Graded screening equipment for biomass particles

Abstract

The utility model relates to the field of biomass particles, in particular to graded screening equipment for biomass particles, which comprises a box body, discharge ports are arranged on the outer walls of two sides of the box body, a screening structure is mounted at the discharge port on one side of the inner wall of the box body, and support components are mounted at the bottoms of the outer walls of two sides of the box body. A conveying pipe is mounted on the outer wall of one side of the box body, and a spiral conveying shaft is rotationally connected to the center of the inner wall of the conveying pipe; an adding hopper is arranged on one side of the conveying pipe; the screening structure comprises connecting blocks installed at the four corners of the inner wall of the box body, springs installed on the outer walls of the tops of the connecting blocks and screens connected to the outer walls of the top ends of the springs. The supporting assembly comprises a supporting block installed on the outer wall of the box body, a buffering groove formed in the center of the outer wall of the bottom of the supporting block and a supporting leg slidably connected into the buffering groove. The gear-shifting spiral conveying shaft rotates behind the conveying motor, materials in the adding hopper are conveyed upwards to the top of the box body, and the materials fall down from the top of the box body, so that the materials are convenient to add.

Description

Technical Field

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

[0002] Biomass pellets are made by cold-forming and compacting pulverized biomass straw, forestry waste, and other raw materials using rollers and ring dies at room temperature. The resulting cylindrical pellets are a new, environmentally friendly energy source that replaces coal. The raw material density is generally 0.1-0.13t / m³, and the density of the formed pellets is 1.1-1.3t / m³, making them easy to store and transport, and significantly improving the combustion performance of biomass.

[0003] The pellets produced during the biomass pellet production process will contain some material fragments and broken particles. These particles are of different sizes, so they need to be screened. After screening, qualified and small-sized particles can be sold. However, when the current screening device is in use, a set of vibration motors are usually used to drive the entire device to vibrate, which makes the particles on the screen easily clogged. Utility Model Content

[0004] The purpose of this utility model is to address the above-mentioned problems and shortcomings and to propose a grading and screening device for biomass particles. The conveying motor is rear-adjusted to rotate the spiral conveying shaft to convey the material in the adding bucket upward to the top of the box body, and the material falls from the top of the box body, which is convenient for adding materials; the vibration generated by the second vibration motor is amplified by the spring and transmitted to the screen to screen the material, and the material intercepted by the screen falls from the discharge port at one end into the guide plate to facilitate screening; the box body is connected to the support legs through shock absorbers to facilitate support and maintain support stability.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A biomass particle grading and screening device comprises a box body, wherein both outer walls of the box body are provided with discharge ports, and a screening structure is installed on the inner wall of the box body at the discharge port on one side, support assemblies are installed at the bottom of both outer walls of the box body, and a conveying pipe is installed on one outer wall of the box body, and a spiral conveying shaft is rotatably connected to the center of the inner wall of the conveying pipe; an addition hopper is provided on one side of the conveying pipe;

[0007] The screening structure includes connecting blocks installed at the four corners of the inner wall of the box, springs installed on the outer wall of the top of the connecting blocks, and a screen connected to the outer wall of the top of the springs;

[0008] The support assembly includes a support block mounted on the outer wall of the box, a buffer groove provided at the center of the outer wall of the bottom of the support block, and a support leg slidably connected to the buffer groove;

[0009] According to the above scheme: the conveying motor is rear-shifted and the spiral conveying shaft rotates to convey the material in the adding hopper upward to the top of the box body, and the material falls from the top of the box body, making it easy to add material.

[0010] Preferably, a guide frame is installed on the inner wall of the box at the top of the screen, and the inner and outer walls of the top of the guide frame are inclined inward, and one end of the screen faces the discharge port.

[0011] Preferably, a guide plate is installed on the outer wall of the box at the bottom of the discharge port, and the guide plate is an inclined structure, and a second vibration motor is installed at one end of the outer wall of the screen;

[0012] According to the above scheme: the screen is connected to the connecting block through a spring, the vibration generated by the second vibration motor is amplified by the spring and transmitted to the screen, the screen shakes to screen the material, and the material intercepted by the screen falls into the guide plate from the discharge port at one end for easy screening.

[0013] Preferably, a vibration groove is provided at the bottom center of the box body, and a vibration motor is installed in the box body in the vibration groove.

[0014] Preferably, the bottom inner wall of the box body is an inclined structure, the bottom outer wall of the conveying pipe is installed with a conveying motor, and the output shaft of the conveying motor is connected to one end of the spiral conveying shaft.

[0015] Preferably, a sliding ring is welded to the outer wall of the top end of the support leg, and a rubber ring is sleeved on the outer wall of the sliding ring. The outer wall of the top end of the support leg and the sliding ring are slidably connected in the buffer groove of the support block.

[0016] Preferably, a shock absorber is installed at the center of the outer wall of the top end of the support leg, and the outer wall of the top end of the shock absorber is connected to the inner wall of the buffer groove of the support block;

[0017] According to the above solution: the box is connected to the support legs through shock absorbers to prevent vibration from being transmitted to the support legs, making it easier to support and maintain support stability.

[0018] Preferably, the vibration motor 1, the vibration motor 2 and the conveying motor are connected to a switch via a wire, and the switch is connected to a power supply via a wire.

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

[0020] 1. The conveying motor rotates after the gear adjustment screw conveying shaft, and the material in the adding hopper is conveyed upward to the top of the box body. The material falls from the top of the box body, making it easy to add materials;

[0021] 2. The screen is connected to the connecting block through a spring. The vibration generated by the second vibration motor is amplified by the spring and transmitted to the screen. The screen shakes to screen the material. The material intercepted by the screen falls from the discharge port at one end into the guide plate for easy screening.

[0022] 3. The box is connected to the support legs through shock absorbers to prevent vibration from being transmitted to the support legs, making it easier to support and maintain support stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of a biomass particle grading and screening device proposed in the present invention;

[0024] Figure 2 This is a schematic diagram of the overall side structure of a biomass particle grading and screening device proposed in the present invention;

[0025] Figure 3 This is a schematic diagram of the overall structure of a biomass particle classification and screening device proposed in the present invention;

[0026] Figure 4 This is a partially expanded structural schematic diagram of a biomass particle grading and screening device proposed in the present invention.

[0027] In the figure: 1 box body, 2 discharge port, 3 guide plate, 4 screening structure, 5 support assembly, 6 conveying pipe, 7 adding bucket, 8 conveying motor, 9 support block, 10 buffer tank, 11 support leg, 12 sliding ring, 13 shock absorber, 14 rubber ring, 15 vibration tank, 16 vibration motor 1, 17 connecting block, 18 spring, 19 screen, 20 guide frame, 21 vibration motor 2. DETAILED DESCRIPTION

[0028] 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 the embodiments.

[0029] Example 1:

[0030] Reference Figure 1-2 As shown, a biomass particle grading and screening device includes a box body 1, with discharge ports 2 formed on both sides of the outer wall of the box body 1, and a screening structure 4 installed on the inner wall of the box body 1 at the discharge port 2 on one side, a support assembly 5 installed at the bottom of both sides of the outer wall of the box body 1, and a conveying pipe 6 installed on one side of the outer wall of the box body 1, and a spiral conveying shaft rotatably connected to the center of the inner wall of the conveying pipe 6; an addition hopper 7 is provided on one side of the conveying pipe 6;

[0031] The screening structure 4 includes connecting blocks 17 installed at the four corners of the inner wall of the box body 1, springs 18 installed on the outer wall of the top of the connecting blocks 17, and a screen 19 connected to the outer wall of the top of the spring 18;

[0032] The support assembly 5 includes a support block 9 mounted on the outer wall of the box body 1, a buffer groove 10 provided at the center of the outer wall of the bottom of the support block 9, and a support leg 11 slidably connected to the buffer groove 10;

[0033] A vibration groove 15 is provided at the bottom center of the box body 1, and a vibration motor 16 is installed in the vibration groove 15 of the box body 1;

[0034] A sliding ring 12 is welded to the outer wall of the top of the support leg 11, and a rubber ring 14 is sleeved on the outer wall of the sliding ring 12. The outer wall of the top of the support leg 11 and the sliding ring 12 are slidably connected in the buffer groove 10 of the support block 9;

[0035] The shock absorber 13 at the top of the supporting leg 11 is connected to the buffer groove 10 of the supporting block 9, the sliding ring 12 at the top of the supporting leg 9 is slidably connected to the inner wall of the buffer groove 10, and the rubber ring 14 prevents friction noise. The shock absorber 13 reduces the vibration and prevents most of the vibration from being transmitted to the supporting leg 11 to ensure stability; the screens 19 on the inner wall of the box body 1 are all tilted and arranged at the discharge port 2 to facilitate vibration screening and guide discharge; the conveying motor 8 in the conveying pipe 6 conveys the added material from bottom to top to the top of the box body 1 to facilitate material conveying.

[0036] Example 2:

[0037] Reference Figure 1-4 As shown, a guide frame 20 is installed on the inner wall of the box body 1 at the top of the screen 19, and the inner and outer walls of the top of the guide frame 20 are inclined inward, and one end of the screen 19 is facing the discharge port 2;

[0038] The outer wall of the box body 1 is located at the bottom of the discharge port 2 and a guide plate 3 is installed, and the guide plate 3 is an inclined structure. A vibration motor 21 is installed at one end of the outer wall of the screen 19;

[0039] The outer wall of the box body 1 is located at the bottom of the discharge port 2 and a guide plate 3 is installed, and the guide plate 3 is an inclined structure. A vibration motor 21 is installed at one end of the outer wall of the screen 19;

[0040] The vibration motor 1 16, the vibration motor 2 21 and the conveying motor 8 are connected to a switch via a wire, and the switch is connected to a power supply via a wire;

[0041] After the vibration motor 16 in the vibration groove 15 at the bottom of the box body 1 is started, the vibration is transmitted to the entire box body 1, which is convenient for vibrating the screened material out from the guide plate 3, facilitating auxiliary discharge, and facilitating auxiliary screening; the screen 19 passes through the spring 18, and the spring 18 is installed in the connecting block 17. The vibration generated by the vibration motor 21 on the screen 19 is amplified by the spring 18, which is convenient for the screen 19 to be screened and easy to use; the screen 19 passes through the spring 18, and the spring 18 is installed in the connecting block 17. The vibration generated by the vibration motor 21 on the screen 19 is amplified by the spring 18, which is convenient for the screen 19 to be screened and easy to use; the guide frame 20 on the inner wall of the box body 1 prevents the material from falling from the edge of the screen 19 when falling, thereby maintaining the stability of the screen 19.

[0042] Working principle: When in use, pour the material to be screened into the adding bucket 7, start the conveying motor 8 and adjust the gear to rotate the spiral conveying shaft, and convey the material in the adding bucket 7 upward to the top of the box body 1. After the material falls from the top of the box body 1, it contacts the screen 19. The vibration motor 21 on the outer wall of the bottom of the screen 19 is started to drive the screen 19 to vibrate, and the screen 19 is connected to the connecting block 17 through the spring 18. The vibration generated by the vibration motor 21 is amplified by the spring 18 and transmitted to the screen 19. The screen 19 shakes to screen the material, and the screen The material intercepted by the net 19 falls into the guide plate 3 from the discharge port 2 at one end. After repeating the above process, the three groups of screens 19 fully screen the material. Finally, the remaining powder falls into the inner wall of the bottom of the box 1. After the vibration motor 16 is started, it drives the box 1 to vibrate as a whole, assisting in discharging the particles on the guide plate 3. The vibration vibrates the powder particles inside the box 1, which is convenient for collection and screening of the particles. The box 1 is connected to the support leg 11 through the shock absorber 13 to prevent the vibration from being transmitted to the support leg 11, which is convenient for support and maintains support stability.

[0043] The present invention is described in detail with reference to the examples of the exemplary embodiments. However, it will be understood by those skilled in the art that, without departing from the concept of the present invention, various modifications and variations can be made to the above-mentioned specific embodiments, and various combinations of the various technical features and structures proposed in the present invention can be made without exceeding the scope of protection of the present invention, which is determined by the appended claims. The foregoing description of the specific exemplary embodiments of the present invention is not intended to limit the present invention to the precise form disclosed, and it is obvious that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can implement and utilize the various different exemplary embodiments of the present invention and various different options and changes. The scope of the present invention is intended to be defined by the claims and their equivalents.

Claims

1. A biomass particle grading and screening device, comprising a box (1), characterized in that: The outer walls of both sides of the box body (1) are provided with discharge ports (2), and a screening structure (4) is installed at the discharge port (2) on one side of the inner wall of the box body (1), a support assembly (5) is installed at the bottom of the outer walls of both sides of the box body (1), and a conveying pipe (6) is installed on the outer wall of one side of the box body (1), and a spiral conveying shaft is rotatably connected to the center of the inner wall of the conveying pipe (6); an adding bucket (7) is provided on one side of the conveying pipe (6); The screening structure (4) comprises connecting blocks (17) installed at the four corners of the inner wall of the box (1), a spring (18) installed on the outer wall of the top of the connecting block (17), and a screen (19) connected to the outer wall of the top of the spring (18); The support assembly (5) comprises a support block (9) mounted on the outer wall of the box body (1), a buffer groove (10) provided at the center of the outer wall at the bottom of the support block (9), and a support leg (11) slidably connected to the buffer groove (10).

2. The biomass particle grading and screening device according to claim 1, characterized in that: A guide frame (20) is installed on the inner wall of the box (1) at the top of the screen (19), and the inner and outer walls of the top of the guide frame (20) are inclined inward, and one end of the screen (19) faces the discharge port (2).

3. The biomass particle grading and screening device according to claim 1, characterized in that: A guide plate (3) is installed on the outer wall of the box body (1) at the bottom of the discharge port (2), and the guide plate (3) is an inclined structure. A second vibration motor (21) is installed at one end of the outer wall of the screen (19).

4. The biomass particle grading and screening device according to claim 1, characterized in that: A vibration groove (15) is provided at the center of the bottom of the box body (1), and a vibration motor (16) is installed in the box body (1) in the vibration groove (15).

5. The biomass particle grading and screening device according to claim 1, characterized in that: The bottom inner wall of the box body (1) is an inclined structure, and a conveying motor (8) is installed on the bottom outer wall of the conveying pipe (6), and the output shaft of the conveying motor (8) is connected to one end of the spiral conveying shaft.

6. The biomass particle grading and screening device according to claim 1, characterized in that: A sliding ring (12) is welded to the outer wall of the top end of the support leg (11), and a rubber ring (14) is sleeved on the outer wall of the sliding ring (12). The outer wall of the top end of the support leg (11) and the sliding ring (12) are slidably connected in the buffer groove (10) of the support block (9).

7. The biomass particle grading and screening device according to claim 1, characterized in that: A shock absorber (13) is installed at the center of the outer wall of the top end of the support leg (11), and the outer wall of the top end of the shock absorber (13) is connected to the inner wall of the buffer groove (10) of the support block (9).

8. The biomass particle grading and screening device according to claim 4, characterized in that: The vibration motor 1 (16), the vibration motor 2 (21) and the conveying motor (8) are connected to a switch via a wire, and the switch is connected to a power source via a wire.

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