Sawdust screening equipment

Abstract

The utility model relates to sawdust screening equipment, which belongs to the technical field of screening, and comprises a screening hopper, the screening hopper comprises a material frame and inclined screens, a plurality of groups of screens are arranged in the material frame at intervals along the vertical direction, and the aperture of screen holes of the upper screen is larger than that of screen holes of the lower screen; the cleaning assembly is arranged between every two adjacent screen meshes and comprises a brush cylinder and bristles, the bristles are connected to the circumferential side wall of the brush cylinder, sliding grooves allowing the brush cylinder to move are formed in the two opposite side walls of the material frame correspondingly, and the length direction of the sliding grooves is consistent with the length direction of the material frame; and the bristles are in a state of being attached to the surface of the screen. By the adoption of the sawdust screening equipment, the working intensity of a worker for cleaning the screen is greatly relieved.

Description

Technical Field

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

[0002] Sawdust has many uses. It can be used as fuel, plant nutrients, etc. It is also a key raw material for particleboard production. The sawdust produced during wood processing is usually mixed with some impurities such as wood blocks and wood strips. If these impurities are used directly in the production of particleboard without being treated, they will directly affect the structural strength and appearance quality of the product. Therefore, before using sawdust, the staff needs to pre-treat it.

[0003] At present, screening equipment is usually used to screen the collected sawdust. The existing screening equipment generally includes a bracket, a screen and a vibrator. The screen is provided with multiple groups distributed up and down, and the screens are all in an inclined state. The aperture of the screen at the bottom is smaller than the aperture of the upper screen. The screen is connected to the bracket through a spring part. The vibrator is started to make the sawdust on the screen jump. Sawdust with different particle sizes falls onto different screens respectively, and the staff then collects the sawdust at the output ends of different screens.

[0004] With respect to the above-mentioned technology, sawdust jumps on the surface of the screen, and usually the sawdust gets stuck in the sieve holes of the screen, causing the screen to be blocked. In order to ensure the normal use of the screening equipment, the staff needs to clear the blocked sieve holes one by one, which seriously increases the workload of the staff. Therefore, the inventor invented a new type of sawdust screening equipment. Utility Model Content

[0005] The purpose of the utility model is to provide a sawdust screening device in view of the deficiencies in the above-mentioned prior art.

[0006] The utility model provides a sawdust screening device, which adopts the following technical solution:

[0007] include,

[0008] A screening hopper, the screening hopper comprising a material frame and an inclined screen, the screen being provided with multiple groups, the multiple groups of screens being arranged in the material frame at intervals along the vertical direction, the screen holes of the upper screen having a larger aperture than the screen holes of the lower screen;

[0009] A cleaning component is arranged between two groups of adjacent screens, and includes a brush cylinder and bristles, wherein the bristles are connected to the circumferential side walls of the brush cylinder, and the opposite side walls of the material frame are respectively provided with slide grooves for the brush cylinder to move, and the length direction of the slide grooves is consistent with the length direction of the material frame, and the bristles are in a state of being attached to the surface of the screen.

[0010] Preferably, a sliding block is slidably connected in the sliding groove, the end of the brush cylinder is rotatably connected to the sliding block, and the end of the brush cylinder is in a state of penetrating the sliding block.

[0011] Preferably, one end of the brush barrel in the length direction is rotatably connected to an air pipe, the end of the air pipe away from the brush barrel is connected to an air pump, a ventilation pipe is arranged on the circumferential side wall of the brush barrel, a through hole connected to the ventilation pipe is opened on the wall of the brush barrel, and multiple groups of ventilation pipes are arranged, and the multiple groups of ventilation pipes are evenly arranged on the brush barrel.

[0012] Preferably, the through hole wall is provided with threads, the ventilation pipe is threadedly connected to the through hole, and one end of the ventilation pipe away from the screen cylinder extends toward the screen.

[0013] Preferably, the material frame comprises a feeding end and a discharging end, and two opposite side walls of the feeding end of the material frame are respectively provided with placement grooves, and the placement grooves are connected to the sliding grooves.

[0014] Preferably, a storage cover is provided on the inner wall of the feeding end of the material frame, an opening is provided on the side of the storage cover facing the discharging end of the material frame, and a barrier curtain is provided on the top edge of the opening of the storage cover.

[0015] Preferably, a feed hopper is provided at the top of the feed end of the material frame, and a discharge hopper is provided at the output end of the material frame. There are multiple groups of discharge hoppers, and the multiple groups of discharge hoppers are respectively connected to the screen and the material frame.

[0016] Preferably, a bracket is provided at the bottom of the screening hopper, a shock absorber is connected between the bracket and the screening hopper, a force transmission plate is provided on the bottom wall of the screening hopper, and a vibrator is provided on the wall of the force transmission plate.

[0017] In summary, the utility model includes the following beneficial technical effects:

[0018] 1. A cleaning assembly is arranged between two adjacent groups of screens, wherein the cleaning assembly includes a brush barrel and bristles. Both ends of the brush barrel in the length direction are slidably connected in the slide groove, and the bristles are in contact with the screen. By repeatedly sliding the brush barrel, the bristles and the screen form friction, and part of the bristles extend into the screen holes of the screen, thereby quickly sweeping out the large-size sawdust blocked in the screen holes. In addition, the cleaning assembly can clean two adjacent groups of screens at the same time, reducing the workload of the staff.

[0019] 2. By setting the brush barrel to a hollow state, and connecting an air pipe to the end of the brush barrel, the other end of which is connected to an air pump, and providing a ventilation pipe on the circumferential side wall of the brush barrel, the air pump is started, and the gas in the brush barrel is sprayed from the ventilation pipe onto the screen to blow out the sawdust blocked in the screen holes, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a sawdust screening device provided by an embodiment of the utility model;

[0021] Figure 2 It is a partial cross-sectional structural schematic diagram of the screening hopper;

[0022] Figure 3 It is a schematic diagram of the cross-sectional structure of the cleaning component.

[0023] Explanation of the reference numerals: 1. bracket; 2. screening hopper; 21. material frame; 211. feed hopper; 212. discharge hopper; 213. slide; 214. slider; 215. placement slot; 216. storage cover; 217. curtain; 22. screen; 23. force transmission plate; 24. vibrator; 25. shock absorber; 3. cleaning component; 31. brush cylinder; 311. ventilation pipe; 32. bristles; 33. air pipe; 4. air pump. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1-3 The utility model is described in further detail.

[0025] The utility model discloses a sawdust screening device. Figure 1 and Figure 2 , including a bracket 1 and a screening hopper 2, the screening hopper 2 is fixedly installed on the top of the bracket 1, the screening hopper 2 includes a material frame 21 and a screen 22, wherein the screen 22 is provided with multiple groups, and the multiple groups of screens 22 are arranged in the material frame 21 at intervals along the vertical direction, the screens 22 are all in an inclined state, and the screen holes of the upper screen 22 are larger than the screen holes of the lower screen 22, the screening hopper 2 is provided with a cleaning component 3, and the cleaning component 3 is arranged between two adjacent groups of screens 22, The screen mesh 22 in this embodiment is preferably provided with two groups, that is, the cleaning assembly 3 in this embodiment is provided with one group; the material frame 21 includes a feed end and a discharge end, a feed hopper 211 is installed on the top of the feed end of the material frame 21, and a discharge hopper 212 is fixedly installed on the discharge end of the material frame 21. In this embodiment, three groups of discharge hoppers 212 are provided, two groups of discharge hoppers 212 are respectively installed on two groups of screen meshes 22, and another group of discharge hoppers 212 is installed at the output end of the material frame 21. A force transmission plate 23 is fixedly installed at the bottom of the screen hopper 2, a vibrator 24 is fixedly installed on the surface of the force transmission plate 23, and a shock absorber 25 is fixedly installed between the bracket 1 and the screen hopper 2.

[0026] Reference Figure 1 and Figure 2The cleaning component 3 includes a brush barrel 31 and bristles 32. The bristles 32 are fixedly connected to the circumferential side walls of the brush barrel 31. The opposite side walls of the material frame 21 are respectively provided with slide grooves 213 for the brush barrel 31 to move. The length direction of the slide groove 213 is consistent with the length direction of the material frame 21. The moving direction of the brush barrel 31 is consistent with the length direction of the material frame 21. In the process of the brush barrel 31 moving in the slide groove 213, the bristles 32 are in contact with the two adjacent groups of screens 22. When the slide groove 213 repeatedly moves the brush barrel 31, the bristles 32 on the brush barrel 31 clean the screen 22, thereby removing the sawdust that is blocked in the sieve holes of the screen 22.

[0027] Reference Figure 1 A slider 214 is slidably connected in the slide groove 213, and the end of the brush cylinder 31 is rotatably connected to the slider 214, and the end of the brush cylinder 31 is in a state of penetrating the slider 214. Under manual operation of the staff, the brush cylinder 31 can roll around the side of the screen 22, and the slider 214 guides the movement of the brush cylinder 31, making the movement process of the brush cylinder 31 smoother and more stable.

[0028] Reference Figure 2 and Figure 3 The brush barrel 31 is in a hollow state, and one end of the brush barrel 31 in the length direction is rotatably connected to the air pipe 33, that is, the end of the brush barrel 31 that passes through the slider 214 is connected to the air pipe 33, and the end of the air pipe 33 away from the brush barrel 31 is connected to the air pump 4. The circumferential side wall of the brush barrel 31 is equipped with a vent pipe 311, and the wall of the brush barrel 31 is provided with a through hole connected to the vent pipe 311. There are multiple groups of vent pipes 311, and the multiple groups of vent pipes 311 are evenly arranged on the brush barrel 31. When the air pump 4 is started, the gas in the brush barrel 31 is sprayed from the vent pipe 311 onto the screen 22 to blow out the sawdust blocked in the sieve holes of the screen 22, thereby improving the working efficiency.

[0029] Reference Figure 2 and Figure 3 One end of the vent pipe 311 away from the screen cylinder extends toward the screen 22 to shorten the distance between the vent pipe 311 and the screen 22. The through hole wall is provided with threads, and the vent pipe 311 is threadedly connected to the through hole, thereby facilitating the disassembly and assembly of the vent pipe 311 by the staff.

[0030] Reference Figure 1 and Figure 2The material frame 21 includes a feeding end and a discharging end. The opposite side walls of the feeding end of the material frame 21 are respectively provided with placement grooves 215, and the placement grooves 215 are connected with the slide grooves 213. If the cleaning component 3 is not needed to work, it can be slid to the placement grooves 215 to reduce the phenomenon that the cleaning component 3 blocks the sawdust under the screen; at the same time, the inner wall of the feeding end of the material frame 21 is fixedly connected with a storage cover 216, and the storage cover 216 has an opening facing the discharging end of the material frame 21, and the brush cylinder 31 can slide into the storage cover 216 along the slide groove 213. The setting of the storage cover 216 provides storage space for the brush cylinder 31.

[0031] Reference Figure 2 The storage cover 216 is located at the top edge of the opening and is fixedly connected with a curtain 217. In the natural state of the curtain 217, the curtain 217 is arranged at the opening in a vertical downward state. When the brush cylinder 31 enters or leaves the storage cover 216, a thrust is generated on the curtain 217 to complete the opening of the curtain 217. The setting of the curtain 217 reduces the phenomenon of powder entering the storage cover 216.

[0032] The implementation principle of a sawdust screening device in the utility model embodiment:

[0033] If the screen 22 needs to be cleaned, when the cleaning component 3 is moved from the placement slot 215 to the slide slot 213, the bristles 32 are in contact with the two adjacent groups of screens 22, and the cleaning component 3 is repeatedly moved along the length direction of the slide slot 213, so that the blocked sawdust in the sieve holes of the upper screen 22 can be cleaned. Since the end of the brush cylinder 31 is rotatably connected to the slider 214, the brush cylinder 31 can be rotated so that the brush cylinder 31 switches to a rotating state, which makes it more convenient for the cleaning component 3 to clean the screen 22; at the same time, since the brush cylinder 31 is in a hollow state, the brush cylinder 31 is connected to the air pump 4 through the air pipe 33, the air pump 4 is started, the brush cylinder 31 is rotated, and the slider 214 is slid along the length direction of the first slide slot 213, so that the cleaning component 3 has a purging effect on the screen 22. The sawdust screening device in this embodiment greatly reduces the work intensity of the staff in cleaning the screen 22.

[0034] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A sawdust screening device, characterized in that: include, A screening hopper (2), the screening hopper (2) comprising a material frame (21) and an inclined screen (22), the screen (22) being provided in a plurality of groups, the plurality of groups of screens (22) being arranged in the material frame (21) at intervals along a vertical direction, the screen holes of the upper screen (22) having a larger aperture than the screen holes of the lower screen (22); A cleaning component (3) is arranged between two groups of adjacent screens (22), the cleaning component (3) comprises a brush cylinder (31) and bristles (32), the bristles (32) are connected to the circumferential side walls of the brush cylinder (31), and the opposite side walls of the material frame (21) are respectively provided with slide grooves (213) for the brush cylinder (31) to move, the length direction of the slide groove (213) is consistent with the length direction of the material frame (21), and the bristles (32) are in a state of being attached to the surface of the screen (22).

2. A sawdust screening device according to claim 1, characterized in that: A slider (214) is slidably connected in the slide groove (213), and the end of the brush cylinder (31) is rotatably connected to the slider (214), and the end of the brush cylinder (31) is in a state of penetrating the slider (214).

3. The sawdust screening device according to claim 1, characterized in that: The brush cylinder (31) is in a hollow state. One end of the brush cylinder (31) in the length direction is rotatably connected to an air supply pipe (33). One end of the air supply pipe (33) away from the brush cylinder (31) is connected to an air pump (4). A vent pipe (311) is arranged on the circumferential side wall of the brush cylinder (31). A through hole connected to the vent pipe (311) is opened on the wall of the brush cylinder (31). A plurality of groups of vent pipes (311) are arranged. The plurality of groups of vent pipes (311) are evenly arranged on the brush cylinder (31).

4. A sawdust screening device according to claim 3, characterized in that: The through hole wall is provided with a thread, the ventilation pipe (311) is threadedly connected to the through hole, and one end of the ventilation pipe (311) away from the screen cylinder extends towards the screen (22).

5. The sawdust screening device according to claim 4, characterized in that: The material frame (21) comprises a feeding end and a discharging end. Two opposite side walls of the feeding end of the material frame (21) are respectively provided with placement grooves (215), and the placement grooves (215) are connected to the sliding grooves (213).

6. The sawdust screening device according to claim 1, characterized in that: The inner wall of the feeding end of the material frame (21) is provided with a storage cover (216), a side of the storage cover (216) facing the discharging end of the material frame (21) is provided with an opening, and a barrier curtain (217) is provided at the top edge of the opening of the storage cover (216).

7. The sawdust screening device according to claim 6, characterized in that: A feed hopper (211) is arranged at the top of the feed end of the material frame (21), and a discharge hopper (212) is arranged at the output end of the material frame (21). The discharge hoppers (212) are provided in multiple groups, and the multiple groups of discharge hoppers (212) are respectively connected to the screen (22) and the material frame (21).

8. The sawdust screening device according to claim 6, characterized in that: A bracket (1) is provided at the bottom of the screening hopper (2), a shock absorber (25) is connected between the bracket (1) and the screening hopper (2), a force transmission plate (23) is provided on the bottom wall of the screening hopper (2), and a vibrator (24) is provided on the wall of the force transmission plate (23).

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