Dust control cover for belt coal chute

Abstract

The utility model discloses a belt coal chute dust control cover is provided with recessed platform on support frame, and the top cover is set up on its recessed platform, and the top cover is set up in trapezoidal shape, and the arbitrary inclined plane end of top cover is equipped with the inlet, and the left and right sides of inlet are equipped with guide rail, and the guide rail is equipped with baffle, and the left and right sides baffle between guide rail are connected through connecting plate, and the left and right sides connecting of connecting plate one end are connected with the plug -in block, and the locating slot that is mutually matched with plug -in block is equipped on connecting plate, and the through -hole is equipped on connecting plate, and the guide rod is equipped in through -hole, and the bottom end of guide rod is connected with connecting block, and the recess that is equipped on plug -in block is mutually matched and used with connecting block, and the spring is equipped between connecting block and connecting plate, and is sleeved on guide rod, and through modularization support frame and top cover, cooperate with the stable closed space that forms of baffle curtain, effectively block the impact dust that coal falls and produces, and the internal spraying system can realize directional dust suppression, and inhibit coal dust diffusion from the source, and the air dust concentration of roadway is reduced obviously.

Description

Technical Field

[0001] This utility model relates to the technical field of coal chute equipment, specifically a dust control cover for a belt conveyor coal chute. Background Technology

[0002] During coal extraction at the working face, a large amount of coal dust is generated due to impact, collision, and airflow disturbance as coal falls from a height. This coal dust quickly spreads to the surrounding roadways, not only seriously affecting visibility and threatening the normal operation of equipment, but also posing a hazard to the occupational health of on-site personnel. For a long time, in order to suppress the spread of coal dust, the usual method is to assign dedicated personnel to be responsible for dust suppression each shift, that is, to use water spraying devices to regularly spray the roadways. However, this method relies on manual operation, which not only consumes human resources and increases labor intensity, but also makes it difficult to maintain the dust suppression effect. Especially during peak coal extraction periods, the dust problem remains prominent, which restricts the goal of efficient and clean production at the working face. Utility Model Content

[0003] The purpose of this utility model is to provide a dust control cover for a conveyor belt coal chute to solve the problem that a large amount of coal dust is generated during the coal discharge process in the working face due to impact, collision and airflow disturbance when coal falls from a height. Usually, a dedicated person is assigned to clean up the dust each shift, that is, to use a water spraying device to spray the roadway regularly. However, this method relies on manual operation, which not only consumes manpower and increases labor intensity, but also makes it difficult to maintain the dust suppression effect. Especially during the peak coal discharge period, the dust problem is still prominent.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a dust control hood for a conveyor belt coal chute, comprising a support frame, a top cover, baffles, and a connecting device. The support frame is U-shaped, with its two vertical ends connected to the ground, and a recessed platform at the top of its horizontal end. The top cover is mounted on the recessed platform. The top cover is trapezoidal, with a feed inlet on any inclined end. Guide rails are provided on the left and right sides of the feed inlet, and baffles are provided on the guide rails. The left and right guide rails are connected by a connecting plate, and a connecting device is provided on the guide rails. The connecting device includes an insert block, a guide rod, a connecting block, and a spring. The baffle is located on one end of the connecting plate and the left and right sides are connected to the insert blocks. The connecting plate has a positioning groove that cooperates with the insert blocks. The connecting plate has a through hole, and the guide rod is installed in the through hole. The bottom end of the guide rod is connected to the connecting block. The connecting block and the groove on the insert block cooperate with each other. A spring is installed between the connecting block and the connecting plate, and is sleeved on the guide rod. One end of the spring abuts against the connecting plate, and the other end abuts against the limiting baffle at the top of the guide rod.

[0005] Preferably, the front and rear ends of the support frame are respectively provided with a plurality of curtains, the curtains are provided with through holes, and a positioning screw is provided in the through holes. The positioning screw passes through the curtain and the other end is screwed into the internal thread hole of the support frame.

[0006] Preferably, a spray frame is provided at the end of the top cover away from the feed inlet, with the spray frame facing the cut-off end of the feed inlet. The water inlet end of the spray frame is connected to an external water source through a water inlet pipe, and a one-way valve is connected to the water inlet pipe.

[0007] Preferably, the left and right ends of the support frame are connected to a limiting device, including a mounting frame, a positioning frame, a sliding rod, and a limiting block. The positioning frame is connected to the top cover and is L-shaped. The mounting frame is U-shaped, with its vertical ends connected to the support frame and several through holes on its horizontal ends. A sliding rod is inserted into each through hole. The top end of the sliding rod is connected to a limiting block and cooperates with the L-shaped end of the positioning frame. The other end is connected by a pull plate. A return spring is provided between the limiting block and the mounting frame, with both ends of the return spring abutting against the limiting block and the mounting frame, respectively.

[0008] Preferably, the lateral end of the positioning frame and the contact end of the limiting block are arranged at an angle.

[0009] Preferably, a sealing strip is provided at the contact end between the top cover and the support frame.

[0010] Preferably, the bottom end of the feed inlet is provided with a discharge sleeve, the bottom end of which extends to the top of the conveyor belt.

[0011] Compared with the prior art, the beneficial effects of this utility model are: The modular support frame and top cover, combined with the baffle curtain, form a stable enclosed space, effectively blocking the impact dust generated when coal falls. The internal spray system can achieve directional dust suppression, inhibiting the spread of coal dust at the source, significantly reducing the concentration of air dust in the roadway, improving visibility, and ensuring the health of personnel and the safe operation of equipment. The fully enclosed design, while suppressing dust, also reduces secondary risks caused by water accumulation, slipping, and material splashing. The device is highly compatible with the existing coal chute system and does not affect the normal coal output process, providing reliable technical support for achieving efficient, clean, and safe production at the working face. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 This is a schematic diagram showing the disassembled structure of the support frame and top cover of this utility model.

[0014] Figure 3 This is a schematic diagram of the top cover structure of this utility model.

[0015] Figure 4 This is a schematic diagram of the limiting device structure of this utility model.

[0016] Figure 5 For the present utility model Figure 3 Schematic diagram of the structure at point A.

[0017] Figure 6 This is a schematic diagram showing the disassembled installation structure of the curtain according to this utility model.

[0018] In the diagram: 1. Support frame; 2. Top cover; 3. Limiting device; 301. Positioning frame; 302. Sliding rod; 303. Limiting block; 4. Baffle; 5. Connecting device; 501. Insert block; 502. Guide rod; 503. Connecting block; 504. Spring; 6. Curtain; 7. Water inlet pipe. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] 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.

[0023] Example 1: Please refer to Figure 1-6 This utility model provides an embodiment of a dust control hood for a conveyor belt coal chute, comprising a support frame 1, a top cover 2, a baffle 4, and a connecting device 5. The support frame 1 is U-shaped, with its two vertical ends connected to the ground, serving as the basic load-bearing structure of the entire device and providing a mounting base for all components such as the top cover 2 and the baffle 6. The U-shaped design ensures structural stability and reasonable stress distribution. The fixation of both sides to the ground effectively resists material impact and vibration, ensuring overall stability. A recessed platform is provided at the top of the horizontal end, on which the top cover 2 is mounted. The trapezoidal design provides more... The large internal space facilitates the installation of the spray frame and discharge sleeve, preventing dust from escaping upwards and outwards. The modular design facilitates installation and disassembly. The top cover 2 is trapezoidal, with a feed inlet on any inclined end. Guide rails are located on both sides of the feed inlet, and baffles 4 are installed on the guide rails. Baffles 4 can be opened or closed as needed to control material flow and observe the working condition. Baffles 4 can be opened when handling large materials or for maintenance. The left and right guide rails are connected by a connecting plate, and connecting devices 5 are installed on the guide rails. The connecting device 5 includes an insert block 501, a guide rod 502, a connecting block 503, and a spring 504. The baffle 4 is located at one end of the connecting plate, with insert blocks 501 connected to both sides. Insertion blocks 501 are inserted into positioning grooves for initial positioning. The connecting plate has positioning grooves that cooperate with the insert blocks 501. A through hole is formed in the connecting plate, and the guide rod 502 is placed inside the through hole. The bottom end of the guide rod 502 is connected to the connecting block 503, which, under the push of the guide rod 502, engages with the groove of the insert block 501, completing the locking. During connection, the insert block 501 is inserted into the positioning groove, and simultaneously, the top end of the baffle 4 abuts against and adheres to the connecting plate. Then, the guide rod 502 is pressed. Simultaneously, the spring 504 is compressed, and the extension on the outer circumference of the connecting block 503 is inserted into the groove on the insert block 501. Then, the guide rod 502 is rotated, and the extension on the connecting block 503 rotates and fits against the inner wall of the groove in the insert block 501. Then, the guide rod 502 is released, and the guide rod 502 is reset by the force of the spring 504, further fitting and contacting the extension on the connecting block 503 against the inner wall of the groove. The grooves on the connecting block 503 and the insert block 501 cooperate with each other. A spring 504 is provided between the connecting block 503 and the connecting plate, sleeved on the guide rod 502, with one end abutting against the connecting plate. The first end of the support frame 1 contacts the guide rod 502, and the second end contacts the limit baffle at the top. Several baffles 6 are provided on the front and rear sides of the support frame 1. They are made of plastic, have a flexible design that does not hinder production, and are easy to disassemble. The bottom of the baffles is equipped with a counterweight and is suspended in front and behind the support frame 1. They allow the belt and materials to pass through and can effectively block dust from spreading from the front and rear. The baffles 6 have through holes with positioning screws inside. The positioning screws pass through the baffles 6 and the other end is screwed into the internal threaded hole on the support frame 1. A spray frame is provided at the end of the top cover 2 away from the feed inlet. By spraying water mist onto the drop point, the dust particles are moistened and weighted up, thus preventing them from flying away. The spray frame faces the cutoff end of the feed inlet. A discharge sleeve is installed at the bottom of the feed inlet, extending to the top of the conveyor belt. The discharge sleeve further gathers and guides the material, preventing dust generation during the final drop of the coal and ensuring the material accurately lands in the center of the belt, preventing deviation and spillage. The spray nozzles spray towards the discharge end of the discharge sleeve, precisely targeting the dust source with high water efficiency. The water inlet of the spray frame is connected to an external water source via water inlet pipe 7, which is equipped with a one-way valve. A sealing strip is installed at the contact end between the top cover 2 and the support frame 1 to fill the gaps. During installation, first, place the top cover 2 on the recessed platform of the support frame 1, then install the curtain 6. When it is necessary to close the inlet, push the baffle 4, and the insert block 501 is inserted into the positioning groove to achieve initial positioning. The top of the baffle 4 abuts against the connecting plate. Then, press the guide rod 502, and at the same time compress the spring 504. The extension on the outer circumference of the connecting block 503 is inserted into the groove on the insert block 501. Then, rotate the guide rod 502, and at the same time, the extension on the connecting block 503 is inserted into the groove in the insert block 501. The wall is rotated to fit, and then the guide rod 502 is released. The guide rod 502 is reset by the force of the spring 504, and the extension on the connecting block 503 is further fitted and pressed against the inner wall of the groove. When it is necessary to open the feed port or for maintenance, first press the guide rod 502 to compress the spring 504, then rotate the guide rod 502 to align the extension on the connecting block 503 with the groove on the insert block 501, then release the guide rod 502, move the connecting block 503 away from the insert block 501 to complete the unlocking, and then slide the baffle 4.

[0024] Example 2: Please refer to Figure 1-4 Based on Example 1, it also has the following structure: Limiting devices 3 are connected to the left and right ends of the support frame 1 to securely lock the top cover 2 onto the support frame 1, preventing it from shifting or tilting. The support frame includes a mounting bracket, a positioning bracket 301, a sliding rod 302, and a limiting block 303. The positioning bracket 301 is connected to the top cover 2 in an L-shape and fixed to the top cover 2, with its horizontal end facing the bottom of the top cover 2. The mounting bracket is U-shaped, with its two vertical ends connected to the support frame 1. Several through holes are provided on its horizontal ends, and the sliding rod 302 is inserted into these holes. By manually pulling the sliding rod 302, the limiting block 303 moves left and right. The top of the sliding rod 302 is connected to the limiting block 303. It works in conjunction with the L-shaped end of the positioning bracket 301, and the other end is connected via a pull plate. A return spring is provided between the limiting block 303 and the mounting bracket to provide lateral force, ensuring that the limiting block 303 remains locked when no force is applied. The two ends of the return spring abut against the limiting block 303 and the mounting bracket, respectively. The lateral end of the positioning bracket 301 and the contact end of the limiting block 303 are set at an angle. The angled design allows the limiting block 303 to move along the angled end when the top cover 2 is installed. Simply pressing down will automatically push the limiting block 303 open and lock it into place, achieving self-locking quick installation. Disassembly only requires pulling the pull plate. When the top cover 2 is installed, the positioning frame 301 on the top cover 2 abuts against the limiting block 303. At the same time, the limiting block 303 can move along the inclined end, synchronously pushing the slide rod 302 to slide and squeezing the return spring. When the limiting block 303 slides between the vertical end and the horizontal end of the positioning frame 301, the limiting block 303 is reset by the force of the return spring, and the positioning frame 301 is limited at the same time.

[0025] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not described in detail here. It will be apparent to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A dust control hood for a conveyor belt coal chute, characterized in that: The device includes a support frame (1), a top cover (2), a baffle (4), and a connecting device (5). The support frame (1) is U-shaped, with its two vertical ends connected to the ground and a recessed platform on the top of its horizontal end. The top cover (2) is mounted on the recessed platform. The top cover (2) is trapezoidal, with an inlet on any inclined end of the top cover (2). Guide rails are provided on the left and right sides of the inlet, and baffles (4) are provided on the guide rails. The left and right guide rails are connected by a connecting plate, and a connecting device (5) is provided on the guide rails. The connecting device (5) includes a plug (501), a guide rod (502), a connecting block (503), and a spring (504). The baffle (4) is located on one end of the connecting plate and connected to the plug (501) on both sides. The connecting plate has a positioning groove that cooperates with the plug (501). The connecting plate has a through hole, and the guide rod (502) is provided in the through hole. The bottom end of the guide rod (502) is connected to the connecting block (503). The connecting block (503) and the groove on the plug (501) cooperate with each other. The connecting block (503) and the connecting plate are provided with a spring (504), which is sleeved on the guide rod (502). One end of the spring abuts against the connecting plate, and the other end abuts against the limiting baffle at the top of the guide rod (502).

2. The dust control hood for a conveyor belt chute according to claim 1, characterized in that: The front and rear ends of the support frame (1) are respectively provided with several curtains (6). The curtains (6) are pre-set with through holes. The through holes are provided with positioning screws. The positioning screws pass through the curtains (6) and the other end is screwed into the pre-set internal thread hole on the support frame (1).

3. The dust control hood for a conveyor belt chute according to claim 1, characterized in that: A spray frame is provided at the end of the top cover (2) away from the feed inlet. The spray frame faces the cut-off end of the feed inlet. The water inlet end of the spray frame is connected to an external water source through a water inlet pipe (7). A one-way valve is connected to the water inlet pipe (7).

4. The dust control hood for a conveyor belt chute according to claim 1, characterized in that: The support frame (1) is connected to the left and right ends of the limiting device (3), including the mounting frame, the positioning frame (301), the slide rod (302), and the limiting block (303). The positioning frame (301) is connected to the top cover (2) and is L-shaped. The mounting frame is U-shaped, with its two vertical ends connected to the support frame (1) and several through holes opened on the horizontal end. The slide rod (302) is inserted into the through holes. The top end of the slide rod (302) is connected to the limiting block (303) and cooperates with the L-shaped end of the positioning frame (301). The other end is connected by a pull plate. A return spring is provided between the limiting block (303) and the mounting frame. The two ends of the return spring abut against the limiting block (303) and the mounting frame, respectively.

5. The dust control hood for a conveyor belt chute according to claim 4, characterized in that: The lateral end of the positioning frame (301) and the contact end of the limiting block (303) are set at an angle.

6. The dust control hood for a conveyor belt chute according to claim 1, characterized in that: A sealing strip is provided at the contact end between the top cover (2) and the support frame (1).

7. The dust control hood for a conveyor belt chute according to claim 1, characterized in that: The bottom end of the feed inlet is provided with a discharge sleeve, and the bottom end of the discharge sleeve extends to the top of the conveyor belt.

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