this embodiment, the device further includes a central control room and a power distribution room, which can be located, for example, on the second floor 20b. The central control room is equipped with a centralized filling control system, which can realize independent start-stop control of individual devices in the tower-type crushing and filling system, as well as interlocking protection control of multiple processes according to the process, and one-button start-stop control of the entire system, meeting the different needs of different users. By adopting an automatic control system, the start-stop of the entire system and the equipment during pipe blockage repair can be automatically controlled. Centralized control reduces operational difficulty, makes operation more convenient, and saves operating costs.

[0133] In this embodiment, the pulping and filling process is achieved by using multiple toothed roller crushers and ball mills in combination. Firstly, the toothed roller crushers perform multi-stage crushing, resulting in relatively uniform material crushing. The subsequent grinding in the ball mill produces coal gangue with uniform particle size, high powder content, and minimal segregation after pulping. This leads to lower pipeline resistance during filling, greater underground diffusion, and better filling effect. Furthermore, the multi-stage crushing by the toothed roller crushers reduces the feed particle size to the ball mill, achieving the goal of more crushing and less grinding, thus reducing ball mill power and saving energy. Secondly, the ball mill foundation is installed on the ground, and one or more multi-toothed roller crushers are arranged in a crushing sequence on a multi-layer frame structure. Utilizing the advantages of the small size and low vibration of the multi-toothed roller crushers, the impact on the building structure is minimized, effectively reducing the overall floor space and height, and extending service life.

[0134] Furthermore, considering that in existing technologies, if screening equipment is built to screen materials of qualified particle size, the screen is prone to clogging when the moisture content of coal gangue is high, this embodiment uses a ball mill to reduce the use of screening equipment or eliminate the screening device, effectively avoiding the problem of screen clogging due to high moisture content of coal gangue, reducing process risks, reducing operating costs, and improving process efficiency; and the absence of a screening device further reduces system complexity, effectively reducing investment costs, system maintenance costs, and difficulty.

[0135] The pulping and filling process of the tower-type crushing and filling system in this embodiment is as follows: the coal gangue raw material is crushed by at least one multi-toothed roller crusher and then enters the buffer silo 4. After being discharged from the buffer silo 4, it enters the ball mill 10 for grinding to a predetermined particle size and then enters the buffer tank 11 for mixing. After being pumped by the pumping device 12, it is discharged to the underground filling area.

[0136] Based on the above implementation methods, various combinations can be achieved regardless of whether two-stage, three-stage, or even four-stage crushing or more. Different crushing devices can be selected according to requirements. These various combinations include, but are not limited to, different forms such as "double-toothed roll crusher + ball mill", "four-toothed roll crusher + ball mill", "double-toothed roll crusher + four-toothed roll crusher + ball mill", "double-toothed roll crusher + double-toothed roll crusher + ball mill", "four-toothed roll crusher + double-toothed roll crusher + ball mill", "four-toothed roll crusher + four-toothed roll crusher + ball mill", "double-toothed roll crusher + double-toothed roll crusher + double-toothed roll crusher + ball mill", "double-toothed roll crusher + six-toothed roll crusher + ball mill", "double-toothed roll crusher + smooth roller crusher + ball mill", and "four-toothed roll crusher + smooth roller crusher + ball mill".

[0137] The above-mentioned specific implementation adopts "first toothed roll crusher + second toothed roll crusher + ball mill" as the preferred combination. Under the multi-stage crushing combination of "two-stage toothed roll crusher + ball mill", the first stage of crushing is achieved by the first toothed roll crusher (for example, crushing materials with a particle size of no more than 300mm to less than 80mm), the second stage of crushing is achieved by the second toothed roll crusher (for example, crushing materials with a particle size of no more than 80mm to less than 10mm), and finally the ball mill crushes the materials less than 10mm to less than 3mm.

[0138] In this embodiment, when using a "two-stage toothed roller crusher + ball mill" approach, multi-stage crushing before the ball mill can reduce the feed particle size of the ball mill, achieving the goal of more crushing and less grinding, reducing ball mill power, and saving energy. For example, by controlling the feed particle size of the ball mill 10 to be no greater than 10mm, the particle size ratio of the multiple toothed roller crushers can be controlled to 4-5 levels. This allows coal gangue material to be crushed from 300mm to below 10mm based on three-stage crushing. Therefore, the combination of "two-stage toothed roller crusher + ball mill" simplifies the crushing process, reduces costs and energy consumption, and reduces the need for replacing vulnerable parts.

[0139] This embodiment adopts a separate building-type construction form and sets up a multi-stage crushing device within the building structure, which makes the crushed coal gangue material have uniform particle size, high powder content, and is not prone to segregation after slurry preparation. It also results in low pipeline resistance during filling, large underground diffusion, and improved filling effect. In addition, the overall footprint is smaller, the various devices within the building are highly integrated, and it has a variety of equipment and functions. The use of conveying devices is reduced during the process to save energy consumption. At the same time, it is convenient for centralized monitoring and intelligent control, making operation and maintenance more convenient and highly meeting various requirements.

[0140] Furthermore, although the operations are described in a specific order, this should not be construed as requiring these operations to be performed in the specific order shown or in a sequential order. Multitasking and parallel processing may be advantageous in certain environments. Similarly, while several specific implementation details are included in the above discussion, these should not be construed as limiting the scope of this invention. Certain features described in the context of individual embodiments may also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented individually or in any suitable sub-combination in multiple embodiments.

[0141] Although the subject matter has been described using language specific to structural features and / or methodological logic, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. Rather, the specific features and actions described above are merely illustrative examples of implementing the claims.

[0142] The foregoing has described in detail several embodiments of the present utility model, but the present utility model is not limited to these specific embodiments. Those skilled in the art can make various variations and modifications based on the concept of the present utility model, and these variations and modifications should all fall within the scope of protection claimed by the present utility model.

Claims

1. A towered crushing and filling system, characterized in that, The building type crushing and filling system comprises a crushing system and a filling device, the crushing system is used for crushing materials and delivering the materials crushed to a predetermined granularity to the filling device, the filling device is arranged to deliver the materials output by the crushing system to a preset filling area; the crushing system comprises a building body and crushing devices arranged in the building body and used for crushing materials.

2. The shaft-type crushing and filling system as claimed in claim 1, characterized in that, The crushing system further comprises a finished product bin building, which is provided with a finished product tank arranged to receive the materials with the predetermined granularity, and a discharge port of the finished product tank is communicated with the filling device.

3. The shaft-type crushing and filling system as claimed in claim 2, characterized in that, The building body comprises a primary crushing building and a finished product crushing building, and the primary crushing building and the finished product crushing building are both provided with crushing devices used for crushing materials.

4. The shaft-type crushing and filling system as claimed in claim 3, characterized in that, A re-crushing building is arranged between the primary crushing building and the finished product crushing building, the re-crushing building is provided with the crushing devices, and the primary crushing building, the finished product crushing building and / or the re-crushing building are further provided with particle screening devices, the particle screening devices are arranged to screen the crushed materials and deliver the crushed materials according to the granularity of the crushed materials.

5. The shaft-type crushing and filling system as claimed in claim 1, characterized in that, The building body comprises a multi-layer frame structure, the crushing system comprises a plurality of crushing devices used for crushing materials in stages, and at least one of the crushing devices is arranged in the building body; based on a crushing sequence, a discharge port of an upper-stage crushing device is connected to a feeding port of a lower-stage crushing device adjacent to the upper-stage crushing device.

6. The shaft-type crushing and filling system as claimed in claim 5, characterized in that, When the number of the crushing devices arranged in the building body is greater than one, each of the crushing devices is arranged in a different floor of the building body.

7. The shaft-type crushing and filling system as claimed in claim 5, characterized in that, The crushing system crushes the materials in multiple stages through the plurality of crushing devices, the crushing device at the last stage is connected to the filling device through a mixing device; and / or, the crushing device at the last stage is arranged at a bottom floor of the building body or on the ground outside the building body.

8. A floor crushing and packing system as claimed in claim 5 or 6, wherein, The crushing system further comprises a wet mill, a buffer bin and a lifting device, the wet mill is arranged in the building body or on the ground outside the building body, the crushing system crushes the materials in multiple stages through the plurality of crushing devices and the wet mill, wherein the wet mill corresponds to the last stage, a discharge port of the crushing device at a penultimate stage is connected to a feeding port of the wet mill through the lifting device and the buffer bin, and a discharge port of the wet mill is connected to the filling device through a buffer tank.

9. The shaft-style crushing and packing system of claim 8, wherein, A discharge port of the crushing device at the penultimate stage is connected to a feeding port of the lifting device through a first conveying device, a discharge port of the lifting device is connected to a feeding port of the buffer bin through a second conveying device, and a discharge port of the buffer bin is connected to the feeding port of the wet mill.

10. The shaft-style crushing and packing system of claim 8, wherein, A third conveying device with a weighing function is arranged between the discharge port of the buffer bin and the feeding port of the wet mill. And / or, The buffer bin is a vertical tank structure, the feeding port of the buffer bin has a predetermined height and is higher than the height of the discharge port.

11. The shaft-style crushing and filling system of claim 8, wherein, The crushing device comprises a toothed roll crusher and / or a smooth roll crusher, and the wet mill is a ball mill or a rod mill.

12. The shaft-style crushing and packing system of claim 8, wherein, The plurality of crushing devices comprises a first-stage crushing device and a second-stage crushing device, wherein the second-stage crushing device is a penultimate-stage crushing device; the multi-layer frame structure comprises at least a first layer, a second layer and a third layer arranged in sequence from bottom to top, the first-stage crushing device is arranged on the third layer, and the second-stage crushing device is arranged on the second layer or a fixed base on the ground, and the wet mill is arranged on the first layer or on the ground outside the building.

13. The shatter-rolling system of claim 12, wherein, The first-stage crushing device and the second-stage crushing device are both toothed roll crushers, and the wet mill is a ball mill.

14. The shaft-style crushing and packing system of claim 1, wherein, The building comprises a multi-layer frame structure, and the crushing system further comprises a wet mill, a buffer bin and a lifting device, the wet mill is arranged in the building or on the ground outside the building, the crushing device is arranged on a floor of the building which is higher than the wet mill, the discharge port of the crushing device is connected with the inlet port of the wet mill through the lifting device and the buffer bin, and the discharge port of the wet mill is connected with the filling device through a buffer tank.

15. The shaft-style crushing and packing system of claim 1, wherein, The preset filling area comprises one or more of a goaf, an accident pool, a separation layer area and an abandoned roadway.

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