Multi-step short-process anti-blocking vibrating feeder

Abstract

The utility model discloses a multi-step short-process anti-blocking vibrating feeder which comprises a screen box, a feeding bottom plate is arranged on the front section in the screen box, a screening section is arranged behind the feeding bottom plate in the screen box, the screening section is a step screening section arranged in a step shape, and a vibrating device is installed at the bottom of the feeding bottom plate. The two sides of the bottom of the screening section are installed on spring bases through damper springs. According to the vibrating feeder, the screening sections of the vibrating feeder are designed in a step-shaped section mode, the material screening process is shortened, and materials can flow forwards more easily in an impact mode. And meanwhile, each screening section screen seam adopts a trumpet-shaped screen seam design along the material flow direction, so that large stones clamped in the screening screen seams in the front are overturned forwards and fall off under the impact of machine vibration and forward flowing materials, the phenomenon that the blocky materials are clamped into the screen seams is reduced, and the normal operation of equipment is prevented from being influenced by material blockage.

Description

Technical Field

[0001] This utility model belongs to the field of feeding equipment technology, specifically relating to a multi-stage short-process anti-clogging vibratory feeder. Background Technology

[0002] In industries such as mining, metallurgy, building materials, and chemicals, a type of equipment called a feeder is typically installed at the front end of material crushing equipment. Feeders are generally classified into heavy-duty plate feeders, light-duty plate feeders, trough feeders, reciprocating feeders, and vibrating feeders, among others. The main function of these feeders is to continuously, uniformly, and stably feed material to the crushing equipment, preventing blockage at the feed inlet and ensuring the normal operation of the crushing equipment.

[0003] As crushing equipment becomes increasingly larger, so too do feeding devices. Feeders are handling more and more material. Previous types of heavy-duty plate feeders, light-duty plate feeders, trough feeders, and reciprocating feeders not only had low load-bearing capacity, but also fed material indiscriminately, regardless of particle size. This meant that even material that had reached the required crushing size had to pass through the crushing chamber again, reducing the output of the crushing equipment and increasing wear on the crushing components. Therefore, a multi-stage, short-flow, anti-clogging vibrating feeder was designed. This feeder can pre-screen out useless soil and material that has already reached the required crushing size, eliminating the need for it to re-enter the crushing equipment. This increases the output of the crushing equipment and reduces wear on its components. To enhance the screening function of the feeder, a vibration function was added to the screening feeder, allowing for further screening of the material entering the crushing equipment, thus creating the vibrating screening feeder. However, with the increasing size of feeding equipment, the amount of material carried by the feeder is increasing, and the clogging of the feeder screening section is becoming more and more common. In particular, when screening cobblestones produced from river dredging with a high mud content and high water content, the cobblestones often get stuck in the screening gaps due to their high mud and sand content and the smooth, rounded surfaces of the large cobblestones. In some cases, the more vibration occurs, the more firmly they get stuck in the screening gaps, affecting the screening of subsequent materials and sometimes forcing the machine to be stopped to clean the feeder screening section. Summary of the Invention

[0004] Therefore, this utility model designs a multi-step short-flow anti-clogging vibrating feeder. By designing the screening section of the vibrating feeder in a stepped manner, the material screening process is shortened, making it easier for the material to flow forward in an impact manner.

[0005] The objective of this utility model is achieved through the following means:

[0006] A multi-stage short-process anti-clogging vibrating feeder includes a screen box, with a feeding base plate at the front and a screening section behind the feeding base plate. The screening section is a stepped screening section. A vibration device is installed at the bottom of the feeding base plate, and the bottom sides of the screening section are mounted on spring bases via damping springs.

[0007] The aforementioned multi-stage short-process anti-clogging vibratory feeder also has a vibration device installed at the bottom of the feed base plate, and the bottom sides of the feed base plate are mounted on spring bases by damping springs.

[0008] The aforementioned multi-stage short-process anti-clogging vibrating feeder includes a stepped screening section comprising a screen bar support beam, on which several screen bars are vertically installed, forming screen gaps between adjacent screen bars, and the top of the vibration damping spring is installed on the screen bar support beam.

[0009] The aforementioned multi-stage short-process anti-clogging vibrating feeder features a progressively smaller screen gap in the screening section from the feed end to the discharge end.

[0010] In the aforementioned multi-stage short-process anti-clogging vibrating feeder, the screen bars are trapezoidal, and the screen gaps between adjacent screen bars are funnel-shaped.

[0011] The aforementioned multi-stage short-process anti-clogging vibrating feeder consists of 4-6 stepped screening sections with varying heights between them.

[0012] The aforementioned multi-stage short-process anti-clogging vibrating feeder has a drop of 100-600mm.

[0013] Compared with the prior art, the present invention has the following technical effects:

[0014] This utility model patent shortens the material screening process by using a stepped segment design for the screening section of the vibrating feeder, making it easier for the material to flow forward in an impact-like manner. Simultaneously, the screen openings in each screening section adopt a funnel-shaped design along the material flow direction, causing large stones stuck in the screen openings to flip forward and fall off under the impact of machine vibration and the forward-flowing material. This reduces the occurrence of blocky materials getting stuck in the openings and prevents blockages from affecting the normal operation of the equipment. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a top view of the present invention. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0018] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0020] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0021] The following is in conjunction with the appendix Figures 1-2 The structure and working process of this utility model will be described in detail.

[0022] Currently available vibrating feeders generally include a screening box, which is welded together with a rear baffle, a bottom plate, and two side plates. A vibrating device is installed under the bottom plate, and the entire screening box is a movable part. The bottom plate is a long-flow screening section with screen slots. This section allows for the pre-screening of mud and materials that have already passed the crushing particle size, eliminating the need for them to enter the crushing equipment. Simultaneously, the vibrating device further screens the material entering the crushing equipment. This screening section is a single-pass, long-flow planar screening section. With the increasing size of feeding equipment and the growing volume of materials handled by the feeders, material blockage in the screening section is becoming more frequent. This is especially true when screening pebbles from river dredging with high mud and water content. Due to the high mud and sand content and the smooth, non-angular surfaces of the large pebbles, they often get stuck in the screen slots, sometimes becoming more firmly lodged with vibration, affecting the screening of subsequent materials and necessitating a shutdown to clean the feeder's screening section.

[0023] To address this issue, this invention improves the screening section of the feeder, combining... Figure 1 and Figure 2 As shown, the specific improvements are as follows: A multi-step short-process anti-clogging vibrating feeder includes a screen box 1, with a feeding bottom plate at the front of the screen box and a screening section behind the feeding bottom plate. The screening section is a stepped screening section 2 with a stepped arrangement. A vibration device 6 is installed at the bottom of the feeding bottom plate, and the bottom sides of the screening section are mounted on a spring base 5 by vibration damping springs 4.

[0024] The vibration device 6 of this utility model is a vibrating motor. The top of the vibrating motor is tightly pressed against the bottom of the feed plate. Generally, two vibrating motors are installed in parallel on one feeder. The power of the vibrating motor is set according to the different models of feeders. Generally, the power of the vibrating motor increases with the increase of the feeder's hourly output. The rotation of the eccentric block in the vibrating motor generates an excitation force, causing the screen box to make a forced continuous circular or near-circular motion. The material is continuously thrown along the inclined screen bar surface with the screen box. The material with a particle size smaller than the screen bar gap continuously falls, while the material with a particle size larger than the screen bar gap is continuously and evenly fed into the receiving port of the crushing equipment.

[0025] The housing of this utility model is used by a feeder to store and prevent material spillage. Its rear baffle, bottom plate, and side plates are generally made of 16Mn steel plate with good weldability and excellent strength and toughness. The rear baffle, bottom plate, and side plates are equipped with wear-resistant liners fixed with bolts to extend their service life.

[0026] The gap between the screen bars in this invention can be adjusted according to the size of the material and its soil and moisture content. The screen bars in the stepped screening section are divided into 4-6 stepped segments, and the length of each segment is designed according to the specific size requirements of different series of multi-step short-process anti-clogging vibrating feeders. The drop between each adjacent stepped screen bar is generally designed according to the different feeder models, and the drop height varies from 100-600 mm.

[0027] The multi-step short-process anti-clogging vibratory feeder of this utility model also has a vibration device installed at the bottom of the feed base plate, and the bottom sides of the feed base plate are mounted on the spring base by damping springs.

[0028] The multi-stage short-process anti-clogging vibrating feeder of this utility model includes a screen bar support beam 3, which is installed at the bottom of the housing and serves as a support mechanism. Several screen bars 7 are vertically installed on the screen bar support beam, each bolted to the support beam. When a worn or failed screen bar needs to be replaced, the fixing bolts are removed to install a new screen bar. Screen gaps 8 are formed between adjacent screen bars. The top of a vibration damping spring is installed on the screen bar support beam and on a spring seat, which is fixed to both sides of the feeder's screen box. The bottom of the spring is fixed to a spring base 5, serving a vibration damping function.

[0029] The multi-stage short-process anti-clogging vibrating feeder of this utility model has a screen gap that gradually decreases from the feeding end to the discharging end in the screening section.

[0030] The multi-stage short-process anti-clogging vibrating feeder of this utility model has trapezoidal screen bars and the screen gaps between adjacent screen bars are funnel-shaped.

[0031] This invention improves upon the current single-layer, long-flow screening section of feeders by adding multiple stepped screening sections. This reduces the material flow in each screening section, allowing material stuck in the screening gaps to be more easily impacted during material flow, reducing jamming and increasing screening and unloading capacity. Each screening section is designed with a funnel-shaped screen opening along the material flow direction. Large stones stuck in the screening section are flipped forward by the machine vibration and the impact of the forward-flowing material. This prevents material of the particle size stuck in the earlier screen openings from getting stuck, as the funnel shape widens towards the later openings, causing previously stuck material to fall off automatically. The screen bars in each screening section are secured with steel hoops, which are then tightened with high-strength bolts. These hoops and bolts fix the screen bars to the screen bar support beams. This allows for adjustment of the screen bar gaps according to the size of the material to be screened, adapting to different production environments and screening materials of various particle sizes. At the same time, when the screen bars are worn out, each section of the screen bar can be replaced by removing the bolts.

[0032] The above description is only a preferred embodiment of the present utility model. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present utility model, and these should also be considered within the protection scope of the present utility model.

Claims

1. A multi-stage, short-process anti-clogging vibrating feeder, comprising a screen box (1), wherein the front section of the screen box is a feeding bottom plate, and the rear section of the feeding bottom plate is a screening section, characterized in that: The screening section is a stepped screening section (2) with a step-shaped arrangement. A vibration device (6) is installed at the bottom of the feed base plate. The bottom sides of the screening section are mounted on the spring base (5) by vibration damping springs (4).

2. The multi-stage short-process anti-clogging vibrating feeder according to claim 1, characterized in that: A vibration device is also installed at the bottom of the feed base plate, and the bottom sides of the feed base plate are mounted on spring bases via damping springs.

3. The multi-stage short-flow anti-clogging vibrating feeder according to claim 1, characterized in that: The stepped screening section includes a screen bar support beam (3), on which several screen bars (7) are vertically installed, and screen gaps (8) are formed between adjacent screen bars. The top of the vibration damping spring is installed on the screen bar support beam.

4. The multi-stage short-process anti-clogging vibrating feeder according to claim 3, characterized in that: From the feed end to the discharge end, the screen gaps in the screening section gradually decrease.

5. The multi-stage short-process anti-clogging vibrating feeder according to claim 3, characterized in that: The screen bars are trapezoidal, and the gaps between adjacent screen bars are funnel-shaped.

6. The multi-stage short-process anti-clogging vibrating feeder according to claim 1, characterized in that: The stepped screening section consists of 4-6 stepped segments with varying heights from each other.

7. The multi-stage short-process anti-clogging vibrating feeder according to claim 6, characterized in that: The drop is 100-600mm.

Images