Unpowered winnowing device

Abstract

The utility model discloses an unpowered winnowing device which comprises a winnowing box body, and a feeding port, an air suction port, an air inlet, an air supplementing port, a discharging port and a manhole are formed in the winnowing box body. Sealing connecting mechanisms are arranged on the feeding hole and the discharging hole and are used for sealing and connecting a plurality of winnowing devices end to end; a powder selecting adjusting mechanism is detachably arranged on the air suction opening. The air inlet and the air supplementing opening are each provided with an air inlet adjusting mechanism used for controlling the air inlet amount. Due to the fact that the sealing connecting mechanisms are arranged on the material inlet and the material outlet, the balance frame ensures that the two air separators stacked up and down stably abut against each other during multi-stage powder separation, the sealing effect is ensured under the action of the sealing strip, the powder separation effect is effectively improved, and pollution caused by leakage of internal dust is prevented.

Description

Technical Field

[0001] This utility model relates to the field of wind separator technology, and in particular to a non-powered wind separator. Background Technology

[0002] A non-powered air separator is a device that separates materials using airflow without requiring external power input. It is mainly used in industries such as ore processing, coal handling, and chemicals to separate fine powder from other particles in a mixture.

[0003] However, traditional non-powered wind separators still have the following drawbacks in practical use:

[0004] 1. When multiple air classifiers of the same specifications are connected end to end to complete a multi-stage powder classification process, the poor sealing effect at the connection between the two air classifiers not only easily leads to a decrease in internal negative pressure, affecting the powder classification effect, but also easily causes internal dust to leak out, thus causing pollution.

[0005] 2. In order to control the powder content in the material after air separation, the baffle plate inside the air separator is often set to swing to adjust its tilt angle. However, under the long-term impact of the material vortex flow, its service life is easily shortened, resulting in damage to parts and affecting its use. Utility Model Content

[0006] The purpose of this invention is to solve the problems in the background art mentioned above and to provide a non-powered wind separator.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] This utility model provides a non-powered wind separator, including

[0009] The air classifier box is provided with a feed inlet, a suction inlet, an air inlet, a make-up air inlet, a discharge outlet, and a manhole.

[0010] Both the inlet and outlet are equipped with sealing connection mechanisms for sealing and connecting multiple air separators end to end.

[0011] The air intake is detachably equipped with a powder selection and adjustment mechanism;

[0012] Both the air inlet and the make-up air inlet are equipped with an air intake adjustment mechanism to control the air intake volume.

[0013] Furthermore, an inclined throwing plate is fixed below the feed inlet.

[0014] Furthermore, the sealing connection mechanism includes a connecting frame, on which a first sealing layer is provided;

[0015] The first sealing layer includes a balance frame fixed to the connecting frame, and a sealing strip is provided around the outside of the balance frame.

[0016] Furthermore, the outer end of the sealing strip is inclined, and the contact surface of the sealing strip is located above the balance frame.

[0017] Furthermore, the powder selection adjustment mechanism includes an installation frame, which is installed on the air classifier body through the installation port and fixed by bolts. Several inclined sand baffles are fixed inside the installation frame to prevent the material from being sucked away by the negative pressure at the air intake.

[0018] Furthermore, the air intake adjustment mechanism includes a baffle plate, which is rotatably mounted via a rotating shaft; one end of the rotating shaft is located on the outside of the air separator and is connected to a swing arm for opening and closing the baffle plate by swinging; one end of the swing arm is provided with a screw; an arc-shaped frame is slidably mounted on the screw; the arc-shaped frame is fixed to the outer wall of the air separator; a nut is threaded onto the screw for pressing the swing arm and the arc-shaped frame together.

[0019] The beneficial effects of this utility model are:

[0020] 1. By setting a sealing connection mechanism at both the inlet and outlet, the balance frame ensures stable contact between the two stacked air classifiers during multi-stage powder selection, and the sealing strip also ensures a sealing effect, effectively improving the powder selection effect and preventing internal dust leakage and pollution.

[0021] 2. By setting a detachable powder selection adjustment mechanism, the powder content in the material can be controlled by replacing different models (with different spacing and tilt angles between the sand baffles) of the integrated structure, thus avoiding the problem of short service life of movable connection structures. Attached Figure Description

[0022] Figure 1 A schematic diagram of the structure of a non-powered air separator provided by this utility model;

[0023] Figure 2 An exploded view of a non-powered air separator provided by this utility model;

[0024] Figure 3 for Figure 1 The front view;

[0025] Figure 4 for Figure 3 Internal structural sectional view;

[0026] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0027] In the diagram, 1. Air classifier box; 11. Vortex air chamber; 2. Feed inlet; 21. Sealing connection mechanism; 211. Connecting frame; 212. First sealing layer; 2121. Balance frame; 2122. Sealing strip; 22. Throwing plate; 3. Air intake; 31. Powder classifier adjustment mechanism; 311. Sand baffle; 312. Mounting frame; 3121. Second sealing layer; 3122. Bolt; 32. Mounting port; 4. Air inlet; 41. Air duct; 42. Air intake adjustment mechanism; 421. Baffle; 422. Rotating shaft; 423. Swing arm; 424. Screw; 425. Arc frame; 426. Nut; 5. Make-up air inlet; 6. Discharge port; 7. Manhole; 71. Manhole cover; 711. Fastening mechanism. Detailed Implementation

[0028] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0029] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0030] Example

[0031] like Figures 1-5 As shown

[0032] A non-powered wind separator, including

[0033] Specifically, the air classifier 1 is designed to extend in width to ensure that the fed mixture is spread out as evenly as possible. Furthermore, to provide space for the formation and operation of the vortex airflow, the left half of the air classifier 1 is an arc-shaped vortex air chamber 11. Further, an inlet 2 is provided at the center of the top of the air classifier 1, and an outlet 6 is provided at the center of the bottom of the air classifier 1. Preferably, to ensure that the falling mixture is spread out as much as possible to increase the separation rate, a left-low, right-high inclined structure is fixed directly below the inlet 2. The material throwing plate 22 is placed; furthermore, in order to solve the problem of poor sealing effect at the connection between multiple air classifiers of the same specification when they are connected end to end to complete a multi-stage powder classification process, preferably, a sealing connection mechanism 21 is provided on both the inlet 2 and the outlet 3; specifically, the sealing connection mechanism 21 includes a connecting frame 211 provided on the inlet 2 or the outlet 3, and a first sealing layer 212 is provided on the connecting frame 211; furthermore, the first sealing layer 212 includes a balance frame 2 fixed on the connecting frame 211. 121. To improve the sealing effect, the shape of the balance frame 2121 is equidistant from that of the connecting frame 211, and the connecting frame 211 has an extension around its periphery. A sealing strip 2122 is provided around the outside of the balance frame 2121 on the extension. The inner side and bottom of the sealing strip 2122 are fitted to the balance frame 2121 and the connecting frame 211. Through this design, the sealing strip 2122 can achieve a sealing effect by compression deformation, and the rigid balance plate 2121 can prevent the two connecting frames 211 from abutting. Excessive filling of the gap with flexible material can lead to unstable contact, ensuring safety in subsequent use. Furthermore, to achieve a sealing effect through the compression deformation of the two sealing strips 2122, the contact surface of the sealing strip 2122 is positioned above the balance frame 2121, slightly protruding. Even further, to ensure that the deformation extension direction of the sealing strip 2122 during compression is outward, preventing it from extending into the contact gap and causing instability, the outer end of the sealing strip 2122 is sloped, with a lower outer edge and a higher inner edge. In addition, during multi-stage powder selection, the two connecting frames 211 on the two overlapping inlet ports 2 and outlet ports 3 of this device are fixedly connected by bolts.

[0034] This solution effectively improves powder selection and prevents internal dust leakage that could cause pollution.

[0035] To create negative pressure inside the air classifier 1, an air intake 3 is provided on the top right side of the air classifier 1 for connection with external dust collection equipment. In order to control the powder content in the material after air classification and to solve the problem of short service life of the movable connection structure, a powder classification adjustment mechanism 31 is detachably provided on the air intake 3. Specifically, the powder classification adjustment mechanism 31 includes a mounting frame 312, which is installed on the air classifier 1 through a mounting port 32 opened on the front side wall of the air classifier 1 and fixed by bolts 3122. Several sand baffles 311 are integrally formed and fixed inside the mounting frame 312, arranged vertically and inclined with the left side lower than the right side, to prevent the material from being sucked away by the negative pressure at the air intake 3. Furthermore, in order to ensure that the internal operation is not affected, the front side plate of the mounting frame 312 is abutted against the front side wall of the air classifier box 1 by the second sealing layer 3121 and fixed by bolts 3122, and the rear side plate of the mounting frame 312 is also fixed to the rear side wall of the air classifier box 1 by bolts. After installation, several sand baffles 311 are arranged in line on the adsorption end of the air inlet 3.

[0036] This solution allows for the production of powder selection and adjustment mechanisms 31 of different specifications by setting different spacing and tilt angles of the sand baffles 311. Different models and specifications can be installed and replaced to control the powder content in the material. Furthermore, the one-piece molded fixed structure has a stronger load-bearing capacity during use, resulting in a longer service life and reduced operating costs.

[0037] Furthermore, to ensure the intake of external airflow, an air inlet 4 is provided on the right side of the air separator 1. The air inlet 4 supplies air to the bottom of the vortex chamber 11 and the bottom of the path of the mixed material through the air duct 41. Preferably, to reduce suction resistance, the air inlet 4 in this design can be horizontally set, and the air duct 41 and the air inlet 4 are smoothly connected. At the same time, to further ensure sufficient airflow to the outside, a makeup air inlet 5 is provided at the bottom of the vortex chamber 11. Preferably, to control the intake airflow, both the air inlet 4 and the makeup air inlet 5 are equipped with an air intake adjustment mechanism 42. Specifically, the air intake adjustment mechanism 42... 2 includes a baffle 421 disposed on the air inlet 4 or the make-up air inlet 5. The baffle 421 is rotatably disposed on the front and rear side walls of the air classifier box 1 via a rotating shaft 422. The front end of the rotating shaft 422 passes through the front outer side of the air classifier box 1 and is fixedly connected to a swing arm 423 for opening and closing the baffle 421 by swinging. One end of the swing arm 423 is vertically fixed with a screw 424. An arc frame 425 is slidably mounted on the screw 424. The arc frame 425 is fixed on the outer wall of the air classifier box 1. A nut 426 is threaded onto the screw 424 for pressing the swing arm 423 and the arc frame 425 together.

[0038] With this solution, the tilt angle of the baffle 421 can be adjusted by swinging the swing arm 423, thereby controlling the amount of air intake. After fixing the swing arm 423, the tilt angle of the baffle 421 can be fixed, thus achieving a constant air intake.

[0039] Furthermore, for ease of maintenance and installation, a manhole 7 is provided on the front side wall of the air classifier 1. The manhole 7 is provided with a manhole cover 71 for opening and closing. The manhole cover 71 has a through hole fastening mechanism 711 that can seal and fasten it to ensure that it does not affect the internal operation of the air classifier 1. Preferably, the fastening mechanism 711 can be a fastening element, which is a conventional existing device and will not be described in detail here.

[0040] How this device works:

[0041] When single-stage air separation is required, before use, the device is vertically fixed on the sand separation tower. Then, according to the required sand content, a sand baffle (311) mounting frame 312 with a suitable tilt angle and spacing is selected, and the mounting frame 312 is inserted into the mounting opening 32. The operator passes through the manhole 7 and fixes the front and rear walls of the mounting frame 312 to the air separation box 1 with bolts 3122 respectively. After installation, the manhole cover 71 is closed and fastened with the fastening mechanism 711. Then, the swing arm 423 on the air inlet 4 and the make-up air outlet 5 is adjusted to a suitable position and fixed by tightening the nut 426, so that the air intake volume can be controlled. After the above steps are completed, the suction port is connected to the external dust collection equipment, and the receiving equipment below the discharge port 6 is installed in place.

[0042] After installation, when in use, start the external dust collection equipment. A vortex airflow is formed inside the air classifier 1. The mixed material is poured in from the feed inlet 2. The mixed material falls onto the throwing plate 22 and is scattered again. Under the action of the vortex airflow, the mixed material is swirled and flies away. The dust in the mixed material is sucked away by the negative pressure of the suction port 3. Large particles in the mixed material hit the inclined baffle plate 311 and fall down, and are discharged from the discharge port 6, thus obtaining the sorted target material.

[0043] When multi-stage air separation is required, the installation and separation steps of a single air separation box 1 are the same as above before use. The difference is that after installation, multiple air separation boxes 1 are vertically and side by side fixed on the sand separation tower, and their inlet and outlet ports are connected end to end in sequence through connecting frame 211 and bolts. After connection, the sealing strips 2122, which are deformed by mutual compression, form a sealing effect at the connection. After completion, the mixed material is fed into the inlet 2 of the top air separation box 1, and after separation, it is discharged from the outlet 6 (this is the first stage of separation) and falls into the inlet 2 of the second air separation box 1. After separation, it is discharged again, which is the second stage of separation. This process is repeated as needed to complete multi-stage separation and discharge from the outlet 6 at the bottom.

[0044] The above embodiments merely illustrate specific implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. An unpowered air classifier characterized by: Comprising The air separation box (1) is provided with a feeding port (2), a suction port (3), an air inlet (4), a air supplement port (5), a discharge port (6) and a manhole (7); The feeding port (2) and the discharge port (6) are provided with sealing connection mechanisms (21) for sealing connection between multiple air separators; The suction port (3) is detachably provided with a powder selection adjusting mechanism (31); The air inlet (4) and the air supplement port (5) are provided with air inlet adjusting mechanisms (42) for controlling the air inlet amount; The sealing connection mechanism (21) comprises a connecting frame (211), and the connecting frame (211) is provided with a first sealing layer (212); The first sealing layer (212) comprises a balance frame (2121) fixed on the connecting frame (211), and the outer side of the balance frame (2121) is surrounded by a sealing strip (2122); The outer side end of the sealing strip (2122) is inclined, and the abutting surface of the sealing strip (2122) is arranged above the balance frame (2121).

2. A passive air classifier according to claim 1, characterised in that: The feeding port (2) is fixed below the inclined throwing plate (22).

3. A passive air classifier according to claim 1, wherein: The powder selection adjusting mechanism (31) comprises a mounting frame (312) mounted on the air separation box (1) through a mounting port (32) and fixed by a bolt (3122), and a plurality of inclined sand blocking plates (311) are fixed in the mounting frame (312) for preventing the material from being sucked away by the negative pressure at the suction port (3).

4. A passive air classifier according to claim 1, characterized in that: The air inlet adjusting mechanism (42) comprises a baffle (421) rotatably arranged through a rotating shaft (422); one end of the rotating shaft (422) is arranged outside the air separation box (1) and connected with a swing arm (423) for opening and closing the baffle (421) by swinging; one end of the swing arm (423) is provided with a screw rod (424); an arc-shaped frame (425) is slidably arranged on the screw rod (424); the arc-shaped frame (425) is fixed on the outer wall of the air separation box (1); a nut (426) is threadedly arranged on the screw rod (424) for abutting the swing arm (423) and the arc-shaped frame (425).

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