Secondary pressurizing device for output pipeline of pulp shooting machine
By designing quick-connect couplings and secondary pressurization pipeline devices, the problems of blockage and insufficient pressure in the output pipeline of the shotcrete machine are solved, improving construction quality and efficiency, and making it suitable for complex construction scenarios and long-distance transportation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 淮北矿业股份有限公司祁南煤矿
- Filing Date
- 2025-08-13
- Publication Date
- 2026-05-26
AI Technical Summary
The output pipe of the shotcrete machine is prone to blockage or insufficient pressure when spraying concrete, resulting in low construction efficiency and affecting the progress of the project.
Design a secondary pressurization device that includes a pipe body, quick connectors, flanges, and a secondary pressurization pipe. The quick connectors enable rapid connection through their male and female structures, while a self-locking plate and compression spring ensure stability. The flanges and gaskets guarantee airtightness, and the secondary pressurization pipe provides additional pressure to the shotcrete machine's output pipe.
It improves the quality and efficiency of shotcrete construction, ensures uniform shotcrete coverage, prevents leakage, extends equipment life, reduces construction costs, and is suitable for complex construction scenarios and long-distance transportation.
Smart Images
Figure CN224283868U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of shotcrete machine output technology, specifically a secondary pressurization device for shotcrete machine output pipe. Background Technology
[0002] Shotcrete machines are used at coal mine roadway support construction sites to fill cracks, fill depressions, and reinforce rock strata on the roadway surface. After roadway excavation, many cracks and depressions often appear in the surrounding rock. After spraying concrete mortar, it can fill part of the open cracks, joints, and strata, acting as a bond to make the rock blocks interlock and form a whole, preventing the loosening and displacement of the rock blocks. The sprayed concrete mortar fills the depressions, avoids stress concentration, reinforces the surrounding rock, improves the impermeability and stability of the surrounding rock, and enhances the load-bearing capacity of the surrounding rock.
[0003] Due to weak compressed air pressure and a large output of the shotcrete machine, the output pipe of the shotcrete machine is frequently blocked, or the pressure of spraying concrete is low and the atomization is poor, which affects the progress of the project, wastes manpower and resources, and reduces construction efficiency. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a secondary pressurization device for the output pipe of a shotcrete machine, thereby solving the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a secondary pressurization device for the output pipe of a shotcrete machine, comprising a pipe body, quick connectors movably connected to both the left and right sides of the pipe body, a secondary pressurization pipe fixedly connected to the upper surface of the pipe body, a connecting plate fixedly connected to the upper surface of the secondary pressurization pipe, a flange movably connected to one side of the quick connector, a discharge port opened inside the flange, a fixing bolt rotatably connected inside the flange, and a sealing gasket movably connected to the outer wall of the discharge port.
[0006] Preferably, the quick connector includes a male connector and a female connector. The outer wall of the female connector is slidably connected to a self-locking plate. The interior of the female connector has a groove, and a first compression spring is movably connected inside the groove. The first compression spring is connected to the self-locking plate.
[0007] Preferably, the inner wall of the female head is provided with a ball groove, and a ball is rotatably connected inside the ball groove. A limit groove is provided inside the female head.
[0008] Preferably, the male end has a ball bearing fixing groove inside, and the ball bearing fixing groove is connected to the ball bearing. The male end also has a groove inside, and a return spring is movably connected inside the groove. A fixing block is fixed to one side of the return spring, and the fixing block is connected to the limiting groove.
[0009] Preferably, both the male and female heads are fixedly connected to a mounting base, a valve stem is movably connected inside the mounting base, a second compression spring is movably connected to one side of the valve stem, a mounting plate is fixedly connected to one output end of one side of the second compression spring, a compression plate is fixedly connected to one side of the mounting plate, and flow grooves are formed on the left and right sides inside the mounting base.
[0010] Beneficial effects
[0011] This invention provides a secondary pressurization device for the output pipe of a shotcrete machine. Compared with the prior art, it has the following advantages:
[0012] (1) Through the quick connectors on both sides of the pipe body, the male and female heads are matched, and the self-locking plate, the first compression spring, the ball bearing and other structures are used to achieve a quick and stable connection. The self-locking plate automatically locks the male head under the action of the first compression spring. The operation is simple and the installation efficiency is improved. The flange and quick connector are connected. The sealing gasket at the outlet is tightened with the fixing bolts to ensure good sealing at the connection, prevent the leakage of the grout, and ensure a clean construction environment and effective use of materials. The secondary pressurization pipe is fixed to the pipe body, which can pressurize the grout in the output pipe of the grouting machine. When the initial pressure of the grouting machine is not enough to meet the construction requirements, the secondary pressurization pipe can increase the grout pressure, making the grouting smoother and more powerful, ensuring uniform coverage of the grouting, improving the quality of grouting construction, and is suitable for complex construction scenarios and long-distance transportation.
[0013] (2) The valve control structure is formed by the valve stem, the second compression spring, the mounting plate and the compression plate inside the male and female heads. Under the action of the second compression spring, the valve stem controls the opening and closing of the flow channel through the compression plate. When the pressure in the pipeline is abnormal, the valve will automatically adjust to prevent the pipeline or equipment from being damaged by excessive pressure, ensure the safe and stable operation of the shotcrete operation, and extend the service life of the equipment. The quick-connect design allows the device to be easily connected to the output pipeline of shotcrete machine with different pipe diameters. The quick-connect and the secondary pressurization pipe can be replaced with different specifications according to the actual construction needs, which improves the versatility of the device, reduces construction costs and reduces equipment idle waste. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of a secondary pressurization device for the output pipe of a shotcrete machine according to an embodiment of the present invention;
[0015] Figure 2 This is a schematic diagram of the overall structure of the quick connector according to an embodiment of the present invention;
[0016] Figure 3 This is a flowchart illustrating the process of an embodiment of the present invention.
[0017] In the diagram: 1. Pipe body; 2. Quick connector; 3. Secondary pressurization pipe; 4. Connecting plate; 5. Flange; 6. Discharge port; 7. Fixing bolt; 8. Sealing gasket; 9. Male connector; 10. Female connector; 11. Self-locking plate; 12. Slide groove; 13. First compression spring; 14. Ball groove; 15. Ball; 16. Ball fixing groove; 17. Groove; 18. Return spring; 19. Fixing block; 20. Limiting groove; 21. Mounting seat; 22. Valve stem; 23. Second compression spring; 24. Mounting plate; 25. Compression plate; 26. Flow groove. Detailed Implementation
[0018] 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.
[0019] Example 1:
[0020] Please see Figure 1-3As shown, this embodiment proposes a secondary pressurization device for the output pipe of a shotcrete machine, including a pipe body 1. Quick connectors 2 are movably connected to both the left and right sides of the pipe body 1. A secondary pressurization pipe 3 is fixedly connected to the upper surface of the pipe body 1, and a connecting plate 4 is fixedly connected to the upper surface of the secondary pressurization pipe 3. A flange 5 is movably connected to one side of the quick connector 2. A discharge port 6 is opened inside the flange 5, and a fixing bolt 7 is rotatably connected inside the flange 5. A sealing gasket 8 is movably connected to the outer wall of the discharge port 6. The quick connectors 2 movably connected to the left and right sides of the pipe body 1 greatly improve the convenience of installation and disassembly of the entire device. In actual shotcrete operation scenarios, if it is necessary to repair, replace, or adjust the pipe routing according to the construction layout, the quick connectors 2 allow workers to quickly disassemble and reassemble the pipe, significantly saving construction time and improving work efficiency. Furthermore, the secondary pressurization pipe 3 fixedly connected to the upper surface of the pipe body 1 is used to realize the shotcrete... The secondary pressurization function of the shotcrete machine output pipe is a core component. When the initial output pressure of the shotcrete machine cannot meet specific construction needs, such as long-distance transportation or the need for strong spraying, the secondary pressurization pipe 3 can apply additional pressure to the shotcrete material in the pipe, ensuring that the shotcrete material reaches the target position smoothly and maintains a good spraying effect, thus improving the quality of shotcrete construction. Secondly, the connecting plate 4 fixed to the upper surface of the secondary pressurization pipe 3 provides convenience for the connection between the secondary pressurization pipe and external equipment or support structure. The flange 5, which is movable on one side of the quick connector 2, further enhances the stability and sealing of the connection. During shotcrete operation, the pressure of the shotcrete material is relatively large. The flange 5 is tightly connected to the corresponding flange 5 of other pipes or equipment through the fixing bolts 7, ensuring that the connection can withstand large pressure without loosening. In addition, the outlet 6 opened inside the flange 5 is the channel for the shotcrete material to flow out, and the sealing gasket 8, which is movable on the outer wall of the outlet 6, plays a key sealing role.
[0021] Preferably, the quick connector 2 includes a male connector 9 and a female connector 10. A self-locking plate 11 is slidably connected to the outer wall of the female connector 10. A groove 12 is formed inside the female connector 10, and a first compression spring 13 is movably connected inside the groove 12. The first compression spring 13 is connected to the self-locking plate 11. The self-locking plate 11 on the outer wall of the female connector 10 is connected to the first compression spring 13 in the inner groove 12. When the male connector 9 is inserted into the female connector 10, the male connector 9 will compress the self-locking plate 11, causing it to overcome the elastic force of the first compression spring 13 and slide into the groove 12. After insertion, the self-locking plate 11 resets under the elastic force of the first compression spring 13 and locks in the corresponding position of the male connector 9, realizing quick connection and self-locking function, preventing the male connector 9 from accidentally coming out, and making the connection of the quick connector 2 more convenient and reliable. Through the cooperation of the self-locking plate 11 and the first compression spring 13, the connection between the male connector 9 and the female connector 10 can be completed quickly, and a certain locking force is provided after connection to ensure that the quick connector 2 will not be easily separated due to external forces or other factors during pipeline transportation, thereby improving the stability and sealing of the pipeline connection.
[0022] Preferably, the inner wall of the female connector 10 is provided with a ball groove 14, and a ball 15 is tactilely connected inside the ball groove 14. The female connector 10 also has a limiting groove 20 inside. The ball 15 can roll flexibly within the ball groove 14. When the male connector 9 is inserted into the female connector 10, the ball 15 can guide and position the male connector 9, assisting it in accurately inserting into the appropriate position. Furthermore, during insertion, rolling reduces friction and protects the connection surface. Secondly, the female connector... The head 10 has a limiting groove 20 inside, which cooperates with the internal structure of the male head 9. Specifically, the male head 9 has a groove 17 inside, and a return spring 18 is movably connected inside the groove 17. A fixing block 19 is fixed to one side of the return spring 18. When the male head 9 is inserted into the female head 10, the fixing block 19 will be locked into the limiting groove 20 under the action of the return spring 18, thereby restricting the relative movement between the male head 9 and the female head 10, further enhancing the stability of the quick connector 2 connection and preventing it from loosening or falling off during operation.
[0023] Preferably, the male connector 9 has a ball retaining groove 16 inside, and the ball retaining groove 16 is connected to the ball 15. The male connector 9 also has a groove 17 inside, and a return spring 18 is movably connected inside the groove 17. A fixing block 19 is fixed to one side of the return spring 18, and the fixing block 19 is connected to the limiting groove 20. The ball retaining groove 16 inside the male connector 9 is connected to the ball 15 in the ball groove 14 on the inner wall of the female connector 10. When the male connector 9 is inserted into the female connector 10, the ball 15 rolls in the ball groove 14 and gradually embeds into the ball retaining groove 16. This engagement plays a role in positioning and initial fixation, so that the male connector 9 and the female connector 10 can be accurately aligned when connected, and to a certain extent, the radial movement of the male connector 9 relative to the female connector 10 is restricted, which enhances the tightness of the connection. Furthermore, the groove 17 inside the male connector 9 provides installation space for the return spring 18 and the fixing block 19. The return spring 18 has elasticity. When the male connector 9 is inserted into the female connector 10, the fixing block 19 is squeezed by the inner wall of the female connector 10, which compresses the return spring 18 and moves it into the groove 17. When the male connector 9 is fully inserted and the fixing block 19 is aligned with the limiting groove 20 inside the female connector 10, the return spring 18 pushes the fixing block 19 into the limiting groove 20. This structure further restricts the axial movement of the male connector 9 relative to the female connector 10, making the connection of the quick connector 2 more stable and able to withstand the pressure inside the pipeline without easily separating. Secondly, the components such as the ball fixing groove 16, ball 15, groove 17, return spring 18, fixing block 19 and limiting groove 20 cooperate with each other to constrain and fix the connection between the male connector 9 and the female connector 10 in both radial and axial directions. Their combined action realizes the quick and reliable connection of the quick connector 2, ensuring the sealing and stability of the shotcrete machine output pipeline during operation and reducing the risk of leakage and failure caused by loose connection.
[0024] Preferably, both the male connector 9 and the female connector 10 have mounting seats 21 fixedly connected inside. A valve stem 22 is movably connected inside the mounting seat 21. A second compression spring 23 is movably connected to one side of the valve stem 22. A mounting plate 24 is fixedly connected to the output end of one side of the second compression spring 23. A compression plate 25 is fixedly connected to one side of the mounting plate 24. Flow grooves 26 are formed on the left and right sides inside the mounting seat 21. The mounting seats 21, fixedly connected inside both the male connector 9 and the female connector 10, provide a foundation for the installation and positioning of components such as the valve stem 22, ensuring the proper functioning of the valve stem 22, etc. The stable position of the components inside the quick connector 2 allows each part to work in an orderly and coordinated manner. The valve stem 22 is movably connected inside the mounting base 21, and the second compression spring 23 connected to one side of it provides elastic force. When there is no pressure or low pressure in the pipeline, the second compression spring 23 is in its natural or slightly compressed state, pushing the valve stem 22 to a certain position. At this time, the valve is closed or partially closed, restricting the flow of fluid. When the pressure in the pipeline increases, the pressure acts on the valve stem 22, overcoming the elastic force of the second compression spring 23, causing the valve stem 22 to move, thereby opening or increasing the valve opening to allow fluid to pass. Furthermore, the mounting plate 24 fixed to the output end of the second compression spring 23 connects the second compression spring 23 and the compression plate 25. The compression plate 25 is fixed to the mounting plate 24 and is in direct contact with the fluid. Under the action of the valve stem 22, it can block or open the flow channel 26. When the valve stem 22 moves, it drives the compression plate 25 to move through the mounting plate 24, thereby controlling whether fluid can pass through. The flow channel 26 enables the control of the flow and flow rate of the fluid in the pipeline. The flow channels 26 on the left and right sides inside the mounting base 21 are channels for the fluid to flow inside the quick connector 2. When the squeezing plate 25 opens the flow channel 26, the fluid can pass through the quick connector 2 smoothly. When the squeezing plate 25 blocks the flow channel 26, the flow of the fluid is stopped. Through the coordinated action of the valve rod 22, the second squeezing spring 23, the mounting plate 24 and the squeezing plate 25, the opening and closing degree of the flow channel 26 can be flexibly controlled, thereby realizing the regulation of the fluid flow rate.
[0025] In use, the male connector 9 and female connector 10 are aligned with the ends of the pipes to be connected, with the male connector 9 close to the female connector 10. The male connector 9 is then pushed into the female connector 10. Under the force of the insertion of the male connector 9, the balls 15 in the ball groove 14 on the inner wall of the female connector 10 roll within the ball groove 14 and embed into the ball fixing groove 16 of the male connector 9, achieving initial positioning and radial fixation of the male connector 9 and the female connector 10. Furthermore, when the male connector 9 is inserted, the fixing block 19 in its internal groove 17 is squeezed by the inner wall of the female connector 10, causing the compression return spring 18 to move into the groove 17. When the male connector 9 is fully inserted, the fixing block 19 aligns with the limiting groove 20 inside the female connector 10, and the return spring 18 pushes the fixing block 19 to lock. The male connector 9 and female connector 10 are connected in the limiting groove 20 to complete axial fixation. The self-locking plate 11 on the outer wall of the female connector 10 can slide within the slide groove 12 under the action of the first compression spring 13. After the male connector 9 and female connector 10 are connected, the self-locking plate 11 provides some protection and auxiliary fixation. The quick connector 2 is connected to the pipe body 1 via the flange 5. The fixing bolt 7 is rotated to tighten the flange 5 connection. The sealing gasket 8 at the outlet 6 ensures the sealing of the connection. The secondary pressurization pipe 3 is fixed to the upper surface of the pipe body 1. The connecting plate 4 is used to fix or connect other related components, providing support and a connection base for secondary pressurization. The shotcrete machine is then started, and the material is transported through the pipe body 1. When the material reaches the quick connector 2... When the material is under pressure, the valve stem 22 inside the male head 9 and female head 10 overcomes the elastic force of the second compression spring 23, driving the mounting plate 24 and the extrusion plate 25 to move. The extrusion plate 25 leaves the flow groove 26 inside the mounting base 21, the flow groove 26 opens, and the material can flow through the flow groove 26 inside the male head 9 and female head 10, realizing the transfer of material between different pipes. When it is necessary to pressurize the material in the output pipe of the shotcrete machine, additional pressure is input into the pipe body 1 through the secondary pressurization pipe 3, so that the pressure of the material in the pipe increases, thereby realizing the secondary pressurization function to meet the material transmission pressure requirements of the shotcrete machine in different working scenarios. First, the spring force of the return spring 18 is overcome by external force, and the fixing block 19 inside the male head 9 is moved out of the limiting groove 20 of the female head 10, releasing the axial fixation between the male head 9 and the female head 10. Then, the male head 9 is pulled out of the female head 10. During the pulling process, the ball 15 rolls out from the ball fixing groove 16 of the male head 9 and returns to the ball groove 14 of the female head 10. At the same time, the valve stem 22 returns to the initial position under the action of the second compression spring 23, and the compression plate 25 re-seals the flow groove 26 to prevent material leakage. Finally, as needed, the flange 5 can be removed by rotating the fixing bolt 7 to separate the quick connector 2 from the pipe body 1 for maintenance or replacement of parts.
[0026] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A secondary pressurization device for the output pipe of a shotcrete machine, comprising a pipe body (1), quick connectors (2) movably connected to both the left and right sides of the pipe body (1), and a secondary pressurization pipe (3) fixedly connected to the upper surface of the pipe body (1), characterized in that: A connecting plate (4) is fixed to the upper surface of the secondary pressurization pipe (3), a flange (5) is movably connected to one side of the quick connector (2), a discharge port (6) is opened inside the flange (5), a fixing bolt (7) is rotatably connected inside the flange (5), and a sealing gasket (8) is movably connected to the outer wall of the discharge port (6).
2. The secondary pressurization device for the output pipe of a shotcrete machine according to claim 1, characterized in that: The quick connector (2) includes a male connector (9) and a female connector (10). The outer wall of the female connector (10) is slidably connected to a self-locking plate (11). The interior of the female connector (10) is provided with a sliding groove (12). The interior of the sliding groove (12) is movably connected to a first compression spring (13), and the first compression spring (13) is connected to the self-locking plate (11).
3. A secondary pressurization device for the output pipe of a shotcrete machine according to claim 2, characterized in that: The inner wall of the female head (10) is provided with a ball groove (14), and a ball (15) is rolled inside the ball groove (14). A limit groove (20) is provided inside the female head (10).
4. A secondary pressurization device for the output pipe of a shotcrete machine according to claim 2, characterized in that: The male head (9) has a ball fixing groove (16) inside, and the ball fixing groove (16) is connected to the ball (15). The male head (9) has a groove (17) inside, and a return spring (18) is movably connected inside the groove (17). A fixing block (19) is fixed to one side of the return spring (18), and the fixing block (19) is connected to the limiting groove (20).
5. A secondary pressurization device for the output pipe of a shotcrete machine according to claim 2, characterized in that: Both the male head (9) and the female head (10) are fixedly connected to a mounting base (21). A valve stem (22) is movably connected inside the mounting base (21). A second compression spring (23) is movably connected to one side of the valve stem (22). A mounting plate (24) is fixedly connected to the output end of one side of the second compression spring (23). A compression plate (25) is fixedly connected to one side of the mounting plate (24). Flow grooves (26) are opened on the left and right sides inside the mounting base (21).