A concrete feeding port for reducing dust

Abstract

This utility model relates to the field of dust removal equipment, specifically disclosing a concrete feeding inlet for reducing dust emissions. The inlet includes a funnel with several baffles at its opening. On the same side of each baffle, an adjusting wheel, a lever, and a pull rod are arranged. Moving the pull rod changes the tilt angle of the baffles via the lever and adjusting wheel. This design allows for the simultaneous flipping of multiple small baffles. Due to the small swing amplitude of the baffles, the funnel's opening and closing speed is fast, resulting in a more rapid adjustment process. This quickly closes the funnel, confining dust inside, which is then uniformly removed using a negative pressure extraction device. The combination of baffles, adjusting wheel, lever, and pull rod in this design is simple, reliable, low-cost, and economical.

Description

Technical Field

[0001] This utility model belongs to the field of dust removal equipment, and specifically relates to a concrete feeding port that reduces dust. Background Technology

[0002] Concrete is made by slowly mixing sand, fine aggregate, cement, water, and other raw materials in a certain proportion. During concrete production, pouring these various raw materials into the mixing plant generates a large amount of dust, resulting in harsh working conditions at the concrete manufacturing site, polluting the air and harming workers' health. To solve the dust problem, existing technologies typically install negative pressure extraction equipment at the feeding port. This equipment draws away the dust and discharges it into a dust collection unit (water, filter, or bag filter). In actual use, the material immediately fed into the feeding port generates dust with a high flow rate, and the negative pressure extraction equipment struggles to handle the bursts of dust, leading to some dust leakage and further contamination of the working environment. Utility Model Content

[0003] The purpose of this invention is to provide a concrete feeding port that can resist dust outbreaks and reduce dust.

[0004] To achieve the above objectives, this utility model provides a concrete feeding port that reduces dust, including a funnel. The funnel is wider at the top and narrower at the bottom. Several baffles are arranged side by side at the opening of the funnel. Each baffle is a rectangular plate. Each baffle has a rotating shaft at both ends, which is inserted into the side wall of the funnel, allowing the baffle to rotate. After rotation, the baffles can form a plane or create gaps between them for feeding. An adjusting wheel is provided at the same end of each baffle. The adjusting wheel has a through groove in the middle. Rotation of the adjusting wheel drives the baffles to rotate. Each groove of the adjusting wheel has a lever. The bottom of each lever is hinged to different positions of the same pull rod. After the pull rod moves axially, the tilt angle of the adjusting wheel is changed by tilting the lever. The end of the pull rod is provided as a handle for worker operation or has a telescopic mechanism for machine operation.

[0005] As an improvement to the above solution, the pull rod is located below the adjusting wheel, and at least two limiting rings are provided on the side of the funnel. The limiting rings are fixedly set and surround different positions of the pull rod, so that the pull rod can only move in the axial direction.

[0006] As an improvement to the above solution, when each of the baffles is on the same plane blocking the funnel's channel, the angle between the lever and the pull rod is 45°; when each of the baffles is separated from each other and opening the funnel's channel, the angle between the lever and the pull rod is 135°.

[0007] As an improvement to the above solution, each of the levers and the pull rods is made of aluminum rods, and the levers and the pull rods are hinged by a pin.

[0008] As an improvement to the above solution, when the end of the pull rod is equipped with a telescopic mechanism operated by a machine, the telescopic mechanism is selected as a cylinder or an electric pull rod, and the control switch of the telescopic mechanism is arranged on the column, which is located next to the funnel.

[0009] As an improvement to the above solution, the outer wall of the funnel is provided with a bracket for supporting the telescopic mechanism.

[0010] This invention offers the following advantages: It allows for the simultaneous flipping of multiple small-sized baffles. Due to the small swing amplitude of the baffles, the funnel's own channels open and close quickly, resulting in a faster adjustment process. This allows for rapid closure of the funnel, confining dust inside, which is then uniformly removed by a negative pressure extraction device. The baffles, adjusting wheels, levers, and pull rods used in this design are simple, reliable, low-cost, and economical. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the feeding port in one embodiment;

[0012] Figure 2 This is a schematic diagram illustrating the usage state of the feeding port in one embodiment.

[0013] Explanation of reference numerals in the attached drawings: 11. Funnel; 12. Column; 13. Limiting ring; 21. Stop bar; 22. Adjusting wheel; 31. Lever; 32. Pull rod; 33. Telescopic mechanism; 34. Bracket. Detailed Implementation

[0014] In the description of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "top surface", "bottom surface", "inner", "outer", "inner side", "outer side", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0015] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If the terms "first," "second," and "third" are used in the description, they are for descriptive purposes and to distinguish technical features, and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The embodiments of this utility model will now be described based on its overall structure.

[0017] Reference Figure 1 and Figure 2 This utility model discloses a concrete feeding port that reduces dust, including a funnel 11. The funnel 11 is wider at the top and narrower at the bottom. Several baffles 21 are arranged side by side at the opening of the funnel 11. Each baffle 21 is a rectangular plate. Each baffle 21 has a rotating shaft at both ends and is inserted into the side wall of the funnel 11 through the rotating shaft, so that the baffle 21 can rotate. After multiple baffles 21 rotate, they can form a plane or create gaps between each other for feeding. Each of the stop bars 21 has an adjusting wheel 22 on the same side end. The adjusting wheel 22 has a through groove in the middle. Rotating the adjusting wheel 22 causes the stop bar 21 to rotate. Each adjusting wheel 22 has a lever 31 in its groove. The bottom of each lever 31 is hinged to different positions of the same pull rod 32. When the pull rod 32 moves axially, the tilt angle of the adjusting wheel 22 is changed by tilting the lever 31. The end of the pull rod 32 is provided as a handle for worker operation or has a telescopic mechanism 33 for machine operation. Figure 1 As shown, the rightmost adjusting wheel 22 has a hidden end cap, which is used to demonstrate the connection between the lever 31 and the adjusting wheel 22; the lever 31 is slidably connected to the slide groove.

[0018] As an improvement to the above solution, the pull rod 32 is located below the adjusting wheel 22, and at least two limiting rings 13 are provided on the side of the funnel 11. The limiting rings 13 are fixedly set and surround different positions of the pull rod 32, so that the pull rod 32 can only move in the axial direction.

[0019] As an improvement to the above solution, when all the baffles 21 are on the same plane blocking the channel of the funnel 11, the angle between the lever 31 and the pull rod 32 is 45°; when all the baffles 21 are separated and opening the channel of the funnel 11, the angle between the lever 31 and the pull rod 32 is 135°. At this time, the swing angle of the baffle 21 is 90°, changing from horizontal to vertical; in other solutions, different initial angles can also be selected to change the swing angle of the baffle 21.

[0020] As an improvement to the above solution, each of the levers 31 and pull rods 32 is made of aluminum rods, and the levers 31 and pull rods 32 are hinged by a pin. In other solutions, the levers 31 and pull rods 32 can also be made of slender aluminum strips.

[0021] As an improvement to the above solution, when the end of the pull rod 32 is equipped with a telescopic mechanism 33 operated by a machine, the telescopic mechanism 33 is selected as a cylinder or an electric pull rod 32, and the control switch of the telescopic mechanism 33 is arranged on the column 12, which is located next to the funnel 11. Figure 2 As shown, after the raw materials are piled up on the platform, the worker presses the "open" button on the column 12, and the multiple baffles 21 rotate, allowing the funnel 11 to pass through vertically. Correspondingly, the column 12 is also equipped with a "close" button.

[0022] As an improvement to the above solution, the outer wall of the funnel 11 is provided with a bracket 34 for supporting the telescopic mechanism 33. By adopting the above solution, the telescopic mechanism 33 can be arranged close to the pull rod 32, so as to facilitate its pulling of the pull rod 32.

[0023] This solution can simultaneously flip multiple small-sized baffles 21. Due to the small swing amplitude of the baffles 21, the funnel 11 opens and closes quickly, and the adjustment process is more rapid, thus quickly closing the funnel 11 and confining the dust inside the funnel 11. Combined with a negative pressure extraction device, the dust is then uniformly extracted. The baffles 21, adjusting wheel 22, lever 31, and pull rod 32 used in this solution have a simple and reliable assembly method, low manufacturing cost, and are economical and practical.

[0024] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A concrete feeding inlet for reducing dust, comprising a funnel, said funnel being wider at the top and narrower at the bottom, characterized in that: Several baffles are arranged side-by-side at the opening of the funnel. Each baffle is a rectangular plate with a pivot at both ends. The pivots are inserted into the side wall of the funnel, allowing the baffles to rotate. After rotation, the baffles can form a plane or create gaps between them for feeding. An adjusting wheel is provided at the same end of each baffle. The adjusting wheel has a through groove in the middle. Rotation of the adjusting wheel drives the baffles to rotate. A lever is provided in the groove of each adjusting wheel. The bottom of each lever is hinged to different positions of the same pull rod. After the pull rod moves axially, the lever tilts, thereby changing the tilt angle of the adjusting wheel. The end of the pull rod is provided as a handle for manual operation or has a telescopic mechanism for machine operation.

2. The concrete feeding inlet for reducing dust as described in claim 1, characterized in that: The pull rod is located below the adjusting wheel, and at least two limiting rings are provided on the side of the funnel. The limiting rings are fixedly set and surround different positions of the pull rod, so that the pull rod can only move in the axial direction.

3. The concrete feeding inlet for reducing dust as described in claim 2, characterized in that: When all the baffles are on the same plane blocking the funnel's passage, the angle between the lever and the pull rod is 45°; when the baffles are separated and opening the funnel's passage, the angle between the lever and the pull rod is 135°.

4. The concrete feeding port for reducing dust as described in claim 3, characterized in that: Each of the aforementioned levers and pull rods is made of aluminum rods, and the levers and pull rods are hinged by a pin.

5. The concrete feeding inlet for reducing dust as described in claim 1, characterized in that: When the end of the pull rod is equipped with a telescopic mechanism operated by a machine, the telescopic mechanism is selected as a cylinder or an electric pull rod, and the control switch of the telescopic mechanism is arranged on the column, which is located next to the funnel.

6. The concrete feeding inlet for reducing dust as described in claim 5, characterized in that: The outer wall of the funnel is provided with a bracket for supporting the telescopic mechanism.

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