Dust removal device for building type crushing and filling system

Abstract

A dust removal device for a building type crushing and filling system comprises a spiral conveyor, a discharge valve, a dust collection pipeline, a dust remover and a dust removal fan, the dust removal fan is connected with an air outlet of the dust remover, one end of the dust collection pipeline is connected with an air inlet of the dust remover, and the other end of the dust collection pipeline is connected with a dust collection point; the dust removal device for the building type crushing and filling system further comprises a water content online detection device, and the water content online detection device is arranged on the finished product bin, the feeding belt conveyor and / or the filtering and impurity removing device. The water content on-line detection device for monitoring the water content of the gangue is arranged, so that the dust removal device can be controlled to start and stop, and the problem that the service life of the dust remover is shortened due to high water content of the gangue is solved.

Description

Technical Field

[0001] The utility model relates to a dust removal device for a floor - type crushing and filling system, in particular to a dust removal device for a floor - type crushing and filling system adopting a paste filling process, belonging to the technical field of gangue filling equipment manufacturing. Background Art

[0002] With the continuous exploitation of coal, the demand for gangue filling treatment in China has been increasing year by year. At present, paste filling is often used for gangue filling.

[0003] In the prior art, gangue treatment devices are constructed by using the method of flat - laying ground infrastructure. After the gangue is crushed to a certain particle size, it is mixed and stirred with mixed additives (such as water, fly ash, cement, etc.), and then transported to the underground filling area (goaf, caving area, separation zone, accident pool, etc.). In addition to the above, there are also gangue treatment devices constructed in the form of a combination of multiple towers.

[0004] Since the gangue needs to be washed in the coal preparation plant before crushing and cannot be fully dried in the sun, if the moisture content of the gangue is relatively high, the dust is easily adsorbed on the surface of the filter bag or filter cartridge during filtration, resulting in incomplete dust cleaning, forming caking, reducing the filtration efficiency, increasing the replacement of vulnerable parts, and increasing the operation cost of the equipment. In addition, the existing dust removal device of the tower is connected to the finished product bin, and after the dust collector is cleaned, the dust directly falls into the finished product bin, resulting in uneven mixing of the materials in the finished product bin and affecting the mixing effect of the paste. Summary of the Invention

[0005] The technical problem to be solved by the utility model is to provide a dust removal device for a floor - type crushing and filling system in view of the deficiencies of the prior art. The dust removal device is separated from the finished product bin, reducing the overall height of the tower, solving the problems that the dust directly falls into the finished product bin after the dust collector is cleaned, the dust raising during falling is large, and the finished product material and the dust are unevenly mixed, and realizing the effect of uniform material falling.

[0006] The technical problem to be solved by the utility model is realized through the following technical solutions:

[0007] A dust removal device for a floor - type crushing and filling system, the dust removal device for the floor - type crushing and filling system includes a screw conveyor, a discharge valve, a dust collection pipeline, a dust collector and a dust removal fan. The dust removal fan is connected to the air outlet of the dust collector. One end of the dust collection pipeline is connected to the air inlet of the dust collector, and the other end is connected to a dust collection point;

[0008] The dust removal device for the floor - type crushing and filling system further includes a moisture content on - line detection device, and the moisture content on - line detection device is arranged at the finished product bin, the feeding belt conveyor and / or the filtering and impurity - removing device.

[0009] In order to convey the undersize material and the powder to the finished product bin together, the discharge port of the screw conveyor is connected to the feeding port of the fourth belt conveyor, and the discharge port of the fourth belt conveyor is connected to the feeding port of the finished product lifting device through a chute; the undersize material discharge port of the screening device of the dust removal device for the building type crushing and filling system is connected to the feeding port of the fourth belt conveyor.

[0010] In order to make the powder scatter evenly, the chute is a flat-mouth chute.

[0011] In order to mix the undersize material and the powder evenly, a plurality of guiding plates are arranged on the bottom surface of the flat-mouth chute.

[0012] In order to improve the dust collection effect and prevent the dust from spreading, a dust-proof cover is arranged at the dust collection point.

[0013] Preferably, the moisture content on-line detection device is a microwave moisture meter or a near-infrared moisture meter.

[0014] Preferably, the dust removal device for the building type crushing and filling system includes a dust on-line detection device, and the dust on-line detection device is installed in the dust collection point.

[0015] In order to prevent the powder from directly falling into the finished product bin after the dust collector is cleaned, the dust removal device for the building type crushing and filling system is placed on the ground or installed on the steel structure building of the building type crushing and filling system.

[0016] In summary, by separating the dust removal device from the finished product bin, the overall height of the tower is reduced, and the problems that the powder directly falls into the finished product bin after the dust collector is cleaned, the dust generated during falling is large, and the finished product material and the powder are not evenly mixed are solved, and the effect of uniform material falling is achieved; the moisture content on-line detection device for monitoring the moisture content of the gangue and the dust on-line detection device for detecting the dust concentration help to control the start and stop of the dust removal device and the rotation speed of the dust removal fan, thereby improving the dust removal efficiency of the dust collector, solving the problem that the high moisture content of the gangue reduces the service life of the dust collector, and at the same time, the amount of dust sucked away by the dust collector from the powder can be controlled, and the powder content in the finished product material can be increased.

[0017] The following combines the drawings and specific embodiments to detail the technical solutions of the present invention. Brief Description of the Drawings

[0018] Figure 1 It is a structural block diagram of the building type crushing and filling system of the present invention;

[0019] Figure 2 It is a front view schematic diagram of the building type crushing and filling system of the present invention;

[0020] Figure 3 It is a top view schematic diagram of the building type crushing and filling system of the present invention;

[0021] Figure 4 It is a left view schematic diagram of the building type crushing and filling system of the present utility model;

[0022] Figure 5 It is a right view schematic diagram of the building type crushing and filling system of the present utility model;

[0023] Figure 6 It is a front view schematic diagram of the shunt chute of the present utility model;

[0024] Figure 7 It is a side view schematic diagram of the shunt chute of the present utility model;

[0025] Figure 8 It is a side view schematic diagram of the flat mouth chute of the present utility model;

[0026] Figure 9 It is an A - A sectional view of the flat mouth chute of the present utility model. Detailed implementation manners

[0027] Figure 1 It is a structural block diagram of the building type crushing and filling system of the present utility model; Figure 2 It is a front view schematic diagram of the building type crushing and filling system of the present utility model; Figure 3 It is a top view schematic diagram of the building type crushing and filling system of the present utility model; Figure 4 It is a left view schematic diagram of the building type crushing and filling system of the present utility model; Figure 5 It is a right view schematic diagram of the building type crushing and filling system of the present utility model. As Figures 1 to 5 shown, the present utility model provides a building type crushing and filling system for crushing materials (raw materials) such as coal gangue, tailings, and construction waste into a particle size suitable for filling the underground filling area 630 and performing filling.

[0028] The building type crushing and filling system includes a steel structure building 900, and a crushing device, a screening device 400, a finished product bin 500, and a filling device are arranged in the steel structure building 900. The crushing device is configured to crush materials of a large particle size level into materials of a predetermined particle size level, so that the crushed materials are suitable for filling the underground filling area 630. The screening device 400 is configured to screen the crushed materials and convey the crushed materials according to the particle size of the crushed materials. The finished product bin 500 is configured to receive the materials with the predetermined particle size. The filling device is configured to mix the materials from the finished product bin with a mixed additive and then convey them to the underground filling area.

[0029] Exemplarily, the crushing device includes a primary crushing device 110 and two secondary crushing devices 120, and the number of the screening devices 400 is two.

[0030] The overall building of the utility model is constructed with a steel structure, eliminating the need for cement concrete construction. It has a simple structure, a short construction period, and can be flexibly disassembled. All equipment is centrally installed in one building, occupying less floor area. The steel structure building 900 can refer to existing technologies such as the building of a sand making building, which will not be elaborated here.

[0031] The building type crushing and filling system of the utility model further includes a conveying device for conveying materials. At different conveying stages of the materials, the conveying device can be in various forms. For example, the utility model can use a lifting device, a belt conveyor, a screw conveyor, a chute (a chute is a structure that directly connects the discharge port of one device to the feed port of another device, mainly used as a channel for gravity feeding), and other devices for conveying materials in the prior art as the conveying device. For the transportation of materials in the horizontal direction or approximately horizontal direction (the angle with the horizontal direction is less than or equal to 20°), the utility model preferably uses a belt conveyor because belt conveying is more reliable, easy to maintain, and has lower costs. For the transportation of materials in the vertical direction or approximately vertical direction, the utility model preferably uses a lifting device because the lifting device can continuously convey vertically, saving the plane space size. The lifting device can be a hoist, a bucket elevator, a screw conveyor, etc. The utility model preferably uses a hoist as the lifting device because the hoist can effectively save the size in the plane space. The utility model collectively refers to the devices used for material conveying as the conveying device. In addition, during the process of conveying materials, a combination of various forms of conveying devices can also be used. For example, a lifting device and a belt conveyor can be used together to convey materials.

[0032] It should be added that unless otherwise specified, the utility model does not limit the types of conveying devices. For example, although the belt conveyor is used as an example for the transportation of materials in the horizontal direction or approximately horizontal direction in the following text, the belt conveyor can also be replaced by other applicable conveying devices in the prior art.

[0033] In the existing gangue filling technology, the material conveying equipment mainly uses a belt conveyor for conveying, that is, the belt conveyor is connected to the discharge of the crusher and sent to the feed port of the screening machine. Due to the inclination limit of the belt conveyor, when the inclination is too large, the materials are likely to roll down. In order to meet the feeding requirements, the length of the belt conveyor is very long, and the overall equipment occupies a large floor area. The utility model uses a lifting device as one of the conveying devices, which can directly lift the materials to a certain height, reducing the layout of the belt conveyor and occupying less overall floor area.

[0034] During the process of material crushing, since it is difficult to crush all the materials to the required particle size in one go, in this utility model, a primary crushing device 110 and a secondary crushing device 120 are provided to jointly crush the materials. The crushing device can be a jaw crusher, a gyratory crusher, a cone crusher, a roll crusher, a hammer crusher, a counterattack crusher, etc. Preferably, a counterattack crusher is used because it has a large crushing ratio, enabling some materials to be directly crushed to the target particle size or close to the target particle size, reducing the operating pressure of the next-stage crushing.

[0035] The screening device 400 is configured to screen the crushed materials and convey the crushed materials according to the particle size of the crushed materials. For example, the crushed materials are conveyed to the secondary crushing device 120 or the finished product bin 500. More specifically, if the crushed materials already meet the requirements for filling the underground filling area 630, then the crushed materials are conveyed to the finished product bin 500; if the crushed materials do not yet meet the requirements for filling the underground filling area 630, then the crushed materials are conveyed to the secondary crushing device 120. This utility model does not limit the specific size of the particle size of the crushed materials, and those of ordinary skill in the art can make design choices according to actual situations.

[0036] The screening device 400 can be a relaxation screen, an air screen, a cylindrical screen, a single-stage vibrating screen, a multi-stage vibrating screen, a roller screen, etc. Preferably, the screening device 400 is a relaxation screen, and the screen mesh is made of rubber. During operation, the screen mesh alternately tightens and relaxes, and the screen holes continuously deform, increasing the vibration degree of the screen surface, preventing materials from adhering to the screen mesh and blocking the screen holes.

[0037] The primary crushing device 110, the secondary crushing device 120, and the screening device 400 are respectively arranged on their respective independent installation platforms 910, and the independent installation platforms 910 are independent of the steel structure building 900. In other words, the installation and setting of the independent installation platforms 910 are not mutually dependent on the steel structure building 900. Except for passages for passage, etc., the independent installation platforms 910 are not connected to the steel structure building 900. Further, the multiple independent installation platforms 910 are independent of each other and not connected. The independent installation platforms 910 effectively prevent the equipment such as the primary crushing device 110, the secondary crushing device 120, and the screening device 400 from driving the steel structure building 900 to vibrate, also avoid the influence of vibration on other equipment on the steel structure building 900, and at the same time reduce the load on the steel structure building 900, extending the service life of the building-type crushing and filling system.

[0038] The independent installation platform 910 can be a steel structure platform in the prior art, which is used for supporting the primary crushing device 110, the secondary crushing device 120, and the screening device 400. Exemplarily, the main body of the independent installation platform 910 can be composed of an installation plane and a support frame, and each independent installation platform 910 is installed on the ground. More specifically, the support frame is installed on the ground, and an installation plane is provided thereon, and the primary crushing device 110, the secondary crushing device 120, the screening device 400, etc. are installed on the installation plane.

[0039] The primary crushing device 110 is located inside the steel structure building 900 and is indirectly arranged on the ground through the independent installation platform 910. The feeding system of the primary crushing device 110 is arranged outside the steel structure building 900. In order to match various working environments, the present invention does not limit the structure and type of the feeding system.

[0040] For example, the feeding belt conveyor 810 of the feeding system can be directly connected to the coal washing plant, and the coal gangue washed out by the coal washing plant can be directly conveyed into the primary crushing device 110 through the feeding belt conveyor 810.

[0041] Alternatively, the feeding system can use a gangue bin / tank for feeding. At this time, the feeding belt conveyor 810 is installed inside the gangue bin / tank, a feeder 820 is installed above the feeding belt conveyor 810, and a filtering and impurity removing device 830 can be optionally built above the feeder 820. The filtering and impurity removing device 830 filters out impurities and large particle materials, etc., and after filtering, it falls into the feeder 820, and the feeder 820 conveys the materials to the feeding belt conveyor 810 for feeding. It should be noted that the feeding belt conveyor 810 is selected as the conveying device here because generally the feeding is for long-distance feeding, and the feeding belt conveyor 810 has high versatility with customer equipment. Of course, the present invention is not limited thereto, and other types of conveying devices can also be selected.

[0042] In order to remove iron-containing materials in materials such as coal gangue, a magnetic separator 840 can be installed above the conveying devices at the inlet and outlet of the primary crushing device 110. For example, the magnetic separator is arranged above the feeding belt conveyor 810, and an independent dust removal device (dust removal point) can also be installed at the conveying device for fixed-point dust removal.

[0043] By using the feeding belt conveyor 810 to feed the primary crushing device 110, the flexibility is relatively high. Combined with the filtering and impurity removing device 830 used in the gangue bin / tank feeding, the influence of large particle materials on the primary crushing is effectively excluded through filtering, and the flexible application of the tower is realized.

[0044] For the convenience of the maintenance of the primary crushing device 110 and the replacement of vulnerable parts, a hoisting mechanism for maintenance is provided above the primary crushing device 110, and the hoisting mechanism for maintenance is installed on the steel structure building 900 through a hoisting bracket.

[0045] A first belt conveyor 210 is provided below the discharge port of the primary crushing device 110, and the discharge port of the primary crushing device 110 is connected to the feed inlet of the first belt conveyor 210. The first belt conveyor 210 can be installed above or below the ground according to the actual working conditions.

[0046] The discharge port of the first belt conveyor 210 is respectively connected to the feed inlets of two semi-finished product lifting devices 310 through a diversion chute 211. The two semi-finished product lifting devices 310 are symmetrically distributed on both sides of the first belt conveyor 210, and the feed inlets of the two semi-finished product lifting devices 310 all face the first belt conveyor 210.

[0047] Figure 6 It is the front view schematic diagram of the diversion chute of the present utility model; Figure 7 It is the side view schematic diagram of the diversion chute of the present utility model. The diversion chute 211 is designed with an automatically controlled switching system. Exemplarily, the diversion chute 211 includes a feed inlet 212 and a plurality of outlet pipelines 213 (in this embodiment, the outlet pipelines 213 are two). After the material enters the diversion chute from the feed inlet 212, it flows out through the plurality of outlet pipelines 213, and a stop valve 214 and a variable valve 215 are installed on each outlet pipeline 213; the stop valve 214 can select two control modes of automatic and manual control, which can fully open or fully close the outlet pipeline 213 and does not have the function of regulating the flow rate; the variable valve 215 is an automatically controlled valve, which can adopt various control methods such as electric and pneumatic, without manual intervention, and the on-off state can be precisely controlled. According to the needs, the flow rate of the material is adjusted to improve the production efficiency and achieve uniform material distribution. After the material enters the diversion chute 211 from the feed inlet 212 and enters each outlet pipeline 213, it first passes through the variable valve 215 and then through the stop valve 214, which can make the pipeline close more thoroughly and realize the automatic control of switching production capacity. In addition to the above, other types of diversion chutes 211 that can be automatically controlled in the prior art can also be used for the design. It should be added that the diversion chute 211 can be inclined or vertical.

[0048] Second belt conveyors 220 are respectively provided below the discharge ports of the two semi-finished product lifting devices 310, and the discharge ports of the semi-finished product lifting devices 310 are connected to the feed inlets of the second belt conveyors 220. Exemplarily, the second belt conveyor 220 is located on the top floor of the steel structure building 900.

[0049] The discharge ports of the two second belt conveyors 220 are respectively connected to the feeding ports of the two screening devices 400 through chutes, and the feeding ports of the two screening devices 400 are located directly below the discharge ports of the chutes. The two screening devices 400 are installed on independent installation platforms 910, and the independent installation platforms 910 of the two screening devices 400 are independent of each other.

[0050] In other words, the two screening devices 400, the two semi-finished product lifting devices 310, and the two second belt conveyors 220 are symmetrically distributed on both sides of the first belt conveyor 210, so that the materials conveyed by the first belt conveyor 210 can be screened by two sets of screening equipment respectively.

[0051] The two secondary crushing devices 120 are also symmetrically distributed on both sides of the first belt conveyor 210. The oversize discharge ports of the two screening devices 400 are respectively connected to the feeding ports of the two secondary crushing devices 120 through chutes, and the feeding ports of the two secondary crushing devices 120 are respectively located directly below the oversize discharge ports of the two screening devices 400. The oversize materials enter the secondary crushing devices 120 through the chutes.

[0052] The discharge ports of the two secondary crushing devices 120 are respectively connected to the feeding ports of the two third belt conveyors 230. The feeding ports of the two third belt conveyors 230 are respectively located directly below the discharge ports of the two secondary crushing devices 120. The discharge ports of the two third belt conveyors 230 are connected to the feeding port of the first belt conveyor 210 (the belt conveyors such as the first belt conveyor 210 can have multiple feeding ports), and the crushed oversize materials are conveyed to the screening device 400 again through the first belt conveyor 210 for subsequent processing.

[0053] In other words, the two secondary crushing devices 120 are also symmetrically distributed on both sides of the first belt conveyor 210, so that the oversize materials screened by the two sets of screening equipment can be crushed again by the two secondary crushing devices 120 respectively.

[0054] A fourth belt conveyor 240 is arranged directly below the undersize discharge ports of the two screening devices 400. The undersize discharge ports of the two screening devices 400 are connected to the feeding port of the fourth belt conveyor 240, and the undersize materials (finished products) directly fall onto the fourth belt conveyor 240.

[0055] More specifically, the feeding port of the fourth belt conveyor 240 is located directly below the discharge ports of the undersize materials of the two screening devices 400 and above the first belt conveyor 210. The discharge port of the fourth belt conveyor 240 is connected to the feeding port of the finished product lifting device 320 through a chute. The finished product lifting device 320 is located on the side of the screening device 400. The discharge port of the finished product lifting device 320 is connected to the feeding port of the fifth belt conveyor 250. The discharge port of the fifth belt conveyor 250 is connected to the feeding port of the two-way belt conveyor 260. The discharge ports at both ends of the two-way belt conveyor 260 are respectively connected to the feeding ports of the two finished product bins 500 through the diversion device 290, and the two-way belt conveyor 260 rotates forward and backward to convey materials to the two finished product bins 500.

[0056] The diversion device 290 includes a feeding port and multiple diversion pipelines. Each diversion pipeline is inserted into the interior of the finished product bin 500, and multiple discharge holes are provided in the part of the diversion pipeline inserted into the interior of the finished product bin 500.

[0057] During the process of the material (finished product material) falling into the finished product bin 500, after the larger particles of the material enter the finished product bin 500, they will segregate from the falling point to the surroundings, resulting in uneven distribution of the material in the bin and affecting the mixing effect. By setting the diversion device 290, the number of falling points can be increased, material segregation can be reduced, and the material in the bin can be made more uniform.

[0058] It should be noted that the present utility model does not limit the number and size of the finished product bins 500.

[0059] As can be seen from the above, the floor-type crushing and filling system of the present utility model adopts a process route of two-stage crushing and multiple screening and less crushing, achieving energy conservation and consumption reduction of the crushing device and the screening device 400, increasing the cost advantage of the material properties, and improving the finished product rate of gangue crushing and the proportion of powder materials.

[0060] In addition, the present utility model uses a double-lifting device (semi-finished product lifting device 310) for feeding. Each semi-finished product lifting device 310 corresponds to a screening device 400 and a secondary crushing device 120 respectively. Combined with the design of the diversion chute 211, any set of semi-finished product lifting device 310 - screening device 400 - secondary crushing device 120 can be operated, which not only provides a standby system during equipment maintenance, but also can switch equipment according to the requirements of the filling volume to adjust the system output, effectively reducing the equipment operation cost.

[0061] A weighing belt conveyor 280 for transporting materials in both directions is provided directly below the discharge port of the finished product bin 500. The discharge ports at both ends of the weighing belt conveyor 280 are respectively connected to the feeding ports of the two filling devices.

[0062] The filling device is configured to mix the materials from the finished product bin 500 with mixed additives (such as water, fly ash, cement, etc.) and transport the mixed materials to the underground filling area 630. Exemplarily, the number of the filling devices is two.

[0063] To avoid injecting inappropriate materials into the underground filling area 630 in case of a failure, the filling device can also transport the materials to an accident pool (such as a separated layer area, etc.).

[0064] The filling device includes a mixing device 610 and a pumping device 620. The inlet of the mixing device 610 is connected to the outlet of the weighing belt conveyor 280. The mixing device 610 is used to mix the measured materials from the finished product bin 500 with the mixed additives into a slurry and then transfer it to the pumping device 620 through a discharge manifold. The pumping device 620 is used to transport the mixed materials to the underground filling area 630.

[0065] The mixing device 610 can be a vertical mixing device or a horizontal mixing device (such as a single-shaft horizontal mixer, a double-shaft horizontal mixer, etc.). The pumping device 620 can be a piston pump, a slurry pump, a slush pump, a centrifugal pump or a vane pump, etc.

[0066] During operation, different filling devices can be replaced by adjusting the conveying direction of the weighing belt conveyor 280. For example, two filling devices can be used alternately.

[0067] The present utility model also provides a dust removal device for a building-type crushing and filling system (hereinafter referred to as the dust removal device), which can reduce dust pollution and improve the utilization rate of materials.

[0068] The dust removal device can be directly placed on the ground or installed on the steel structure building 900. To save space, the dust removal device is located on the side of the semi-finished product lifting device 310. The present utility model does not limit the structure and type of the dust collector 730 in the dust removal device. For example, the dust collector 730 of the dust removal device can be an electrostatic dust collector, a bag dust collector, a cyclone dust collector, a wet dust collector, a cartridge dust collector, etc.

[0069] The above dust collector 730 is prior art. For example, the dust collector 730 can include components such as a hopper, filter bags or filter cartridges, etc., and the present utility model will not elaborate further.

[0070] The dust removal device may include a screw conveyor 710, a discharge valve 720, a dust collection pipeline, a dust collector 730, a dust removal fan 740, etc. The dust removal fan 740 is connected to the air outlet of the dust collector 730. One end of the dust collection pipeline is connected to the air inlet of the dust collector 730, and the other end is connected to the dust collection point. The dust removal fan 740 drives the dust-containing gas at each dust collection point to enter the interior of the dust collector 730 through the dust collection pipeline. After the dust-containing gas is filtered by the dust collector 730, it enters the dust removal fan 740 through the air outlet of the dust collector 730 and is discharged from the exhaust port of the dust removal fan 740. The filtered powder falls into the ash hopper of the dust collector 730 after dust cleaning by the dust collector 730. The powder in the ash hopper is unloaded into the screw conveyor 710 through the discharge valve 720 (including but not limited to a star valve, etc.) at the discharge port of the dust collector 730. The powder is conveyed to the fourth belt conveyor 240 through the screw conveyor 710 (the discharge port of the screw conveyor is connected to the feed inlet of the fourth belt conveyor), and finally reaches the finished product bin 500. Here, a screw conveyor is selected to convey the dust material, which can ensure uniform material dropping without dust emission. Moreover, in the present utility model, the powder is not directly conveyed to the finished product bin 500, which can control the powder content of the material in the finished product bin 500 and avoid uneven powder content of the material in the finished product bin 500.

[0071] More specifically, since the feed inlet of the fourth belt conveyor 240 is directly below the discharge outlets of the screened materials of the two screening devices 400, after the powder is conveyed to the fourth belt conveyor 240 through the screw conveyor 710, there is not only powder but also screened materials on the fourth belt conveyor 240. Subsequently, since the discharge outlet of the fourth belt conveyor 240 is connected to the feed inlet of the finished product lifting device 320 through a chute, the fourth belt conveyor 240 conveys the powder and the screened materials together to the finished product lifting device 320. Since the discharge outlet of the finished product lifting device 320 is connected to the feed inlet of the fifth belt conveyor 250, the discharge outlet of the fifth belt conveyor 250 is connected to the feed inlet of the two-way belt conveyor 260, and the discharge outlets at both ends of the two-way belt conveyor 260 are respectively connected to the feed inlets of the two finished product bins 500 through the diversion device 290, the powder and the screened materials finally enter the finished product bins 500 after passing through the fifth belt conveyor 250, the two-way belt conveyor 260, and the diversion device 290 in sequence.

[0072] The present utility model does not limit the setting position of the dust collection points. Those skilled in the art can design and select according to needs. For example, the dust collection points can be set at the feed inlets and discharge outlets (material dropping points) of the primary crushing device 110 and the secondary crushing device 120, near the screening device 400 (material dropping points), and at the material dropping points where each conveying device is connected. Figure 1 The circular shape schematically shows the setting positions of the dust collection points. It should be noted that the dust collection points should be spaced a certain distance from the material dropping points to avoid collecting the finished product materials as well.

[0073] To improve the dust collection effect and prevent the diffusion of smoke and dust, a dust-proof cover (not shown in the figure) is provided at the dust collection point. The dust-proof cover can enclose the equipment at the dust collection point to prevent the smoke and dust from spreading everywhere, causing pollution, and improving the dust collection effect of the dust removal device.

[0074] To reduce the impact caused by the agglomeration of dust with a higher moisture content, the dust removal device further includes an on-line moisture content detection device. The on-line moisture content detection device is, for example, a microwave moisture meter or a near-infrared moisture meter, etc. The on-line moisture content detection device can be selectively arranged at the finished product bin 500, the feeding belt conveyor 810, and / or the filtering and impurity removing device 830, etc.

[0075] When the on-line moisture content detection device detects that the moisture content of the gangue exceeds the specified range, the control system of the floor-type crushing and filling system automatically stops the dust removal device, or the operator manually stops the dust removal device.

[0076] The dust removal device may further include a dust on-line detection device, and the dust on-line detection device can be installed in the dust collection point. The dust on-line detection device can detect the dust concentration at the dust collection point (or the material dropping point). When the dust on-line detection device detects that the dust concentration at a certain dust collection point is lower than a specific value, the pipeline cut-off valve in the dust collection pipeline closes, and dust collection is not carried out at this dust collection point. When the dust on-line detection device detects that the dust concentration at a certain dust collection point is higher than a specific value, the pipeline cut-off valve in the dust collection pipeline opens, and dust collection is carried out at this dust collection point.

[0077] In addition, the control system of the floor-type crushing and filling system can also adjust the rotation speed of the dust removal fan according to the dust concentration range, thereby changing the speed of the dust-containing gas passing through the dust collector.

[0078] When the dust concentration at the dust collection point changes, the rotation speed of the dust removal fan of the dust collector is automatically adjusted according to the pre-set concentration range, changing the speed of the dust-containing gas passing through the dust collector, and further increasing or decreasing the filtering air volume of the dust collector to ensure the filtering effect of the dust collector.

[0079] The present utility model is not limited thereto. The pipeline cut-off valve in the dust collection pipeline and the rotation speed of the dust removal fan can also be manually operated by the operator.

[0080] Figure 8 It is a side view schematic diagram of the flat-mouth chute of the present utility model; Figure 9 It is an A-A sectional view of the flat-mouth chute of the present utility model. As Figure 8 and Figure 9As shown, in order to mix the undersize material and the powder evenly, the dust removal device further includes a flat-mouth chute 750. The flat-mouth chute 750 is preferably arranged at the discharge port of the finished product lifting device 320, that is, the discharge port of the finished product lifting device 320 is communicated with the feeding port of the fifth belt conveyor 250 through the flat-mouth chute 750. The height of the discharge port of the flat-mouth chute 750 is less than the width of the discharge port.

[0081] A multi-stage guide plate 751 is arranged on the bottom surface of the flat-mouth chute 750. The multi-stage guide plate 751 can change the conveying direction of the undersize material and the powder, so that the undersize material and the powder are evenly mixed by the multi-stage guide plate 751 when passing through the flat-mouth chute 750 under the action of gravity.

[0082] With the above structure, the dust removal device is separated from the finished product bin 500, reducing the overall height of the tower. It solves the problems that after the dust collector is cleaned, the powder directly falls into the finished product bin, resulting in large dust during falling and uneven mixing of the finished product and the powder, and achieves the effect of uniform material falling. The moisture content on-line detection device for monitoring the moisture content of gangue and the dust on-line detection device for detecting the dust concentration help to control the start and stop of the dust removal device and the rotation speed of the dust removal fan, thereby improving the dust removal efficiency of the dust collector, solving the problem that the high moisture content of gangue reduces the service life of the dust collector, and at the same time, it can control the amount of dust sucked away by the dust collector for the powder, increasing the powder content in the finished product.

[0083] For the convenience of equipment maintenance or debugging, etc., the steel structure building 900 includes a floor slab, a staircase or an elevator for personnel to pass through. In order to save space, when a staircase is adopted, the staircase is arranged around the semi-finished product lifting device 310. Personnel can reach different positions of the steel structure building 900 and the maintenance points of each component in the building type crushing and filling system (such as the maintenance points of the lifting device) through the floor slab, the staircase or the elevator.

[0084] In order to save costs, the upper surface of the finished product bin 500 is a part of the top floor of the steel structure building 900. Of course, the present invention is not limited thereto, and the number of floors and the height of the steel structure building 900 can also be changed. For example, additional floors can also be arranged above the finished product bin 500, and the emergency water tank 510, etc. can be arranged above the finished product bin 500. The emergency water tank 510 can be used for the maintenance of the material conveying device in the finished product bin 500.

[0085] The working process of the building type crushing and filling system of the present invention will be introduced below with specific examples.

[0086] The primary crushing device 110 uses a belt conveyor for feeding. Gangue, raw stones, etc. are conveyed to the feeding port of the primary crushing device 110 through the feeding belt conveyor 810. After being crushed, they fall onto the first belt conveyor 210. After being divided by the diversion chute 211, they respectively fall into two semi-finished product lifting devices 310. The two semi-finished product lifting devices 310 lift the materials to the feeding height of the screening device 400 and respectively throw the materials onto the two second belt conveyors 220 of the screening device 400. The two second belt conveyors 220 respectively convey the materials into the chute at the feeding port of the screening device 400 so that the materials enter the screening device 400; the oversize materials of the two screening devices 400 respectively flow into the two secondary crushing devices 120 through the chute. After being crushed for the second time, the materials are conveyed to the first belt conveyor 210 by the third belt conveyor 230 for re-screening; the undersize materials of the two screening devices 400 enter the fourth belt conveyor 240 and are conveyed to the feeding port of the finished product lifting device 320. The finished product lifting device 320 lifts the materials to the feeding height of the diversion device 290. The materials enter the two-way belt conveyor 260 after passing through the fifth belt conveyor 250. The two-way belt conveyor 260 sends the materials into the diversion device 290, and they flow into the finished product bin 500.

[0087] During this process, the dust removal fan 740 of the dust removal device drives the dust generated during the crushing and screening processes. After being filtered by the dust collector 730, the dust is concentrated in the ash hopper of the dust collector 730. The dust in the ash hopper is controlled to fall into the screw conveyor 710 through the discharge valve 720. The screw conveyor 710 conveys the powder materials into the fourth belt conveyor 240 and finally sends them to the finished product bin 500. The materials fall onto the weighing belt conveyor 280 for two-way material transportation and enter the feeding ports of the two filling devices from the discharge ports at both ends of the weighing belt conveyor 280 for filling.

[0088] In addition to providing a dust removal device for a building-type crushing and filling system, the present utility model also provides a building-type crushing and filling system. The building-type crushing and filling system includes a steel structure building body. A crushing device, a screening device, a finished product bin, and a filling device are arranged in the steel structure building body; the crushing device and the screening device are respectively arranged on their respective independent installation platforms.

[0089] In order to prevent equipment such as the primary crushing device, the secondary crushing device, and the screening device from driving the steel structure building body to vibrate, avoid the influence of vibration on other equipment on the steel structure building body, and at the same time reduce the load of the steel structure building body, the independent installation platform includes an installation plane and a support frame, and the independent installation platform is installed on the ground.

[0090] In order to match various working environments, filter out impurities and large - particle materials, and remove iron - containing materials in materials such as coal gangue, the feeding system of the building - type crushing and filling system includes a feeding belt conveyor, a feeder, a filtering and impurity - removing device, and a magnetic separator. The filtering and impurity - removing device is arranged above the feeder, and the magnetic separator is arranged above the feeding belt conveyor.

[0091] In order to achieve maintenance without stopping work and meet the requirements of continuous operation, the crushing device includes a primary crushing device and two secondary crushing devices. The number of screening devices is two, and the number of filling devices is two.

[0092] In order to enable the crushed materials to enter different screening devices, a first belt conveyor is arranged below the discharge port of the primary crushing device, and the discharge port of the primary crushing device is connected to the feeding port of the first belt conveyor. The discharge port of the first belt conveyor is respectively connected to the feeding ports of two semi - finished product lifting devices through a diversion chute. The two semi - finished product lifting devices are symmetrically distributed on both sides of the first belt conveyor, and the feeding ports of the two semi - finished product lifting devices are all facing the first belt conveyor. Second belt conveyors are respectively arranged below the discharge ports of the two semi - finished product lifting devices, and the discharge ports of the semi - finished product lifting devices are connected to the feeding ports of the second belt conveyors. The discharge ports of the two second belt conveyors are respectively connected to the feeding ports of the two screening devices through chutes, and the feeding ports of the two screening devices are located directly below the discharge ports of the chutes. More specifically, the diversion chute includes a feeding port and multiple outlet pipelines, and a stop valve and a variable valve are installed on each outlet pipeline.

[0093] In order to enable the crushed materials to enter different secondary crushing devices, the over - size material discharge ports of the two screening devices are respectively connected to the feeding ports of the two secondary crushing devices through chutes, and the feeding ports of the two secondary crushing devices are respectively located directly below the over - size material discharge ports of the two screening devices. A fourth belt conveyor is arranged directly below the under - size material discharge ports of the two screening devices, and the under - size material discharge ports of the two screening devices are connected to the feeding ports of the fourth belt conveyor.

[0094] In order to enable the materials crushed by the secondary crushing devices to enter the screening devices again, the discharge ports of the two secondary crushing devices are respectively connected to the feeding ports of the two third belt conveyors, and the feeding ports of the two third belt conveyors are respectively located directly below the discharge ports of the two secondary crushing devices. The discharge ports of the two third belt conveyors are connected to the feeding port of the first belt conveyor.

[0095] In order to make more reasonable use of space, the two screening devices, the two second belt conveyors, and the two secondary crushing devices are all symmetrically distributed on both sides of the first belt conveyor.

[0096] To convey materials to the finished product bin, the discharge port of the fourth belt conveyor is connected to the inlet of the finished product lifting device through a chute. The finished product lifting device is located on the side of the screening device. The discharge port of the finished product lifting device is connected to the inlet of the fifth belt conveyor. The discharge port of the fifth belt conveyor is connected to the inlet of the bidirectional belt conveyor. The discharge ports at both ends of the bidirectional belt conveyor are respectively connected to the inlet of the finished product bin through a diversion device.

[0097] To avoid uneven distribution of materials in the bin and affect the mixing effect, the diversion device includes an inlet and multiple diversion pipelines. The multiple diversion pipelines are respectively inserted into the interior of the finished product bin. The part of the diversion pipeline inserted into the interior of the finished product bin is provided with multiple discharge holes.

[0098] To convey materials to the filling device, a weighing belt conveyor for transporting materials bidirectionally is arranged directly below the discharge port of the finished product bin. The discharge ports at both ends of the weighing belt conveyor are respectively connected to the inlets of two filling devices. The filling device includes a mixing device and a pumping device.

[0099] To reduce dust pollution and improve the utilization rate of materials, the building - type crushing and filling system further includes a dust removal device. The dust removal device includes a screw conveyor, a discharge valve, a dust collection pipeline, a dust collector, and a dust removal fan. The dust removal fan is connected to the air outlet of the dust collector. One end of the dust collection pipeline is connected to the air inlet of the dust collector, and the other end is connected to the dust collection point.

[0100] To prevent uneven powder content of materials in the finished product bin, the discharge port of the screw conveyor is connected to the inlet of the fourth belt conveyor.

[0101] In summary, in the present utility model, a variety of devices are arranged in a steel - structure building, and a lifting device is used to convey materials. The devices are highly integrated and occupy less floor area, and the infrastructure and operation costs are lower. By arranging the crushing device and the screening device on an independent installation platform, it is possible to avoid driving the steel - structure building to vibrate, and also avoid the influence of vibration on other devices on the steel - structure building. At the same time, the load on the steel - structure building is reduced, and the service life of the building - type crushing and filling system is extended. By adopting a two - stage crushing and a process route of more screening and less crushing, energy conservation and consumption reduction of the crushing device and the screening device are achieved, the cost advantage of the material property is increased, and the finished product rate of gangue crushing and the proportion of powder are improved.

[0102] List of reference numerals

[0103] 110 Primary crushing device

[0104] 120 Secondary crushing device

[0105] 210 First belt conveyor

[0106] 211 Shunt chute

[0107] 212 Feed inlet

[0108] 213 Outlet pipeline

[0109] 214 Stop valve

[0110] 215 Variable valve

[0111] 220 Second belt conveyor

[0112] 230 Third belt conveyor

[0113] 240 Fourth belt conveyor

[0114] 250 Fifth belt conveyor

[0115] 260 Two-way belt conveyor

[0116] 280 Weighing belt conveyor

[0117] 290 Shunt device

[0118] 310 Semi-finished product lifting device

[0119] 320 Finished product lifting device

[0120] 400 Screening device

[0121] 500 Finished product bin

[0122] 510 Emergency water tank

[0123] 610 Mixing device

[0124] 620 Pumping device

[0125] 630 Underground filling area

[0126] 710 Screw conveyor

[0127] 720 Discharge valve

[0128] 730 Dust collector

[0129] 740 Dust removal fan

[0130] 750 Flat chute

[0131] 751 Multi-stage guide plate

[0132] 810 Loading belt conveyor

[0133] 820 Feeder

[0134] 830 Filtering and impurity removal device

[0135] 840 Iron remover

[0136] 900 steel structure building

[0137] 910 independent installation platform

Claims

1. A dust removal device for a building type crushing and filling system, characterized in that: The dust removal device for the building-type crushing and filling system comprises a screw conveyor (710), a discharge valve (720), a dust collection pipeline, a dust collector (730) and a dust removal fan (740), wherein the dust removal fan (740) is connected to the air outlet of the dust collector (730), one end of the dust collection pipeline is connected to the air inlet of the dust collector (730), and the other end is connected to a dust collection point; The dust removal device for the tower-type crushing and filling system also includes an online moisture content detection device, which is arranged at the finished product bin (500), the feeding belt conveyor (810) and / or the filtering and impurity removal device (830).

2. The dust removal device for the tower type crushing and filling system according to claim 1, characterized in that: The discharge port of the screw conveyor (710) is connected to the feed port of the fourth belt conveyor (240), and the discharge port of the fourth belt conveyor (240) is connected to the feed port of the finished product lifting device (320) through a chute; the discharge port of the under-screen material of the screening device (400) of the dust removal device of the building-type crushing and filling system is connected to the feed port of the fourth belt conveyor (240).

3. The dust removal device for the tower type crushing and filling system according to claim 2, characterized in that: The chute is a flat-mouth chute (750).

4. The dust removal device for the tower type crushing and filling system according to claim 3, characterized in that: A multi-stage guide plate (751) is arranged on the bottom surface of the flat-mouth chute (750).

5. The dust removal device for the tower type crushing and filling system according to claim 1, characterized in that: A dust cover is arranged at the dust collecting point.

6. The dust removal device for the tower type crushing and filling system according to claim 1, characterized in that: The moisture content online detection device is a microwave moisture meter or a near infrared moisture meter.

7. The dust removal device for the tower type crushing and filling system according to claim 1, characterized in that: The dust removal device for the building-type crushing and filling system comprises an online dust detection device, and the online dust detection device is installed in the dust collecting point.

8. The dust removal device for a tower-type crushing and filling system according to claim 1, characterized in that: The dust removal device of the building type crushing and filling system is placed on the ground, or installed on the steel structure building (900) of the building type crushing and filling system.

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