Construction waste crushing device

Abstract

The application discloses a kind of construction waste crushing device, mainly solve the technical problem of serious pollution surrounding working environment when the existing construction waste crusher carries out crushing operation.The device includes base, fixed to the base and top is provided with the feed inlet of crusher, be provided with the spiral feeding slide of the upper portion of the crusher and with the feed inlet of the crusher is communicated, the cyclone dust collector corresponding with the cavity of the spiral feeding slide corresponding communication of air inlet pipe;The height of the dust hopper of the cyclone dust collector is higher than the discharge outlet height of the crusher, and the dust hopper and the discharge outlet are provided with dust discharging groove.The crushing device of the present application can effectively inhibit the dust generated during the crushing operation, and improve the working environment of the crushing operation.

Description

Technical Field

[0001] This application relates to the field of construction waste recycling and processing technology, specifically to a construction waste crushing device. Background Technology

[0002] Construction waste is solid waste generated during urban construction and renovation, mainly including concrete blocks, bricks and tiles, wood, steel, glass, asphalt, gypsum board, sand and gravel, and decoration waste. With the acceleration of urbanization, the output of construction waste has increased dramatically. Improper handling will occupy land resources, pollute the environment, and waste resources. Inert construction waste, such as concrete and bricks and tiles, accounts for 60% to 80% of the total construction waste and can be recycled into recycled aggregates. For example, recycled concrete aggregates can replace natural sand and gravel for road base courses and non-load-bearing structural concrete, achieving a strength up to C30 standard; recycled brick and tile aggregates can be used to produce permeable bricks, blocks, and roadbed materials, with low water absorption and good durability.

[0003] Crushing is the core step in the resource recovery of construction waste. Through processes such as crushing, screening, and sorting, waste is transformed into recyclable resources. In the crushing process, crushers or mobile crushing stations are generally used for primary crushing to break large pieces of concrete or bricks into particles with a diameter of 100-300mm. Then, secondary or even tertiary crushing and other crushing processes are carried out to ensure that the crushed products meet the particle size requirements for recycled aggregates.

[0004] However, in the process of implementing the technical solution in the embodiments of this application, the inventors of this application discovered that when existing crushers are performing crushing operations, a large amount of dust will appear at the feed inlet of the crusher as construction waste such as concrete blocks is squeezed and ground. The feed inlet of the existing crusher is directly exposed, and the dust is directly dispersed into the surrounding environment, seriously polluting the surrounding working environment.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the background technology of this disclosure and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0006] In view of at least one of the above technical problems, this disclosure provides a construction waste crushing device, which mainly solves the technical problem that existing construction waste crushers generate a lot of dust and seriously pollute the surrounding working environment during crushing operations.

[0007] According to one aspect of this disclosure, a construction waste crushing device is provided, comprising a base, a crusher fixed to the base and having a feed inlet at the top, a spiral feed chute disposed above the crusher and connected to the feed inlet of the crusher, and a cyclone dust collector with an air inlet pipe corresponding to and connected to the cavity of the spiral feed chute; the ash hopper of the cyclone dust collector is higher than the discharge port of the crusher, and an ash discharge trough is provided between the ash hopper and the discharge port of the crusher.

[0008] In some embodiments of this disclosure, the spiral feed chute has at least 0.25 spiral turns.

[0009] In some embodiments of this disclosure, the construction waste crushing device further includes a slide support fixed to the base for supporting the spiral feed slide.

[0010] In some embodiments of this disclosure, the spiral feed chute is connected to the feed inlet of the crusher via a connecting pipe, and an operation window is provided at the connecting pipe. A door for closing the operation window is hinged to the operation window.

[0011] In some embodiments of this disclosure, the corresponding cross-section of the connecting pipe is trapezoidal.

[0012] In some embodiments of this disclosure, the air inlet pipe of the cyclone dust collector is connected to the wall of the crusher feed inlet or the spiral feed chute inlet.

[0013] In some embodiments of this disclosure, the air inlet pipe of the cyclone dust collector is connected to the feed inlet of the crusher via a T-joint; the other end of the T-joint is connected to the inlet wall of the spiral feed chute.

[0014] In some embodiments of this disclosure, the air inlet pipe of the cyclone dust collector is connected to the feed inlet of the crusher via a four-way connector; the other ports of the four-way connector are respectively connected to the inlet wall of the spiral feed chute and the outlet wall of the crusher.

[0015] In some embodiments of this disclosure, the inlet of the spiral feed chute is provided with a plurality of atomizing nozzles that are connected to a water pump via pipelines; the atomizing nozzles are at an angle of not less than 20 degrees to the vertical direction and face the cavity of the spiral feed chute.

[0016] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0017] 1. The spiral structure design of the spiral feed chute ensures that most of the dust generated during crushing is confined within the cavity of the spiral feed chute, effectively reducing dust pollution to the surrounding environment. At the same time, the spiral feed chute can also serve as a buffer cavity, allowing a certain amount of construction waste to be fed at one time during crushing operations, thereby reducing the frequency of material feeding and reducing workload.

[0018] 2. The spiral feed chute is connected to the feed inlet of the crusher through a connecting pipe. On the one hand, the feed inlet of the crusher can be sealed by the connecting pipe and the spiral feed chute, which limits the range of dust dispersion and avoids the splashing of slag and stone during the crushing process, thus providing a safety protection effect. On the other hand, the connecting pipe is hinged with an openable window, which can be used for the inspection and maintenance of the crushing structure of the crusher, and can also facilitate the timely handling of problems such as slag and stone blockage.

[0019] 3. The cyclone dust collector can collect dust that has not settled in time in the spiral feed chute cavity, reducing the possibility of dust escaping into the surrounding air and improving the dust suppression effect of the device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a construction waste crushing device in one embodiment of this application.

[0021] In the above figures, 1 is the base, 2 is the crusher, 3 is the spiral feed chute, 31 is the chute support, 32 is the connecting pipe, 321 is the window / door, 4 is the cyclone dust collector, 41 is the suction pipe, and 42 is the ash hopper. Detailed Implementation

[0022] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "vertical," "horizontal," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "connection" and "linkage" in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0023] Unless otherwise specified, all devices and other components involved in the following embodiments are commercially available products.

[0024] To better understand the technical solution of this application, the above technical solution will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] To address the technical problem of severe dust generation and environmental pollution caused by existing crushers during construction waste crushing, this example discloses a construction waste crushing device, see [link to relevant documentation]. Figure 1 It includes a base 1, a crusher 2, a spiral feed chute 3, and a cyclone dust collector 4.

[0026] Specifically, the base 1 serves as a support platform, and the remaining components of the crushing device are correspondingly installed on the base 1. In this example, the base 1 is fixedly set on the ground. In some embodiments, in order to improve the flexibility of the construction waste crushing device, wheels or tracked wheels are installed on both sides of the base 1 to enable the crushing device to move its working position as needed.

[0027] See Figure 1 The crusher 2, as the core component of the construction waste crushing device, is fixedly installed on one side of the base 1. In this example, the crusher 2 is specifically a double-roll crusher; in some other embodiments, a jaw crusher is used. However, whether it is a double-roll crusher, a jaw crusher, or other types of crushers, when crushing inert waste such as concrete blocks or bricks, the high-speed operation and vibration of the grinding structure will cause the crushed construction waste to generate serious dust. Moreover, the feed inlets of existing crushers are all open, causing the dust generated during crushing to escape into the surrounding environment, seriously affecting the working environment for construction waste treatment and recycling. Therefore, see... Figure 1 In this example, a spiral feed chute 2 is connected and installed at the feed inlet of the crusher 2.

[0028] In this embodiment, the spiral feed chute 2 is spirally ascending in the vertical direction. Its highest point serves as the feed inlet, and its other end connects to the feed inlet of the crusher 2. The height difference between the feed inlet of the spiral feed chute 2 and the feed inlet of the crusher allows the construction waste to be processed, fed into the spiral feed chute 2, to slide down under its own weight and fall into the feed inlet of the crusher 2 for grinding and crushing. Furthermore, the spiral feed chute is designed with at least 0.25 spiral turns. This avoids the problem of insufficient spiral turns hindering dust dispersion due to the curved walls of the spiral feed chute. It also avoids the increased equipment cost and feeding difficulties and blockages caused by excessively long and high feed channels due to an excessive number of spiral turns. In this embodiment, the spiral feed chute has 0.5 spiral turns. This spiral structure complicates the dust dispersion path at the crusher's feed inlet, confining most of the dust within the cavity of the spiral feed chute. The settled dust can then fall back into the crusher with the next batch of waste. Simultaneously, the spiral feed chute increases the volume of the crusher's feed inlet, acting as a buffer chamber for feeding, allowing for the addition of more construction waste at once, thus effectively reducing the feeding frequency and improving crushing efficiency. Furthermore, the spiral feed chute also protects the crusher's feed inlet, preventing the splashing of crushed waste during crushing. In other embodiments, considering the height of the spiral feed chute's feed inlet, making it difficult to manually add the construction waste to be crushed, an inclined conveyor belt is used to deliver the construction waste to the spiral feed chute's feed inlet.

[0029] See Figure 1 To ensure the stable installation of the spiral feed chute, and considering that a large amount of construction waste may be temporarily added to the chute during actual crushing operations, several chute supports 31 are fixedly installed perpendicular to the base 1 in this embodiment to reliably support the spiral feed chute, which has a certain weight. In this example, for ease of installation and maintenance of the construction waste crushing device, see [reference needed]. Figure 1 The spiral feed chute is composed of several sections spliced ​​together, and the sections are fixedly connected by flanges. Considering that the feed inlet of the crusher is vertically upward and not on the same plane as the outlet of the spiral feed chute, making direct connection impossible, a connecting pipe 32 is installed at the end of the spiral feed chute in this example. One end of the connecting pipe 32 is connected to the end flange of the spiral feed chute, and the other end is connected to the flange at the feed inlet of the crusher. Through the connecting pipe 32, the construction waste sliding down the spiral feed chute can be guided to the feed inlet of the crusher, where it is crushed by the rollers.

[0030] Considering the risk of construction waste getting stuck in the crushing mechanism of the crusher during crushing, and the possibility that the unique shape of the construction waste may cause it to roll at the crusher's rollers and fail to be crushed by the rollers, and taking into account the maintenance needs of the crusher's rollers, see [reference needed]. Figure 1 In this example, the vertical cross-section corresponding to the connecting pipe 32 is trapezoidal, and the corresponding vertical cross-section of the connecting pipe 32 is... Figure 1 An operation window is provided at the upper surface position shown. The operation window is hinged to the outer wall of the connecting pipe 32 via a door 321. Opening the door 321 allows for inspection and maintenance of the crusher and facilitates handling of obstructed debris. Additionally, the inner edge of the operation window at the connecting pipe 32 has a wing plate to support the door 321, limiting its movement and preventing it from sliding into the connecting pipe under its own weight when closed. In other embodiments, the door is also equipped with a latch. A sealing strip is attached to the inner edge of the door and / or the wing plate supporting the door at the operation window. The latch ensures a tight fit between the sealing strip at the door and the sealing strip on the wing plate, preventing dust generated during crushing from escaping through the gaps.

[0031] However, the spiral bending structure of the spiral feed chute alone cannot completely prevent the escape of crushing dust. A small amount of dust will still escape from the feed port of the spiral feed chute. Therefore, in this embodiment, see... Figure 1 A cyclone dust collector 4 is configured with an air inlet pipe connected to the cavity of the spiral feed chute. This cyclone dust collector 4 adsorbs most of the smoke and dust, while the remaining smoke and dust is prevented from escaping into the surrounding air by the structure of the spiral feed chute. For details, see [link to details]. Figure 1 In this example, an exhaust port is provided at the feed inlet wall of the crusher. The air inlet of the cyclone dust collector 4 is connected to the exhaust port of the crusher through a dust suction pipe 41. Thus, most of the dust generated at the crusher inlet can be directly sucked into the cyclone dust collector for treatment, reducing the amount of dust in the spiral feed chute cavity. In other embodiments, an exhaust port is provided at the feed inlet of the spiral feed chute. The air inlet of the cyclone dust collector 4 is connected to the exhaust port at the feed inlet of the spiral feed chute through a pipeline. Thus, most of the dust generated by crushing is confined within the cavity of the spiral feed chute by its special structure, while a small portion of the dust escaping from the feed inlet of the spiral feed chute is directly sucked into the cyclone dust collector for treatment through the exhaust port. In some other embodiments, in order to further reduce the possibility of dust emission, a T-joint is connected to the air inlet pipe of the cyclone dust collector. One end of the T-joint is connected to the exhaust hole set on the wall of the crusher feed inlet, and the other end is connected to the exhaust hole set on the feed inlet of the spiral feed chute. Dust is collected at both ends of the spiral feed chute simultaneously to ensure the dust emission prevention effect.

[0032] After being drawn into the cyclone dust collector, the dust is collected in the ash hopper 42 at the bottom of the cyclone dust collector. In this example, to facilitate the cleaning of the dust in the ash hopper 42, the height of the ash hopper 42 is set higher than the discharge port of the crusher, and an ash discharge chute is set between the ash discharge port of the ash hopper and the discharge port of the crusher. Thus, the dust in the ash hopper will fall into the discharge port of the crusher under the guidance of the inclined ash discharge chute. In some other embodiments, to facilitate the falling of the dust in the ash hopper along the ash discharge chute, the bottom of the ash hopper is inclined, and its inclination direction is the same as that of the ash discharge chute. Thus, under the action of gravity, the dust can be more easily discharged to the discharge port of the crusher along the ash discharge chute.

[0033] In some other embodiments, considering that some dust will also be generated at the discharge port of the crusher, in order to reduce the amount of dust that escapes into the surrounding air, the air inlet pipe of the cyclone dust collector in this example is connected to a four-way connector. One end of the four-way connector is connected to the exhaust hole set at the wall of the crusher feed port, one end is connected to the exhaust hole set at the feeding port of the spiral feed chute, and one end is connected to the exhaust hole set at the wall of the crusher discharge port, so as to collect the dust at the discharge port of the crusher.

[0034] Furthermore, to further enhance the dust suppression effect, in some other embodiments, several atomizing nozzles are installed at the feed inlet of the spiral feed chute. Each atomizing nozzle is connected to a water pump placed in a water source via a pipeline. The water mist released by the atomizing nozzles suppresses the settling dust. To improve the dust suppression effect of the atomizing nozzles, the angle between the atomizing nozzles and the vertical direction is not less than 20 degrees, and they are positioned facing into the cavity of the spiral feed chute. This increases the effective range of the water droplets sprayed by the atomizing nozzles and the dust, thereby preventing dust from escaping from the feed inlet of the spiral feed chute.

[0035] Although some preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0036] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of the invention. Therefore, if these modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include these modifications and variations.

Claims

1. A construction waste crushing device, characterized in that, The device includes a base, a crusher fixed to the base and having a feed inlet at the top, a spiral feed chute located above the crusher and connected to the feed inlet of the crusher, and a cyclone dust collector with an air inlet pipe corresponding to and connected to the cavity of the spiral feed chute; the height of the ash hopper of the cyclone dust collector is higher than the height of the discharge port of the crusher, and an ash discharge trough is provided between the ash hopper and the discharge port of the crusher.

2. The construction waste crushing device according to claim 1, characterized in that, The spiral feed chute has a spiral rotation of no less than 0.25 turns.

3. The construction waste crushing device according to claim 1, characterized in that, It also includes a slide support fixed to the base for supporting the spiral feed slide.

4. The construction waste crushing device according to claim 1, characterized in that, The spiral feed chute is connected to the feed inlet of the crusher via a connecting pipe. An operating window is provided at the connecting pipe, and a door for closing the operating window is hinged at the operating window.

5. The construction waste crushing device according to claim 4, characterized in that, The corresponding cross-section of the connecting pipe is trapezoidal.

6. The construction waste crushing device according to claim 1, characterized in that, The air inlet pipe of the cyclone dust collector is connected to the wall of the crusher feed inlet or the spiral feed chute inlet.

7. The construction waste crushing device according to claim 1, characterized in that, The air inlet pipe of the cyclone dust collector is connected to the feed inlet of the crusher via a three-way connector; the other end of the three-way connector is connected to the inlet wall of the spiral feed chute.

8. The construction waste crushing device according to claim 1, characterized in that, The air inlet pipe of the cyclone dust collector is connected to the feed inlet of the crusher via a four-way connector; the other ports of the four-way connector are respectively connected to the inlet wall of the spiral feed chute and the outlet wall of the crusher.

9. The construction waste crushing device according to claim 1, characterized in that, The inlet of the spiral feed chute is provided with several atomizing nozzles that are connected to the water pump via pipelines; the angle between the atomizing nozzles and the vertical direction is not less than 20 degrees and they face the cavity of the spiral feed chute.

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