Screening device for biomass material processing

Abstract

The utility model relates to the technical field of biomass material processing, and discloses a screening device for biomass material processing, which comprises a screening box, the side wall of the screening box is communicated with a feed pipe, the interior of the screening box is connected with a screen in a sliding manner, a plurality of vibrators are fixed on the inner side of the screening box, and the feed pipe is communicated with the feed pipe. A vibrator is arranged in the screening box, the output end of the vibrator is connected with the bottom of the screening net, a plurality of vertical needles are arranged below the screening net, the size of the vertical needles is matched with the size of meshes in the screening net, a driving assembly used for driving the vertical needles to move is arranged in the screening box, and a turn-over assembly and a cleaning assembly are further arranged in the screening box. According to the screening device for biomass material processing, blockages on the screen can be effectively cleaned, the situation that meshes of biomass materials are blocked in the screening process is prevented, the screening efficiency is improved, the biomass materials on the screen can turn over and move, and the screening effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of biomass material processing, in particular to a screening device for biomass material processing. Background Art

[0002] Screening devices used in biomass material processing are usually designed to classify or separate biomass materials according to different sizes or textures. The design of these devices can be optimized according to the specific requirements of the processing and the characteristics of the material. Common devices include vibrating screens, drum screens, cyclone screens, etc.

[0003] After searching, a biomass powder screening mechanism with a publication number of CN208960337U is found, which includes a screening chamber and a screen plate. Both sides of the top of the inner cavity of the screening chamber are provided with hanging rings, and screen plate ropes are hung on the hanging rings. A feed port is provided on the top of the screening chamber at the higher end of the screen plate, and a coarse material drop-off port is reserved between the lower end of the screen plate and the side wall of the screening chamber. A fine material guide plate is obliquely installed in the screening chamber below the screen plate, and the lower end of the fine material guide plate passes through the screening chamber to form a fine material outlet, and a material guide conveyor belt is connected to the fine material outlet. A coarse material screening plate is fixed in the screening chamber below the coarse material drop-off port, and a coarse material guide outlet is opened on the side wall of the screening chamber at one end of the coarse material screening plate, and a medium material outlet slot is provided at the bottom of the screening chamber. The scheme has a reasonable structure and a good screening effect. However, the above technical scheme still has the following shortcomings when it is actually used:

[0004] Biomass materials include wood and lignocellulosic materials, straw and rice husks, discarded wood materials and pulp waste, etc. The surface of these materials is relatively rough after crushing, and the friction with the screen is relatively large. Due to the vibration of the screen, larger biomass materials are easily blocked in the mesh holes, and smaller materials are difficult to pass through the mesh holes, which reduces the screening efficiency. This will increase the time and energy consumption in industrial production and may lead to a decrease in production efficiency. Secondly, the particle size distribution of the biomass materials after screening is uneven, and the screening accuracy is poor.

[0005] Therefore, it is necessary to design a screening device for biomass material processing to solve the above problems. Utility Model Content

[0006] The utility model aims to solve the shortcomings in the prior art and proposes a screening device for biomass material processing.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A screening device for processing biomass materials comprises a screening box, a side wall of the screening box is connected to a feed pipe, a screen is slidably connected inside the screening box, a plurality of vibrators are fixed on the inner side of the screening box, the output ends of the vibrators are connected to the bottom of the screen, a plurality of vertical needles are arranged below the screen, the size of the vertical needles is matched with the mesh size on the screen, a driving assembly for driving the vertical needles to move is arranged inside the screening box, and a flipping assembly and a cleaning assembly are also arranged inside the screening box.

[0009] As a preferred technical solution of the utility model, the driving assembly includes an electric telescopic rod fixedly connected to the bottom surface of the screening box, the telescopic end of the electric telescopic rod is fixedly connected to a movable plate, the vertical needle is fixed to the movable plate, the interior of the movable plate is hollow, the vertical needle is a cylindrical structure, and the two ends of the vertical needle are open, and the vertical needle is connected to the interior of the movable plate.

[0010] As a preferred technical solution of the utility model, the flip assembly includes a sleeve fixedly connected to the bottom surface of the screening box, the internal sealing and sliding connection of the sleeve is a slide plate, a slide rod is fixed on the slide plate, the end of the slide rod away from the slide plate is fixed to the movable plate, and the side wall of the sleeve is connected to an air outlet pipe 1, and the air outlet pipe 1 is connected to the interior of the movable plate.

[0011] As an optimal technical solution of the utility model, the cleaning assembly includes a connecting cover arranged on the screening box, the connecting cover is arranged opposite to the feed pipe, the connecting cover is connected with a cleaning pipe, the side wall of the screening box is fixed with a filter box, the cleaning pipe is connected with the filter box, the side wall of the sleeve is connected with a drive pipe 1 and a drive pipe 2, the drive pipe 1 and the drive pipe 2 are respectively located at two ends of the sleeve, the filter box is connected with a connecting pipe, the drive pipe 1 and the drive pipe 2 are both connected with the connecting pipe, the side wall of the sleeve is also connected with an air outlet pipe 2, the air outlet pipe 1 and the air outlet pipe 2 are respectively located at two ends of the sleeve, the air outlet pipe 1 and the air outlet pipe 2 are both provided with a one-way valve 1, the drive pipe 1 and the drive pipe 2 are both provided with a one-way valve 2, and the one-way valve 1 and the one-way valve 2 have opposite flow limiting directions.

[0012] As a preferred technical solution of the present invention, the screen is arranged obliquely, and the movable plate is arranged parallel to the screen.

[0013] As a preferred technical solution of the utility model, the vertical needle is made of elastic rubber.

[0014] The utility model has the following beneficial effects:

[0015] 1. Prevent the screen from being blocked: By using the combination of electric telescopic rod and vertical needle, the upward movement of the vertical needle can push the material in the mesh of the screen upward, which can effectively clean the blockage on the screen, prevent the biomass material from blocking the mesh during the screening process, and improve the screening efficiency;

[0016] 2. Improve the screening effect: By moving the vertical needle upward, the biomass material on the screen can be turned over and displaced to ensure the mutual influence between the upper and lower layers of materials. At the same time, the combination of the slide plate and air injection can achieve the turning and mixing of the materials, improve the screening efficiency and screening quality, thereby ensuring the screening effect, which helps to prevent larger materials from blocking smaller materials;

[0017] 3. Air pollution prevention and control: Through the movement of the slide plate and its combination with the filter box, it can continuously and effectively prevent the powdered material from flying during feeding, thus preventing the health of the workers from being affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of a screening device for biomass material processing proposed by the utility model;

[0019] Figure 2 for Figure 1 A magnified view of the structure at A;

[0020] Figure 3 It is a schematic diagram of the structure of the electric telescopic rod, sleeve and movable plate;

[0021] Figure 4 It is a schematic diagram of the cross-sectional structure of the vertical needle and the moving plate;

[0022] Figure 5 Schematic diagram of the internal structure of the sleeve.

[0023] In the figure: 1 screening box, 2 feeding pipe, 3 screen, 4 vibrator, 5 moving plate, 6 vertical needle, 7 electric telescopic rod, 8 sleeve, 9 sliding rod, 10 sliding plate, 11 outlet pipe 1, 12 driving pipe 1, 13 driving pipe 2, 14 connecting pipe, 15 outlet pipe 2, 16 one-way valve 1, 17 one-way valve 2, 18 filter box, 19 cleaning pipe, 20 connecting cover. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] Reference Figure 1-5A screening device for processing biomass materials comprises a screening box 1, a side wall of the screening box 1 is connected to a feed pipe 2, a screen 3 is slidably connected inside the screening box 1, a plurality of vibrators 4 are fixed on the inner side of the screening box 1, and the output end of the vibrator 4 is connected to the bottom of the screen 3, and the vibrator 4 can drive the screen 3 to vibrate up and down. The internal structure and working principle of the device are both prior art and are not the innovation points of the present utility model, so no further elaboration is made here. A plurality of vertical needles 6 are arranged under the screen 3, and the size of the vertical needles 6 is matched with the mesh size of the screen 3. The upward movement of the vertical needles 6 can push out the material blocked in the mesh of the screen 3 to prevent the screen 3 from being blocked, thereby ensuring the screening efficiency. A driving component for driving the vertical needles 6 to move is arranged inside the screening box 1, and a flipping component and a cleaning component are also arranged inside the screening box 1.

[0026] Reference Figure 3 and Figure 4 The driving assembly includes an electric telescopic rod 7 fixedly connected to the bottom surface of the screening box 1, and the telescopic end of the electric telescopic rod 7 is fixedly connected to the movable plate 5. The vertical needle 6 is fixed to the movable plate 5. The interior of the movable plate 5 is hollow, and the vertical needle 6 is a cylindrical structure, and both ends of the vertical needle 6 are open. The vertical needle 6 is connected to the interior of the movable plate 5. The movement of the vertical needle 6 is achieved by driving the electric telescopic rod 7 without manual operation, which reduces the workload of the staff and reduces labor costs.

[0027] Reference Figure 3 and Figure 5 The turning assembly includes a sleeve 8 fixedly connected to the bottom surface of the screening box 1, and the internal sealing sliding connection of the sleeve 8 is connected to a slide plate 10, and a slide rod 9 is fixed on the slide plate 10. The end of the slide rod 9 away from the slide plate 10 is fixed to the movable plate 5, and the side wall of the sleeve 8 is connected to an air outlet pipe 11, and the air outlet pipe 11 is connected to the interior of the movable plate 5. During the upward movement of the vertical needle 6, air can be ejected through one end of the vertical needle 6. On the one hand, it can generate a thrust for the material blocked in the mesh of the screen 3 to further prevent the blockage of the screen 3. On the other hand, it can play a role in mixing and turning over the biomass material, so that the position of the material changes, so that the material accumulated on the upper layer can move down and contact the screen 3, thereby improving the screening efficiency.

[0028] Reference Figure 1 and Figure 5The cleaning assembly includes a connecting cover 20 arranged on the screening box 1, the connecting cover 20 is arranged opposite to the feed pipe 2, a cleaning pipe 19 is connected to the connecting cover 20, a filter box 18 is fixed to the side wall of the screening box 1, the cleaning pipe 19 is connected to the filter box 18, a driving pipe 12 and a driving pipe 2 13 are connected to the side wall of the sleeve 8, the driving pipe 12 and the driving pipe 2 13 are respectively located at the two ends of the sleeve 8, a connecting pipe 14 is connected to the filter box 18, the driving pipe 12 and the driving pipe 2 13 are both connected to the connecting pipe 14, the side wall of the sleeve 8 is also connected to an air outlet pipe 2 15, the air outlet pipe 11 and the air outlet pipe 2 15 are respectively located at the two ends of the sleeve 8, and the air outlet pipe 11 and the air outlet pipe 2 15 are A one-way valve 16 is provided, and a one-way valve 2 17 is provided on the driving pipe 12 and the driving pipe 2 13. The one-way valve 16 and the one-way valve 2 17 have opposite flow limiting directions. Under the action of the one-way valve 16 and the one-way valve 2 17, when the slide plate 10 moves up, the air can only be discharged through the air outlet pipe 11, and the external air enters from the driving pipe 2 13. When the slide plate 10 moves down, the air can be discharged through the air outlet pipe 2 15, and the external air enters through the driving pipe 1 12. In this way, under the action of the driving pipe 12 and the driving pipe 2 13, the slide plate 10 can continuously suck the air with powder material at the feed pipe 2 into the filter box 18, so as to realize the recovery of the powder material and prevent the powder from floating and affecting the health of the staff.

[0029] Reference Figure 1 The screen 3 is inclined and the movable plate 5 is parallel to the screen 3, so that the larger material can slide along the inclined screen 3 to the discharge port, and the material passing through the screen 3 falls on the movable plate 5 and then slides to the lowest end of the movable plate 5, which is convenient for the staff to collect the screened material.

[0030] Reference Figure 2 The vertical needles 6 are made of elastic rubber, so that the vertical needles 6 will not cause wear to the mesh of the screen 3, thereby extending the service life of the device, and will not pierce the biomass material.

[0031] The specific working principle of the utility model is as follows:

[0032] During screening, the staff pours the biomass material onto the screen 3 through the feed pipe 2, starts the vibrator 4, the screen 3 vibrates up and down, and starts the electric telescopic rod 7 at the same time. The telescopic end of the electric telescopic rod 7 extends to push the moving plate 5 upward, so that the moving plate 5 and the vertical needle 6 move upward. The vertical needle 6 can pass through the mesh holes on the screen 3, so that the material blocked in the mesh holes can be pushed out, and the blockage of the mesh holes can be prevented from affecting the screening efficiency. The upward movement of the vertical needle 6 can also turn the material on the screen 3 over, so that the material is displaced, and then the position of the upper material and the bottom material can be changed, so that the larger material at the bottom will not block the smaller material on the upper layer, so as to ensure the screening effect. With the reciprocating movement of the telescopic end of the electric telescopic rod 7, the vertical needle 6 can intermittently clean the mesh holes;

[0033] Furthermore, in the above process, the telescopic end of the electric telescopic rod 7 and the upward movement of the movable plate 5 can simultaneously drive the slide bar 9 to move upward, so that the slide plate 10 moves upward, and the slide plate 10 can squeeze the air above the slide plate 10 into the air outlet pipe 11, so that the air is ejected from the vertical needle 6, which further plays the role of turning over and mixing the material, thereby improving the screening efficiency and screening quality of the device;

[0034] In addition, the upward movement of the slide plate 10 causes a negative pressure state to appear at the bottom of the slide plate 10, thereby sucking the powdered material at the feed pipe 2 into the connecting cover 20, and then these debris will enter the filter box 18 through the cleaning pipe 19, and the filtered air can enter the sleeve 8 through the driving pipe 13. Conversely, when the slide plate 10 moves downward, the air at the bottom of the slide plate 10 can be discharged through the exhaust pipe 15, and a negative pressure state appears above the slide plate 10, so that the air carrying debris on the feed pipe 2 will also be sucked into the filter box 18, and the filtered air enters the sleeve 8 through the driving pipe 12. Repeat this step, the reciprocating movement of the telescopic end of the electric telescopic rod 7 can drive the slide plate 10 to move back and forth, so that the debris at the feed pipe 2 is continuously sucked into the filter box 18, which effectively prevents the powdered material from flying during feeding and affecting the health of the staff, and prevents air pollution.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A screening device for biomass material processing, comprising a screening box (1), wherein a feed pipe (2) is connected to the side wall of the screening box (1), characterized in that: The screen (3) is slidably connected to the interior of the screening box (1), a plurality of vibrators (4) are fixed to the inner side of the screening box (1), the output end of the vibrator (4) is connected to the bottom of the screen (3), a plurality of vertical needles (6) are arranged below the screen (3), the size of the vertical needles (6) is matched with the size of the mesh on the screen (3), a driving component for driving the vertical needles (6) to move is arranged inside the screening box (1), and a turning component and a cleaning component are also arranged inside the screening box (1).

2. A screening device for biomass material processing according to claim 1, characterized in that: The driving assembly comprises an electric telescopic rod (7) fixedly connected to the inner bottom surface of the screening box (1); the telescopic end of the electric telescopic rod (7) is fixedly connected to a movable plate (5); the vertical needle (6) is fixed to the movable plate (5); the interior of the movable plate (5) is hollow; the vertical needle (6) is a cylindrical structure; and both ends of the vertical needle (6) are open; the vertical needle (6) is connected to the interior of the movable plate (5).

3. A screening device for biomass material processing according to claim 2, characterized in that: The turning assembly comprises a sleeve (8) fixedly connected to the inner bottom surface of the screening box (1); the interior of the sleeve (8) is sealed and slidably connected to a slide plate (10); a slide bar (9) is fixed to the slide plate (10); an end of the slide bar (9) away from the slide plate (10) is fixed to the movable plate (5); a side wall of the sleeve (8) is connected to an air outlet pipe (11); and the air outlet pipe (11) is connected to the interior of the movable plate (5).

4. A screening device for biomass material processing according to claim 3, characterized in that: The cleaning assembly comprises a connecting cover (20) arranged on the screening box (1), the connecting cover (20) being arranged opposite to the feed pipe (2), a cleaning pipe (19) being connected to the connecting cover (20), a filter box (18) being fixed to the side wall of the screening box (1), the cleaning pipe (19) being connected to the filter box (18), a driving pipe 1 (12) and a driving pipe 2 (13) being connected to the side wall of the sleeve (8), the driving pipe 1 (12) and the driving pipe 2 (13) being respectively located at two ends of the sleeve (8), and the filter box (18) being connected to the connecting cover (20). A connecting pipe (14) is provided, and the driving pipe 1 (12) and the driving pipe 2 (13) are both connected to the connecting pipe (14). The side wall of the sleeve (8) is also connected to an air outlet pipe 2 (15). The air outlet pipe 1 (11) and the air outlet pipe 2 (15) are respectively located at two ends of the sleeve (8). The air outlet pipe 1 (11) and the air outlet pipe 2 (15) are both provided with a one-way valve 1 (16). The driving pipe 1 (12) and the driving pipe 2 (13) are both provided with a one-way valve 2 (17). The one-way valve 1 (16) and the one-way valve 2 (17) have opposite flow limiting directions.

5. A screening device for biomass material processing according to claim 2, characterized in that: The screen (3) is arranged in an inclined manner, and the movable plate (5) is arranged parallel to the screen (3).

6. A screening device for biomass material processing according to claim 1, characterized in that: The vertical needle (6) is made of elastic rubber.

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