Wear-resistant slag outlet gate of screw conveyor

Abstract

The utility model discloses a kind of wear-resistant slag outlet doors of screw conveyer, belong to screw conveyer technical field, including the installation port being set on the both sides of opening, cleaning assembly is set in the installation port, the cleaning assembly includes V-shaped frame, connecting block and cleaning brush, the connecting block is fixedly connected between the bottom of V-shaped frame and cleaning brush, the other end of the cleaning brush is pressed on wear plate, the both sides of V-shaped frame are fixedly provided with positioning strip, the both sides of installation port are set with positioning groove, the positioning strip is tightly pressed in positioning groove, the utility model has the advantage of improving the service life of wear plate.

Description

Technical Field

[0001] This utility model relates to the field of screw conveyor technology, specifically to a wear-resistant slag discharge gate for a screw conveyor. Background Technology

[0002] The muck discharge gate of a tunnel boring machine (TBM) is a key component for controlling the discharge of excavated soil during TBM construction. It is primarily located at the outlet of the screw conveyor or on the muck discharge pipe, regulating the discharge speed and flow rate to maintain pressure balance within the excavation chamber and prevent surface subsidence or collapse. In earth pressure balance (EPB) TBMs, the opening and closing degree of the muck discharge gate ensures a balance between earth pressure and ground pressure within the excavation chamber. In case of emergencies, it can be quickly closed to prevent backflow of mud, water, or excavated soil.

[0003] Typically, a slag discharge gate includes a frame, wear-resistant plates, telescopic components, and a drive device. One end of the wear-resistant plate is attached to the telescopic component by screws, and the other end of the wear-resistant plate is slidably connected to the frame. The drive frame provides power to the telescopic rod, allowing the wear-resistant plate to slide within the frame. An opening for the entry and exit of slag and soil is provided in the middle of the frame. During use, the size of the opening is adjusted by sliding the frame, allowing slag and mud to be discharged through the opening.

[0004] However, because the slag discharge gate comes into contact with the soil, the gap between the wear-resistant plate and the frame will be affected by the slag and soil when the slag discharge gate is opened and closed, resulting in strong friction and serious wear of the wear-resistant plate.

[0005] Based on this, this utility model designs a wear-resistant slag discharge gate for a screw conveyor to solve the above problems. Utility Model Content

[0006] To achieve the above objectives, the present invention provides the following technical solution: Installation openings are provided on both sides of the opening, and a cleaning component is provided in the installation opening. The cleaning component includes a V-shaped frame, a connecting block, and a cleaning brush. The connecting block is fixedly connected between the bottom of the V-shaped frame and the cleaning brush. The other end of the cleaning brush abuts against a wear-resistant plate. Positioning strips are fixedly provided on both sides of the V-shaped frame, and positioning grooves are provided on both sides of the installation opening, with the positioning strips abutting against the positioning grooves.

[0007] By adopting the above technical solution, when the slag discharge gate is opened and the wear-resistant plate slides in the frame, the mixture of slag and mud will pass through the cleaning brush first. The cleaning brush will block most of the slag, reducing the amount of slag entering the gap between the wear-resistant plate and the frame. This reduces the friction between the wear-resistant plate and the frame, reduces the wear of the wear-resistant plate, and improves its service life.

[0008] Preferably, a reinforcing rib is fixedly provided at the connection between the V-shaped frame and the positioning strip, and a pressing block is fixedly provided on the reinforcing rib, with the other end of the pressing block extending above the mounting opening.

[0009] By adopting the above technical solution, the pressing blocks on both sides are pressed towards the side closer to each other, so that the two sides of the V-shaped plate fit together and the positioning strip leaves the positioning groove. At this time, the pressing block is lifted upward, and the cleaning component can be quickly removed from the installation port. The quick disassembly and assembly are achieved through the cooperation of the positioning strip and the positioning groove, enabling quick maintenance of the cleaning component.

[0010] Preferably, dovetail grooves are provided on both sides of the frame, and guide strips are provided on both sides of the wear-resistant plate. The guide strips slide in the dovetail grooves, and lining plates are attached to both sides of the guide strips. The lining plates abut against the inner wall of the dovetail grooves.

[0011] By adopting the above technical solution, the liner is set in the inclined guide groove of the wear-resistant plate joint, and the gravity of the slag automatically compacts and seals it. When the slag gate is subjected to high-frequency vibration and irregular impact of slag, the inclined structure can effectively resist the lateral vibration or displacement caused by the impact of slag, prevent the wear-resistant plate from loosening, and the inclined contact area is larger, the stress distribution is more uniform, and the local wear between the wear-resistant plate and the frame is reduced.

[0012] By adopting the above technical solution, a connecting plate is fixedly provided at one end of the liner, a screw is provided on the connecting plate, a connecting hole is provided on the wear-resistant plate, and the screw passes through the connecting plate and is threaded into the connecting hole.

[0013] By adopting the above technical solution, the liner can be disassembled and assembled with screws, which allows the liner to be replaced quickly, reducing the time maintenance cost of the wear-resistant plate and improving the service life of the wear-resistant plate.

[0014] Preferably, the guide strip has a fixed limiting groove on one side near the bottom of the frame, and a limiting strip is fixedly provided on the dovetail groove, with the limiting strip sliding in the limiting groove.

[0015] By adopting the above technical solution, when the slag discharge gate is closed, the mixture of slag and muddy water is prevented from flowing into the dovetail groove along the bottom of the wear-resistant plate. The slag discharge gate is subjected to high-frequency vibration, which reduces the friction between the dovetail groove and the side of the wear-resistant plate, and further reduces the side wear of the wear-resistant plate.

[0016] Preferably, the dovetail groove is provided with a plurality of drainage holes, and the other end of the drainage holes extends to the outside of the frame.

[0017] By adopting the above technical solutions, the mixture of slag and muddy water can be discharged quickly from the dovetail trough, reducing the accumulation of slag in the dovetail trough.

[0018] In summary, this application has the following beneficial technical effects: when the slag discharge gate is opened and the wear-resistant plate slides in the frame, the mixture of slag and mud will pass through the cleaning brush first. The cleaning brush will block most of the slag, reducing the amount of slag entering the gap between the wear-resistant plate and the frame, thereby reducing the friction between the wear-resistant plate and the frame, reducing the wear of the wear-resistant plate, and improving the service life of the wear-resistant plate. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this embodiment; Figure 2 This is a schematic diagram of the frame and wear-resistant plate structure in this embodiment; Figure 3 This is a schematic diagram of the cross-sectional structure of the frame and wear-resistant plate in this embodiment; Figure 4 for Figure 3 Enlarged structural diagram of A in the middle Figure 5 This is a schematic diagram of the cross-sectional structure of the cleaning component in this embodiment.

[0021] The attached diagram lists the components represented by each number as follows: 1. Frame; 2. Wear-resistant plate; 3. Mounting port; 4. Opening; 5. Liner plate; 6. Connecting plate; 7. Screw; 8. Guide strip; 9. Drain hole; 10. Limiting groove; 11. Limiting strip; 12. Pressing block; 13. V-shaped frame; 14. Connecting block; 15. Cleaning brush; 16. Dovetail groove; 17. Positioning groove; 18. Positioning strip; 19. Reinforcing rib. Detailed Implementation

[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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0024] A wear-resistant slag discharge gate for a screw conveyor includes a frame 1 and a wear-resistant plate 2. The frame 1 has an opening 4 in the middle for the entry and exit of slag. The opening 4 has installation ports 3 on both sides. A cleaning component is installed in the installation port 3. The cleaning component includes a V-shaped frame 13, a connecting block 14 and a cleaning brush 15. The connecting block 14 is fixedly connected between the bottom of the V-shaped frame 13 and the cleaning brush 15. The other end of the cleaning brush 15 presses against the wear-resistant plate 2. Positioning strips 18 are fixedly installed on both sides of the V-shaped frame 13. Positioning grooves 17 are opened on both sides of the installation port 3. The positioning strips 18 are pressed against the positioning grooves 17.

[0025] During use, the wear-resistant plate 2 begins to slide away from the frame 1. The wear-resistant plate 2 in the opening 4 enters the frame 1 and first passes through the cleaning brush 15. The cleaning brush 15 comes into contact with the surface of the wear-resistant plate 2 and is pressed against it. The positioning strip 18 is pressed against the positioning groove 17. During the movement of the wear-resistant plate 2, the cleaning brush 15 can remove the adhering dirt on the surface of the wear-resistant plate 2, reduce the amount of dirt entering the gap between the wear-resistant plate 2 and the frame 1, reduce the friction between the wear-resistant plate 2 and the frame 1, reduce the wear of the wear-resistant plate 2, and improve the service life of the wear-resistant plate 2.

[0026] A reinforcing rib 19 is fixedly provided at the connection between the V-shaped frame 13 and the positioning strip 18. A pressing block 12 is fixedly provided on the reinforcing rib 19. The other end of the pressing block 12 extends above the mounting port 3. By pressing the two pressing blocks 12, the two pressing blocks 12 are brought closer to each other, which allows the two inclined surfaces of the V-shaped frame 13 to move closer to each other. The positioning strip 18 is disengaged from the positioning groove 17. Then, it is removed from the mounting port 3 by pressing the pressing block 12. This allows for quick disassembly of the cleaning component. After disassembly, the new cleaning component is placed into the mounting port 3. The positioning strip 18 is aligned with the positioning groove 17, and the V-shaped frame 13 is released. This allows the two inclined surfaces of the V-shaped frame 13 to return to their inclined state, and the positioning strip 18 is pressed tightly in the positioning groove 17. The operation is simple and enables quick maintenance of the cleaning component.

[0027] Dovetail grooves 16 are provided on both sides of the frame 1, and guide strips 8 are provided on both sides of the wear-resistant plate 2. The guide strips 8 slide in the dovetail grooves 16. Liners 5 are attached to both sides of the guide strips 8. The linings 5 ​​press against the inner wall of the dovetail grooves 16. When the wear-resistant plate 2 slides in the frame 1, it contacts the frame 1 through the linings 5. The linings 5 ​​are set in the inclined dovetail grooves 16 of the joint of the wear-resistant plate 2. The gravity of the slag automatically compacts and seals the joint. When the slag gate is subjected to high-frequency vibration and irregular impact of slag, the inclined structure can effectively resist the lateral vibration or displacement caused by the impact of slag, prevent the wear-resistant plate 2 from loosening, and the inclined contact area is larger, the stress distribution is more uniform, and the local wear between the wear-resistant plate 2 and the frame 1 is reduced.

[0028] A connecting plate 6 is fixedly installed at one end of the liner 5. A screw 7 is threaded through the connecting plate 6. A connecting hole is opened on the wear-resistant plate 2. The screw 7 passes through the connecting plate 6 and is threaded into the connecting hole. When replacing the liner 5, the liner 5 can be replaced simply by removing the screw 7 on the connecting plate 6. There is no need to remove the wear-resistant plate 2 separately, which reduces the maintenance time of the liner 5.

[0029] A guide bar 8 has a limiting groove 10 fixedly opened on one side near the bottom of the frame 1. A limiting bar 11 is fixedly installed on the dovetail groove 16. The limiting bar 11 slides in the limiting groove 10. Several drainage holes 9 are opened in the dovetail groove 16. The other end of the drainage hole 9 extends to the outside of the frame 1 to help the dovetail groove 16 quickly discharge the mixture of slag and mud, reduce the accumulation of slag in the dovetail groove 16, and prevent the mixture of slag and mud from flowing into the dovetail groove 16 along the bottom of the wear-resistant plate 2 when the slag discharge gate is closed. The high-frequency vibration of the slag discharge gate reduces the friction between the dovetail groove 16 and the side of the wear-resistant plate 2, further reducing the side wear of the wear-resistant plate 2.

[0030] The implementation principle of this embodiment is as follows: When in use, the wear-resistant plate 2 begins to slide away from the frame 1. The wear-resistant plate 2 in the opening 4 enters the frame 1 and first passes through the cleaning brush 15. The cleaning brush 15 comes into contact with the surface of the wear-resistant plate 2 and is pressed. The positioning strip 18 is pressed against the positioning groove 17. During the movement of the wear-resistant plate 2, the cleaning brush 15 can remove the dirt adhering to the surface of the wear-resistant plate 2 and reduce the amount of dirt entering the gap between the wear-resistant plate 2 and the frame 1.

[0031] The guide strip 8 slides in the dovetail groove 16, and the liner 5 presses against the inner wall of the dovetail groove 16. When the wear-resistant plate 2 slides in the frame 1, it contacts the frame 1 through the liner 5. The liner 5 is set in the inclined dovetail groove 16 of the joint of the wear-resistant plate 2, and automatically compacts and seals by the gravity of the slag. When the slag discharge gate is subjected to high-frequency vibration and irregular impact of slag, the inclined structure can effectively resist the lateral vibration or displacement caused by the impact of slag, and prevent the wear-resistant plate 2 from loosening. Protective devices are added to the contact surfaces of the wear-resistant plate 2, which effectively reduces the friction between the wear-resistant plate 2 and the frame 1, making the maintenance of the wear-resistant plate 2 more efficient and convenient, and increasing the service life of the wear-resistant plate 2.

[0032] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are 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.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection 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.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wear-resistant slag discharge gate for a screw conveyor, comprising a frame (1) and a wear-resistant plate (2), wherein the frame (1) has an opening (4) in the middle for receiving and discharging slag, characterized in that: The opening (4) has mounting ports (3) on both sides. A cleaning component is provided in the mounting port (3). The cleaning component includes a V-shaped frame (13), a connecting block (14), and a cleaning brush (15). The connecting block (14) is fixedly connected between the bottom of the V-shaped frame (13) and the cleaning brush (15). The other end of the cleaning brush (15) presses against the wear-resistant plate (2). Positioning strips (18) are fixedly provided on both sides of the V-shaped frame (13). Positioning grooves (17) are provided on both sides of the mounting port (3). The positioning strips (18) are pressed against the positioning grooves (17).

2. The wear-resistant slag discharge gate of a screw conveyor according to claim 1, characterized in that: A reinforcing rib (19) is fixedly provided at the connection between the V-shaped frame (13) and the positioning strip (18). A pressing block (12) is fixedly provided on the reinforcing rib (19), and the other end of the pressing block (12) extends to the top of the mounting port (3).

3. The wear-resistant slag discharge gate of a screw conveyor according to claim 1, characterized in that: The frame (1) has dovetail grooves (16) on both sides, and the wear-resistant plate (2) has guide strips (8) on both sides. The guide strips (8) slide in the dovetail grooves (16), and the guide strips (8) are fitted with lining plates (5) on both sides. The lining plates (5) press against the inner wall of the dovetail grooves (16).

4. The wear-resistant slag discharge gate of a screw conveyor according to claim 3, characterized in that: A connecting plate (6) is fixedly provided at one end of the liner (5). A screw (7) is provided on the connecting plate (6). A connecting hole is provided on the wear-resistant plate (2). The screw (7) passes through the connecting plate (6) and is threaded into the connecting hole.

5. The wear-resistant slag discharge gate of a screw conveyor according to claim 3, characterized in that: The guide bar (8) has a fixed limiting groove (10) on one side near the bottom of the frame (1), and a limiting bar (11) is fixedly provided on the dovetail groove (16), and the limiting bar (11) slides in the limiting groove (10).

6. The wear-resistant slag discharge gate of a screw conveyor according to claim 3, characterized in that: The dovetail groove (16) is provided with a number of drainage holes (9), and the other end of the drainage holes (9) extends to the outside of the frame (1).

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