Anti-blocking and dredging device for under-inclined chute

Abstract

The utility model discloses a kind of under-inclination chute's anti-blocking dredging device in gangue material transfer technical field, including feed hopper and fixedly installed under discharge chute section of feed hopper, and the bottom plate inner surface of discharge chute section is provided with the protruding flow disturbing structure;The bottom plate outside of discharge chute section is installed with vibration motor by high rigidity flange, and vibration transmission plate is provided between the two;The side plate trepanning of feed hopper is connected with air compressor in trepanning, and the end of pipeline of air compressor that extends into feed hopper interior is connected with at least one nozzle, and nozzle points to the inlet accumulation area of discharge chute section;Discharge chute section below is fixedly connected with chute support with damping device, and damping device is arranged in multiple-point symmetry below chute support.The utility model effectively solves the problem that under-inclination chute is easy to block, space requirement is high, improves conveying efficiency and reduces reconstruction engineering difficulty.

Description

Technical Field

[0001] This utility model relates to an anti-clogging and sludge removal device for a sub-inclination chute, belonging to the field of gangue material transfer technology. Background Technology

[0002] As the main device for autonomous conveying of gangue materials under gravity, the chute is responsible for connecting and conveying gangue between different equipment. To ensure that the gangue materials can flow smoothly in the chute, the inclination angle of the chute is generally designed to be between 50° and 60°.

[0003] In existing factory renovation projects, there are often problems such as insufficient factory floor height and the inability to set the placement of new equipment in a reasonable position below existing equipment. As a result, the inclination angle of the chute cannot reach 50°. A chute with an inclination angle of less than 50° is called a sub-inclination chute. Since gangue material has a certain degree of stickiness, there is a risk of blockage and siltation when transporting gangue material in a sub-inclination chute. Summary of the Invention

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a clogging and sludge removal device for under-inclination chutes. It achieves smooth transportation of gangue materials by using vibration as the main method and pneumatics as the auxiliary method. The vibration damping device is set on the chute support to reduce the impact of vibration on the head frame of the belt conveyor and the building foundation. It effectively solves the problems of easy clogging and high space requirements of under-inclination chutes, improves the transportation efficiency and reduces the difficulty of the modification project.

[0005] To achieve the above objectives, this utility model employs the following technical solution:

[0006] In a first aspect, this utility model provides an anti-clogging and sludge-removing device for a sub-inclination chute, comprising a feed hopper and a discharge chute section fixedly installed below the feed hopper, wherein the inner surface of the bottom plate of the discharge chute section is provided with a raised turbulence-disrupting structure; a vibration motor is installed on the outside of the bottom plate of the discharge chute section through a high-rigidity flange, and a vibration transmission plate is provided between the two; the side plate of the feed hopper has an opening and an air compressor is connected to the opening, and the end of the air compressor pipe extending into the inside of the feed hopper is connected to at least one nozzle, and the nozzle points to the inlet accumulation area of ​​the discharge chute section; a chute support with a shock-absorbing device is fixedly connected below the discharge chute section, and the shock-absorbing device is symmetrically arranged at multiple points below the chute support.

[0007] Furthermore, the turbulence structure is distributed laterally discontinuously or spirally along the material travel direction.

[0008] Furthermore, the vibration transmission plate is made of spring steel, and the vibration transmission plate and the bottom plate of the discharge chute section are connected by a composite method of intermittent welding and partial bolting.

[0009] Furthermore, the vibration motor has a built-in or external programmable frequency tuning module, which presets low-frequency and mid-frequency vibration modes that match the characteristics of common gangue materials. The low-frequency range includes 10-25Hz, and the mid-frequency range includes 25-50Hz.

[0010] Furthermore, the end of the air compressor's pipe extending into the feed hopper is connected to an array of nozzles at multiple angles.

[0011] Furthermore, the chute support is welded to the material chute section, and the connection between the chute support and the belt conveyor head frame and civil structure is either welded or bolted.

[0012] Furthermore, the shock absorption device is an elastic damping element with stiffness and damping characteristics, and its selection parameters are matched with the excitation force and operating frequency range of the vibration motor.

[0013] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0014] This invention proposes an anti-clogging and sludge-clearing device for a sub-angle chute. In existing factory renovation projects, where the floor-to-floor height is insufficient to allow for the natural flow of gangue materials in the chute, a vibratory motor can be installed in the chute section, and an air compressor pipeline can be connected through openings in the side plate of the chute's feed hopper. This method, primarily using vibration and secondarily using pneumatics, achieves the anti-clogging and sludge-clearing effect during the transfer of gangue materials in the sub-angle chute. Simultaneously, adding vibration damping devices to the chute supports avoids a rigid connection between the chute and the support positions, effectively reducing the vibration impact of the vibratory motor on the belt conveyor head frame and building foundation. Compared to traditional chutes, which require significant space, this measure greatly reduces the space requirements of the chute, making the chute design more flexible. Attached Figure Description

[0015] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments and descriptions of this utility model are used to explain this utility model and do not constitute an undue limitation thereof. In the drawings:

[0016] Figure 1 A front view of an anti-clogging and sludge-removing device for a sub-inclination chute provided in an embodiment of this utility model;

[0017] Figure 2 A side view of an anti-clogging and sludge-removing device for a sub-inclination chute provided in an embodiment of this utility model.

[0018] In the diagram: 1. Feed hopper; 2. Discharge chute section; 3. Vibration motor; 4. Air compressor; 5. Chute support; 6. Vibration damping device. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0020] The following detailed description is exemplary and intended to provide further detailed explanation of the present invention. Unless otherwise specified, all technical terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this invention.

[0021] Example:

[0022] Please see Figures 1 to 2 This embodiment discloses an anti-clogging and sludge-removing device for a sub-inclination angle chute, comprising: a feed hopper 1, a discharge chute section 2, a vibrating motor 3, an air compressor 4, a chute support 5, and a shock absorption device 6, wherein:

[0023] The discharge chute section 2 is fixed below the feed hopper 1; the inner surface of the bottom plate of the discharge chute section 2 is provided with a raised turbulence structure, which is distributed laterally intermittently or spirally along the material travel direction to change the material flow state and reduce adhesion.

[0024] The vibratory motor 3 is installed on the bottom plate of the discharge chute section 2. The vibratory motor 3 is mounted on the outside of the bottom plate of the discharge chute section 2 via a high-rigidity flange. A vibration transmission plate made of spring steel is installed between the two. The vibration transmission plate and the bottom plate of the discharge chute section 2 are connected by a composite method of intermittent welding and partial bolting to ensure efficient transmission of vibration energy to the chute body. The vibratory motor 3 has a built-in or external programmable frequency tuning module, preset with low-frequency (10-25Hz) and mid-frequency (25-50Hz) vibration modes matching the characteristics of common gangue materials.

[0025] The air compressor 4 is connected to the feed hopper 1 through the side plate opening of the feed hopper 1; the end of the air compressor 4's pipe extending into the feed hopper 1 is connected to one or more nozzle arrays at a specific angle, and the nozzles point towards the inlet accumulation area of ​​the discharge chute section 2.

[0026] The chute support 5 is located below the discharge chute section 2 and is welded to the discharge chute section 2. The connection between the chute support 5 and the belt conveyor head frame and civil structure is either welded or bolted. When bolted connection is used, the mounting surface of the chute support 5 is provided with a thickened base plate to ensure that the connection rigidity and strength meet the vibration requirements.

[0027] The vibration damping device 6 is installed at the chute support 5 to reduce the impact of vibration on the head frame of the belt conveyor and the building foundation. The vibration damping device 6 is arranged symmetrically at multiple points below the chute support 5 to ensure uniform dissipation of vibration energy. The vibration damping device 6 is an elastic damping element with specific stiffness and damping characteristics (such as a composite rubber vibration damper, low-frequency gas spring, etc.), and its selection parameters are matched with the excitation force and operating frequency range of the vibration motor 3.

[0028] The dredging method using this type of under-inclination chute anti-clogging and dredging device includes the following steps:

[0029] S1. Vibration with a specific frequency and amplitude is generated by the vibration motor 3 to move the gangue material in the feeding chute section 2 and prevent it from accumulating on the bottom plate and side walls. According to the initial adhesion characteristics of the material, the excitation mode is selected by the frequency tuning module: for highly viscous and wet materials, a low-frequency large-amplitude mode (10-25Hz, amplitude 5-10mm) is started to break the overall adhesion of the material; for materials with slightly better fluidity, a medium-frequency mode (25-50Hz, amplitude 1-5mm) is started to promote uniform downward movement; the vibration transmission plate enhances the longitudinal uniformity of vibration and avoids local resonance failure of the chute.

[0030] S2. Combined with the pneumatic action of the air compressor 4 pipeline, the blockage material in the discharge chute section 2 is blown away from a specific direction in a specific pulsating or continuous airflow pattern, especially targeting the adhesion layer near the inlet and in the turbulence structure area.

[0031] S3. Use matched vibration damping devices 6 to reduce the vibration impact on the belt conveyor head frame and building foundation to an acceptable level.

[0032] S4. In the initial stage of equipment operation or when the material blockage warning signal is triggered, the air compressor 4 pipeline should be started first for purging, and then or simultaneously the vibration motor 3 should be started to form a synergistic clearing effect; after the material flow is smooth, the vibration intensity or air pressure intensity can be appropriately reduced to save energy consumption.

[0033] It should be noted that the vibration frequency of the vibratory motor 3 and the air pressure parameters of the air compressor 4 pipeline are dynamically adjusted according to the viscosity and conveying capacity of the gangue material. Specifically, the adjustment is based on: detecting the accumulation thickness and flow velocity signals of material in key areas within the chute, or setting a graded adjustment strategy based on experience / physical property parameters, and possessing remote control and automatic mode switching functions. The dynamic adjustment of the vibration frequency includes: automatically switching between low-frequency and medium-frequency modes based on real-time material flow image analysis at the chute inlet or data from the bottom pressure sensor; and automatically superimposing transient high-frequency pulses (>50Hz, duration <3s) to impact the blockage interface when blockage signs are detected (sudden pressure increase / image stagnation).

[0034] This solution adds a raised, turbulent structure with a specific distribution pattern (lateral discontinuous / spiral) to the inner surface of the bottom plate (vibration zone) of the material discharge chute section. This structural design aims to actively change the material flow state and disrupt the potential stable adhesion layer, significantly differentiating it from ordinary smooth chutes. The air path ends with an array of nozzles / outlets at specific angles positioned in areas prone to blockage. This improves the precision and targeting of pneumatic sludge removal, going beyond simply introducing compressed air; it employs a timing and synergistic strategy of "pneumatic priority start-up," "pneumatic-vibration synergy," and "energy saving and consumption reduction after smooth flow." This operational process is an innovative point for improving sludge removal efficiency and energy saving. The "matching selection" of the vibration damping device and the excitation force and frequency of the vibration motor, along with the requirements for multiple points and energy dissipation, takes into account the design of system dynamics.

[0035] This solution has the following improvements:

[0036] I. Structural Combination Optimization. Vibration (with a turbulent base plate), targeted aerodynamics, and dynamic matching damping are combined to form a synergistic overall solution. In particular, the combination of "vibration base plate turbulence" and "targeted aerodynamic inlet" is not a simple superposition, but a dual guarantee for the two easily blocked points of the under-inclination chute inlet and the long-distance base plate, solving the problem of the ineffectiveness of single methods.

[0037] II. Proactive Unblocking Strategy. Pneumatic unblocking is not always on or only used after blockage occurs. "Pneumatics is activated first when a blockage warning signal is triggered" and "pneumatic vibration synergy" reflects a proactive prevention and rapid response unblocking strategy. This control logic improves the reliability and efficiency of anti-blocking.

[0038] Third, energy-saving logic is embedded. In addition to the core function of clearing congestion, an energy-saving and consumption-reducing logic of "reducing frequency / voltage after smooth operation" is embedded, which reflects the deep optimization of practicality while meeting the functional requirements.

[0039] IV. Signal-driven. This solution proposes using the detection of "accumulation thickness and flow velocity" signals as the basis for adjustment, upgrading the traditional reliance on experience to real-time / semi-real-time control based on physical quantities.

[0040] As is known from common technical knowledge, this utility model can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones. All modifications within the scope of this utility model or its equivalents are included in this utility model.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of this utility model. Any modifications or equivalent substitutions that do not depart from the spirit and scope of this utility model should be covered within the protection scope of the claims of this utility model.

Claims

1. A device for preventing blockage and clearing silt from a sub-inclination chute, characterized in that, It includes a feeding hopper (1) and a discharge chute section (2) fixedly installed below the feeding hopper (1), and the inner surface of the bottom plate of the discharge chute section (2) is provided with a raised turbulence structure; a vibration motor (3) is installed on the outside of the bottom plate of the discharge chute section (2) through a high-rigidity flange, and a vibration transmission plate is provided between the two; the side plate of the feeding hopper (1) has an opening and an air compressor (4) is connected to the opening; the end of the pipe of the air compressor (4) extending into the inside of the feeding hopper (1) is connected to at least one nozzle, and the nozzle points to the inlet accumulation area of ​​the discharge chute section (2); a chute support (5) with a shock-absorbing device (6) is fixedly connected below the discharge chute section (2), and the shock-absorbing device (6) is arranged symmetrically at multiple points below the chute support (5).

2. The anti-clogging and sludge-removing device for a sub-inclination angle chute according to claim 1, characterized in that, The turbulence-disrupting structure is distributed laterally or in a spiral shape along the direction of material travel.

3. The anti-clogging and sludge-removing device for a sub-inclination angle chute according to claim 1, characterized in that, The vibration transmission plate is made of spring steel, and the vibration transmission plate and the bottom plate of the discharge chute section (2) are connected by a composite method of intermittent welding and local bolting.

4. The anti-clogging and sludge-removing device for a sub-inclination angle chute according to claim 1, characterized in that, The vibration motor (3) has a built-in or external programmable frequency tuning module, which presets low-frequency and mid-frequency vibration modes that match the characteristics of common gangue materials. The low-frequency range includes 10-25Hz, and the mid-frequency range includes 25-50Hz.

5. The anti-clogging and sludge-removing device for a sub-inclination angle chute according to claim 1, characterized in that, The air compressor (4) has a pipe that extends into the feed hopper (1) and is connected to an array of nozzles at multiple angles.

6. The anti-clogging and sludge-removing device for a sub-inclination angle chute according to claim 1, characterized in that, The chute support (5) is welded to the material chute section (2), and the connection between the chute support (5) and the belt conveyor head frame and civil structure is either welded or bolted.

7. The anti-clogging and sludge-removing device for a sub-inclination angle chute according to claim 1, characterized in that, The shock absorption device (6) is an elastic damping element with stiffness and damping characteristics, and its selection parameters are matched with the excitation force and operating frequency range of the vibration motor (3).

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