Circulating grouting equipment for karst treatment

Abstract

The utility model relates to the technical field of karst treatment, in particular to circulating grouting equipment for karst treatment, which comprises a stirring barrel and a grouting pump, a stirring motor and a circulating pump are arranged on the stirring barrel, the bottom of the stirring barrel is communicated with a discharge pipe, the discharge pipe is communicated with a slurry storage barrel, the slurry storage barrel is communicated with a slurry inlet of the grouting pump, and the slurry storage barrel is communicated with a slurry outlet of the grouting pump. A grout outlet of the grouting pump is connected with a grouting pipe, and a flow meter is arranged on the grouting pipe; the circulating pump is connected with a circulating slurry return pipe, a filter plate and stirring blades are arranged in the stirring barrel, an output shaft of the stirring motor is fixedly connected with the stirring blades, and the output shaft of the stirring motor is rotationally connected with the filter plate; the circulating pump is arranged, grout in the hole is pumped through the circulating grout return pipe, it is ensured that the grout flows circularly, cement is prevented from precipitating, and the grouting effect is affected, meanwhile, returned grout is fed into the stirring barrel after being filtered, ingredient adding and re-stirring are convenient, and the grouting quality is effectively ensured.

Description

A circulating grouting device for karst treatment Technical Field

[0001] This utility model relates to the field of karst treatment technology, and in particular to a circulating grouting device for karst treatment. Background Technology

[0002] Circulating grouting is a special grouting technique where grout is injected into a borehole through a grouting pipe. Some of the grout seeps into karst cavities or strata, where it diffuses under pressure and fills the cavities. Simultaneously, it reacts physicochemically with the rock or soil in the strata to form concretions, thus reinforcing the strata. During circulating grouting, excess grout can be returned from the borehole to the grouting pump for continued injection, ensuring the continuity and uniformity of the grouting process. The core of this method lies in the circulating flow of the grout, which helps prevent cement sedimentation and improves the grouting effect.

[0003] In the existing technology, there is a lack of treatment for the recycled slurry. When the slurry flows in the rock strata, the rock strata will absorb cement and also be contaminated with impurities such as mud and sand. If the recycled slurry is directly sent into the grouting pump for circulation injection, it will affect the grouting quality and may even damage the grouting pump. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a circulating grouting device for karst treatment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A circulating grouting device for karst treatment includes a mixing tank and a grouting pump. The mixing tank is equipped with a stirring motor and a circulating pump. The bottom of the mixing tank is connected to a discharge pipe, which is connected to a grout storage tank. The grout storage tank is connected to the grout inlet of the grouting pump. The grout outlet of the grouting pump is connected to a grouting pipe, which is equipped with a flow meter. The circulating pump is connected to a circulating return pipe. The mixing tank contains a filter plate and stirring blades. The output shaft of the stirring motor is fixedly connected to the stirring blades and rotatably connected to the filter plate.

[0007] Preferably, the grouting pump is equipped with a pressure stabilizing tank, the pressure stabilizing tank is equipped with a pressure gauge, and the grouting pump is a three-cylinder grouting pump.

[0008] Preferably, the mixing tank has a feed flare on one side of the top, a cover plate on the upper side of the mixing tank, the mixing motor and the circulating pump are fixedly mounted on the cover plate, and the outlet pipe of the circulating pump passes through the cover plate and extends into the mixing tank.

[0009] Preferably, at least two sets of stirring blades are provided and are disposed on the upper and lower sides of the filter plate, and the edge of the filter plate is adapted to the inner wall of the stirring tank.

[0010] Preferably, the discharge pipe is equipped with a discharge pump, the discharge pipe is connected to the top of the slurry storage tank, and the slurry storage tank is equipped with an air exchange valve.

[0011] Preferably, the circulating slurry return pipe is equipped with a filter assembly and a sampling device.

[0012] The beneficial effects of this utility model are as follows:

[0013] Compared with the prior art, this utility model is equipped with a circulation pump, which extracts the grout from the hole through the circulation return grout pipe to ensure the circulation of the grout, prevent cement sedimentation and affect the grouting effect, and at the same time send the returned grout after filtration into the mixing tank for easy addition of ingredients and re-mixing, effectively ensuring the grouting quality. Attached Figure Description

[0014] Figure 1 is a three-dimensional structural schematic diagram of a circulating grouting device for karst treatment proposed in this utility model;

[0015] Figure 2 is a top view of a circulating grouting device for karst treatment proposed in this utility model.

[0016] Figure 3 is a schematic diagram of the main cross-sectional structure of the mixing tank of a circulating grouting equipment for karst treatment proposed in this utility model.

[0017] In the diagram: 1. Mixing tank; 11. Mixing motor; 12. Circulating pump; 13. Circulating slurry return pipe; 14. Discharge pipe; 15. Filter plate; 16. Mixing blades; 17. Feed flare; 18. Cover plate; 2. Slurry storage tank; 3. Grouting pump; 31. Pressure gauge; 32. Flow meter; 33. Grouting pipe. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0019] Referring to Figures 1-3, a circulating grouting device for karst treatment includes a mixing tank 1 and a grouting pump 3. The mixing tank 1 has a feed flare 17 on one side of the top, which facilitates the addition of raw materials by construction personnel and timely replenishment of materials according to the state of the grout to ensure the construction quality. The mixing tank 1 is equipped with a filter plate 15 and agitator blades 16. There are at least two sets of agitator blades 16, which are set on the upper and lower sides of the filter plate 15. As needed, dry material agitator blades are set on the upper side of the filter plate 15, and wet material agitator blades are set on the lower side of the filter plate 15 to agitate the raw materials. The filter plate 15 intercepts large particles and impurities to prevent particles from settling to the bottom and affecting the flow of the grout. In addition, the filter plate 15 can also filter the returned grout. The edge of the filter plate 15 is adapted to the inner wall of the mixing tank 1 for easy removal for cleaning and maintenance.

[0020] The upper side of the mixing tank 1 is provided with a cover plate 18. The mixing tank 1 is provided with a stirring motor 11 and a circulation pump 12. The stirring motor 11 and the circulation pump 12 are fixedly installed on the cover plate 18. The output shaft of the stirring motor 11 is fixedly connected to the stirring blade 16 to drive the stirring blade 16 to work. The output shaft of the stirring motor 11 is rotatably connected to the filter plate 15.

[0021] The outlet pipe of the circulating pump 12 passes through the cover plate 18 and extends into the mixing tank 1, so as to facilitate the feeding of the recovered slurry into the mixing tank 1 for recycling.

[0022] The bottom of the mixing tank 1 is connected to the discharge pipe 14, which is equipped with a discharge pump. The discharge pipe 14 is connected to the slurry storage tank 2, and the top of the slurry storage tank 2 is connected to the discharge pipe 14. The slurry storage tank 2 is equipped with an air exchange valve. The slurry that is mixed evenly in the mixing tank 1 is pumped into the slurry storage tank 2 by the discharge pump. Depending on the construction time, the slurry storage tank 2 can be equipped with a stirring device to stir the slurry stored in the slurry storage tank 2 to avoid sedimentation and stratification.

[0023] The grout storage tank 2 is connected to the grout inlet of the grouting pump 3. The grouting pump 3 is equipped with a pressure stabilizing tank and a pressure gauge 31. The grouting pump 3 is a three-cylinder grouting pump. The grout outlet of the grouting pump 3 is connected to the grouting pipe 33. The grouting pipe 33 is equipped with a flow meter 32. The grouting pump 3 draws grout from the grout storage tank 2, pressurizes it and sends it out. The grouting work is carried out through the grouting pipe 33 to fill the karst cavities.

[0024] The circulating pump 12 is connected to the circulating slurry return pipe 13, which is used to extract the remaining slurry from the karst cavity, re-stir and mix it, and then circulate it to prevent cement sedimentation and improve the grouting effect. The circulating slurry return pipe 13 is equipped with a filter assembly to prevent impurities from clogging the circulating pump 12 and other equipment. If there are few impurities, they can be filtered by the filter plate 15, eliminating the need for the filter assembly and reducing equipment investment costs. A flow meter can also be added as needed to record the recovered slurry, which facilitates data generation and makes it easy to replenish the consumed materials according to the parameters of the returned slurry. The circulating slurry return pipe 13 is equipped with a sampling device to detect the specific gravity of the returned slurry.

[0025] In this embodiment, the construction personnel add grouting material to the mixing tank 1 and stir to produce grout. The filter plate 15 intercepts solid materials until the grout is evenly mixed and begins to flow. The discharge pump draws the grout into the storage tank 2 for temporary storage. During the grouting operation, holes are pre-drilled to install the injection pipe. The injection pipe 33 is inserted into the hole, and the injection pump 3 works to pressurize and pump the grout. The three-cylinder injection pump outputs more stable pressure to ensure the reliability of grouting. The pressure gauge 31 detects the grouting pressure and makes timely adjustments to avoid affecting the grouting.

[0026] Grout is injected into the borehole section through the grout injection pipe. Part of the grout will penetrate into the rock mass fissures, while the other part will return through the grout return pipe 13.

[0027] Maintaining continuous flow of the grout prevents cement sedimentation, ensuring the grout remains in a flowing state for optimal grouting results. Simultaneously, the grout volume is monitored using flow meter 32, and samples of the returned grout in the circulation return pipe 13 are taken for testing. The difference in specific gravity between the incoming and returned grout is used to assess the rock formation's absorption of cement. Changes in the specific gravity difference between the incoming and returned grout reflect the rock formation's grout absorption characteristics, helping engineers better control the grouting process and quality. It also facilitates the replenishment of recovered grout by construction personnel.

[0028] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0029] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0030] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

Claims

1. A circulating grouting device for karst treatment, comprising a mixing tank (1) and a grouting pump (3), characterized in that, The mixing tank (1) is equipped with a stirring motor (11) and a circulating pump (12). The bottom of the mixing tank (1) is connected to a discharge pipe (14), and the discharge pipe (14) is connected to a slurry storage tank (2). The slurry storage tank (2) is connected to the slurry inlet of the grouting pump (3). The slurry outlet of the grouting pump (3) is connected to a grouting pipe (33), and a flow meter (32) is provided on the grouting pipe (33). The circulating pump (12) is connected to a circulating return slurry pipe (13). The mixing tank (1) is equipped with a filter plate (15) and a stirring blade (16). The output shaft of the stirring motor (11) is fixedly connected to the stirring blade (16), and the output shaft of the stirring motor (11) is rotatably connected to the filter plate (15).

2. The circulating grouting equipment for karst treatment according to claim 1, characterized in that, The grouting pump (3) is equipped with a pressure stabilizing tank, and the pressure stabilizing tank is equipped with a pressure gauge (31). The grouting pump (3) is a three-cylinder grouting pump.

3. The circulating grouting equipment for karst treatment according to claim 1, characterized in that, The mixing tank (1) has a feed vent (17) on one side of the top, and a cover plate (18) on the upper side of the mixing tank (1). The mixing motor (11) and the circulating pump (12) are fixedly installed on the cover plate (18). The outlet pipe of the circulating pump (12) passes through the cover plate (18) and extends into the mixing tank (1).

4. The circulating grouting equipment for karst treatment according to claim 3, characterized in that, The stirring blades (16) are provided in at least two sets and are arranged on the upper and lower sides of the filter plate (15). The edge of the filter plate (15) is adapted to the inner wall of the stirring tank (1).

5. A circulating grouting device for karst treatment according to claim 1, characterized in that, The discharge pipe (14) is equipped with a discharge pump, the discharge pipe (14) is connected to the top of the slurry storage tank (2), and the slurry storage tank (2) is equipped with an air exchange valve.

6. A circulating grouting device for karst treatment according to claim 1, characterized in that, The circulating slurry return pipe (13) is equipped with a filter assembly and a sampling device.

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