Belt feeding device with buffering and dust suppression functions

Abstract

The utility model relates to a feeding device, in particular to a belt feeding device with buffering and dust suppression functions. Comprising a feeding pipe, a plurality of inclined valve plates which are arranged in a staggered mode are fixedly connected to the interior of the feeding pipe along the feeding axis track, the inclined valve plates incline downwards in the direction close to the axis of the feeding pipe and are used for slowing down the falling speed of powder, and the bottom of the feeding pipe is obliquely arranged. According to the feeding device, when the belt conveyor conveys powder, the cover plate is mounted on the feeding pipe through the mounting mechanism, so that the feeding pipe is located above the belt, meanwhile, the feeding pipe is driven to ascend and descend through the adjusting assembly, and the distance between the feeding pipe and the belt is adjusted; the powder is buffered through the inclined valve plates arranged in the feeding pipe, so that the speed of the powder in the falling process is reduced, and the powder is prevented from impacting a belt at a high speed.

Description

Technical Field

[0001] This utility model relates to a feeding device, specifically, to a belt feeding device with buffer and dust suppression function. Background Technology

[0002] In ready-mixed concrete plants, the powdery materials required for production include cement, fly ash, mineral powder and other main cementitious materials, as well as expanding agents, silica fume and other powdery materials. Due to space constraints and frequency of use, cement, mineral powder and fly ash are stored in the main powder silos of the mixing plant to ensure normal production of ordinary concrete.

[0003] With societal development, construction projects are placing functional demands on concrete, leading to the frequent use of various powdered materials that enhance concrete performance, such as expansion agents, silica fume, and glass microspheres. Concrete companies are increasingly focused on cost control, resulting in the use of non-mainstream cementitious materials like limestone powder and ultrafine powder in concrete.

[0004] There are many types of non-mainstream powders, and their usage frequency is low. Storing them in the same way as the main powders would negatively impact daily production efficiency. The common practice is to feed them directly onto a belt conveyor. There are two methods for this: one is to build a small powder silo above the belt conveyor, where the powder is metered and guided onto the belt conveyor through a discharge pipe, and then the belt conveyor transports the powder away; the other is to package the powder according to production requirements, with workers opening the packages above the belt conveyor and feeding it directly. Manual feeding is too polluting and is gradually being phased out. Using a powder silo for feeding has several problems:

[0005] To prevent damage to the hopper caused by the belt conveyor colliding with the bottom of the hopper during powder transport, a gap is usually left between the belt and the discharge pipe. This gap is used to prevent friction between the belt and the discharge pipe. However, if the gap between the discharge pipe and the belt is too small, although the friction between the discharge pipe and the belt can be solved, rapid discharge cannot be achieved because the too small gap will restrict the transport of powder. Therefore, the position of the belt conveyor is adjusted to increase the distance between the belt and the discharge pipe to ensure the normal transport of powder.

[0006] When the distance between the belt and the discharge pipe increases, due to the small particle size of the powder, some powder will escape during the conveying process. This escaped powder will diffuse into the air, polluting the working environment of the workers and wasting the powder. The faster the powder falls, the greater the degree of escape and the more powder is released. For powders with higher density, the rapid fall will impact the belt, increasing the load on the belt. Therefore, we propose a belt feeding device with buffering and dust suppression functions. Utility Model Content

[0007] The purpose of this invention is to provide a belt feeding device with a buffer and dust suppression function to solve the problem mentioned in the background art where the rapid falling speed of powder increases the belt load, causing powder splashing and dust.

[0008] To address the aforementioned problems, the present invention aims to provide a belt feeding device with a buffer and dust suppression function. The device includes a feeding pipe, inside which several staggered inclined valve plates are fixedly connected along the feeding axis. These inclined valve plates are inclined downwards towards the axis of the feeding pipe, thus slowing the falling speed of the powder. The bottom of the feeding pipe is inclined, and a mounting cover is located on the outer side of the feeding pipe near the bottom. A dustproof curtain is fixedly connected to the bottom edge of the mounting cover, and the mounting cover and dustproof curtain are used to block splashed powder. The mounting cover has an opening near its center that penetrates the cover. The bottom of the feeding pipe passes through the opening and extends outward. The mounting cover is equipped with a mounting mechanism for installing the feeding pipe and adjusting the distance between the bottom of the feeding pipe and the belt. As the powder falls inside the feeding pipe, the tilting valve plate slows down the falling powder, preventing it from impacting the belt at a high speed, reducing the load on the belt, and reducing powder splashing. The mounting cover also blocks the splashed powder, allowing it to fall back onto the belt, further reducing powder waste.

[0009] As a further improvement to this technical solution, a hopper is fixedly connected to the top of the feeding pipe. The diameter of the hopper is larger than the diameter of the feeding pipe. The connection between the hopper and the feeding pipe is inclined. When the powder in the hopper falls into the inside of the feeding pipe, the connection between the hopper and the feeding pipe slows down the falling powder and prevents the powder from impacting the belt at a high speed.

[0010] As a further improvement to this technical solution, the installation mechanism includes an installation frame fixedly connected to the installation cover plate. The installation frame is located outside the opening, and two movable seats are slidably connected inside the installation frame along the axial direction of the installation frame. The two movable seats are respectively located on both sides of the feeding pipe, and the movable seats move along the axial direction of the installation frame.

[0011] As a further improvement to this technical solution, the two movable seats are equipped with adjustment components. When the two movable seats move towards the feeding pipe, the movable seats drive the adjustment components to move so that they clamp the feeding pipe. The adjustment components are used to drive the feeding pipe to move towards or away from the belt, thereby changing the distance between the feeding pipe and the belt, and avoiding a large impact force of powder on the belt when the distance between the feeding pipe and the belt is too far.

[0012] As a further improvement to this technical solution, the adjustment component includes a fixed plate fixedly mounted on the movable seat, a lifting shell slidably connected to the fixed plate along the axial direction of the fixed plate, and a clamping block fixedly connected to the top of the lifting shell near the feeding tube. When the installation mechanism clamps the feeding tube, the clamping block is in close contact with the side wall of the feeding tube.

[0013] As a further improvement to this technical solution, the upper side of the fixed plate is threaded with an adjusting screw. The top of the adjusting screw passes through the top of the lifting shell and is fixed with a knob. The adjusting screw is rotatably connected to the top of the lifting shell through a bearing. During the rotation of the adjusting screw, the lifting shell is driven to move upward or downward along the axis of the adjusting screw. During the movement of the lifting shell, the clamping block is driven to move, which in turn drives the feeding pipe to move.

[0014] As a further improvement to this technical solution, a clamping screw is rotatably connected to one side of the mounting frame via a bearing. The clamping screw has two threads in opposite directions, and the two movable seats are respectively threaded onto the two threads of the clamping screw. During rotation, the clamping screw drives the two movable seats to move closer to or further away from each other.

[0015] As a further improvement to this technical solution, a discharge pipe is slidably connected inside the hopper along the axial direction of the hopper. The outer side of the discharge pipe is in sliding contact with the inner wall of the hopper. The top of the discharge pipe passes through the top of the hopper and extends outward. The discharge pipe is fixedly connected to the bottom of the silo. The powder in the silo enters the interior of the hopper through the discharge pipe.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. This belt feeding device with buffering and dust suppression function, when the belt conveyor is conveying powder, uses an installation mechanism to install a cover plate on the feeding pipe so that the feeding pipe is above the belt. At the same time, the adjusting component drives the feeding pipe to rise and fall, adjusting the distance between the feeding pipe and the belt. When the powder flows inside the feeding pipe, several inclined valve plates set inside the feeding pipe buffer the powder, thereby reducing the speed of the powder during the falling process, avoiding the powder from impacting the belt at a high speed, reducing the belt load, and reducing the splashing and waste of powder. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is an overall sectional view of the present invention;

[0020] Figure 3 This is a schematic diagram of the feeding pipe in this utility model;

[0021] Figure 4 This is a cross-sectional view of the feeding pipe in this utility model;

[0022] Figure 5 This is a schematic diagram of the structure for installing the cover plate in this utility model;

[0023] Figure 6 This is a schematic diagram of the installation mechanism in this utility model;

[0024] Figure 7 This is a cross-sectional view of the mounting mechanism in this utility model.

[0025] The meanings of the labels in the diagram are as follows:

[0026] 1. Feeding pipe; 11. Inclined valve plate; 12. Feeding hopper; 13. Discharge pipe;

[0027] 2. Install cover plate; 21. Dustproof curtain;

[0028] 3. Installation mechanism; 31. Installation frame; 32. Movable seat; 33. Fixing plate; 34. Lifting shell; 35. Adjusting screw; 36. Clamping block; 37. Clamping screw. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Example 1

[0031] Please see Figure 1 - Figure 5 As shown, the purpose of this embodiment is to provide a belt feeding device with buffering and dust suppression function, including a feeding pipe 1. Several staggered inclined valve plates 11 are fixedly connected inside the feeding pipe 1 along its axial trajectory. The inclined valve plates 11 are inclined downwards towards the axial direction of the feeding pipe 1, and are used to slow down the falling speed of the powder. The spacing between the inclined valve plates 11 is the same, and one end of each inclined valve plate 11 does not cross the axial direction of the feeding pipe 1. This ensures that the powder has half of the channel in the feeding pipe 1, ensuring the normal falling of the powder. Simultaneously, the feeding pipe 1 is composed of two arc-shaped plates (such as...). Figure 4As shown, two arc-shaped plates are fixed together by screws to form a feeding pipe 1. At the same time, several inclined valve plates 11 are fixed on one of the arc-shaped plates. When the two arc-shaped plates are combined, one side of the inclined valve plate 11 is in close contact with the other arc-shaped plate to prevent powder from entering the gap between the inclined valve plate 11 and the arc-shaped plate.

[0032] Meanwhile, when the tilt angle of the tilt valve plate 11 is different, the effect of the tilt valve plate 11 on slowing down the falling speed of the powder is different. When the tilt surface of the tilt valve plate 11 is closer to the vertical plane, the effect of the tilt valve plate 11 on slowing down the falling speed of the powder decreases, and the falling speed of the powder is fast. When the tilt surface of the tilt valve plate 11 is closer to the horizontal plane, the effect of the tilt valve plate 11 on slowing down the falling speed of the powder is better, and the powder can fall slowly. In this solution, in order to ensure the normal feeding of the powder, and at the same time limit the feeding speed of the powder, the tilt angle of the tilt valve plate 11 is set to 45 degrees.

[0033] The bottom of the feeding pipe 1 is inclined, with the bottom of the feeding pipe 1 facing the same direction as the conveyor belt. The advantage of this inclined bottom is that it slows down the falling speed of the powder and also changes its falling direction, preventing the powder from impacting the belt vertically. When the powder flows out of the feeding pipe 1 at an angle, the angle between the powder's impact force on the belt and the belt is acute, resulting in a smaller impact force compared to when the powder falls vertically. This reduces the impact of the powder on the belt, lowers the belt load, and... The belt can be used normally. A hopper 12 is fixedly connected to the top of the feeding pipe 1. The hopper 12 is also composed of two arc plates, and the arc plates are fixed together. The diameter of the hopper 12 is larger than the diameter of the feeding pipe 1. The connection between the hopper 12 and the feeding pipe 1 is set at an angle. When the powder in the hopper 12 falls into the inside of the feeding pipe 1, when the powder falls from the large-diameter hopper 12 into the small-diameter feeding pipe 1, some of the powder will be blocked by the connection between the hopper 12 and the feeding pipe 1, so as to slow down the falling powder at the connection between the hopper 12 and the feeding pipe 1.

[0034] Inside the hopper 12, a discharge pipe 13 is slidably connected along its axis. The outer side of the discharge pipe 13 slides in contact with the inner wall of the hopper 12. A sealing ring is provided between the hopper 12 and the discharge pipe 13 to seal the gap between them, preventing powder from entering and affecting the sliding of the discharge pipe 13. The top of the discharge pipe 13 passes through the top of the hopper 12 and extends outward. The discharge pipe 13 is fixedly connected to the bottom of the hopper. The powder in the hopper... The material enters the hopper 12 through the discharge pipe 13. A sealing valve is installed on the discharge pipe 13. The discharge pipe 13 is opened and closed by the sealing valve to control the outflow of powder in the hopper. A vibrator (a device for generating mechanical vibration) is fixedly installed on the side wall of the feeding pipe 1 near the middle. The vibrator is existing technology and will not be described here. The vibration generated by the vibrator drives the feeding pipe 1 to vibrate. During the vibration, the feeding pipe 1 shakes the powder to prevent the powder from adhering to the inner wall of the feeding pipe 1 and to ensure the normal falling of the powder inside the feeding pipe 1.

[0035] A mounting cover plate 2 is provided on the outside of the feeding pipe 1 near the bottom. A dustproof curtain 21 is fixedly connected to the bottom edge of the mounting cover plate 2. The dustproof curtain 21 is made of soft material and its bottom contacts the belt. The mounting cover plate 2 and the dustproof curtain 21 are used to block splashed powder. During the process of the belt rotating and conveying powder, friction occurs between the belt and the bottom of the dustproof curtain 21, causing damage to the dustproof curtain 21. The staff replaces the damaged dustproof curtain 21 to improve the dustproof effect. An opening is provided near the middle of the mounting cover plate 2. Several ring-shaped rubber strips are provided inside the opening. The rubber strips contact the side wall of the feeding pipe 1 and block the gap between the inner wall of the opening and the feeding pipe 1, preventing powder from splashing above the mounting cover plate 2 through the gap between the inner wall of the opening and the feeding pipe 1. The bottom of the feeding pipe 1 passes through the opening and extends outward. A mounting mechanism 3 is provided on the mounting cover plate 2. The mounting mechanism 3 is used to install the feeding pipe 1 and adjust the distance between the bottom of the feeding pipe 1 and the belt.

[0036] When the belt conveyor transports powder from the hopper, the workers use bolts to install the mounting cover 2 on the belt conveyor. The mounting cover 2 is located above the belt, and the distance between the mounting cover 2 and the belt is less than the height of the dustproof curtain 21.

[0037] refer to Figure 6 and Figure 7The installation mechanism 3 includes an installation frame 31 fixedly connected to the installation cover plate 2. The installation frame 31 is located outside the opening. Inside the installation frame 31, two movable seats 32 are slidably connected along the axis of the installation frame 31. The two movable seats 32 are located on both sides of the feeding pipe 1. A clamping screw 37 is rotatably connected to one side of the installation frame 31 via a bearing. The clamping screw 37 passes through the side wall of the installation frame 31 and is fixed with a knob. The clamping screw 37 has two threads in opposite directions. The two movable seats 32 are threadedly connected to the two threads of the clamping screw 37. During rotation, the clamping screw 37 drives the two movable seats 32 to move closer to or further away from each other. The two movable seats 32 are provided with adjustment components. During the movement of the movable seat 32 towards the feeding pipe 1, the moving seat 32 drives the adjusting component to move and clamp the feeding pipe 1, thus ensuring a stable connection between the feeding pipe 1 and the mounting mechanism 3, and also fixing the feeding pipe 1 and the mounting cover 2. The adjusting component is used to move the feeding pipe 1 towards or away from the belt. A limit rod is fixedly connected to the side of the mounting frame 31 away from the clamping screw 37. Two movable seats 32 are slidably connected to the limit rod, which restricts the movement path of the movable seats 32, allowing them to move along the axis of the limit rod. The mounting frame 31 has several bellows covers inside, with both ends of the bellows covers fixedly connected to the side wall of the movable seat 32 and the inner wall of the mounting frame 31 (e.g., Figure 1 As shown, the movable seat 32 extends and retracts the bellows cover during movement, which prevents dust from adhering to the clamping screw 37 and the limit rod, thus preventing dust from affecting the movement of the movable seat 32.

[0038] When it is necessary to clamp the feeding tube 1, the operator turns the clamping screw 37 with an electric wrench. Under the restriction of the mounting frame 31 and the limit rod, the rotating clamping screw 37 drives the two moving seats 32 to move towards the feeding tube 1. During the movement, the moving seats 32 drive the adjusting component to move closer to the feeding tube 1, so that the adjusting component clamps the feeding tube 1.

[0039] When it is necessary to disassemble or replace the feeding tube 1, the operator uses an electric wrench to turn the clamping screw 37 in the opposite direction. During the rotation, the clamping screw 37 drives the two moving seats 32 to move away from the feeding tube 1. The moving moving seats 32 drive the adjusting component to move away from the feeding tube 1, thereby releasing the adjusting component from the clamping of the feeding tube 1, making it easier for the operator to disassemble and replace the feeding tube 1.

[0040] refer to Figure 6 and Figure 7The adjustment assembly includes a fixed plate 33 fixedly mounted on a movable base 32. A lifting shell 34 is slidably connected to the fixed plate 33 along its axial direction. A clamping block 36 is fixedly connected to the top of the lifting shell 34 near the feeding pipe 1. An adjusting screw 35 is threadedly connected to the upper side of the fixed plate 33. The top of the adjusting screw 35 passes through the top of the lifting shell 34 and is fixed with a knob. The adjusting screw 35 is rotatably connected to the top of the lifting shell 34 through a bearing. During rotation, the adjusting screw 35 drives the lifting shell 34 along the axis of the adjusting screw 35. The direction can be moved upward or downward. When it is necessary to change the distance between the feeding pipe 1 and the belt, the operator can turn the adjusting screw 35 with an electric wrench. During the rotation of the adjusting screw 35, the lifting shell 34 is driven to move away from or towards the mounting cover plate 2. During the movement, the lifting shell 34 drives the clamping block 36 to move, which in turn drives the feeding pipe 1 to move, thereby adjusting the distance between the feeding pipe 1 and the belt. This avoids the distance between the feeding pipe 1 and the belt being too far, so that the falling powder falls on the belt at a slower speed, reducing the impact of the powder on the belt.

[0041] When using this device:

[0042] When the belt conveyor needs to transport powder, the operator installs the mounting cover 2 on the belt conveyor with bolts, and then installs the mounting mechanism 3 on the mounting cover 2 with bolts. Subsequently, the operator inserts the feeding hopper 12 into the outside of the discharge pipe 13, so that the feeding pipe 1 is located between the two adjusting components, and the bottom of the feeding pipe 1 passes through the opening. At this time, the operator turns the clamping screw 37 with an electric wrench. During the rotation, the clamping screw 37 drives the two moving seats 32 and the adjusting components to move towards the feeding pipe 1. The two moving adjusting components clamp the feeding pipe 1.

[0043] Then, the staff uses an electric wrench to turn the adjusting screw 35. During the rotation, the adjusting screw 35 drives the lifting shell 34 and the clamping block 36 to move, causing the feeding pipe 1 to move closer to or further away from the belt, so as to adjust the distance between the feeding pipe 1 and the belt and maintain a suitable distance between the feeding pipe 1 and the belt.

[0044] Subsequently, the staff opened the sealing valve, allowing the powder inside the hopper to pass through the discharge pipe 13, the hopper 12, and the feeding pipe 1 and fall onto the conveyor belt. During the falling process, the powder was gradually slowed down by the hopper 12, several inclined valve plates 11, and the bottom-bent feeding pipe 1, thus preventing the powder from falling too fast and ensuring that it falls onto the conveyor belt at a slower speed, preventing the powder from splashing on the conveyor belt.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A belt feeding device with dust suppression function, comprising a feeding pipe (1), characterized in that: The inside of the feeding pipe (1) is fixedly connected with several staggered inclined valve plates (11) along the axis of the feeding pipe (1). The inclined valve plates (11) are inclined downward towards the axis of the feeding pipe (1). The inclined valve plates (11) are used to slow down the falling speed of the powder. The bottom of the feeding pipe (1) is inclined. The outer side of the feeding pipe (1) is provided with a mounting cover plate (2) near the bottom. The bottom of the mounting cover plate (2) is fixedly connected with a dustproof cloth curtain (21) near the edge. The mounting cover plate (2) and the dustproof cloth curtain (21) are used to block the splashed powder. The mounting cover plate (2) is provided with an opening through the mounting cover plate (2) near the middle. The bottom of the feeding pipe (1) extends out through the opening. The mounting cover plate (2) is provided with a mounting mechanism (3). The mounting mechanism (3) is used to install the feeding pipe (1) and adjust the distance between the bottom of the feeding pipe (1) and the belt.

2. The belt feeding device with dust suppression function according to claim 1, characterized in that: The top of the feeding pipe (1) is fixedly connected to a hopper (12). The diameter of the hopper (12) is larger than the diameter of the feeding pipe (1). The connection between the hopper (12) and the feeding pipe (1) is set at an angle. When the powder in the hopper (12) falls into the inside of the feeding pipe (1), the connection between the hopper (12) and the feeding pipe (1) slows down the falling powder.

3. The belt feeding device with dust suppression function according to claim 1, characterized in that: The installation mechanism (3) includes an installation frame (31) fixedly connected to the installation cover plate (2). The installation frame (31) is located outside the opening. Inside the installation frame (31), two movable seats (32) are slidably connected along the axis of the installation frame (31). The two movable seats (32) are located on both sides of the feeding pipe (1).

4. The belt feeding device with dust suppression function according to claim 3, characterized in that: Two movable seats (32) are provided with adjustment components. When the two movable seats (32) move toward the feeding pipe (1), the movable seats (32) drive the adjustment components to move so that they clamp the feeding pipe (1). The adjustment components are used to drive the feeding pipe (1) to move toward or away from the belt.

5. The belt feeding device with dust suppression function according to claim 4, characterized in that: The adjustment assembly includes a fixed plate (33) fixedly mounted on the movable seat (32), and a lifting shell (34) is slidably connected on the fixed plate (33) along the axial direction of the fixed plate (33). A clamping block (36) is fixedly connected to the top of the lifting shell (34) near the feeding pipe (1).

6. The belt feeding device with dust suppression function according to claim 5, characterized in that: The upper side of the fixed plate (33) is threaded with an adjusting screw (35). The top of the adjusting screw (35) passes through the top of the lifting shell (34) and is fixed with a knob. The adjusting screw (35) is rotatably connected to the top of the lifting shell (34) through a bearing. During the rotation of the adjusting screw (35), the lifting shell (34) is driven to move along the axis of the adjusting screw (35).

7. The belt feeding device with dust suppression function according to claim 3, characterized in that: One side of the mounting frame (31) is rotatably connected to a clamping screw (37) via a bearing. The clamping screw (37) has two threads in opposite directions. The two movable seats (32) are respectively threaded onto the two threads of the clamping screw (37). During rotation, the clamping screw (37) drives the two movable seats (32) to move closer to or further away from each other.

8. The belt feeding device with dust suppression function according to claim 2, characterized in that: The discharge pipe (13) is slidably connected to the inside of the hopper (12) along the axial direction of the hopper (12). The outer side of the discharge pipe (13) is in sliding contact with the inner wall of the hopper (12). The top of the discharge pipe (13) passes through the top of the hopper (12) and extends outward. The discharge pipe (13) is fixedly connected to the bottom of the silo. The powder in the silo enters the inside of the hopper (12) through the discharge pipe (13).

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