Device for preparing a grouting filling material for dissolving strata

Abstract

The utility model relates to preparation technical field of grouting material discloses preparation facilities of dissolution stratum grouting filling material, including stirring cavity and support, stirring cavity installs in the top of support, and the outer wall of stirring cavity one side is connected with the inlet, and the bottom of stirring cavity is connected with the discharge pipe, and the discharge pipe is connected with the pump body, wherein, the stirring cavity is provided with stirring part, including the main stirring roller and the slave stirring roller that move in the stirring cavity, and the main stirring roller is opposite rotation with the slave stirring roller, is used for mixing the material that enters from the inlet, and the bottom one side of support is connected with the moving wheel, and every moving wheel place all sets up the restrictor, the utility model discloses through the opposite rotation of main stirring roller and slave stirring roller, and the high -strength shear flow field is formed under the staggered inclination arrangement of main / slave stirring blade, and the reunion of superfine cement / admixture is thoroughly broken, ensures that nanometer -sized additive evenly disperses, is applicable to the scene that dissolution stratum is high to slurry homogeneity requirement.

Description

Technical Field

[0001] This utility model relates to the field of grouting material preparation technology, and in particular to a device for preparing grouting filling materials for karst formations. Background Technology

[0002] Due to their unique geological structure (such as karst landforms and areas with developed caves), karst formations (e.g., the presence of cavities, fissures, conduits, high permeability, active groundwater, and uneven rock strength) require significantly different grouting materials compared to relatively intact and homogeneous formations. The purpose of grouting in these formations often focuses on water plugging, seepage prevention, filling cavities, and reinforcing loose and fractured zones, rather than simply increasing bearing capacity.

[0003] Special cement-based grouts (ultrafine cement, sulfoaluminate cement), chemical grouts (acrylate, polyurethane, epoxy resin), composite grouts (cement + water glass, cement + chemical additives), paste grouts, and quick-setting pastes.

[0004] The preparation equipment needs to perform efficient stirring to ensure that the additives and admixtures are fully and evenly dispersed, especially the ultrafine materials and viscosity modifiers. Therefore, a preparation device for grouting filling materials for eroded strata is proposed. Utility Model Content

[0005] To address the technical problem that traditional equipment lacks sufficient mixing and shearing force for the special geological structure of karst formations, which requires high-speed stirring and shearing equipment, this invention provides a device for preparing grouting filling materials for karst formations.

[0006] This utility model is achieved by the following technical solution: a preparation device for grouting filling material of karst formation, including a stirring chamber and a support, the stirring chamber is installed on the top of the support, an inlet is connected to one side of the outer wall of the stirring chamber, an outlet pipe is connected to the bottom of the stirring chamber, and a pump is connected to the outlet pipe.

[0007] The mixing chamber is equipped with a mixing component, including a main mixing roller and a secondary mixing roller that move within the mixing chamber. The main mixing roller and the secondary mixing roller rotate in opposite directions to mix the material entering from the feed inlet.

[0008] As a further improvement to the above solution, a caster wheel is connected to one side of the bottom of the bracket, and a limiter is installed at each caster wheel.

[0009] As a further improvement to the above solution, the mixing component also includes a mixing motor, which is coaxially fixedly connected to the top of the mixing chamber. The output end of the mixing motor is coaxially connected to the top of the main mixing roller, and the main mixing blades are fixedly connected to the outer wall of the main mixing roller from top to bottom.

[0010] As a further improvement to the above scheme, a connecting plate is fixedly connected to the upper part of the outer wall of the main stirring roller, and a rotating hole is opened on the other side of the connecting plate. The rotating hole is rotatably connected to the upper outer wall of the secondary stirring roller, and secondary stirring blades are fixedly connected to the outer wall of the secondary stirring roller from top to bottom.

[0011] As a further improvement to the above scheme, the main stirring blades and the secondary stirring blades are arranged alternately in sequence, and both the main stirring blades and the secondary stirring blades are inclined at a certain angle in an orderly manner from top to bottom.

[0012] As a further improvement to the above scheme, an internal gear is coaxially fixedly connected to the top of the inner wall of the stirring chamber, and a driven gear is meshed with the inner side of the internal gear. The bottom end of the driven gear is coaxially installed on the top of the stirring roller.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model uses the main and secondary mixing rollers to rotate in opposite directions, and the main / secondary mixing blades are arranged in an alternating inclined manner to form a high-intensity shear flow field, which completely breaks the agglomeration of ultrafine cement / admixtures and ensures that nano-scale additives are evenly dispersed. It is suitable for scenarios where the homogeneity of slurry is required in karst formations.

[0015] 2. This utility model uses a blade tilt angle design and dual-axis reverse rotation to generate axial and radial composite vortices, thereby eliminating slurry settling and stratification, ensuring the stability of the paste-like slurry, and avoiding uneven strength during karst filling.

[0016] 3. This utility model drives the main stirring roller with a single motor → through the meshing of the internal gear with the driven gear → drives the driven stirring roller to rotate in the opposite direction, eliminating the need for an additional power source and reducing mechanical failure points; the gear enclosed design prevents slurry intrusion and is suitable for the high dust environment at the grouting site. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall structure of the apparatus for preparing grouting filling material for karst formations provided in Embodiment 1 of this utility model;

[0018] Figure 2 This utility model Figure 1 A top-view diagram;

[0019] Figure 3 This utility model Figure 2 A schematic diagram of the cross-section along the AA direction;

[0020] Figure 4 This is a schematic diagram of the internal structure of the stirring component of this utility model;

[0021] Figure 5 This is a structural schematic diagram of the mixing component of this utility model from a bottom view.

[0022] Explanation of key symbols:

[0023] 1. Mixing chamber; 11. Inlet; 12. Outlet pipe; 2. Support; 21. Casters; 3. Mixing motor; 31. Main mixing roller; 32. Main mixing blade; 33. Driven mixing roller; 34. Driven mixing blade; 35. Driven gear; 36. Internal gear; 37. Connecting plate. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0025] Example:

[0026] Please combine Figures 1-5 The preparation device for grouting filling material of the karst formation in this embodiment includes a stirring chamber 1 and a support 2. The stirring chamber 1 is installed on the top of the support 2. An inlet 11 is connected to one side of the outer wall of the stirring chamber 1. An outlet pipe 12 is connected to the bottom end of the stirring chamber 1. A pump body is connected to the outlet pipe 12.

[0027] The mixing chamber 1 is equipped with a mixing component, including a main mixing roller 31 and a secondary mixing roller 33 that move within the mixing chamber 1. The main mixing roller 31 and the secondary mixing roller 33 rotate in opposite directions to mix the material entering from the feed inlet 11.

[0028] Furthermore, the main stirring roller 31 and the secondary stirring roller 33 are rotatably disposed within the stirring chamber 1, and their rotation directions are opposite.

[0029] One side of the bottom of the bracket 2 is connected to a movable wheel 21, and each movable wheel 21 is equipped with a limiter.

[0030] The mixing component also includes a mixing motor 3, which is coaxially fixedly connected to the top of the mixing chamber 1. The output end of the mixing motor 3 is coaxially connected to the top of the main mixing roller 31. Main mixing blades 32 are fixedly connected to the outer wall of the main mixing roller 31 from top to bottom.

[0031] A connecting plate 37 is fixedly connected to the upper part of the outer wall of the main stirring roller 31. A rotating hole is opened on the other side of the connecting plate 37. The rotating hole is rotatably connected to the upper outer wall of the stirring roller 33. Stirring blades 34 are fixedly connected to the outer wall of the stirring roller 33 from top to bottom.

[0032] The main stirring blade 32 and the secondary stirring blade 34 are arranged alternately, and both the main stirring blade 32 and the secondary stirring blade 34 are arranged in an orderly manner from top to bottom at a certain angle.

[0033] Specifically, each main stirring blade 32 / secondary stirring blade 34 rotates from top to bottom around the main stirring roller 31 / secondary stirring roller 33 at an angle of 20° (not a fixed degree).

[0034] An internal gear 36 is coaxially fixedly connected to the top of the inner wall of the stirring chamber 1. A driven gear 35 is meshed with the inner side of the internal gear 36. The bottom end of the driven gear 35 is coaxially installed on the top of the stirring roller 33.

[0035] Furthermore, the main stirring roller 31 drives the driven stirring roller 33 to move via the connecting plate 37, so that the driven gear 35 rotates in the opposite direction to the main stirring roller 31 along the internal gear 36. Thus, under the reverse rotation of the staggered main stirring blades 32 and the driven stirring blades 34, the material in the stirring chamber 1 is fully sheared, and the stirring efficiency is improved.

[0036] Specifically, the internal gear 36 is welded to the inner wall of the top of the cavity 1, and the driven gear 35 meshes with the internal gear 36, so that when the main stirring roller 31 rotates, it drives the driven stirring roller 33 to rotate in the opposite direction.

[0037] The implementation principle of the apparatus for preparing grouting filling material for dissolved strata in this embodiment is as follows:

[0038] After moving the device to the designated area via the movable wheel 21, the limiter at the movable wheel 21 is activated to limit and fix the entire device.

[0039] The precisely proportioned materials are sequentially fed into the mixing chamber 1 through the feed inlet 11. After all the materials have entered the mixing chamber 1, the mixing motor 3 is started. The mixing motor 3 drives the entire main mixing roller 31 to rotate, which in turn drives multiple coaxial main mixing blades 32. With the connection of the connecting plate 37, the secondary mixing roller 33 can rotate around the main mixing roller 31. As the secondary mixing roller 33 rotates, the driven gear 35 and the internal gear 36 mesh, enabling the secondary mixing roller 33 to rotate in opposite directions to the main mixing roller 31. Through the alternating arrangement of the main mixing blades 32 and the secondary mixing blades 34, the materials in the mixing chamber 1 are stirred. The opposite rotation of the main mixing blades 32 and the secondary mixing blades 34 shears the materials, allowing the raw materials to be quickly stirred and improving the mixing efficiency.

[0040] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

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