Spiral conveyor with dustproof structure

Abstract

The utility model discloses a spiral conveyor with dustproof structure, including spiral conveyor body, feed pipe and discharge pipe still include: first dustproof mechanism: first dustproof mechanism set up on the circumference inner wall of feed pipe, the circumference inner wall of feed pipe is set up with a plurality of equidistance distribution's mounting hole, the inner wall of mounting hole is provided with the screw rod through the sealing bearing, and the both ends of screw rod are provided with first dustproof board and connecting rod respectively, the outer wall on one side of connecting rod is set up with the sliding slot, and the circumference outer wall of feed pipe is provided with the connecting plate through the bearing. The utility model discloses spiral conveyor with dustproof structure has improved the equipment sealing property, prevents the effect of dust leakage.

Description

Technical Field

[0001] This utility model relates to the field of material conveying equipment technology, and in particular to a screw conveyor with a dustproof structure. Background Technology

[0002] A screw conveyor is a mechanical device that uses a motor to drive a rotating screw blade to push materials for continuous conveying. It is widely used in various fields of industrial production. Its core components are the screw shaft and the casing. The rotation of the screw blades pushes powdery, granular, or small lump materials axially, and it is suitable for short-distance conveying in horizontal, inclined, or vertical directions.

[0003] However, when traditional screw conveyors transport powdery materials such as ore and cement in batches, the high-speed rotation of the screw blades will generate significant centrifugal shearing effect and airflow disturbance, which can easily lead to dust leakage and pose safety hazards.

[0004] For example, when materials fall from the feed inlet of a screw conveyor, they are violently agitated by the screw blades. Some lightweight powders (such as fine cement powder) are carried by the high-speed airflow, forming an upward dust surge. At the same time, some materials are discharged at high speed from the discharge outlet due to the inertia of the screw propulsion. After mixing with the air, they form a "fogging effect," causing the dust to diffuse. Unsealed feed inlets and outlets lead to dust concentrations exceeding the standard. Workers exposed to this for a long time are prone to respiratory diseases and may also pose a risk of dust explosion. Utility Model Content

[0005] This utility model discloses a screw conveyor with a dustproof structure, which aims to solve the technical problem that when conveying powdery materials such as ore and cement in batches, the high-speed rotation of the screw blades will generate significant centrifugal shearing effect and airflow disturbance, which can easily lead to dust leakage and pose safety hazards.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A screw conveyor with a dustproof structure includes a screw conveyor body, a feed pipe, and a discharge pipe, and further includes: a first dustproof mechanism: the first dustproof mechanism is disposed on the inner circumference of the feed pipe, the inner circumference of the feed pipe has a plurality of equally spaced mounting holes, a rotating rod is disposed on the inner wall of the mounting holes via a sealed bearing, a first dustproof plate and a connecting rod are respectively disposed at both ends of the rotating rod, a sliding groove is disposed on one outer wall of the connecting rod, a connecting plate is disposed on the outer circumference of the feed pipe via a bearing, a plurality of equally spaced fixed columns are disposed on the outer circumference of the connecting plate, and a driving assembly is disposed on the outer circumference of the connecting plate; a second dustproof mechanism: the second dustproof mechanism is disposed on the inner wall of the discharge pipe.

[0008] In this case, a rotatable first dustproof plate is installed on the inner wall of the feed pipe to block dust leakage using a dynamic mechanical barrier. When the material falls, the first dustproof plate opens under the action of the drive component. The drive component transmits the rotational torque to the rotating rod through the sliding cooperation between the fixed column and the slide groove, thereby adjusting the angle of the first dustproof plate. The rotating rod is embedded in the mounting hole of the feed pipe through a sealed bearing to ensure flexible rotation and no leakage. After the material passes through, the first dustproof plate immediately returns to the closed state, forming a "follow-up seal" to avoid dust spray caused by traditional straight-through feeding, which affects the working environment.

[0009] In a preferred embodiment, the drive assembly includes an assembly box disposed on the outer circumferential wall of the feed tube. A first motor is disposed on the top outer wall of the assembly box. A connecting post is disposed at the output end of the first motor. A gear is disposed at one end of the connecting post. A plurality of toothed grooves are formed on the outer circumferential wall of the connecting plate. The gear is used in conjunction with the plurality of toothed grooves.

[0010] Specifically, a gear and toothed gear meshing transmission is used to precisely convert the rotational motion of the first motor into the opening and closing action of the first dustproof plate, thereby achieving dust control of the feed inlet.

[0011] In a preferred embodiment, the second dustproof mechanism includes an assembly shaft, which is mounted on the inner wall of the opposite side of the discharge pipe via a bearing. A plurality of second dustproof plates are provided on the outer circumferential wall of the assembly shaft at equal intervals, and a second motor is externally connected to one end of the assembly shaft.

[0012] Specifically, a second rotating dustproof plate driven by a second motor is installed inside the discharge pipe. During material conveying, the second dustproof plate rotates to a horizontal position to prevent some powdery material from leaking out. During unloading, the second motor runs at high speed, causing the dustproof plate to generate a centrifugal airflow field, which throws the lighter dust back into the conveying cavity along a parabolic trajectory. At the same time, the turbulence effect reduces the local positive pressure at the discharge port, achieving a dynamic balance between dust suppression and material discharge.

[0013] As described above, a screw conveyor with a dustproof structure includes a screw conveyor body, a feed pipe, and a discharge pipe, and further includes: a first dustproof mechanism: the first dustproof mechanism is disposed on the inner circumference of the feed pipe, the inner circumference of the feed pipe has several equally spaced mounting holes, a rotating rod is disposed on the inner wall of the mounting holes via a sealed bearing, a first dustproof plate and a connecting rod are respectively disposed at both ends of the rotating rod, a sliding groove is disposed on one outer wall of the connecting rod, a connecting plate is disposed on the outer circumference of the feed pipe via a bearing, several equally spaced fixed columns are disposed on the outer circumference of the connecting plate, and a drive assembly is disposed on the outer circumference of the connecting plate; a second dustproof mechanism: the second dustproof mechanism is disposed on the inner wall of the discharge pipe. The screw conveyor with a dustproof structure provided by this utility model has the technical effect of improving the sealing performance of the equipment and preventing dust leakage. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a screw conveyor with a dustproof structure proposed in this utility model.

[0015] Figure 2 This is a cross-sectional structural diagram of a screw conveyor with a dustproof structure proposed in this utility model.

[0016] Figure 3 This is a schematic diagram of the first dustproof mechanism of a screw conveyor with a dustproof structure proposed in this utility model.

[0017] Figure 4 This is a schematic diagram of the second dustproof mechanism of a screw conveyor with a dustproof structure proposed in this utility model.

[0018] In the attached diagram: 1. Screw conveyor body; 2. Feed pipe; 3. Discharge pipe; 4. Assembly box; 5. First motor; 6. Second motor; 7. First dustproof plate; 8. Second dustproof plate; 9. Assembly shaft; 10. Connecting rod; 11. Connecting plate; 12. Fixed column; 13. Gear groove; 14. Connecting column; 15. Gear; 16. Rotary rod. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and marked in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0020] The screw conveyor with a dustproof structure disclosed in this utility model is mainly used in scenarios where powdery materials such as ore and cement are transported in batches. Due to the high-speed rotation of the screw blades, a significant centrifugal shearing effect and airflow disturbance will be generated, which can easily lead to dust leakage and pose a safety hazard.

[0021] Reference Figure 1 , Figure 2 and Figure 3 A screw conveyor with a dustproof structure includes a screw conveyor body 1, a feed pipe 2, and a discharge pipe 3, and further includes: a first dustproof mechanism: the first dustproof mechanism is disposed on the inner circumference of the feed pipe 2, the inner circumference of the feed pipe 2 has a plurality of equally spaced mounting holes, a rotating rod 16 is disposed on the inner wall of the mounting holes via a sealed bearing, a first dustproof plate 7 and a connecting rod 10 are respectively disposed at both ends of the rotating rod 16, a sliding groove is disposed on one outer wall of the connecting rod 10, a connecting plate 11 is disposed on the outer circumference of the feed pipe 2 via a bearing, a plurality of equally spaced fixing columns 12 are disposed on the outer circumference of the connecting plate 11, and a drive assembly is disposed on the outer circumference of the connecting plate 11; a second dustproof mechanism: the second dustproof mechanism is disposed on the inner wall of the discharge pipe 3.

[0022] Both the feed pipe 2 and the discharge pipe 3 are located on the outer wall of the screw conveyor body 1. The feed pipe 2 has a circular structure, and the discharge pipe 3 has a square structure.

[0023] In practical applications, photoelectric material sensors and pressure and flow composite sensors are integrated into the feed pipe 2 and the discharge pipe 3, respectively. The photoelectric sensor at the feed port adopts the infrared beam principle to monitor the material falling signal in real time. The response time is ≤5ms, which triggers the first dustproof plate 7 to open before the material arrives and close after it passes through, thus preventing dust from gushing out. The pressure sensor at the discharge port monitors the positive pressure fluctuations in the pipe. Combined with the flow sensor data, when the pressure exceeds the limit or the flow changes suddenly, it links the second dustproof mechanism to dynamically strengthen the air curtain barrier. At the same time, the sensor signals are processed by the PLC to generate maintenance warnings. None of the above sensors are shown in the figure. Their models can be selected according to the actual situation.

[0024] In this case, a rotatable first dustproof plate 7 is installed on the inner wall of the feed pipe 2 to block dust leakage using a dynamic mechanical barrier. When the material falls, the first dustproof plate 7 opens under the action of the drive component. The drive component transmits the rotational torque to the rotating rod 16 through the sliding cooperation between the fixed column 12 and the slide groove, thereby adjusting the angle of the first dustproof plate 7. The rotating rod 16 is embedded in the mounting hole of the feed pipe 2 through a sealed bearing to ensure flexible rotation and no leakage. After the material passes through, the first dustproof plate 7 immediately returns to the closed state, forming a "follow-up seal" to avoid dust spray caused by traditional straight-through feeding, which affects the working environment.

[0025] Reference Figure 2 and Figure 3 In a preferred embodiment, the drive assembly includes an assembly box 4, which is disposed on the outer circumferential wall of the feed pipe 2. A first motor 5 is disposed on the top outer wall of the assembly box 4. A connecting post 14 is disposed at the output end of the first motor 5. A gear 15 is disposed at one end of the connecting post 14. A plurality of toothed grooves 13 are provided on the outer circumferential wall of the connecting plate 11. The gear 15 is used in conjunction with the plurality of toothed grooves 13.

[0026] Specifically, the gear 15 and the tooth groove 13 mesh to precisely convert the rotational motion of the first motor 5 into the opening and closing action of the first dustproof plate 7, thereby achieving dust control of the feed inlet.

[0027] Reference Figure 3 In a preferred embodiment, a stop is provided at one end of the fixing post 12, the outer circumferential wall of the fixing post 12 contacts the inner wall of the slide groove, and the circumferential diameter of the fixing post 12 is the same as the width of the slide groove.

[0028] One end of the fixed column 12 is provided with a stop block, which can be used to prevent the connecting rod 10 from disengaging from the slide. The fixed column 12 can drive the first dustproof plate 7 to achieve controllable flipping through the guide action of the slide to adjust the opening and closing state of the feed port.

[0029] Reference Figure 2 and Figure 4 In a preferred embodiment, the second dustproof mechanism includes an assembly shaft 9, which is mounted on the inner wall of the opposite side of the discharge pipe 3 via a bearing. A plurality of second dustproof plates 8 are provided on the outer circumference of the assembly shaft 9 at equal intervals. A second motor 6 is connected to one end of the assembly shaft 9.

[0030] Specifically, a rotating second dustproof plate 8 driven by a second motor 6 is installed inside the discharge pipe 3. During material conveying, the second dustproof plate 8 rotates to a horizontal position to prevent some powdery material from leaking out. During unloading, the second motor 6 runs at high speed, causing the dustproof plate to generate a centrifugal airflow field, which throws the lighter dust back into the conveying cavity along a parabolic trajectory. At the same time, the turbulence effect reduces the local positive pressure at the discharge port, achieving a dynamic balance between dust suppression and material discharge.

[0031] Reference Figure 4 In a preferred embodiment, the distance between the edge of the second dustproof plate 8 and the inner wall of the discharge pipe 3 is 1-5 mm, and the surface of the second dustproof plate 8 is covered with a wear-resistant rubber layer.

[0032] Specifically, by covering the edge of the second dustproof plate 8 with a wear-resistant rubber layer and a small gap of 1-5mm, sparks generated by metal friction are avoided, and the tolerance is compensated by the elasticity of the rubber, so that the sealing performance is maintained for a long time.

[0033] Working principle: During use, the material enters the conveyor body 1 through the feed pipe 2. The photoelectric sensor monitors the material falling signal in real time and triggers the first dustproof mechanism to work. The first motor 5 drives the connecting plate 11 to rotate through the meshing of the gear 15 and the tooth groove 13. The fixed column 12 slides along the slide groove of the connecting rod 10, driving the rotating rod 16 to rotate and open the first dustproof plate 7. After the material passes through, the dustproof plate immediately closes to form a seal. At the same time, during material conveying, the second dustproof plate 8 rotates to a horizontal position to prevent some powdery material from leaking. During unloading, the second motor 6 runs at high speed, causing the second dustproof plate 8 to generate a centrifugal airflow field, which throws the lighter dust back into the conveying cavity along a parabolic trajectory. At the same time, the turbulence effect reduces the local positive pressure at the discharge port, achieving a dynamic balance between dust suppression and material discharge.

[0034] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A screw conveyor with a dustproof structure, comprising a screw conveyor body (1), a feed pipe (2), and a discharge pipe (3), characterized in that, Also includes: First dustproof mechanism: The first dustproof mechanism is set on the inner circumference of the feed pipe (2). The inner circumference of the feed pipe (2) is provided with a plurality of equally spaced mounting holes. A rotating rod (16) is provided on the inner wall of the mounting holes through a sealed bearing. The two ends of the rotating rod (16) are respectively provided with a first dustproof plate (7) and a connecting rod (10). A sliding groove is provided on one outer wall of the connecting rod (10). A connecting plate (11) is provided on the outer circumference of the feed pipe (2) through a bearing. A plurality of equally spaced fixing columns (12) are provided on the outer circumference of the connecting plate (11). A driving component is provided on the outer circumference of the connecting plate (11). Second dustproof mechanism: The second dustproof mechanism is installed on the inner wall of the discharge pipe (3).

2. The screw conveyor with a dustproof structure according to claim 1, characterized in that, The drive assembly includes an assembly box (4), which is disposed on the outer circumferential wall of the feed pipe (2). A first motor (5) is disposed on the top outer wall of the assembly box (4). A connecting post (14) is disposed at the output end of the first motor (5). A gear (15) is disposed at one end of the connecting post (14). A plurality of tooth grooves (13) are opened on the outer circumferential wall of the connecting plate (11). The gear (15) is used in conjunction with the plurality of tooth grooves (13).

3. A screw conveyor with a dustproof structure according to claim 2, characterized in that, A stop is provided at one end of the fixed column (12), the outer circumference of the fixed column (12) is in contact with the inner wall of the slide groove, and the circumference diameter of the fixed column (12) is the same as the width of the slide groove.

4. A screw conveyor with a dustproof structure according to claim 1, characterized in that, The second dustproof mechanism includes an assembly shaft (9), which is mounted on the inner wall of the opposite side of the discharge pipe (3) via a bearing. Several second dustproof plates (8) are evenly distributed on the outer circumference of the assembly shaft (9), and a second motor (6) is connected to one end of the assembly shaft (9).

5. A screw conveyor with a dustproof structure according to claim 4, characterized in that, The distance between the edge of the second dustproof plate (8) and the inner wall of the discharge pipe (3) is 1-5mm, and the surface of the second dustproof plate (8) is covered with a wear-resistant rubber layer.

6. A screw conveyor with a dustproof structure according to claim 5, characterized in that, The feed pipe (2) has a circular structure, and the discharge pipe (3) has a square structure.

7. A screw conveyor with a dustproof structure according to claim 1, characterized in that, Both the feed pipe (2) and the discharge pipe (3) are located on the outer wall of the screw conveyor body (1).

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