WO2021022825A1

WO2021022825A1 - Novel slurry mixing grouting system

Info

Publication number: WO2021022825A1
Application number: PCT/CN2020/085038
Authority: WO
Inventors: 施伟斌; 张道忠; 王惠文
Original assignee: 英达热再生有限公司
Priority date: 2019-08-08
Filing date: 2020-04-16
Publication date: 2021-02-11
Also published as: CN110339735A

Abstract

A novel slurry mixing grouting system, comprising a mixer (14) and a plurality of grouting cylinders (2, 6, 9). Discharging ports (D5, E5, F5) of the grouting cylinders (2, 6, 9) are provided with check valves (3, 5, 11) in a discharging direction and are respectively connected to feeding ports (D8, E8, F8) of the mixer, and feeding ports (D4, E4, F4) of the grouting cylinders (2, 6, 9) are provided with check valves (4, 10, 12) in a feeding direction. Cylinder diameters of the grouting cylinders (2, 6, 9) are set according to a corresponding ratio of materials to be mixed, so that a volume ratio of the materials to be mixed is consistent with a cross-sectional area ratio of the corresponding grouting cylinders (2, 6, 9). The same number of double-extension cylinders (1, 7, 8) as the grouting cylinders (2, 6, 9) and a three-position four-way reversing valve (13) are provided. Piston rods of the double-extension cylinders (1, 7, 8) are rigidly connected with piston rods of the grouting cylinders (2, 6, 9) in a one-to-one correspondence mode, and oil passages of the double-extension cylinders (1, 7, 8) are sequentially connected in series and then connected to an oil port A and an oil port B of the three-position four-way reversing valve (13) to form a closed oil passage. In a grouting process, by selecting different diameters of the grouting cylinders, slurry is mixed in a fixed ratio in the grouting process.

Description

A new type of slurry mixing grouting system

Technical field

The invention relates to a device for grouting construction, in particular to a novel slurry mixing grouting system, which is applied to the field of construction engineering machinery grouting.

Background technique

The traditional solution for grouting grading is to mix different materials into one cylinder and then directly inject them with grouting equipment. However, as long as most of the materials are mixed together, a chemical reaction will occur, which requires a short time to be used up. , Otherwise the material will solidify or fail to achieve the effect of use, and the underground situation is difficult to predict in advance, it is difficult to grasp the amount of material used, resulting in a lot of waste, and most of the materials will pollute the environment to a certain extent. It is very difficult. This system avoids all kinds of problems caused by mixing in advance by mixing during the grouting process, thus achieving the best solution.

Summary of the invention

The technical problem to be solved by the present invention is to overcome the technical defects existing in the prior art and provide a new type of slurry mixing grouting system. During the grouting process, through the selection of different diameters of the grouting cylinder, the slurry can be used in the grouting process. Mixing according to a fixed ratio avoids the various defects of the slurry mixing in advance and achieves the best material utilization rate.

The novel slurry mixing grouting system of the present invention includes a mixer and two or more grouting cylinders. The grouting cylinder is a piston-type grouting cylinder. The mixer is provided with a discharge port and the mixer enters The number of feed openings is not less than the number of grouting cylinders. It is characterized in that: the discharge port of each grouting cylinder is provided with a discharge direction check valve and is respectively connected to the mixer feed port, and the feed port of each grouting cylinder is provided with a feed direction check valve. The cylinder diameter of each grouting cylinder is set according to its corresponding proportion of materials to be mixed, so that the volume ratio of the materials to be mixed is consistent with the cross-sectional area ratio of the corresponding grouting cylinder.

In order to synchronize the actions of the grouting cylinders, the new slurry mixing grouting system of the present invention is provided with the same number of double-extending oil cylinders as the grouting cylinders and a three-position four-way reversing valve. The piston rod of each double-extending oil cylinder is rigidly connected with the piston rod of the grouting cylinder in a one-to-one correspondence. The oil circuits of each double extension cylinder are connected in series and then connected to the A and B ports of the three-position four-way reversing valve to form closed oil road. The P port of the three-position four-way reversing valve is connected to the oil pump, and the T port is connected to the oil tank.

The specific control method is as follows:

Inhalation of grout from grouting tank:

The three-position four-way reversing valve is energized, the spool moves to the left, the reversing valve P port (oil inlet) and B port are connected, A port and T port (return port) are connected, and the P port hydraulic oil passes through From port B to the oil inlet of the first double-extending cylinder, the oil outlet of the double-extending cylinder realizes the movement of the piston of the first double-extending cylinder to the left, because the piston rod and grouting cylinder of the double-extending cylinder The three piston rods are rigidly connected, so the piston of the first grouting cylinder moves to the left. The right side cavity of the piston sucks the material into the cavity through the one-way valve. At the same time, the one-way valve at the outlet of the grouting cylinder is sucked in reversely. Closed, the material slurry is sucked into the grouting cylinder. In the same way, the other grouting cylinders simultaneously suck in corresponding materials. Due to the setting of the cylinder diameter ratio of the grouting cylinder, the amount of material sucked by each grouting cylinder conforms to the designed mixing volume ratio.

Grouting out of the grouting tank:

The three-position four-way reversing valve is energized, the spool moves to the right, the three-position four-way reversing valve P port is connected to A port, B port is connected to T port, P port hydraulic oil passes through A port to double extension The first double-extending oil cylinder oil inlet at the other end of the oil outlet cylinder series body, the oil outlet of the oil cylinder realizes the rightward movement of the piston of the dual extension oil cylinder, thereby pushing the corresponding piston of the grouting cylinder to move to the right , The material in the cavity on the right side of the piston is injected into the mixer through the one-way valve, and the one-way valve of the feed port of the grouting cylinder is closed due to the injection action, so that the corresponding material slurry is injected into the mixer. The other grouting cylinders simultaneously push the corresponding materials, so that the material slurry is injected into the mixer. The materials are mixed in the mixer and injected into the place where it needs to be injected through the discharge port. The area ratio of the different diameters of each grouting cylinder realizes the fixed ratio of materials according to the fixed ratio of the cylinder diameter.

The novel slurry mixing grouting system of the present invention realizes the mixing of the slurry in a fixed ratio during the grouting process through the selection of different diameters of the grouting cylinder during the grouting process, avoids various defects of the slurry mixing in advance, and achieves the best The effect of material utilization.

Description of the drawings

Figure 1 is a diagram of the oil circuit connection and working principle of the new slurry mixing grouting system of the present invention.

detailed description

The present invention will be further described in detail below in conjunction with the drawings and specific implementation examples.

Embodiment: As shown in Figure 1, this embodiment has three grouting cylinders, namely, grouting cylinder 1, 2, grouting cylinder 6, and grouting cylinder 3. According to the different configurations of material 1, material 2, and material 3. The size of the three cylinder diameters is designed to make the material volume ratio consistent with the area ratio of the three grouting cylinders. The grouting cylinders are piston grouting cylinders. The mixer 14 is provided with a discharge port H, and the mixer is provided with three feed ports (D8, E8, F8).

The discharge ports (D5, E5, F5) of the three grouting cylinders (2, 6, 9) are respectively connected to the inlets (D6, E6, F6) of the check valves (3, 5, 11), and the check valves (3 ,5,11) outlets (D7, E7, F7) are respectively connected to the feed inlet of the mixer 14 ((D8, E8, F8)). The feed ports (D4, E4, F4) of the three grouting cylinders (2, 6, 9) are respectively connected to the outlets (D3, E3, F3) of the check valves (4, 10, 12), and the check valves (4 ,10,12) the inlets (D2, E2, F2) are respectively connected to the input ports (D1, E1, F1) of the three materials.

In order to make the grouting cylinders act synchronously, the present invention has three double-extending oil cylinders (double-extending oil cylinder-1, double-extending oil cylinder 2-7, and double-extending oil cylinder 3-8) connected in series in sequence and one triple Position four-way reversing valve 13. The piston rods of the three double-extending oil cylinders (1, 7, 8) are rigidly connected with the piston rods of the three grouting cylinders (2, 6, 9) in a one-to-one correspondence. The oil circuits of the double-extending cylinders are connected in series and then connected to the A and B ports of the three-position four-way reversing valve to form a closed oil circuit. The P port of the three-position four-way reversing valve is connected to the oil pump, and the T port is connected to the oil tank. In this embodiment, the reversing valve is electronically controlled, but other control methods, such as manual and hydraulic control, can also be used.

The three grouting cylinders used in this embodiment realize the synchronous working mode of three identical double-extending oil cylinders (1, 7, 8) in series to realize synchronization, but it is not limited to this mode.

The working process of the slurry mixing grouting system of this embodiment is as follows.

Inhalation of grout from grouting tank:

The reversing valve 13 is energized, the spool moves to the left, the reversing valve P port is connected to the B port, the A port is connected to the T port, the P port hydraulic oil is to the B port, and then to the C1 of the double extension cylinder 38 The oil enters from the port, CI port, and the oil exits from port C2 to realize the leftward movement of the piston of the dual-extending cylinder 3-8. Because the piston rod of the dual-extending cylinder 3-8 is rigidly connected with the piston rod of the grouting cylinder 3-9, grouting The piston of the cylinder 9 moves to the left. Because the piston of the grouting cylinder 9 moves to the left, the right cavity of the piston sucks the material 3 into the cavity through the check valve 12, and the check valve 11 is closed due to the reverse suction action. Material three slurry is sucked into the grouting cylinder.

In the same way, C2 hydraulic oil enters the C3 port of the double extension cylinder two 7, the C3 port enters the oil, and the C4 port discharges the oil, so that the double extension cylinder two 7 piston moves to the left, because the double extension cylinder two 7 piston rod and The piston rod of grouting cylinder 2 6 is rigidly connected, so the piston of grouting cylinder 2 6 moves to the left. Because the piston of grouting cylinder 2 6 moves to the left, the right cavity of the piston sucks the material 2 into the cavity through the check valve 10 In the body, at the same time, the one-way valve 5 is closed due to the reverse suction action, so that the material two slurry is sucked into the grouting cylinder.

C4 hydraulic oil enters the C5 port of the double extension cylinder-1, the C5 port enters the oil, and the C6 port outputs the oil, realizing the leftward movement of the piston of the double extension cylinder-1, because the piston rod of the double extension cylinder-1 and grouting The piston rod of cylinder 1-2 is rigidly connected, so the piston of grouting cylinder 1-2 moves to the left. Because the piston of grouting cylinder 1-2 moves to the left, the right side cavity of the piston sucks the material 1 into the cavity through the one-way valve 4. At the same time, the one-way valve 3 is closed due to the reverse suction action, so that the material-slurry is sucked into the grouting cylinder. Since the three three-outlet cylinders are the same, the movement stroke of the piston rod is the same. The volume ratio of the three materials is the area ratio of the three grouting cylinders with different diameters.

Grouting out of the grouting tank:

The reversing valve gets 13 electricity, the spool moves to the right, the reversing valve P port is connected with A port, B port is connected with T port, P port hydraulic oil is connected to A port, and then to C6 of the double extension cylinder 1. C6 port for oil, C5 port for oil, realize the double extension cylinder-1 cylinder piston to move to the right, because the double extension cylinder-1 piston rod is rigidly connected with the grouting cylinder-2 piston rod, so grouting The piston of cylinder 1-2 moves to the right, because the piston of grouting cylinder 1-2 moves to the right, the material in the cavity on the right side of the piston is injected into the mixer 14 through the one-way valve 3, and the one-way valve 4 is closed due to the injection action. The material-slurry is injected into the mixer. In the same way, C5 hydraulic oil enters the C4 port of the dual extension cylinder two 7, the C4 port enters the oil, the C3 port outputs oil, the C3 hydraulic oil enters the dual extension cylinder 38 C2 port, the C2 port enters the C1 port and the oil exits. The material 2 and material 3 slurries are injected into the mixer. The three materials are mixed in the mixer marked 14 and injected through the H port to the place where it needs to be injected. Because the three three-outline cylinders are the same, the piston rod movement stroke is the same. The volume ratio of the three materials is the area ratio of the three grouting cylinders with different diameters. Therefore, the fixed ratio of materials is realized according to the fixed ratio of cylinder diameter.

Claims

A new type of slurry mixing grouting system, including a mixer and two or more grouting cylinders, the grouting cylinder is a piston type grouting cylinder, the mixer is provided with a discharge port, the mixer enters The number of material ports is not less than the number of grouting cylinders; the feature is that: the discharge port of each grouting cylinder is equipped with a discharge direction check valve and is connected to the mixer feed port respectively, and each of the injection cylinders The feed port of the slurry cylinder is equipped with a feed direction one-way valve; the cylinder diameter of each grouting cylinder is set according to its corresponding material ratio to be mixed, so that the volume ratio of the material to be mixed is compared with the corresponding grouting cylinder The cross-sectional area ratio is the same.
The new slurry mixing grouting system according to claim 1, characterized in that: there are the same number of double-extending oil cylinders as the grouting cylinders and a three-position four-way reversing valve; the pistons of each double-extending oil cylinder The rod and the piston rod of the grouting cylinder are rigidly connected one by one, and the oil circuits of the double-extending cylinders are connected in series and then connected to the A and B ports of the three-position four-way reversing valve to form a closed oil circuit.