Intermittent grouting control device

Abstract

The application discloses an intermittent grouting control device, and relates to the technical field of grouting equipment.The device comprises a bidirectional cylinder group, a discharge valve block and a pneumatic module; the bidirectional cylinder group comprises a first cylinder and a second cylinder, and the piston end portions on the two sides of the cylinders are connected with valve rods; the discharge valve block comprises a valve block body and a sealing sleeve, and the valve block is provided with a feeding port and a discharge port; the pneumatic module comprises an air compressor, an air pipe and a pneumatic control module, and the pneumatic control module controls the movement of the cylinders. The discharge valve block comprises four discharge valve blocks, which are matched with the two cylinders respectively, and correspond to the feeding pipes to convey different slurries, and the discharge ports are communicated with a mixing chamber and a discharge pipe. The reciprocating movement of the cylinders is controlled by the pneumatic module, the two discharge pipes of the mixed materials are alternately discharged, and the intermittent grouting purpose is achieved. The device has high grouting precision, stable pressure, high reliability and convenient maintenance, and is suitable for intermittent grouting operations in various engineering fields.

Description

Technical Field

[0001] This application relates to the field of grouting equipment technology, and in particular to an intermittent grouting control device. Background Technology

[0002] In fields such as construction engineering, geological engineering, and mining, grouting technology is a key construction process, mainly used for reinforcing strata, sealing leaks, and filling voids. As engineering projects increasingly demand higher precision, efficiency, and stability in grouting, traditional grouting control devices have gradually revealed numerous shortcomings. Currently, most grouting control devices on the market use a single-valve, single-cylinder structure or electric control to perform grouting operations. Devices using a single-valve, single-cylinder structure require frequent starting and stopping of the power source during intermittent grouting, which not only easily leads to large fluctuations in grouting pressure, affecting grouting quality, but also accelerates equipment wear and shortens its service life. Furthermore, such devices cannot achieve synchronous alternating grouting of multiple component materials. When different materials need to be mixed for grouting, additional mixing equipment is often required, increasing equipment costs and operational complexity. While electrically controlled grouting devices offer improved control precision, they are prone to short circuits and malfunctions in damp and dusty engineering environments, resulting in low reliability. Furthermore, the slow response speed of electrically controlled devices makes it difficult to meet the demands of high-frequency intermittent grouting. When projects have strict requirements for grouting intervals, these devices cannot accurately control the grouting rhythm, leading to poor grouting results. Furthermore, the existing grouting control devices have low precision in the fit between the valve stem and sealing components, which can easily lead to seal failure after long-term use, causing grout leakage. This not only wastes materials but also pollutes the construction environment and increases construction costs. At the same time, most devices have complex structural designs and fixed connections between components, making later maintenance and component replacement difficult and affecting construction progress. Utility Model Content

[0003] This invention addresses the problems of unstable grouting pressure, difficulty in grouting multi-component mixed materials, low reliability, and inconvenient maintenance in existing grouting control devices by providing an intermittent grouting control device.

[0004] The objective of this utility model is mainly achieved through the following solution: An intermittent grouting control device includes a bidirectional cylinder assembly, a discharge valve block, and a pneumatic module. The bidirectional cylinder assembly includes a first cylinder and a second cylinder, both of which are bidirectional cylinders, comprising a cylinder body and cylinder pistons located on both sides of the cylinder body. A valve stem is detachably and fixedly connected to the end of each cylinder piston. The discharge valve block includes a valve block body and a sealing kit. The sealing kit is installed within the valve block body, and the valve stem can slide along the interior of the sealing kit. The sidewalls of the valve block body are respectively provided with an inlet and an outlet communicating with the interior of the sealing kit. The inlet is perpendicular to the sealing kit, and the outlet is located at the end of the sealing kit away from the valve stem. The pneumatic module includes an air compressor, an air pipe, and a pneumatic control module. The outlet of the air compressor is connected to the air pipe, and the other end of the air pipe is connected to the pneumatic control module. The outlet of the pneumatic control module is connected to both the first and second cylinders.

[0005] Preferably, the discharge valve block is provided with four, including a first discharge valve block and a second discharge valve block located on both sides of the first cylinder, and a third discharge valve block and a fourth discharge valve block located on both sides of the second cylinder.

[0006] Preferably, the discharge ports of the first discharge valve block and the third discharge valve block are both connected to the first mixing chamber through pipes, and a first mixture discharge pipe is provided on one side of the first mixing chamber; the discharge ports of the second discharge valve block and the fourth discharge valve block are both connected to the second mixing chamber through pipes, and a second mixture discharge pipe is provided on one side of the second mixing chamber.

[0007] Preferably, the inlets of the first and second discharge valve blocks are both connected to the feed pipe of the first pump via pipes; the inlets of the third and fourth discharge valve blocks are both connected to the feed pipe of the second pump via pipes.

[0008] Preferably, both the first cylinder and the second cylinder are provided with a first air inlet and a second air inlet. The two first air inlets are connected through a first air inlet pipe, and the two second air inlets are connected through a second air inlet pipe. The outlet of the pneumatic control module is connected to the first air inlet pipe and the second air inlet pipe respectively.

[0009] In summary, compared with the prior art, the present invention has the following beneficial technical effects: (1) This utility model adopts a pneumatic control method. The time interval of cylinder movement can be accurately set through the pneumatic control module to realize the alternating and stable discharge of the first and second mixture discharge pipes, avoiding the problem of grouting pressure fluctuation caused by frequent start and stop of the power source in traditional devices, and effectively ensuring the grouting quality. (2) This utility model delivers slurry of different components through the first pump feed pipe and the second pump feed pipe respectively. After passing through the corresponding discharge valve block, the slurry enters the mixing chamber for mixing. No additional mixing equipment is required, which simplifies the equipment structure. At the same time, it realizes the synchronous mixing and grouting of multi-component materials, which greatly improves the grouting efficiency. (3) Compared with electric control devices, the pneumatic control method of this utility model is not affected by complex engineering environments such as humidity and dust, effectively avoiding problems such as short circuits and faults in the electrical system, and significantly improving the reliability and service life of the device in harsh environments. (4) The discharge valve block of this utility model is equipped with a sealing kit, and the valve stem slides along the inside of the sealing kit, which can effectively enhance the sealing performance between the valve stem and the valve block body, prevent slurry leakage, reduce material waste, and avoid slurry leakage from polluting the construction environment. (5) The connection between the components of this utility model device is simple, and the valve stem and cylinder piston are detachably fixed. When the components are damaged, they can be quickly disassembled and replaced, which reduces the difficulty and cost of later maintenance and ensures the construction progress. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the bidirectional cylinder assembly, the discharge valve block, and the pneumatic module in this utility model; Figure 2 This is a schematic diagram of the structure of this utility model; Figure 3 This is a front view of the discharge valve block in this utility model; Figure 4 This is a side view of the discharge valve block in this utility model; Figure 5 This is a front view of the first or second cylinder in this utility model; Figure 6 This is a side view of the first or second cylinder in this utility model.

[0011] Reference numerals: 1-First cylinder; 2-Second cylinder; 3-Cylinder body; 4-Cylinder piston; 5-Valve stem; 6-Valve block body; 7-Sealing kit; 8-Inlet; 9-Outlet; 10-Air compressor; 11-Air pipe; 12-Pneumatic control module; 13-First outlet valve block; 14-Second outlet valve block; 15-Third outlet valve block; 16-Fourth outlet valve block; 17-First mixing chamber; 18-First mixed material outlet pipe; 19-Second mixing chamber; 20-Second mixed material outlet pipe; 21-First pump inlet pipe; 22-Second pump inlet pipe; 23-First air inlet; 24-Second air inlet; 25-First air inlet pipe; 26-Second air inlet pipe. Detailed Implementation

[0012] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. It should be understood that the implementation of this utility model is not limited to the following embodiments, and any modifications and / or alterations made to this utility model will fall within the protection scope of this utility model.

[0013] Example 1: like Figure 1 , 2 As shown, this utility model discloses a technical solution, an intermittent grouting control device, including a two-way cylinder group, a discharge valve block and a pneumatic module; Specifically, the bidirectional cylinder group includes a first cylinder 1 and a second cylinder 2, both of which are bidirectional cylinders, such as... Figure 5 , 6 As shown, both the first cylinder 1 and the second cylinder 2 include a cylinder body 3 and cylinder pistons 4 located on both sides of the cylinder body 3. A valve stem 5 is detachably and fixedly connected to the end of each cylinder piston 4. In this embodiment, the valve stem 5 and the cylinder piston 4 are threaded together. Figure 3 , 4 As shown, the discharge valve block includes a valve block body 6 and a sealing kit 7. The sealing kit 7 is horizontally installed in the middle of the valve block body 6, and the valve stem 5 can slide along the inside of the sealing kit 7. The side wall of the valve block body 6 is provided with an inlet 8 and an outlet 9 that communicate with the inside of the sealing kit 7. The inlet 8 is vertically arranged with the sealing kit 7, and the outlet 9 is located at the end of the sealing kit 7 away from the valve stem 5, and the inlet 8 is arranged close to the outlet 9. The pneumatic module includes an air compressor 10, an air pipe 11, and a pneumatic control module 12. The air outlet of the air compressor 10 is connected to the air pipe 11, and the other end of the air pipe 11 is connected to the pneumatic control module 12. The outlet of the pneumatic control module 12 is connected to the first cylinder 1 and the second cylinder 2, respectively.

[0014] Example 2: like Figure 1 , 2 As shown, this utility model discloses another technical solution, an intermittent grouting control device, which differs from embodiment 1 in that it has four discharge valve blocks, including a first discharge valve block 13 and a second discharge valve block 14 located on both sides of the first cylinder 1, and a third discharge valve block 15 and a fourth discharge valve block 16 located on both sides of the second cylinder 2.

[0015] Specifically, the discharge ports 9 of the first discharge valve block 13 and the third discharge valve block 15 are both connected to the first mixing chamber 17 through pipes, and the first mixture discharge pipe 18 is connected to one side of the first mixing chamber 17; the discharge ports 9 of the second discharge valve block 14 and the fourth discharge valve block 16 are both connected to the second mixing chamber 19 through pipes, and the second mixture discharge pipe 20 is connected to one side of the second mixing chamber 19.

[0016] Specifically, the inlets 8 of the first discharge valve block 13 and the second discharge valve block 14 are both connected to the first pump feed pipe 21 through pipes; the inlets 8 of the third discharge valve block 15 and the fourth discharge valve block 16 are both connected to the second pump feed pipe 22 through pipes. Pump bodies are installed on both the first pump feed pipe 21 and the second pump feed pipe 22, and the pump bodies are used to pump slurry.

[0017] Example 3: like Figure 1 , 2 As shown in Figure 5, this utility model discloses another technical solution, an intermittent grouting control device, which differs from Embodiment 1 in that the first cylinder 1 and the second cylinder 2 are both provided with a first air inlet 23 and a second air inlet 24. The two first air inlets 23 are connected through a first air inlet pipe 25, and the two second air inlets 24 are connected through a second air inlet pipe 26. The outlet of the pneumatic control module 12 is connected to the first air inlet pipe 25 and the second air inlet pipe 26 respectively.

[0018] The working principle of this application is as follows: Before the cylinder works, the working program is preset by the pneumatic control module 12, which sets the time interval for the cylinder to move left and right, so that the cylinder can perform left and right reciprocating motion according to the preset time interval. When the pneumatic control module 12 controls the cylinder to drive the valve rod 5 to move to the left, the valve rod 5 in the first discharge valve block 13 and the third discharge valve block 15 will close the corresponding feed port 8. At this time, the discharge port 9 of the first discharge valve block 13 and the third discharge valve block 15 will stop discharging. At the same time, the valve rod 5 in the second discharge valve block 14 and the fourth discharge valve block 16 moves to the left with the cylinder, and the corresponding feed port 8 opens. The slurry enters the sealing kit 7 from the feed port 8 and flows out from the discharge port 9. The slurry flows out and enters the second mixing chamber 19 through the pipe. After mixing in the second mixing chamber 19, it flows out from the second mixture discharge pipe 20, realizing the grouting operation of this stage. When the pneumatic control module 12 controls the cylinder to drive the valve rod 5 to move to the right, the valve rod 5 in the second discharge valve block 14 and the fourth discharge valve block 16 closes the corresponding feed port 8, and the discharge port 9 stops discharging; while the valve rod 5 in the first discharge valve block 13 and the third discharge valve block 15 moves to the right with the cylinder, the corresponding feed port 8 opens, the slurry enters from the feed port 8 and flows out from the discharge port 9, and then enters the first mixing chamber 17 through the pipeline. After mixing, it flows out from the first mixture discharge pipe 18, completing the grouting operation of this stage. Through the program control of the pneumatic module, the first mixture discharge pipe 18 and the second mixture discharge pipe 20 can alternately discharge materials, thereby achieving the purpose of intermittent grouting.

[0019] In actual use, the first cylinder 1 and the second cylinder 2 are first fixed to the construction platform with bolts or anchor rods to ensure that the two cylinders are set in parallel. Then, the valve stem 5 is threaded to the end of the cylinder piston 4, and the sealing kit 7 is installed into the valve block body 6. Then, the valve stem 5 is inserted into the sealing kit 7 to complete the connection between the four discharge valve blocks (first discharge valve block 13, second discharge valve block 14, third discharge valve block 15, and fourth discharge valve block 16) and the cylinder. The cylinder and the discharge valve block are fixedly connected by bolts. Next, the inlets 8 of the first discharge valve block 13 and the second discharge valve block 14 are connected to the first pump feed pipe 21 through pipes, and the first pump feed pipe 21 is connected to the cement slurry storage tank; the inlets 8 of the third discharge valve block 15 and the fourth discharge valve block 16 are connected to the second pump feed pipe 22 through pipes, and the second pump feed pipe 22 is connected to the water glass storage tank. At the same time, the outlets 9 of the first discharge valve block 13 and the third discharge valve block 15 are connected to the first mixing chamber 17 through pipes, and the first mixture discharge pipe 18 on one side of the first mixing chamber 17 is connected to the grouting pipe; the outlets 9 of the second discharge valve block 14 and the fourth discharge valve block 16 are connected to the second mixing chamber 19 through pipes, and the second mixture discharge pipe 20 on one side of the second mixing chamber 19 is also connected to the grouting pipe (the two grouting pipes converge and lead to the grouting hole). Finally, the air outlet of the air compressor 10 is connected to the pneumatic control module 12 through the air pipe 11. The outlet of the pneumatic control module 12 is connected to the first air inlet pipe 11 and the second air inlet pipe 11 respectively. The first air inlet pipe 11 is connected to the first air inlet port 23 of the first cylinder 1 and the second cylinder 2, and the second air inlet pipe 11 is connected to the second air inlet port 24 of the two cylinders. Start the air compressor 10 and adjust the output air pressure to 0.8-1.2 MPa. Set the time interval between left and right movements of the cylinder to 30 seconds via the pneumatic control module 12. That is, after the cylinder moves to the left for 30 seconds, it automatically switches to moving to the right for 30 seconds, and so on. At the same time, adjust the slurry delivery rate of the first pump feed pipe 21 and the second pump feed pipe 22 to ensure that the single injection volume reaches 5L.

[0020] The grouting process is as follows: the pneumatic control module 12 controls the compressed air to enter the second air inlet pipe 11, and enters the first cylinder 1 and the second cylinder 2 through the second air inlet hole 24, pushing the cylinder piston 4 to drive the valve rod 5 to move to the left. At this time, the valve stems 5 of the first discharge valve block 13 and the third discharge valve block 15 close the corresponding feed ports 8, stopping the feeding; the feed ports 8 of the second discharge valve block 14 and the fourth discharge valve block 16 open, and the cement slurry enters the second discharge valve block 14 from the first pump feed pipe 21, and the water glass enters the fourth discharge valve block 16 from the second pump feed pipe 22. The two slurries flow out from their corresponding discharge ports 9 and enter the second mixing chamber 19 to mix. The mixed slurry is injected into the soil layer from the second mixture discharge pipe 20 through the grouting pipe. This stage lasts for 30 seconds. After 30 seconds, the pneumatic control module 12 automatically switches the compressed air delivery channel. The compressed air enters the first air inlet pipe 11 and enters the cylinder through the first air inlet hole 23, pushing the cylinder piston 4 to drive the valve stem 5 to move to the right. At this time, the valve stems 5 of the second discharge valve block 14 and the fourth discharge valve block 16 close the inlet 8 and stop feeding; the inlet 8 of the first discharge valve block 13 and the third discharge valve block 15 opens, and the cement slurry and water glass enter the corresponding discharge valve blocks respectively, and flow into the first mixing chamber 17 through the discharge port 9 for mixing. The mixed slurry is injected into the soil layer from the first mixture discharge pipe 18. This stage also lasts for 30 seconds. Through the automatic control of the pneumatic control module 12, the cylinder moves back and forth continuously, and the first mixture discharge pipe 18 and the second mixture discharge pipe 20 alternately discharge materials to achieve intermittent grouting every 30 seconds until the grouting operation of the grouting hole is completed.

[0021] In this application, the cylinder is selected from the SMC CDQ2B series thin double-acting cylinder or the Festo ADVU series compact double-acting cylinder; the sealing kit 7 is made of fluororubber, with the same inner diameter as the valve stem 5 and a tight seal; the pneumatic control module 12 is selected from the Festo CPX series integrated pneumatic control module, model CPX-FB32-10.

[0022] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An intermittent grouting control device, characterized in that: The system includes a bidirectional cylinder assembly, a discharge valve block, and a pneumatic module. The bidirectional cylinder assembly includes a first cylinder (1) and a second cylinder (2). Both the first cylinder (1) and the second cylinder (2) are bidirectional cylinders, including a cylinder body (3) and cylinder pistons (4) located on both sides of the cylinder body (3). Each cylinder piston (4) has a valve stem (5) detachably and fixedly connected to its end. The discharge valve block includes a valve block body (6) and a sealing kit (7). The sealing kit (7) is installed inside the valve block body (6), and the valve stem (5) can slide along the inside of the sealing kit (7). The sidewalls are respectively provided with an inlet (8) and an outlet (9) communicating with the interior of the sealing kit (7). The inlet (8) is perpendicular to the sealing kit (7), and the outlet (9) is located at the end of the sealing kit (7) away from the valve stem (5). The pneumatic module includes an air compressor (10), an air pipe (11) and a pneumatic control module (12). The outlet of the air compressor (10) is connected to the air pipe (11), and the other end of the air pipe (11) is connected to the pneumatic control module (12). The outlet of the pneumatic control module (12) is connected to the first cylinder (1) and the second cylinder (2) respectively.

2. The intermittent grouting control device according to claim 1, characterized in that: The discharge valve block is provided in four parts, including the first discharge valve block (13) and the second discharge valve block (14) located on both sides of the first cylinder (1), and the third discharge valve block (15) and the fourth discharge valve block (16) located on both sides of the second cylinder (2).

3. The intermittent grouting control device according to claim 2, characterized in that: The discharge ports (9) of the first discharge valve block (13) and the third discharge valve block (15) are connected to the first mixing chamber (17) through pipes. The first mixing chamber (17) has a first mixture discharge pipe (18) on one side. The discharge ports (9) of the second discharge valve block (14) and the fourth discharge valve block (16) are connected to the second mixing chamber (19) through pipes. The second mixing chamber (19) has a second mixture discharge pipe (20) on one side.

4. The intermittent grouting control device according to claim 3, characterized in that: The inlets (8) of the first discharge valve block (13) and the second discharge valve block (14) are connected to the first pump feed pipe (21) through pipes; the inlets (8) of the third discharge valve block (15) and the fourth discharge valve block (16) are connected to the second pump feed pipe (22) through pipes.

5. The intermittent grouting control device according to claim 1, characterized in that: The first cylinder (1) and the second cylinder (2) are each provided with a first air inlet (23) and a second air inlet (24). The two first air inlets (23) are connected through a first air inlet pipe (25), and the two second air inlets (24) are connected through a second air inlet pipe (26). The outlet of the pneumatic control module (12) is connected to the first air inlet pipe (25) and the second air inlet pipe (26) respectively.

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