Tunnel grouting stirring self-cleaning equipment based on hydrophobic layer

Abstract

Tunnel grouting stirring self-cleaning equipment based on a hydrophobic layer comprises a walking mechanism, a stirring mechanism, a cleaning mechanism, a water supply mechanism and a grouting mechanism. The stirring mechanism comprises a stirring barrel, a transmission shaft and stirring blades; the cleaning mechanism comprises a connecting rod, a steel wire brush and a high-pressure water sprayer; the stirring charging barrel is mounted on the walking mechanism, a mounting hole is formed in the transmission shaft, the stirring blade is detachably mounted in the mounting hole, and the high-pressure water sprayer is arranged on the inner side of the edge of the top of the stirring charging barrel; the connecting rod is a telescopic rod which can be shortened to a mounting state or extended to a cleaning state, the steel wire brush is fixed at the outer end of the connecting rod, the inner end of the connecting rod is detachably connected with the mounting hole, and when the connecting rod is extended to the cleaning state, the steel wire brush is in contact with the inner wall of the stirring charging barrel; and hydrophobic layers are arranged on the inner wall and the bottom of the stirring charging barrel. The utility model reduces the workload of cleaning, ensures the cleaning effect, and belongs to the technical field of tunnel grouting stirring equipment.

Description

Technical Field

[0001] This utility model relates to tunnel grouting mixing equipment, specifically to a tunnel grouting mixing self-cleaning equipment based on a hydrophobic layer. Background Technology

[0002] Tunnel grouting is a tunnel construction technique aimed at reinforcing the surrounding rock, improving geological conditions, and ensuring tunnel stability. Currently widely used grouting techniques include advanced small-diameter pipe grouting, full-section curtain grouting, and large-pipe roof grouting.

[0003] Mobile tunnel grouting equipment is a type of mechanical equipment specifically designed for tunnel grouting. It is widely used in tunnel engineering. Its main function is to deliver cement grout, which has been mixed on-site, to the soil to be reinforced through a booster pump, thereby achieving cement grout diffusion and reinforcement.

[0004] Mobile grouting mixers are a type of tunnel grouting mixer, easily moved on construction sites. Their main function is to pump cement grout to designated locations. Traditional grouting mixers generally include a mixing drum, a suction drum, a motor, a booster pump, a drive shaft, and mixing blades. An electric actuator is installed above the mixing drum. In use, the mixing drum is filled with cement grout, which enters the suction drum through the discharge port. The piston reciprocates and pumps the grout into the grouting pipe, diffusing it into the soil to be reinforced, thus achieving the effect of soil reinforcement and improvement.

[0005] Cleaning the mixing drum is crucial for ensuring the normal operation of the equipment and the quality of the cement slurry. Currently used tunnel grouting mixers have the following drawbacks: 1. They often require manual washing, which is ineffective, wastes manpower, and is unlikely to achieve self-cleaning. 2. During manual cleaning, the cement slurry often hardens, requiring hammering to remove the hardened lumps, causing severe wear on the mixing drum and deformation. 3. The equipment has a short service life and maintenance is often inadequate. Utility Model Content

[0006] To address the technical problems existing in the prior art, the purpose of this utility model is to provide a tunnel grouting mixing self-cleaning device based on a hydrophobic layer, thereby reducing the workload of cleaning and ensuring the cleaning effect.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A tunnel grouting mixing self-cleaning device based on a hydrophobic layer includes a traveling mechanism, a mixing mechanism, a cleaning mechanism, a water supply mechanism, and a grouting mechanism. The mixing mechanism includes a mixing cylinder, a drive shaft, and mixing blades. The cleaning mechanism includes a connecting rod, a wire brush, and a high-pressure water sprayer. The mixing cylinder is mounted on the traveling mechanism. A rotatable drive shaft is vertically mounted at the center of the mixing cylinder, and the drive shaft has mounting holes. The mixing blades are detachably mounted in the mounting holes. The high-pressure water sprayer is located on the inner side of the top edge of the mixing cylinder and is connected to the water supply mechanism. The lower part of the mixing cylinder has a discharge port, which is connected to the grouting mechanism. The connecting rod is a telescopic rod that can be shortened to the installation state or extended to the cleaning state. The outer end of the connecting rod is fixed with a wire brush, and the inner end is detachably connected to the mounting hole. When the connecting rod is extended to the cleaning state, the wire brush contacts the inner wall of the mixing cylinder. The inner wall and bottom of the mixing cylinder are provided with a hydrophobic layer.

[0009] As a preferred embodiment, the stirring blades are connected to the mounting hole during the stirring state, and the connecting rod is connected to the mounting hole during the cleaning state.

[0010] As a preferred embodiment, the stirring blade is connected to the mounting hole via a threaded connector, and the connecting rod is connected to the mounting hole via a threaded connector.

[0011] As a preferred embodiment, the drive shaft is provided with two sets of mounting holes, one set located at the top and one set located at the bottom; each set of mounting holes has three mounting holes, which are evenly distributed around the outside of the drive shaft.

[0012] As a preferred embodiment, the traveling mechanism includes a material cylinder base plate and casters; the mixing cylinder is fixed on the material cylinder base plate, and the casters are located below the material cylinder base plate.

[0013] As a preferred option, the material cylinder seat plate is equipped with a fixed vertical beam to reinforce the mixing cylinder.

[0014] As a preferred embodiment, the stirring mechanism also includes a drive motor and a coupling, with the drive motor connected to the upper end of the transmission shaft via the coupling; a fixed crossbeam is mounted on the upper end of the stirring cylinder, and the drive motor is mounted on the fixed crossbeam.

[0015] As a preferred option, the cleaning mechanism includes multiple high-pressure water sprayers evenly distributed in a circle, with the high-pressure water sprayers spraying diagonally downwards.

[0016] As a preferred option, a filter screen is provided at the feed inlet.

[0017] As a preferred embodiment, a tunnel grouting mixing and self-cleaning device based on a hydrophobic layer further includes a suction cylinder; the grouting mechanism includes a discharge pipe and a discharge pump; the discharge port and the suction cylinder are connected through the discharge pipe; the suction cylinder transports materials to the tunnel through another discharge pipe, in which a discharge pump is installed.

[0018] The principle of this utility model is:

[0019] By using a hydrophobic layer, wire brushes, and high-pressure water jets in combination, the three work synergistically to ensure a good cleaning effect on the inner wall and bottom of the grouting mixing drum. The hydrophobic layer significantly reduces the hardening of residual cement slurry, preventing it from adhering to the inner wall of the mixing drum. The wire brushes can brush off a small amount of cement slurry adhering to the side walls, and the high-pressure water jets can also wash off a small amount of cement slurry adhering to the side walls, but the main purpose is to rinse the bottom of the mixing drum. Finally, the high-pressure water jets wash away the remaining cement slurry. Simultaneously, the hydrophobic layer covers the entire side wall and bottom of the mixing drum, multiple wire brushes rotating with the drive shaft can also cover the inner wall of the mixing drum, and the combination of multiple high-pressure water jets and spray angles can cover the entire area of ​​the mixing drum. Through the combination of these three methods, complete cleaning of the mixing drum is achieved. Good cleaning results are achieved in both cleaning efficiency and coverage.

[0020] Depending on whether the equipment is in a stirring or cleaning state, install stirring blades or wire brushes. The stirring mechanism and the cleaning mechanism share the same drive motor and transmission shaft.

[0021] This utility model has the following advantages:

[0022] 1. The cleaning process can be automated by assembling and disassembling only a few parts, which reduces the overall workload of cleaning and can achieve full coverage of the cleaning area, ensuring the cleaning effect and extending the service life of the equipment.

[0023] 2. A telescopic connecting rod is used. When shortened, it is in the installation state, which facilitates the installation of the connecting rod. When extended, it is in the cleaning state, which facilitates the contact between the wire brush and the inner wall of the mixing cylinder, ensuring the cleaning effect.

[0024] 3. Cleaning is done with a wire brush, which is not easily worn and is easy to replace.

[0025] 4. High-pressure water jet cleaning can be used as a secondary supplement to wire brush cleaning and for bottom cleaning, offering flexible placement. Simultaneously, the high-pressure water jet can also be used to clean the agitator blades, connecting rods, and wire brushes.

[0026] 5. The equipment is equipped with a walking mechanism, which facilitates its movement.

[0027] 6. The use of fixed vertical beams can reinforce the connection between the mixing cylinder and the cylinder seat plate.

[0028] 7. A fixed crossbeam is used to position the drive motor at the top of the mixing drum for easy maintenance.

[0029] 8. Use a filter screen to remove cement lumps, ensuring the quality of the grouting fluid and preventing pipe blockage. Attached Figure Description

[0030] Figure 1 This is a 3D diagram of a tunnel grouting mixing and self-cleaning device based on a hydrophobic layer.

[0031] Among them, 1-mixing cylinder, 2-drive shaft, 3-wire brush, 4-high pressure water sprayer, 5-drive motor, 6-drainage layer, 7-connecting rod, 8-ring pipe, 9-discharge port, 10-cylinder seat plate, 11-universal wheel, 12-fixed crossbeam, 13-fixed vertical beam, 14-water inlet pipe, 15-discharge pipe, 16-threaded connector, 17-water supply mechanism, 18-suction cylinder, 19-discharge pump, 20-tunnel. Detailed Implementation

[0032] The present invention will be further described in detail below with reference to specific embodiments.

[0033] A tunnel grouting mixing self-cleaning device based on a hydrophobic layer includes a traveling mechanism, a mixing mechanism, a cleaning mechanism, a water supply mechanism, and a grouting mechanism. The mixing mechanism includes a mixing cylinder, a drive shaft, and mixing blades. The cleaning mechanism includes a connecting rod, a wire brush, and a high-pressure water sprayer. The mixing cylinder is mounted on the traveling mechanism. A rotatable drive shaft is vertically mounted at the center of the mixing cylinder, and the drive shaft has mounting holes. The mixing blades are detachably mounted in the mounting holes. The high-pressure water sprayer is located on the inner side of the top edge of the mixing cylinder and is connected to the water supply mechanism. The lower part of the mixing cylinder has a discharge port, which is connected to the grouting mechanism. The connecting rod is a telescopic rod that can be shortened to the installation state or extended to the cleaning state. The outer end of the connecting rod is fixed with a wire brush, and the inner end is detachably connected to the mounting hole. When the connecting rod is extended to the cleaning state, the wire brush contacts the inner wall of the mixing cylinder. The inner wall and bottom of the mixing cylinder are provided with a hydrophobic layer.

[0034] In this embodiment, the connecting rod adopts a telescopic structure similar to a selfie stick, which is manually locked when extended to its longest cleaning state. This is a common structure in the art.

[0035] In stirring mode, the stirring blades are connected to the mounting holes; in cleaning mode, the connecting rod is connected to the mounting holes. Choose to install either the stirring blades or the connecting rod as needed.

[0036] The stirring blades are connected to the mounting holes via threaded connectors, as are the connecting rods. Threaded connectors, also known as threaded joints, are easy to use.

[0037] The drive shaft has two sets of mounting holes, one set at the top and one set at the bottom; each set of mounting holes has three mounting holes, which are evenly distributed around the outside of the drive shaft.

[0038] In this embodiment, there are six wire brushes, with three wire brushes in each group evenly distributed at a 120° angle.

[0039] The traveling mechanism includes a material cylinder base plate and casters; the mixing cylinder is fixed on the material cylinder base plate, and the casters are located below the material cylinder base plate.

[0040] The mixing drum base plate is equipped with fixed vertical beams to reinforce the mixing drum. There can be multiple fixed vertical beams, evenly distributed around the circumference, surrounding the mixing drum.

[0041] The mixing mechanism also includes a drive motor and a coupling. The drive motor is connected to the upper end of the transmission shaft through the coupling. A fixed crossbeam is erected on the upper end of the mixing cylinder, and the drive motor is mounted on the fixed crossbeam.

[0042] The cleaning mechanism consists of multiple high-pressure water sprayers evenly distributed in a circle, spraying water diagonally downwards. The spray direction of the high-pressure water sprayers can be set to be all the same or partially the same, as long as it can achieve full coverage of the scrubbing dead corners.

[0043] In this embodiment, eight high-pressure water jets are used. The water supply system includes a water source, an inlet pipe, and a water pump. The water source is connected to the high-pressure water jets via the inlet pipe, and the water pump is connected to the inlet pipe. The inlet pipe includes interconnected straight pipes and annular pipes. The straight pipes are connected to the water source, and the eight high-pressure water jets are connected to the annular pipes. Preferably, the high-pressure water jets use intermittent water jet flushing, which provides a better rinsing effect. Residual cement slurry and cement lumps are more likely to adhere to the bottom of the mixing drum; therefore, the high-pressure water jets need to cover these areas.

[0044] A filter screen is installed at the discharge port. The discharge port is located at the bottom of the side wall of the mixing cylinder.

[0045] A tunnel grouting mixing and self-cleaning device based on a hydrophobic layer further includes a suction cylinder; the grouting mechanism includes a discharge pipe and a discharge pump; the discharge port and the suction cylinder are connected through the discharge pipe; the suction cylinder transports material to the tunnel through another discharge pipe, in which a discharge pump is installed. In this embodiment, the material in the mixing cylinder flows into the suction cylinder by gravity.

[0046] In this embodiment, the wire brush includes a brush plate and wires, with the brush plate connected to the drive shaft. The wire brush is rectangular. Wires of appropriate strength and length must be selected. Sufficiently hard wires are necessary to ensure that residual adhesive cement slurry can be brushed off, and appropriately long wires are necessary to ensure that the wires can contact the entire sidewall when moving circumferentially. However, wires that are too hard or too long will also cause wear.

[0047] In this embodiment, a hydrophobic layer is formed on the inner wall and bottom of the mixing cylinder by spraying the superhydrophobic material, allowing for long-term use. If the coating wears down, it can be re-sprayed. Due to the presence of the hydrophobic layer, residual cement slurry does not easily adhere to the inner wall and bottom.

[0048] The usage process of this utility model is as follows:

[0049] 1) Move the tunnel grouting mixing self-cleaning equipment to the construction site.

[0050] 2) Before the first use of the tunnel grouting mixing self-cleaning equipment, a superhydrophobic material is sprayed onto the inner wall and bottom of the mixing cylinder to form a hydrophobic layer. Subsequently, the coating is re-sprayed as needed based on the actual wear of the coating.

[0051] 3) After the cement slurry is evenly mixed in the mixing drum of the tunnel grouting mixing self-cleaning equipment, the discharge port equipped with a filter screen is opened, and then it enters the suction cylinder, waiting for the discharge pump to extract it.

[0052] 4) Start the discharge pump. The cement slurry is delivered to the tunnel soil layer through the discharge pipe and diffused into the soil to be reinforced. The presence of a hydrophobic layer prevents residual cement slurry from adhering to the inner wall and bottom of the mixing cylinder during the mixing process.

[0053] 5) After grouting is completed, replace the mixing blades on the drive shaft with a connecting rod and a wire brush for cleaning. First, shorten the connecting rod, install it in the mounting hole, then extend and lock it.

[0054] 6) Start the water supply mechanism and connect the water source. The high-pressure water sprayer starts spraying water for cleaning. The drive shaft drives the connecting rod and wire brush to rotate. The wire brush brushes off a small amount of residual cement slurry on the inner wall. The high-pressure water sprayer powerfully washes the inner wall and bottom of the mixing cylinder.

[0055] This completes the cleaning of the tunnel grouting mixing self-cleaning equipment, with residual liquid discharged into the suction cylinder for disposal. The tunnel grouting mixing self-cleaning equipment is then ready for future use.

[0056] In addition to the methods mentioned in the above embodiments, other existing materials with good anti-wall adhesion properties for cement slurry can be used as superhydrophobic materials. The number and angle of the high-pressure water sprayers can be selected according to actual needs, as long as the cleaning effect can be achieved. An openable and closable drain can be provided below the mixing drum to discharge cleaning waste liquid. These modifications are all within the protection scope of this utility model.

[0057] The above embodiments are preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any changes, modifications, substitutions, combinations, or simplifications made without departing from the spirit and principle of the present utility model shall be considered equivalent substitutions and shall be included within the protection scope of the present utility model.

Claims

1. A tunnel grouting mixing and self-cleaning device based on a hydrophobic layer, characterized in that: The system includes a walking mechanism, a mixing mechanism, a cleaning mechanism, a water supply mechanism, and a grouting mechanism. The mixing mechanism includes a mixing cylinder, a drive shaft, and mixing blades. The cleaning mechanism includes a connecting rod, a wire brush, and a high-pressure water sprayer. The mixing cylinder is mounted on the walking mechanism. A rotatable drive shaft is vertically mounted at the center of the mixing cylinder, and the drive shaft has mounting holes. The mixing blades are detachably mounted in the mounting holes. The high-pressure water sprayer is located on the inner side of the top edge of the mixing cylinder and is connected to the water supply mechanism. The mixing cylinder has a discharge port at the bottom, which is connected to the grouting mechanism. The connecting rod is a telescopic rod that can be shortened to the installation state or extended to the cleaning state. The outer end of the connecting rod is fixed with a wire brush, and the inner end is detachably connected to the mounting hole. When the connecting rod is extended to the cleaning state, the wire brush contacts the inner wall of the mixing cylinder. The inner wall and bottom of the mixing cylinder are provided with a hydrophobic layer.

2. The tunnel grouting mixing self-cleaning device based on a hydrophobic layer according to claim 1, characterized in that: When stirring, the stirring blades are connected to the mounting holes; when cleaning, the connecting rod is connected to the mounting holes.

3. The tunnel grouting mixing self-cleaning device based on a hydrophobic layer according to claim 1, characterized in that: The stirring blades are connected to the mounting holes via threaded connectors, and the connecting rod is also connected to the mounting holes via threaded connectors.

4. A tunnel grouting mixing self-cleaning device based on a hydrophobic layer according to claim 1, characterized in that: The drive shaft has two sets of mounting holes, one set at the top and one set at the bottom; each set of mounting holes has three mounting holes, which are evenly distributed around the outside of the drive shaft.

5. A tunnel grouting mixing self-cleaning device based on a hydrophobic layer according to claim 1, characterized in that: The traveling mechanism includes a material cylinder base plate and casters; the mixing cylinder is fixed on the material cylinder base plate, and the casters are located below the material cylinder base plate.

6. A tunnel grouting mixing self-cleaning device based on a hydrophobic layer according to claim 5, characterized in that: The material cylinder seat plate is equipped with a fixed vertical beam to reinforce the mixing cylinder.

7. A tunnel grouting mixing self-cleaning device based on a hydrophobic layer according to claim 1, characterized in that: The mixing mechanism also includes a drive motor and a coupling. The drive motor is connected to the upper end of the transmission shaft through the coupling. A fixed crossbeam is mounted on the upper end of the mixing cylinder, and the drive motor is mounted on the fixed crossbeam.

8. A tunnel grouting mixing self-cleaning device based on a hydrophobic layer according to claim 1, characterized in that: The cleaning mechanism consists of multiple high-pressure water sprayers, evenly distributed in a circle, which spray water diagonally downwards.

9. A tunnel grouting mixing self-cleaning device based on a hydrophobic layer according to claim 1, characterized in that: A filter screen is installed at the feed inlet.

10. A tunnel grouting mixing self-cleaning device based on a hydrophobic layer according to claim 1, characterized in that: It also includes a suction cylinder; the grouting mechanism includes a discharge pipe and a discharge pump; the discharge port and the suction cylinder are connected through the discharge pipe; the suction cylinder transports materials to the tunnel through another discharge pipe, in which a discharge pump is installed.

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