High-pressure jet grouting pile construction equipment capable of preventing mud from invading

Abstract

The utility model relates to the technical field of rotary jet grouting piles, in particular to slurry invasion prevention high-pressure rotary jet grouting pile construction equipment which comprises a rotating pipe, a telescopic assembly, a sealing assembly and a reset assembly, two discharging pipes are arranged on one side of the rotating pipe, a fixed baffle is arranged on one side of each discharging pipe, and discharging nozzles are arranged on one sides of the discharging pipes. The telescopic assembly is arranged on the inner side of the fixed baffle and comprises a pressure spoiler, an extrusion spray head and a movable spring, two discharging pipes are arranged on one side of the rotating pipe, the tension of cement paste to the pressure spoiler is larger than the elastic force of the movable spring, and part of cement paste drives the pressure spoiler to extrude the extrusion spray head to extrude the movable restraining piece; and after high-pressure rotary spraying is finished, the movable spring drives the extrusion spraying head to automatically retract, then the reset spring drives the movable restraining piece to reset, the situation that blocking is caused due to the fact that the slurry flows backwards into the inner side of the extrusion spraying head is prevented, the probability of engineering problems is reduced, and the device is very convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary spray piles, in particular to high-pressure rotary spray pile construction equipment which is resistant to mud intrusion. Background Art

[0002] High-pressure jet grouting piles use high-pressure rotating nozzles to spray cement slurry into the soil layer and mix it with the soil to form a continuous overlapping cement reinforcement body. The construction occupies a small area, has low vibration and low noise, and has the advantages of saving wood and steel, being durable and inexpensive. It has been widely used in hydraulic structures, industrial buildings, civil buildings and foundation projects of bridges;

[0003] The bottom end of the slurry delivery pipe of the existing high-pressure jet grouting pile is connected to the nozzle, and the cement slurry is sprayed from the nozzle through the slurry delivery pipe to perform underground operations;

[0004] However, after the high-pressure rotary jet grouting is completed, some mud can easily enter the inside of the slurry pipe from the nozzle. Long-term use will cause a large amount of mud to enter, which can easily cause blockage inside the slurry pipe and seriously affect the progress of the project. Utility Model Content

[0005] The utility model aims to provide a high-pressure rotary jet pile construction device which is resistant to mud intrusion, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above purpose, the utility model provides the following technical solution: a high-pressure rotary jet pile construction equipment that prevents mud intrusion, the high-pressure rotary jet pile construction equipment that prevents mud intrusion includes:

[0007] A rotating tube, wherein two discharge pipes are provided on one side of the rotating tube, a fixed baffle is provided on one side of each discharge pipe, and a discharge nozzle is provided on one side of the discharge pipe;

[0008] A telescopic assembly, the telescopic assembly is arranged inside the fixed baffle, and the telescopic assembly includes a pressure baffle, an extrusion nozzle, and a movable spring;

[0009] A sealing component, which is arranged inside the discharge nozzle and includes two movable restraining parts;

[0010] A reset assembly is connected to the movable restraining member, and the reset assembly comprises a support plate, a guide restraining rod, a guide sleeve, and a reset spring.

[0011] Preferably, one side of the discharge nozzle is connected to a fixed baffle, a movable groove is provided at the connection between the fixed baffle and the discharge nozzle, and a pressure baffle is provided inside the movable groove.

[0012] Preferably, an extrusion nozzle is provided on one side of the pressure baffle, a movable spring is provided on the inner side of the movable groove, the movable spring is sleeved on the extrusion nozzle, and two sealing grooves are provided on the discharge nozzle.

[0013] Preferably, each of the movable restraining members is arranged on the inner side of the sealing groove, two support plates are arranged on the inner side of the discharge nozzle, and two guide sleeves are arranged on one side of each movable restraining member.

[0014] Preferably, two guide constraint rods are provided on one side of the support plate, and each guide constraint rod is sleeved on the inner side of a corresponding guide sleeve.

[0015] Preferably, two return springs are provided between the movable restraining member and the support plate, and each return spring is sleeved on a corresponding guide sleeve.

[0016] Preferably, a bottom rotating drill bit is provided on one side of the rotating tube, a drill rod is provided on one side of the rotating tube, the drill rod is connected to the rotating tube through threads, and a plurality of rotating fixing parts are provided on the rotating tube.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] Two discharge pipes are provided on one side of the rotating tube. The tension of the cement slurry on the pressure baffle plate is greater than the elastic force of the movable spring. Part of the cement slurry drives the pressure baffle plate to squeeze the extrusion nozzle toward the movable restraint part, so that the cement slurry is ejected from the extrusion nozzle 2. After the high-pressure rotary spraying is completed, the movable spring drives the extrusion nozzle to automatically retract, and then the reset spring drives the movable restraint part to reset, preventing the mud from backflowing into the inside of the extrusion nozzle and causing blockage, thereby reducing the probability of problems in the project. It is very easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the sealing component structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the telescopic assembly structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the reset component of the utility model;

[0023] Figure 5 It is a partial structural schematic diagram of the utility model.

[0024] In the figure: rotating tube 1, discharge pipe 2, fixed baffle 3, discharge nozzle 4, support plate 5, movable constraint 6, guide constraint rod 7, guide sleeve 8, return spring 9, movable groove 10, pressure baffle 11, extrusion nozzle 12, movable spring 13, drill rod 14, bottom rotating drill bit 15, rotating fixing part 16. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Please refer to the attached Figure 1-5 , this application provides the following three preferred embodiments.

[0027] Embodiment 1

[0028] A high-pressure jet grouting pile construction device for preventing mud intrusion comprises:

[0029] Two discharge pipes 2 are provided on one side of the rotating tube 1, and a fixed baffle 3 is provided on one side of each discharge pipe 2. A discharge nozzle 4 is provided on one side of the discharge pipe 2. A telescopic component is provided on the inner side of the fixed baffle 3. The telescopic component includes a pressure baffle 11, an extrusion nozzle 12, and a movable spring 13. One side of the discharge nozzle 4 is connected to the fixed baffle 3. A movable groove 10 is provided at the connection between the fixed baffle 3 and the discharge nozzle 4. A pressure baffle 11 is provided on the inner side of the movable groove 10. An extrusion nozzle 12 is provided on one side of the pressure baffle 11. A movable spring 13 is provided on the inner side of the movable groove 10. The movable spring 13 is sleeved on the extrusion nozzle 12. Two sealing grooves are provided on the discharge nozzle 4. When the cement slurry flows to the pressure baffle 11, the tension of the cement slurry on the pressure baffle 11 is greater than the elastic force of the movable spring 13. Part of the cement slurry drives the pressure baffle 11 to squeeze the extrusion nozzle 12 toward the movable constraint 6, so that the cement slurry is ejected from the extrusion nozzle 12.

[0030] Embodiment 2

[0031] On the basis of Example 1, the sealing assembly is arranged on the inner side of the discharge nozzle 4, and the sealing assembly includes two movable restraints 6, each of which is arranged on the inner side of the sealing groove, and two support plates 5 are arranged on the inner side of the discharge nozzle 4. Two guide sleeves 8 are arranged on one side of each movable restraint 6, and two guide restraint rods 7 are arranged on one side of the support plate 5. Each guide restraint rod 7 is sleeved on the inner side of the corresponding guide sleeve 8. When the high-pressure rotary spraying is completed, the movable spring 13 drives the extrusion nozzle 12 to automatically retract, and then the reset spring 9 drives the movable restraint 6 to reset to prevent mud from flowing back into the inner side of the extrusion nozzle 12 and causing blockage.

[0032] Embodiment 3

[0033] On the basis of the second embodiment, the reset assembly is connected to the movable constraint part 6, and the reset assembly includes a support plate 5, a guide constraint rod 7, a guide sleeve 8, and a reset spring 9. Two reset springs 9 are arranged between the movable constraint part 6 and the support plate 5, and each reset spring 9 is sleeved on the corresponding guide sleeve 8. A bottom rotating drill bit 15 is provided on one side of the rotating tube 1, and a drill rod 14 is provided on one side of the rotating tube 1. The drill rod 14 is connected to the rotating tube 1 by threads. A plurality of rotating fixings 16 are provided on the rotating tube 1. When in use, cement slurry is poured through the telescopic assembly and the sealing assembly. When rotating, the soil is loosened through the bottom rotating drill bit 15 and a plurality of rotating fixings 16 on one side of the rotating tube 1, so that the discharge pipe 2 can move up and down smoothly.

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

Claims

1. A high-pressure jet grouting pile construction equipment that prevents mud intrusion, characterized in that: The high-pressure jet grouting pile construction equipment for preventing mud intrusion comprises: A rotating tube (1), wherein two discharge tubes (2) are provided on one side of the rotating tube (1), a fixed baffle (3) is provided on one side of each discharge tube (2), and a discharge nozzle (4) is provided on one side of the discharge tube (2); A telescopic component, the telescopic component being arranged inside the fixed baffle (3), the telescopic component comprising a pressure baffle (11), an extrusion nozzle (12), and a movable spring (13); A sealing component, the sealing component being arranged inside the discharge nozzle (4), the sealing component comprising two movable restraining parts (6); A reset assembly is connected to a movable restraining member (6), and comprises a support plate (5), a guide restraining rod (7), a guide sleeve (8), and a reset spring (9).

2. The high-pressure jet grouting pile construction equipment for preventing mud intrusion according to claim 1 is characterized in that: One side of the discharge nozzle (4) is connected to the fixed baffle (3), a movable groove (10) is provided at the connection between the fixed baffle (3) and the discharge nozzle (4), and a pressure baffle (11) is provided inside the movable groove (10).

3. The high-pressure jet grouting pile construction equipment for preventing mud intrusion according to claim 2 is characterized in that: An extrusion nozzle (12) is provided on one side of the pressure baffle (11), a movable spring (13) is provided inside the movable groove (10), the movable spring (13) is sleeved on the extrusion nozzle (12), and two sealing grooves are provided on the discharge nozzle (4).

4. The high-pressure jet grouting pile construction equipment for preventing mud intrusion according to claim 3 is characterized in that: Each movable restraining member (6) is arranged on the inner side of the sealing groove, two supporting plates (5) are arranged on the inner side of the discharge nozzle (4), and two guide sleeves (8) are arranged on one side of each movable restraining member (6).

5. The high-pressure jet grouting pile construction equipment for preventing mud intrusion according to claim 4 is characterized in that: Two guide restraint rods (7) are provided on one side of the support plate (5), and each guide restraint rod (7) is sleeved on the inner side of a corresponding guide sleeve (8).

6. The high-pressure jet grouting pile construction equipment for preventing mud intrusion according to claim 5 is characterized in that: Two return springs (9) are arranged between the movable restraining member (6) and the supporting plate (5), and each return spring (9) is sleeved on a corresponding guide sleeve (8).

7. The high-pressure jet grouting pile construction equipment for preventing mud intrusion according to claim 6 is characterized by: A bottom rotating drill bit (15) is provided on one side of the rotating tube (1), a drill rod (14) is provided on one side of the rotating tube (1), the drill rod (14) is connected to the rotating tube (1) by threads, and a plurality of rotating fixing parts (16) are provided on the rotating tube (1).

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