Closed powder feeding device

Abstract

The utility model relates to the technical field of feeding equipment, in particular to a closed powder feeding device. The feeding smoothness of powder at a feeding channel can be improved, and the occurrence rate of the event that the powder blocks a feeding port is effectively reduced; comprising a closed conveying shell and a belt conveyor installed in the closed conveying shell, and the belt conveyor comprises rotating rollers rotationally installed on the two sides in the closed conveying shell, a conveying belt arranged on the two rotating rollers in a sleeving mode and a driving motor providing power for rotation of one rotating roller; a feeding channel is arranged on the upper portion of the closed conveying shell, a discharging channel is arranged at the position, close to the discharging end of the belt conveyor, of the lower portion of the closed conveying shell, and a vibration dredging device is installed at the feeding channel. The vibration material scattering device comprises a fixing plate fixedly installed on the inner wall of the feeding channel, a disturbance plate hinged to the fixing plate, a rotating shaft rotationally installed at the bottom of the disturbance plate and a cam fixedly installed on the rotating shaft, and the bottom of the disturbance plate is obliquely arranged towards the lower portion of one side of the feeding direction of the belt conveyor.

Description

Technical Field

[0001] This utility model relates to the technical field of feeding equipment, and in particular to a closed powder feeding device. Background Technology

[0002] As is well known, a large amount of cement powder is used in the concrete production process. Currently, most cement powder is transported using belt conveyors. However, some cement powder falls during belt conveyor transport, resulting in a large amount of dust floating in the entire cement powder conveying line, which does not meet environmental protection requirements. Therefore, closed conveyors are used to transport the powder.

[0003] For example, Chinese utility model patent CN209275532U discloses a dustproof enclosed belt conveyor for conveying dry powder materials. It includes a base, with a dustproof frame welded to the top of the base. Two conveyor belts are symmetrically arranged at the top and bottom of the inner cavity of the dustproof frame, and drive rollers are embedded inside the horizontal ends of both conveyor belts. This type of belt conveyor is suitable for improving the stability of dry powder material transportation and facilitating the cleaning of the inner wall.

[0004] However, when implementing this device, the following defects were found: when the powder is fed to the conveyor belt through the feed inlet on the dustproof frame, the concentrated feeding of the powder causes poor feeding at the feed inlet, which easily leads to powder blockage and requires manual unblocking. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a closed-loop powder feeding device that can improve the smoothness of powder feeding at the feeding channel and effectively reduce the occurrence of powder blockage at the feeding port.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a closed-type powder feeding device, comprising a closed conveying housing and a belt conveyor installed inside the closed conveying housing. The belt conveyor includes rotating rollers rotatably installed on both sides inside the closed conveying housing, a conveyor belt sleeved on the two rotating rollers, and a drive motor providing power for the rotation of one of the rotating rollers. The upper part of the closed conveying housing is provided with a feeding channel, and the lower part of the closed conveying housing is provided with a discharge channel near the discharge end of the belt conveyor. A vibrating feeder is installed at the feeding channel. The vibrating feeder includes a fixed plate fixedly installed on the inner wall of the feeding channel, a disturbance plate hinged to the fixed plate, a rotating shaft rotatably installed on the bottom of the disturbance plate, and a cam fixedly installed on the rotating shaft. The bottom of the disturbance plate is inclined downwards towards the feeding direction of the belt conveyor, and the outer wall of the cam is in close contact with the conveyor belt. Furthermore, the drive motor is fixedly installed outside the closed conveying housing, and the output end of the drive motor is connected to one of the rotating rollers. The fixed plate is arranged perpendicular to the feeding direction of the belt conveyor.

[0009] Preferably, the device further includes multiple sets of agitating rods, which are evenly distributed between the fixed plate and the disturbance plate. Each agitating rod includes a telescopic rod and a support rod. One end of the support rod is hinged to the disturbance plate, and the other end of the support rod is hinged to one end of the telescopic rod. The other end of the telescopic rod is hinged to the fixed plate.

[0010] Preferably, the rotating shaft is provided with a roller brush with an outer diameter larger than that of the cam; further, the roller brush is provided with bristles, preferably fiber bundle bristles with a certain toughness and strength.

[0011] Preferably, multiple sets of idlers are rotatably installed inside the closed conveyor housing. The idlers are located between the conveyor belts and are used to support the upper part of the conveyor belt. Each idler is provided with a trapezoidal annular groove, and the upper part of the conveyor belt contacts the inner wall of the trapezoidal annular groove.

[0012] Preferably, a scraping assembly is provided inside the closed conveyor housing, away from the discharge channel. The scraping assembly is located inside the conveyor belt and includes two elastic supports, a slide, and a V-shaped scraper installed at the bottom of the slide. The V-shaped scraper is used to scrape off the material falling off the bottom wall of the conveyor belt. The elastic supports include a mounting base fixedly installed on the inner wall of the closed conveyor housing, a slide mounted vertically on the mounting base, and an elastic element. The slide is elastically connected to the mounting base through the elastic element, and the slide is mounted on the slide on the two elastic supports. Further, the V-shaped scraper is made of flexible rubber, and the bottom of the V-shaped scraper is in close contact with the bottom of the conveyor belt. The elastic element consists of a guide rod and a spring. The guide rod is fixedly installed on the slide and slidably installed on the mounting base. The spring is sleeved on the guide rod, and both ends of the spring abut against the slide and the mounting base, respectively. The elastic element can also be a spring or other equivalent component with elasticity.

[0013] Preferably, the upper part of the feeding channel is provided with a feeding port, and the lower part of the feeding channel is provided with a discharging port that communicates with the interior of the closed conveyor housing. The width of the discharging port in the feeding direction of the belt conveyor is greater than the width of the feeding port.

[0014] Preferably, a friction-enhancing layer is provided on the outer wall of the cam; further, the friction-enhancing layer may be a rubber layer or other equivalent structure that has the effect of improving friction.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a closed powder feeding device with the following beneficial effects: This closed powder feeding device feeds powder into the conveyor belt inside the closed conveyor housing through the feeding channel. The drive motor drives the rotating roller to rotate, and the rotating roller drives the conveyor belt to rotate. After the powder falls to the disturbance plate, the gravity at the disturbance plate increases, and the outer wall of the cam is in close contact with the conveyor belt. In this way, the cam can be driven to rotate synchronously during the rotation of the conveyor belt. Because the outer wall of the cam is not circular, the disturbance plate swings around the hinge point on the fixed plate during the rotation of the cam. Under the swinging action of the disturbance plate, the powder in the feeding channel can be vibrated and cleared, thereby improving the smoothness of the powder feeding in the feeding channel and effectively reducing the occurrence of powder blockage in the feeding channel. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the internal cross-sectional planar structure of this utility model;

[0019] Figure 3 This is the utility model Figure 2 Schematic diagram of the cross-sectional structure at point AA;

[0020] Figure 4 This is a three-dimensional structural diagram of the scraping component of this utility model;

[0021] Figure 5 This is a three-dimensional structural diagram of the vibratory feeder of this utility model;

[0022] Figure 6 This is the utility model Figure 2 A magnified schematic diagram of the structure at point B in the middle;

[0023] Figure 7 This is the utility model Figure 2 A magnified schematic diagram of the structure at point C in the middle;

[0024] The following are labels in the attached diagram: 1. Closed conveyor housing; 2. Rotary roller; 3. Conveyor belt; 4. Drive motor; 5. Feed channel; 6. Discharge channel; 7. Fixed plate; 8. Disruptor plate; 9. Rotating shaft; 10. Cam; 11. Telescopic rod; 12. Support rod; 13. Roller brush; 14. Idler roller; 15. Trapezoidal ring; 16. Slide frame; 17. V-shaped scraper; 18. Mounting base; 19. Slide block; 20. Elastic element; 21. Feed port; 22. Discharge port; 23. Resistance layer. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0026] As described in the background art, the dustproof enclosed belt conveyor for conveying dry powder materials has the following characteristics: When the powder is fed to the conveyor belt through the feed inlet on the dustproof frame, the concentrated feeding of the powder causes poor feeding at the feed inlet, which can easily lead to powder blockage and requires manual unblocking.

[0027] To solve this technical problem, this utility model provides a closed-type powder feeding device, which is used for conveying powder.

[0028] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] Example 1

[0031] Please refer to Figure 1-2 as well as Figure 5 and Figure 7 A closed-loop powder feeding device includes: a closed-loop conveying housing 1 and a belt conveyor installed inside the closed-loop conveying housing 1. The belt conveyor includes rotating rollers 2 rotatably mounted on both sides inside the closed-loop conveying housing 1, a conveyor belt 3 sleeved on the two rotating rollers 2, and a drive motor 4 providing power for the rotation of one of the rotating rollers 2. A feeding channel 5 is provided at the upper part of the closed-loop conveying housing 1, and a discharge channel 6 is provided at the lower part of the closed-loop conveying housing 1 near the discharge end of the belt conveyor. A vibrating feeder is installed at the feeding channel 5. The vibrating feeder includes... The conveyor includes a fixed plate 7 fixedly installed on the inner wall of the feed channel 5, a disturbance plate 8 hinged to the fixed plate 7, a rotating shaft 9 rotatably installed on the bottom of the disturbance plate 8, and a cam 10 fixedly installed on the rotating shaft 9. The bottom of the disturbance plate 8 is inclined downward toward the feeding direction of the belt conveyor, and the outer wall of the cam 10 is in close contact with the conveyor belt 3. Furthermore, a drive motor 4 is fixedly installed on the outside of the closed conveyor housing 1, and the output end of the drive motor 4 is connected to one of the rotating rollers 2. The fixed plate 7 is arranged perpendicular to the feeding direction of the belt conveyor.

[0032] For details, please refer to Figure 5 It also includes multiple sets of agitating rods, which are evenly distributed between the fixed plate 7 and the disturbance plate 8. The agitating rods include a telescopic rod 11 and a support rod 12. One end of the support rod 12 is hinged to the disturbance plate 8, and the other end of the support rod 12 is hinged to one end of the telescopic rod 11. The other end of the telescopic rod 11 is hinged to the fixed plate 7.

[0033] For details, please refer to Figure 5 The rotating shaft 9 is provided with a roller brush 13 with an outer diameter larger than that of the cam 10; the roller brush 13 is further provided with bristles, preferably fiber bundle bristles with a certain toughness and strength.

[0034] For details, please refer to Figure 2 The upper part of the feeding channel 5 is provided with a feeding port 21, and the lower part of the feeding channel 5 is provided with a discharge port 22 that communicates with the inside of the closed conveyor housing 1. The width of the discharge port 22 in the feeding direction of the belt conveyor is greater than the width of the feeding port 21.

[0035] For details, please refer to Figure 7 A friction-enhancing layer 23 is provided on the outer wall of the cam 10; furthermore, the friction-enhancing layer 23 may be a rubber layer or other equivalent structure that has the effect of improving friction.

[0036] The enclosed powder feeding device provided in this embodiment drives the support rod 12 to move synchronously during the movement of the disturbance plate 8. Since the length of the telescopic rod 11 can be extended and retracted, the support rod 12 can move up, down, left, and right. The stirring rod can further agitate the powder in the feeding channel 5, thereby further improving the smoothness of powder feeding. During the rotation of the cam 10, the rotating shaft 9 is driven to rotate, and the rotating shaft 9 drives the roller brush 13 to rotate. The roller brush 13 can remove the residual powder on the upper part of the conveyor belt 3, preventing the powder from adhering to the surface of the conveyor belt 3. The friction-increasing layer 23 on the outer wall of the cam 10 can increase the friction between the cam 10 and the conveyor belt 3, thereby improving the transmission effect between the two and preventing relative sliding between them. The size of the discharge port 22 is larger than that of the feed port 21, increasing the contact area between the powder in the feeding channel 5 and the conveyor belt 3, thus further preventing the powder from clogging in the feeding channel 5.

[0037] Example 2

[0038] The closed-loop powder feeding device provided in Example 1 has been further optimized. For details, please refer to [link / reference]. Figure 2-3 Multiple sets of idlers 14 are rotatably installed inside the closed conveyor housing 1. The idlers 14 are located between the conveyor belts 3 and are used to support the upper part of the conveyor belts 3. The idlers 14 are provided with trapezoidal ring recesses 15, and the upper part of the conveyor belts 3 is in contact with the inner wall of the trapezoidal ring recesses 15.

[0039] For details, please refer to Figure 4 or Figure 6 A scraping assembly is located inside the closed conveyor housing 1, away from the discharge channel 6. The scraping assembly is situated within the conveyor belt 3 and includes two elastic supports, a slide 16, and a V-shaped scraper 17 mounted on the bottom of the slide 16. The V-shaped scraper 17 is used to scrape off material falling from the bottom wall of the conveyor belt 3. The elastic supports include a mounting base 18 fixedly mounted on the inner wall of the closed conveyor housing 1, a slide 19 slidably mounted on the mounting base 18, and an elastic element 20. The slide 19 is elastically connected to the mounting base 18 via the elastic element 20. The slide 16 is mounted on the two elastic supports. The slide 19; furthermore, the V-shaped scraper 17 is made of flexible rubber, and the bottom of the V-shaped scraper 17 is in close contact with the bottom of the inner side of the conveyor belt 3; the elastic element 20 adopts a guide rod and a spring, the guide rod is fixedly installed on the slide 19, the guide rod is slidably installed on the mounting seat 18, the spring is sleeved on the guide rod, and the two ends of the spring abut against the slide 19 and the mounting seat 18 respectively; the elastic element 20 can also be a spring or other equivalent element with elastic effect; the bottom of the closed conveyor housing 1 is provided with a discharge port near the scraping assembly, and the discharge port is used for the scraping assembly to scrape off the falling material for external discharge.

[0040] The enclosed powder feeding device provided in this embodiment, under the action of the idler roller 14 and the trapezoidal ring 15, the upper part of the conveyor belt 3 is V-shaped, which can improve the conveying efficiency of the conveyor belt 3 for powder and reduce the amount of powder falling from the conveyor belt 3. Since the upper part of the conveyor belt 3 is folded into a V-shaped groove, the width of the upper part of the conveyor belt 3 is smaller than the width of the lower part of the conveyor belt 3. The powder falling from the conveyor belt 3 will fall directly to the lower part of the conveyor belt 3. Under the action of the elastic member 20, the V-shaped scraper 17 is in close contact with the lower part of the conveyor belt 3. The V-shaped scraper 17 can scrape off the falling material from the lower part of the conveyor belt 3. The scraped material is discharged through the discharge port to reduce the adhesion of powder on the inner wall of the conveyor belt 3.

[0041] The operation of the enclosed powder feeding device provided by this utility model is as follows: The powder is fed into the conveyor belt 3 inside the closed conveyor housing 1 through the feeding channel 5. The drive motor 4 drives the rotating roller 2 to rotate, and the rotating roller 2 drives the conveyor belt 3 to rotate. After the powder falls to the disturbance plate 8, the gravity at the disturbance plate 8 increases, and the outer wall of the cam 10 is in close contact with the conveyor belt 3. Thus, the cam 10 can be driven to rotate synchronously during the rotation of the conveyor belt 3. Since the outer wall of the cam 10 is not circular, the disturbance plate 8 swings around the hinge point on the fixed plate 7 during the rotation of the cam 10. Under the swinging action of the disturbance plate 8, the disturbance plate 8 drives the stirring rod to move synchronously. The stirring rod further clears the powder in the feeding channel 5, so that the powder falls smoothly to the conveyor belt 3. The powder is transported to the discharge channel 6 through the conveyor belt 3. The powder can then reach the required conveying location through the discharge channel 6.

[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A closed-type powder feeding device, comprising a closed conveying housing (1) and a belt conveyor installed within the closed conveying housing (1), the belt conveyor comprising rotating rollers (2) rotatably mounted on both sides inside the closed conveying housing (1), a conveyor belt (3) sleeved on the two rotating rollers (2), and a drive motor (4) providing power for the rotation of one of the rotating rollers (2); characterized in that, The upper part of the closed conveyor housing (1) is provided with a feeding channel (5), and the lower part of the closed conveyor housing (1) is provided with a discharge channel (6) near the discharge end of the belt conveyor. A vibrating feeder is installed at the feeding channel (5). The vibrating feeder includes a fixed plate (7) fixedly installed on the inner wall of the feeding channel (5), a disturbance plate (8) hinged to the fixed plate (7), a rotating shaft (9) rotatably installed on the bottom of the disturbance plate (8), and a cam (10) fixedly installed on the rotating shaft (9). The bottom of the disturbance plate (8) is inclined downward toward the side of the belt conveyor feeding direction, and the outer wall of the cam (10) is in close contact with the conveyor belt (3).

2. The enclosed powder feeding device according to claim 1, characterized in that, It also includes multiple sets of stirring rods, which are evenly distributed between the fixed plate (7) and the disturbance plate (8). The stirring rods include a telescopic rod (11) and a support rod (12). One end of the support rod (12) is hinged to the disturbance plate (8), and the other end of the support rod (12) is hinged to one end of the telescopic rod (11). The other end of the telescopic rod (11) is hinged to the fixed plate (7).

3. The enclosed powder feeding device according to claim 2, characterized in that, The rotating shaft (9) is provided with a roller brush (13) with an outer diameter larger than that of the cam (10).

4. The enclosed powder feeding device according to claim 1, characterized in that, Multiple sets of idlers (14) are rotatably installed inside the closed conveyor housing (1). The idlers (14) are located between the conveyor belts (3). The idlers (14) are used to support the upper part of the conveyor belts (3). The idlers (14) are provided with trapezoidal ring recesses (15). The upper part of the conveyor belts (3) is in contact with the inner wall of the trapezoidal ring recesses (15).

5. The enclosed powder feeding device according to claim 4, characterized in that, A scraping assembly is provided inside the closed conveyor housing (1) at a location away from the discharge channel (6). The scraping assembly is located inside the conveyor belt (3). The scraping assembly includes two elastic supports, a slide (16), and a V-shaped scraper (17) installed at the bottom of the slide (16). The V-shaped scraper (17) is used to scrape off the material falling off the bottom wall of the conveyor belt (3). The elastic support includes a mounting seat (18) fixedly installed on the inner wall of the closed conveyor housing (1), a slide (19) slidably installed on the mounting seat (18), and an elastic element (20). The slide (19) is elastically connected to the mounting seat (18) through the elastic element (20). The slide (16) is installed on the slide (19) on the two elastic supports.

6. The enclosed powder feeding device according to claim 1, characterized in that, The upper part of the feeding channel (5) is provided with a feeding port (21), and the lower part of the feeding channel (5) is provided with a discharge port (22) that communicates with the inside of the closed conveyor housing (1). The width of the discharge port (22) in the feeding direction of the belt conveyor is greater than the width of the feeding port (21).

7. The enclosed powder feeding device according to claim 5, characterized in that, The outer wall of the cam (10) is provided with a resistance-enhancing layer (23).

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