Blockage removing and preventing three-way structure for coal conveying and transferring

Abstract

The unblocking and anti-blocking three-way structure comprises a three-way shell, guiding sliding grooves are formed in the positions, close to the inner side inner walls, of the tops and the surface inner walls of two branch channels of the three-way shell in the extending direction in a penetrating mode, and inserting plates are connected into the upper guiding sliding groove and the lower guiding sliding groove in a sliding mode. Each inserting plate is connected with a telescopic driving device, wear-resisting plates are detachably connected to the inner wall of each side of the three-way shell and the surface of one side of each inserting plate, an inner sealing structure and an outer sealing structure are arranged on the inner side and the outer side of each guiding sliding groove correspondingly, and the inserting plates are driven by the telescopic driving devices to move in a reciprocating mode. According to the three-way valve, material distribution can be achieved, caking coal can be removed through friction between the wear-resisting plate and the inner wall of the three-way valve, the functions of distribution, blockage removal and blockage prevention are achieved, the continuity, safety and operation efficiency of a coal conveying system are improved, the maintenance cost is reduced, and the three-way valve is suitable for various working conditions.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal conveying and transferring field, specifically, relate to a kind of clear blockage and prevent blockage tee structure for coal conveying and transferring. BACKGROUND

[0002] Traditional tee material distributor is prone to be coal blocking point in coal conveying and transferring station, kinetic energy of coal flow is weakened at tee, coal powder is easily adhered to flap and inner wall and gradually accumulated and blocked, which requires shutdown cleaning, resulting in interruption of coal conveying system, affecting boiler operation efficiency, and high cost of manual maintenance and low safety.At the same time, the traditional tee only has material shunting function, lacks dynamic unblocking mechanism, and cannot meet the continuous coal conveying demand under high viscosity coal quality or complex working condition.

[0003] How to invent a kind of clear blockage and prevent blockage tee structure for coal conveying and transferring to improve these problems has become a problem to be solved by the skilled in the art. UTILITY MODEL CONTENT

[0004] In order to make up for the above shortcomings, the utility model provides a kind of clear blockage and prevent blockage tee structure for coal conveying and transferring, which aims at improving the problems of traditional tee material distributor, such as blocking, shutdown cleaning, reducing filtration operation efficiency, lacking unblocking mechanism and being unable to meet the continuous coal conveying demand under high viscosity coal quality or complex working condition.

[0005] The utility model is realized as follows: a kind of clear blockage and prevent blockage tee structure for coal conveying and transferring, including tee shell, two branch channels of the tee shell top and surface inner wall are extended along the direction of inner wall exit and are provided with guide sliding slot, the guide sliding slot of the upper and lower two corresponding is slidably connected with plug, each plug is connected with telescopic drive device, each side inner wall of the tee shell and the surface of one side of each plug are detachably connected with wear plate, the inner side and the outer side of each guide sliding slot are respectively provided with inner sealing structure and outer sealing structure.

[0006] In a preferred technical scheme of the utility model, the outer surface of the two branch channels of the tee shell is provided with an access hole, and the access hole is rotatably connected with an access door, and the access door is provided with a sealing structure and a locking structure.

[0007] In a preferred technical scheme of the utility model, the upper and lower ends of one side surface of the plug are rotatably installed with a drag wheel, and each drag wheel is rotatably connected with the corresponding top or bottom inner wall of the branch channel of the tee shell.

[0008] In a preferred technical scheme of the utility model, the extension connecting part is slidably connected in the corresponding guide sliding groove and is hingedly connected with the piston rod of the corresponding telescopic driving device through the corresponding outer sealing structure, and the other end of each telescopic driving device is connected with the top or bottom surface of the tee shell through the hinge structure.

[0009] In a preferred technical scheme of the utility model, two groups of limiting block wheels are rotatably installed on the top and bottom inner walls of the communication part of the main channel and branch channel of the tee shell, the number of the two groups of limiting block wheels is multiple and is symmetrically distributed along the center line of the tee shell, and the multiple limiting block wheels of each group are consistent with the extension direction of the inner wall of the inner side of the opposite branch channel and are on the same straight line.

[0010] In a preferred technical scheme of the utility model, a plurality of installation grooves are formed on the top and bottom inner walls of the communication part of the main channel and branch channel of the tee shell, a flat nozzle is fixedly installed in each installation groove, and each flat nozzle is connected with the gas supply device.

[0011] In a preferred technical scheme of the utility model, the inner sealing structure comprises an installation plate, the installation plate is detachably connected on the top or bottom inner wall of the tee shell outside the corresponding guide sliding groove and is arranged in parallel with the guide sliding groove through a fastener, a convex strip is integrally formed on the upper surface of the installation plate near the side of the corresponding guide sliding groove, and the convex strip and the upper surface of the installation plate are connected through a guide inclined surface.

[0012] In a preferred technical scheme of the utility model, the outer sealing structure comprises an installation base, the installation base is detachably installed on the top or bottom surface of the two branch channels of the tee shell and is distributed in the same position as the corresponding guide sliding groove through a fastener, a containing through groove is formed in the installation base from the top to the bottom surface and has the same direction and area as the corresponding guide sliding groove, and rubber blocking strips are fixedly connected on the inner walls of the two sides of the containing through groove and are staggered.

[0013] The utility model discloses a kind of beneficial effects: the utility model obtains a kind of clear blockage prevention tee structure for coal conveying and transfer by the above design, when using, reciprocating motion is driven under the telescopic driving device by plugboard, not only can accurately close one side branch channel and realize material distribution, but also can remove sticky coal by the friction of wear plate and tee inner wall, and the surface of plugboard is cleaned by coal extrusion coal function, realizes distribution and blockage prevention function, avoids the situation that coal needs to be stopped and cleaned when plugging, improves the continuity, security and operating efficiency of coal conveying system, reduces maintenance cost and adapts to multiple working conditions. BRIEF DESCRIPTION OF DRAWINGS

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0015] Figure 1 This is a schematic perspective view of the overall structure provided by the embodiment of this utility model;

[0016] Figure 2 A three-dimensional schematic cross-sectional view of the overall structure provided for the embodiments of this utility model;

[0017] Figure 3 A perspective view of the overall cross-sectional structure on the other side of this utility model embodiment;

[0018] Figure 4 A perspective view of the overall cross-sectional structure of the three-way housing provided for an embodiment of this utility model;

[0019] Figure 5 A perspective view of the overall structure of the insert plate provided for an embodiment of this utility model;

[0020] Figure 6 A three-dimensional schematic diagram of the overall structure of the internal sealing structure provided for an embodiment of this utility model;

[0021] Figure 7 A three-dimensional schematic diagram of the overall structure of the external sealing structure provided for an embodiment of this utility model.

[0022] In the diagram: 1-Tee housing; 2-Insert plate; 3-Telescopic drive device; 4-Wear-resistant plate; 5-Inner sealing structure; 6-Outer sealing structure; 7-Inspection door; 101-Guide groove; 102-Inspection port; 103-Limiting wheel; 104-Flat nozzle; 201-Extension connection; 202-Drag wheel; 501-Mounting plate; 502-Protruding strip; 503-Guide slope; 601-Mounting base; 602-Accommodating groove; 603-Rubber stop strip. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] Please see Figures 1 to 7 This utility model provides a technical solution: a coal conveying and conversion anti-blocking three-way structure, including a three-way shell 1, and guide grooves 101 extending through the top and inner wall of the two branch channels of the three-way shell 1 near the inner wall along the extension direction. Insert plates 2 are slidably connected in the two corresponding guide grooves 101. Each insert plate 2 is connected to a telescopic drive device 3. Wear-resistant plates 4 are detachably connected to the inner wall of each side of the three-way shell 1 and the surface of each insert plate 2. An inner sealing structure 5 and an outer sealing structure 6 are respectively provided on the inner and outer sides of each guide groove 101.

[0025] It should be noted that the area of ​​each insert plate 2 is larger than the cross-sectional area of ​​the connection between the main channel and the branch channel of the tee shell 1. When the insert plate 2 moves to the connection point under the action of the telescopic drive device 3 (such as a hydraulic cylinder), the part of it that exceeds the cross-section of the connection point can completely cover and close the entrance of one side of the branch channel. By blocking the coal flow channel on that side, the material is forced to flow out from the other side of the branch channel, thereby achieving precise diversion. At the same time, the large area design of the insert plate 2 allows it to fully contact the inner wall of the tee during reciprocating motion, ensuring the effective scraping of coal adhering to the inner wall during the unblocking process, thus achieving the synergistic realization of the diversion function and the unblocking effect.

[0026] Please see Figures 1 to 4 The outer surfaces of the two branch channels of the three-way housing 1 are provided with inspection ports 102. Each inspection port 102 is rotatably connected to an inspection door 7. The inspection door 7 is provided with a sealing structure and a locking structure around its perimeter.

[0027] The access door 7 is rotatably connected to the tee housing 1 via a hinge. A sealing structure (such as a rubber sealing ring) is embedded in the groove on the edge of the access door 7, and a locking structure (such as a latch lock) is fixed to the surfaces of the access door 7 and the tee housing 1. During use, when the wear-resistant plate 4 wears or the sealing structure fails, the locking structure can be opened to access the access door 7 for replacement and maintenance of internal components without disassembling the entire tee housing 1. This provides a convenient access for equipment maintenance, the sealing structure ensures no coal dust leakage at the access port, and the locking structure ensures the stability of the access door 7 during operation, reducing downtime for maintenance, improving equipment maintainability, and ensuring continuous system operation.

[0028] Please see Figure 1 and Figure 5 Both ends of the upper and lower surfaces of the insert plate 2 are rotatably mounted with rollers 202, and each roller 202 is rolledly connected to the corresponding top or bottom inner wall of the branch channel of the tee housing 1.

[0029] The towing wheel 202 is mounted on a bracket on the surface of the insert plate 2 via a pin, allowing it to rotate freely. Its wheel surface contacts the inner wall of the tee housing 1, forming a rolling friction pair. During use, when the telescopic drive device 3 pushes the insert plate 2, the towing wheel 202 rolls on the inner wall of the tee housing 1, converting the sliding friction between the insert plate 2 and the inner wall into rolling friction, significantly reducing motion resistance. This reduces the frictional force during the movement of the insert plate 2, making its reciprocating motion smoother, reducing the load on the hydraulic system, extending the service life of the cylinder and the insert plate 2, while simultaneously improving unblocking efficiency and ensuring stable and reliable unblocking operation.

[0030] Furthermore, an extension connection 201 is integrally provided on one end of the top and bottom surfaces of the insert plate 2. Each extension connection 201 is slidably connected in the corresponding guide groove 101 and passes through the corresponding outer sealing structure 6 and is hinged to one end of the piston rod of the corresponding telescopic drive device 3. The other end of each telescopic drive device 3 is connected to the top or bottom surface of the three-way housing 1 through the hinge structure.

[0031] The extension connection 201 is a flat plate structure extending outward from the edge of the insert plate 2. Its width is adapted to the guide groove 101. The outer sealing structure 6 allows the extension connection 201 to pass through and maintain a seal. The piston rod of the telescopic drive device 3 is hinged to the extension connection 201 via a pin, and the cylinder body is hinged to the tee housing 1 via an ear plate. During use, when the piston rod of the telescopic drive device 3 extends or retracts, it drives the extension connection 201 to slide within the guide groove 101 through the hinge point, thereby driving the overall movement of the insert plate 2. The hinge structure allows for a certain angular offset to compensate for installation errors. This connection method ensures that the driving force is evenly transmitted to the insert plate 2, guaranteeing smooth movement of the insert plate 2 and avoiding jamming problems caused by rigid connections. At the same time, the outer sealing structure 6 seals the penetration point of the extension connection 201 to prevent coal dust leakage and improve system reliability.

[0032] Please see Figure 4 Two sets of limiting wheels 103 are rotatably installed on the top and bottom inner walls of the connection between the main channel and the branch channel of the tee housing 1. There are multiple sets of limiting wheels 103, which are symmetrically distributed around the center line of the tee housing 1. Each set of multiple limiting wheels 103 extends in the same direction as the inner wall of the opposite branch channel and is in the same straight line.

[0033] The limiting rollers 103 are mounted on a bracket on the inner wall of the tee housing 1 via bearings, allowing free rotation. Each set of limiting rollers 103 is arranged symmetrically on both sides of the main channel along the extension direction of the branch channel. During use, when the insert plate 2 moves to the closed branch channel, one side surface of the insert plate 2 contacts the limiting roller 103. The limiting roller 103 rolls to support the insert plate 2, limiting its lateral displacement, while also bearing the lateral pressure of the coal flow on the insert plate 2. This ensures the accurate positioning of the insert plate 2 when switching material flow directions, preventing displacement or jamming of the insert plate 2 due to coal flow impact, ensuring stable and reliable diversion function, and reducing wear due to rolling contact, thus extending the service life of the limiting components.

[0034] Furthermore, multiple mounting slots are provided on the top and bottom inner walls of the connection between the main channel and the branch channel of the three-way housing 1. A flat nozzle 104 is fixedly installed in each mounting slot, and each flat nozzle 104 is connected to the gas supply device.

[0035] The installation slots are located at the corners of the connecting points where coal easily accumulates. Flat nozzles 104 are fixed in the installation slots by threads or clamps. An air supply device (such as an air pump or pulse valve) is connected to the flat nozzles 104 via a pipe. During use, when a stronger unblocking effect is needed, the air supply device sprays high-pressure airflow through the flat nozzles 104. The airflow, in a flat shape, covers the surface of the insert plate 2 and the corners of the tee's inner wall, blowing away adhering coal dust. Utilizing fluid dynamics principles, pulse purging assists mechanical unblocking, cleaning hard-to-reach areas and improving the thoroughness of unblocking. This method is suitable for highly viscous coal or complex working conditions, reducing coal residue and further lowering the risk of coal blockage.

[0036] Please see Figure 6 Each inner sealing structure 5 includes a mounting plate 501. The mounting plate 501 is detachably connected to the inner wall of the top or bottom of the tee housing 1 by fasteners. It is located outside the corresponding guide groove 101 and is parallel to it. The upper surface of the mounting plate 501 is integrally formed as a protrusion 502 near the corresponding guide groove 101. The protrusion 502 and the upper surface of the mounting plate 501 are connected and transitioned through the guide slope 503.

[0037] Mounting plate 501 is bolted to the inner wall of tee housing 1. The protruding strip 502 is made of rubber or elastic material, and the guide slope 503 faces away from the guide groove 101. When the insert plate 2 moves, the protruding strip 502 is compressed and deformed to fit against the side of the insert plate 2, and the guide slope 503 guides the coal powder away from the sealing area. During use, one side surface of the protruding strip 502 adheres to the surface of the insert plate 2 to form a seal, preventing coal powder from overflowing from the inner gap. This achieves dynamic sealing, effectively preventing coal powder leakage. The detachable mounting plate 501 facilitates the replacement of sealing components, improving sealing reliability and maintenance convenience.

[0038] Please see Figure 7Each outer sealing structure 6 includes a mounting base 601. The mounting base 601 is detachably mounted on the top or bottom surface of the two branch channels of the tee housing 1 by fasteners and is distributed in the same position as the corresponding guide groove 101. The mounting base 601 has a receiving groove 602 with the same direction and area as the corresponding guide groove 101 through the top to the bottom surface. Rubber baffles 603 are fixedly connected to the inner walls on both sides of the receiving groove 602.

[0039] The mounting base 601 is bolted to the outer surface of the tee housing 1. The receiving groove 602 is aligned with the guide groove 101. Rubber baffles 603 are fixed to the inner wall of the receiving groove 602 in an alternating pattern, with their free edges inclined towards the center. During use, when the extension connection 201 of the insert plate 2 passes through the receiving groove 602, the rubber baffles 603 elastically conform to the surface of the extension connection 201, forming a multi-layer sealing barrier to prevent coal dust from escaping from the outer gaps. The alternating distribution of rubber baffles 603 enhances the sealing effect, the elastic material adapts to the displacement of the insert plate 2 during movement, the detachable mounting base 601 facilitates baffle replacement, and the outer sealing structure 6 cooperates with the inner sealing structure 5 to form a double sealing system, reducing coal dust leakage and ensuring a safe production environment and stable equipment operation.

[0040] Working principle: The insert plate 2 inside the three-way housing 1 moves back and forth linearly through the guide slide 101 under the drive of the telescopic drive device 3. The wear-resistant plate 4 on its surface rubs against the inner wall of the three-way to remove the coal stuck in it. At the same time, the coal squeezing action is used to clean the coal stuck in the insert plate. The support roller 202 reduces the movement resistance and provides support. The limit stop roller 103 restricts the deviation of the insert plate. The inner sealing structure 5 and the outer sealing structure 6 prevent coal powder from overflowing. The inspection door 7 facilitates the maintenance of wear-resistant plates and other components. The flat nozzle 104 can assist in blowing and clearing blockages, thereby realizing the dual functions of material diversion and dynamic clearing and anti-blocking, ensuring the continuous and stable operation of the coal conveying system.

[0041] It should be noted that the specific model and specifications of the telescopic drive device 3 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0042] The power supply and principle of the telescopic drive device 3 are clear to those skilled in the art and will not be described in detail here.

[0043] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A coal conveying and conversion unblocking and anti-blocking three-way structure, characterized in that, The device includes a three-way housing. Guide grooves are provided on the top and inner walls of the two branch channels of the three-way housing, near the inner wall, extending along the extension direction. Insert plates are slidably connected in the two corresponding guide grooves. Each insert plate is connected to a telescopic drive device. Wear-resistant plates are detachably connected to the inner wall of each side of the three-way housing and to one side of each insert plate. An inner sealing structure and an outer sealing structure are respectively provided on the inner and outer sides of each guide groove.

2. The coal conveying and conversion unblocking / anti-blocking three-way structure as described in claim 1, characterized in that: The outer surfaces of the two branch channels of the three-way housing are provided with inspection ports, and each inspection port is rotatably connected to an inspection door. The inspection door is provided with a sealing structure and a locking structure around its perimeter.

3. The coal conveying and conversion unblocking / anti-blocking three-way structure as described in claim 1, characterized in that: Both ends of one side surface of the insert plate are rotatably mounted with rollers, and each roller is rolledly connected to the top or bottom inner wall of the branch channel of the three-way housing.

4. The coal conveying and conversion unblocking / anti-blocking three-way structure as described in claim 1, characterized in that: The top and bottom surfaces of the insert plate are integrally provided with an extension connection part. Each extension connection part is slidably connected in the corresponding guide groove and passes through the corresponding outer sealing structure and is hinged to one end of the piston rod of the corresponding telescopic drive device. The other end of each telescopic drive device is connected to the top or bottom surface of the tee housing through a hinge structure.

5. The coal conveying and conversion unblocking / anti-blocking three-way structure as described in claim 1, characterized in that: Two sets of limiting wheels are rotatably installed on the top and bottom inner walls of the connection between the main channel and the branch channel of the tee shell. There are multiple limiting wheels in the two sets, which are symmetrically distributed around the center line of the tee shell. The multiple limiting wheels in each set are aligned with the inner wall of the opposite branch channel and are on the same straight line.

6. The coal conveying and conversion unblocking / anti-blocking three-way structure as described in claim 1, characterized in that: Multiple mounting slots are provided on the top and bottom inner walls of the connection between the main channel and the branch channel of the three-way housing. A flat nozzle is fixedly installed in each mounting slot, and each flat nozzle is connected to the gas supply device.

7. The coal conveying and conversion unblocking / anti-blocking tee structure as described in claim 1, characterized in that: Each of the inner sealing structures includes a mounting plate, which is detachably connected to the inner wall of the top or bottom of the tee housing by fasteners and is located outside and parallel to the corresponding guide groove. The upper surface of the mounting plate is integrally formed as a raised strip near the corresponding guide groove, and the raised strip is connected to the upper surface of the mounting plate by a guide slope.

8. The coal conveying and conversion unblocking / anti-blocking three-way structure as described in claim 1, characterized in that: Each of the external sealing structures includes a mounting base, which is detachably mounted on the top or bottom surface of the two branch channels of the tee housing by fasteners and distributed in the same position as the corresponding guide groove. The mounting base has a receiving groove with the same orientation and area as the corresponding guide groove through its top to bottom surface. Rubber baffles are fixedly connected to the inner walls on both sides of the receiving groove.

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