Light and heavy garbage separation equipment based on Coanda effect

Abstract

The utility model belongs to the technical field of separation, and particularly relates to light and heavy garbage separation equipment based on the Coanda effect, which comprises a separation bin and a horizontally arranged conveyor, the separation bin stretches across the conveyor, and the lower end face of the separation bin abuts against the upper surface of a machine frame in the conveyor. The separation bin has a first direction and a second direction which are perpendicular to each other and are horizontal, the separation bin is provided with a front side plate and a rear side plate which are perpendicular to the first direction, and the separation bin is further provided with a left side plate and a right side plate which are perpendicular to the second direction; an air inlet pipe extending in the first direction is arranged at the top of the separation bin; the two air inlet pipes are arranged on the two sides, in the second direction, of the inner cavity of the separation bin and are close to the left side plate and the right side plate correspondingly. A row of air nozzles are formed in the side, deviating from the separation bin along the center of the second direction, of the air inlet pipe and face the adjacent left side plate or right side plate; the front side plate faces the feeding direction of the conveyor, an inlet is formed in the lower end of the front side plate, and a heavy mass outlet is formed in the lower end of the rear side plate.

Description

Technical Field

[0001] The utility model relates to the technical field of separation, and more specifically to a light and heavy garbage separation device based on the Coanda effect. Background Art

[0002] During the garbage recycling process, solid matter is generally separated by air separation according to the density of the solid waste (i.e. light and heavy).

[0003] However, this solution requires using a conveyor to transport the waste to the bin, where it is then separated into light and heavy waste outlets using a winnowing mechanism. Finally, separate conveyors are installed at the light and heavy waste outlets. This setup makes it difficult to separate light and heavy waste while the conveyor is being transported without stopping. Utility Model Content

[0004] The purpose of the present invention is to overcome or at least alleviate the deficiencies of the above-mentioned prior art and to solve at least one of the above-mentioned technical problems.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a light and heavy garbage separation equipment based on the Coanda effect, including a separation bin and a horizontally arranged conveyor, the separation bin spans above the conveyor, the lower end surface of the separation bin abuts against the upper surface of the frame in the conveyor, the separation bin has a first direction and a second direction that are perpendicular to each other and horizontal, the separation bin has a front side plate and a rear side plate perpendicular to the first direction, and the separation bin also has a left side plate and a right side plate perpendicular to the second direction; an air intake pipe extending along the first direction is provided on the top of the separation bin; there are two air intake pipes, and the two air intake pipes are arranged on both sides of the inner cavity of the separation bin along the second direction and are respectively arranged close to the left side plate and the right side plate.

[0006] A row of air jets is provided on the side of the air inlet pipe away from the center of the separation bin along the second direction. The openings of the air jets are arranged tilted downward and the air jets are directed toward the adjacent left plate or right plate; the front side plate is opposite to the feeding direction of the conveyor, the lower end of the front side plate is provided with an inlet, and the lower end of the rear side plate is provided with a heavy outlet; a light outlet is provided at the top of the separation bin.

[0007] The beneficial effects of one or more of the above technical solutions are:

[0008] In this solution, the separation bin spans above the conveyor, with its lower end abutting against the upper surface of the conveyor's frame. The front side panel of the separation bin is equipped with a feed port, the lower end of the rear side panel is equipped with a heavy-weight outlet, and the top of the separation bin is equipped with a light-weight outlet. The top of the separation bin is also equipped with an air inlet pipe extending in a first direction. This arrangement facilitates the use of the Coanda effect to direct airflow downward along the side walls of the separation bin, and utilizes the lower air pressure at the center of the separation bin to move upward. This upward airflow separates the light and heavy waste on the conveyor, with the light waste moving upward and discharged from the light outlet, while the heavy waste is discharged from the heavy outlet along the conveyor. This arrangement facilitates the separation of light and heavy waste during conveyor transportation.

[0009] In addition, the present solution includes two air intake pipes, which are arranged side by side on either side of the separation chamber's inner cavity along the second direction. This arrangement facilitates placement of the air intake pipe's jet outlets close to the left and right panels, thereby reducing airflow losses within the separation chamber. Furthermore, this arrangement facilitates relocating the two air intake pipes to either side of the separation chamber's inner cavity, preventing them from occupying the central space of the separation chamber, thereby preventing the air intake pipes from obstructing the upward movement of lightweight waste from the central portion of the separation chamber and obstructing the discharge of lightweight waste from the lightweight outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is an axonometric diagram of the overall structure of an embodiment of the present utility model;

[0011] Figure 2 It is a schematic cross-sectional view of the overall structure in the main viewing direction in an embodiment of the utility model;

[0012] Figure 3 It is a sectional view of the overall structure in the side view direction of the embodiment of the utility model;

[0013] Figure numerals: 1. Exhaust pipe; 2. Separation chamber; 201. Front side panel; 202. Left side panel; 3. Vertical side; 4. Frame; 5. Conveyor; 6. Heavy weight outlet; 7. Sealing piece; 8. Inlet pipe; 801. Jet port; 9. Clamp; 10. Light weight outlet; 11. Avoidance space. DETAILED DESCRIPTION

[0014] The following describes exemplary embodiments of the present invention with reference to the accompanying drawings. It should be understood that these specific descriptions are only used to teach those skilled in the art how to implement the present invention, and are not intended to exhaust all possible embodiments of the present invention, nor to limit the scope of the present invention.

[0015] In this application, the conveying direction along the conveyor is defined as the first direction, and the width direction of the conveyor is defined as the second direction. Here, the first direction and the second direction are both set horizontally. In this application, the Coanda effect (also known as the Coanda effect) is characterized by the tendency of airflow to deviate from its original flow direction and flow along the surface of a protruding object.

[0016] Reference Figure 1-Figure 3 One or more embodiments of the present invention provide a light and heavy garbage separation device based on the Coanda effect, including a separation bin 2 and a horizontally arranged conveyor 5, the separation bin 2 spans above the conveyor 5, the lower end surface of the separation bin 2 abuts against the upper surface of the frame 4 in the conveyor 5, the separation bin 2 has a first direction and a second direction that are perpendicular and horizontal to each other, the separation bin 2 has a front side plate 201 and a rear side plate perpendicular to the first direction, the separation bin 2 also has a left side plate 202 and a right side plate perpendicular to the second direction; the top of the separation bin 2 is provided with an air intake pipe 8 extending along the first direction.

[0017] Two air inlet pipes 8 are provided, one on each side of the separation chamber 2's inner cavity along the second direction, near the left and right panels, respectively. A sufficient gap is left between the two air inlet pipes 8 to create a clearance space for the light waste to rise. More specifically, vertically, the projection of the light waste outlet does not overlap with the projections of the two air inlet pipes 8.

[0018] A row of air jets is provided on one side of the air inlet pipe 8 away from the center of the separation chamber 2 along the second direction. The openings of the air jets are arranged tilted downward and face the adjacent left or right plate. Each row of air jets 801 can be arranged in sequence along the first direction.

[0019] Specifically, the cross-section of the separation chamber 2 is square, and the length dimension of the separation chamber 2 along the first direction is greater than the width dimension along the second direction. The upper part of the separation chamber 2 has a deflector with an opening dimension that gradually decreases in the upward direction. The top of the deflector forms the above-mentioned lightweight outlet 10. The outer sleeve of the lightweight outlet 10 is provided with an exhaust pipe 1, and the exhaust pipe 1 is fixed to the lightweight outlet 10 by a clamp 9. In addition, the above-mentioned air intake pipe 8 is provided on the top of the rear side panel. One end of the air intake pipe 8 is blocked and the blocked end is inserted into the inner cavity of the separation chamber 2. The other end of the air intake pipe 8 is connected to the same air supply main pipe (not shown in the figure), and the air supply main pipe is connected to external air supply components (such as fans and air pumps).

[0020] More specifically, the plug end abuts against the front side plate or the rear side plate of the separation chamber 2. The cross section of the air inlet pipe 8 is square or circular.

[0021] The front side plate 201 is opposite to the feeding direction of the conveyor 5 , and an inlet is provided at the lower end of the front side plate 201 , and a heavy material outlet 6 is provided at the lower end of the rear side plate.

[0022] Specifically, the conveyor 5 passes through the inlet of the front side plate 201 and exits from the heavy outlet 6 of the rear side plate. This arrangement allows the inlet and outlet to allow light and heavy garbage of a certain height to enter and exit the inner cavity of the separation bin 2 as the conveyor 5 is transported.

[0023] Specifically, the conveyor 5 here is a belt conveyor, and the upper surface of the belt conveyor is directly opposite to the bottom end of the separation bin 2. In other structural arrangements, roller conveyors and other structures can also be used when the requirements for conveying the light and heavy garbage to be separated are met.

[0024] In this embodiment, the clamp 9 is used to connect the lightweight outlet 10 at the upper end of the separation chamber 2 to the exhaust pipe 1. The exhaust pipe 1 is connected to an external exhaust device. More specifically, the exhaust device is a fan or an air pump. More specifically, the external exhaust device can be connected to the fan or air pump at the air inlet pipe 88. That is, the fan or air pump draws air from the separation chamber 2 via the exhaust pipe 1 and then delivers air to the separation chamber 2 via the air inlet pipe 88, thereby achieving gas circulation in the separation chamber 2.

[0025] In this embodiment, the frame 4 is provided with vertical side edges 3 on either side along the second direction, and the vertical side edges 3 extend along the first direction. This arrangement facilitates the use of the vertical side edges 3 to limit the position of the separation chamber 2 along the second direction, thereby achieving a secure connection of the separation chamber 2. Furthermore, the vertical side edges 3 facilitate enhancing the airtightness between the bottom of the separation chamber 2 and the frame 4, reducing the probability of gas escaping from the bottom of the separation chamber 2.

[0026] In this embodiment, vertical blocking pieces 7 are installed at the gaps between the inlet and heavy-waste outlet. The upper end of the blocking piece 7 is rotatably connected to the separation bin 2, while the lower end is suspended above the conveyor 5. This arrangement utilizes the blocking piece 7 to reduce the probability of airflow escaping from the inlet and heavy-waste outlet 6, while ensuring that both light and heavy waste can enter and exit the separation bin 2. Preferably, the upper end of the blocking piece 7 is rotatably connected to the separation bin 2 via a rotating shaft extending along the second direction.

[0027] Working Principle: During use, the two air inlet pipes 8 inject downwardly slanted airflow toward the adjacent left and right panels through their respective air jets 801. The downwardly slanted airflow flows downward along the inner walls of the left and right panels, and the airflow is prevented from escaping in other directions due to the Coanda effect.

[0028] When the airflow reaches the bottom of the separation bin 2, because the air pressure in the middle of the separation bin 2 is low, the airflow will first flow toward the center of the bottom of the separation bin 2, and then flow upward toward the light-weight outlet 10. During the flow of the airflow, the light-weight waste rises with the airflow and passes through the escape space 11. The light-weight waste is finally discharged from the light-weight outlet 11, and the heavy-weight waste is discharged along the conveyor along the heavy-weight outlet 6.

[0029] Of course, the present invention is not limited to the above embodiments. Those skilled in the art can make various combinations and modifications to the above embodiments of the present invention under the guidance of the present invention without departing from the scope of the present invention.

Claims

1. A light and heavy garbage separation device based on the Coanda effect, characterized in that: The utility model comprises a separation bin and a horizontally arranged conveyor, wherein the separation bin spans above the conveyor, the lower end surface of the separation bin abuts against the upper surface of the frame in the conveyor, the separation bin has a first direction and a second direction which are perpendicular to each other and horizontal, the separation bin has a front side plate and a rear side plate which are perpendicular to the first direction, and the separation bin also has a left side plate and a right side plate which are perpendicular to the second direction; an air intake pipe extending along the first direction is provided on the top of the separation bin; the number of the air intake pipes is two, and the two air intake pipes are arranged on both sides of the inner cavity of the separation bin along the second direction and are respectively arranged close to the left side plate and the right side plate; A row of air jets is provided on the side of the air inlet pipe away from the center of the separation bin along the second direction, and the openings of the air jets are arranged tilted downward, and the air jets are directed toward the adjacent left plate or right plate; the front side plate is opposite to the feeding direction of the conveyor, the lower end of the front side plate is provided with an inlet, and the lower end of the rear side plate is provided with a heavy outlet; the top of the separation bin is provided with a light outlet.

2. The light and heavy garbage separation equipment based on the Coanda effect according to claim 1 is characterized in that: In the vertical direction, the projection of the lightweight outlet does not overlap with the projections of the two air intake pipes.

3. The light and heavy garbage separation equipment based on the Coanda effect according to claim 1 is characterized in that: The cross section of the air intake pipe is square or circular.

4. The light and heavy garbage separation equipment based on the Coanda effect according to claim 1 is characterized in that: One end of the air inlet pipe is blocked to form a blocked end, which is inserted into the inner cavity of the separation chamber along the first direction and abuts against the front side plate or the rear side plate. The other ends of the two air inlet pipes extend out of the separation chamber and are connected to the same air supply main pipe.

5. The light and heavy garbage separation equipment based on the Coanda effect according to claim 1 is characterized in that: The upper end of the separation bin is provided with a clamping hoop, which is used to connect the lightweight outlet at the upper end of the separation bin and an exhaust pipe, and the exhaust pipe is connected to an external exhaust device.

6. The light and heavy garbage separation equipment based on the Coanda effect according to claim 5 is characterized in that: The air extraction equipment is a fan or an air pump.

7. The light and heavy garbage separation equipment based on the Coanda effect according to claim 1 is characterized in that: The frame is provided with vertical side edges on both sides along the second direction, and the vertical side edges extend along the first direction.

8. The light and heavy garbage separation equipment based on the Coanda effect according to claim 1 is characterized in that: A vertical blocking piece is provided at the gap between the inlet and the heavy-weight outlet; the upper end of the blocking piece is rotatably connected to the separation bin, and the lower end is suspended above the conveyor.

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