CN210122918U

CN210122918U - Hole sealing device

Info

Publication number: CN210122918U
Application number: CN201920411868.9U
Authority: CN
Inventors: 李学彬
Original assignee: North China Institute of Science and Technology
Current assignee: North China Institute of Science and Technology
Priority date: 2019-03-28
Filing date: 2019-03-28
Publication date: 2020-03-03
Anticipated expiration: 2029-03-28

Abstract

The embodiment of the utility model discloses hole sealing device relates to engineering such as mine and struts the field, can be applicable to the shutoff of rapid hardening expanded material in the annular space hole and use. The method comprises the following steps: the stirring and conveying device comprises a stirring cavity, a feeding port is arranged at one end of the stirring cavity, at least a first row of blades and a second row of blades are axially arranged on the inner wall of the stirring cavity, the first row of blades and the second row of blades divide the space in the stirring cavity into spiral spaces, and a discharging port is arranged at the other end, opposite to the feeding port, of the stirring cavity; the positioning discharger comprises a diversion cavity, one end of the diversion cavity is provided with a guide pipe, the guide pipe is butted with the discharge port, and the other end of the diversion cavity is provided with a plurality of first diversion channels; still annotate the material post including the location, the location is annotated the material post and is cyclic annular column structure, and location is annotated material post one end and is equipped with the current stopper, and location is annotated the material post and is equipped with a plurality of notes material passageways of being connected with first water conservancy diversion passageway cooperation on week. The utility model is suitable for a to the annular space's of formation such as stock or anchor rope hole shutoff.

Description

Hole sealing device

Technical Field

The utility model relates to an underground works such as mine, tunnel and subway by-pass strut technical field, especially relate to a hole sealing device.

Background

The anchor cable and the anchor rod are used as an effective supporting and reinforcing mode for roadways, side slopes and the like, and are widely applied to relevant fields of geotechnical engineering, mining, subway tunnel construction and the like. In the anchor cable or anchor bolt supporting construction, the plugging of the annular space hole formed by anchoring the anchor cable or anchor bolt in the drill hole becomes a necessary process, and the commonly used hole sealing method is mainly grouting hole sealing, but the solidification speed is slow and the shrinkage is easy, so that the supporting effect of the anchor bolt or anchor bolt can be influenced. The rapid hardening expansion material that appears at present, the solidification rate is very fast and difficult shrink, is a comparatively ideal and is used for stock or anchor rope hole sealing material, in order to promote its application on the shutoff of annular space hole, needs a plugging device that is applicable to the rapid hardening expansion material shutoff and uses in the annular space hole urgently.

SUMMERY OF THE UTILITY MODEL

In view of this, the embodiment of the utility model provides a hole sealing device can be applicable to the shutoff of rapid hardening expanding material in annular space hole and use.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a hole sealing device, characterized by comprising: the stirring and feeding device comprises a stirring cavity, wherein a feeding port is arranged at one end of the stirring cavity, at least a first row of blades and a second row of blades are axially arranged on the inner wall of the stirring cavity, the first row of blades and the second row of blades are arranged in a staggered manner, the free ends of the first row of blades and the second row of blades face opposite directions, the space in the stirring cavity is divided into spiral spaces by the first row of blades and the second row of blades, and a discharging port is arranged at the other end, opposite to the feeding port, of the stirring cavity;

the positioning discharger comprises a diversion cavity, one end of the diversion cavity is provided with a guide pipe, the guide pipe is in butt joint with the discharge hole, and the other end of the diversion cavity is provided with a plurality of first diversion channels;

still annotate the material post including the location, the location is annotated the material post and is cyclic annular column structure, location is annotated material post one end and is equipped with the current stopper, the current stopper is the disc structure be equipped with the check valve on the disc structure, location annotate material post week be equipped with a plurality of notes material passageways that first water conservancy diversion passageway cooperation is connected.

Preferably, a feeding bin is further arranged between the injection port and the stirring cavity and comprises a first feeding bin and a second feeding bin, the first feeding bin and the second feeding bin are of horn-shaped structures with wide outer parts and narrow inner parts, and a first channel and a second channel from the first feeding bin to the stirring cavity are arranged at the ends, opposite to the discharge port, of the first feeding bin and the second feeding bin;

a screw shaft is further axially arranged in the stirring cavity, the screw shaft is connected to the bottom surfaces of the first feeding bin and the second feeding bin and is positioned between the first channel and the second channel, and outlets of the first channel and the second channel are arranged towards the screw shaft.

Preferably, some or all of the blades in the first row and the second row are provided with meshes.

Preferably, the material injection channel is a guide pipe, a guide pipe positioning ring is arranged on the positioning material injection column in the circumferential direction at intervals of a preset length, and the guide pipe penetrates through the guide pipe positioning ring.

Preferably, the injection passage is provided with a wedge-shaped structure or a radial pointed structure at one end in the drill hole

Preferably, a groove is provided on the disc structure.

The embodiment of the utility model provides a hole sealing device, include: the stirring and feeding device comprises a stirring cavity, wherein a feeding port is arranged at one end of the stirring cavity, at least a first row of blades and a second row of blades are axially arranged on the inner wall of the stirring cavity, the first row of blades and the second row of blades are arranged in a staggered manner, the free ends of the first row of blades and the second row of blades face opposite directions, the space in the stirring cavity is divided into spiral spaces by the first row of blades and the second row of blades, and a discharging port is arranged at the other end, opposite to the feeding port, of the stirring cavity; the positioning discharger comprises a diversion cavity, one end of the diversion cavity is provided with a guide pipe, the guide pipe is in butt joint with the discharge hole, and the other end of the diversion cavity is provided with a plurality of first diversion channels; still annotate the material post including the location, the location is annotated the material post and is cyclic annular column structure, location is annotated material post one end and is equipped with the current stopper, location is annotated the material post and is equipped with in week with a plurality of notes material passageways that first water conservancy diversion passageway cooperation is connected. The structure is simple, and the plugging device can be suitable for plugging the rapid-setting expansion material in the annular space hole. The method is particularly suitable for plugging hole sections near the orifice of the anchor rod or anchor cable hole in the supporting engineering so as to keep the stability of the surrounding rock and the anchor rod or anchor cable.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view of an application structure of a hole sealing device in a surrounding rock according to an embodiment of the present invention;

FIG. 2 is a schematic view of the stirring conveyer in FIG. 1;

FIG. 3 is a schematic diagram of the structure of the shunting cavity of the embodiment shown in FIG. 1;

FIG. 4 is a front view of the positioning and injection column structure of FIG. 1;

FIG. 5 is a bottom view of the positioning post of FIG. 4;

fig. 6 is a schematic view of an application structure of the positioning injection column in fig. 1 according to an embodiment.

Detailed Description

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

It should be understood that the described embodiments are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Example one

Referring to fig. 1 to 6, the embodiment of the utility model provides a hole sealing device, during underground works such as mainly used mine tunnel, tunnel or subway by pass contained water regional anchor rope or stock support, carry out the hole sealing to the drilling that is provided with stock or anchor rope.

The device is including stirring conveying ware 1 and location discharger 2, the stirring conveying ware is including stirring chamber 11, stirring chamber one end is equipped with sprue 12, be equipped with at least first row blade 13 and second row blade 14 along the axial on the stirring intracavity wall, first row blade arranges the crisscross setting of blade with the second, and the free end orientation of first row blade and second row blade is opposite, and first row blade arranges the space cut-off one-tenth heliciform space (the helix of stirring intracavity in figure 2) of blade with the second, the other end that the stirring chamber is relative with the sprue is equipped with discharge gate 15.

The positioning discharging device 2 comprises a shunting cavity 21 which is used for shunting the mixture stirred and mixed in the stirring cavity and sending the mixture to a corresponding material injection channel 26 on the positioning material injection column; one end of the shunting cavity 21 is provided with a guide pipe 22, the guide pipe is in butt joint with the discharge hole 15, and the other end of the shunting cavity is provided with a plurality of first flow guide channels 23.

The grouting device is characterized by further comprising a positioning grouting column 24, wherein the positioning grouting column is of an annular column structure, one end of the positioning grouting column is provided with a flow stopper 25, the flow stopper 25 is a disc structure body, and the disc structure body is provided with a one-way valve (not shown in the figure) which is used as a grouting inlet when grouting is needed and is communicated into a drill hole in a one-way mode to prevent grouting from flowing back; and a plurality of injection channels 26 which are matched and connected with the first flow guide channels are arranged on the positioning injection column in the circumferential direction.

In the embodiment, two or more glue raw materials are injected into the stirring conveyor according to a certain proportion, two or more raw materials are mixed in the raw material conveying process through the first row of blades and the second row of blades arranged on the inner wall of the stirring cavity of the stirring conveyor, finally, the mixture is transferred to the diversion cavity from the discharge port, the mixture is conveyed to the injection channel in the circumferential direction of the positioning injection column through the diversion cavity, and the mixture is injected into an annular space region formed by the anchor rod or the anchor cable and the drill hole through the injection channel so as to plug the hole of the anchor rod or the anchor cable. Owing to set up the different blade of orientation in the stirring intracavity, when the raw materials gets into the stirring intracavity, flow the in-process in the spiral space that two rows of blades were cut apart into at the raw materials, under the direction cutting effect of the first row blade in the stirring intracavity and the second row blade, because glue flows to the discharge gate in stirring chamber towards opposite direction respectively, turbulent phenomenon can appear in the glue flow in the stirring intracavity, under turbulent phenomenon's effect, the glue of different levels collides with each other in order to mix integratively, just so can realize the mixture of glue, later pour into annular space into in order to realize shutoff stock or anchor rope hole through the location discharger. The device has simple structure and can be suitable for plugging the rapid-setting expansion material in the annular space hole. The method is particularly suitable for plugging hole sections near the orifice of the anchor rod or anchor cable hole in the supporting engineering so as to keep the stability of the surrounding rock and the anchor rod or anchor cable.

In this embodiment, as an optional embodiment, a feeding bin is further disposed between the injection port 12 and the stirring cavity, and includes a first feeding bin 16 and a second feeding bin 17, the first feeding bin and the second feeding bin are horn-shaped structures with wide outer portions and narrow inner portions, and first and second channels (not shown in the figure) are disposed at ends of the first and second feeding bins opposite to the discharge port and reach the stirring cavity. At least one glue is respectively put into the first feeding bin and the second feeding bin, wherein the glue is Marilyn, and special hole sealing agent preparation raw materials such as Marilyn A material and Marilyn B material, Roxike AB double material or joint mixture single material are arranged at present.

It can be understood that in anchor rope or anchor bolt support of upward drilling such as roof, because long-term water drenching leads to the drilling surrounding rock medium to flow out, and the surrounding rock is loose, and the current mode of passing through the anchoring agent anchor is inefficacy easily, influences the stability of supporting, and this kind of hole sealing agent that utilizes gel hole sealing agent to make carries out the hole sealing to anchor rope or anchor rod hole, is difficult for inefficacy, can effectively guarantee the stability of supporting, can also be applicable to water-bearing region such as underground works stock or anchor rope hole sealing.

A screw shaft (not shown in the figure) is further axially arranged in the stirring cavity, the screw shaft is connected to the bottom surfaces of the first feeding bin and the second feeding bin and is positioned between the first channel and the second channel, and outlets of the first channel and the second channel are arranged towards the screw shaft. Therefore, when the glue is required to be stirred and mixed, after the glue is injected into the raw materials in the feeding bin, the spiral shaft is started to rotate, when the materials flow out from the first channel and the second channel to the rotary spiral shaft respectively, the rotary spiral shaft can accumulate the raw materials around the spiral shaft, the mixing of various materials can be accelerated, and the mixing can be more uniform.

In this embodiment, it can be understood that, at the position where the bottom surfaces of the first bin and the second bin are connected to the screw shaft, a driving component for driving the screw shaft to rotate may be built in, where the driving component includes a dc micro-motor, which is called a "micro-motor" as a whole, and refers to a motor with a diameter less than 160mm or a rated power less than 750 mW. The hole sealing agent is a gel substance when not in contact with air, and can be solidified and expanded when meeting the air, and the hole sealing agent can be used for sealing the hole between the wall of the drilled hole and the anchor rod or the anchor cable after being expanded, so that the effect of quickly, conveniently and effectively sealing the drilled hole of the anchor rod or the anchor cable is achieved.

In this embodiment, as a preferred embodiment, some or all of the blades in the first row and the second row are provided with meshes. Therefore, in the process that the glue is mixed and flows to the discharge hole of the stirring cavity in opposite directions respectively, when the glue collides with the meshes on the blades, the glue is filtered, the glue which does not pass through the meshes flows to the discharge hole of the stirring cavity along the side part of the spiral shaft and the channel between the spiral shaft and the two rows of blades, and the glue is secondarily stirred by the spiral shaft in the flowing process, so that the mixture flowing to the discharge hole is more uniform.

In this embodiment, as an optional embodiment, the flow stopper 25 is a disc structure, and a through hole is formed in the center of the disc structure, and is used for being matched with the positioning injection column to fix the positioning injection column. The disc structure body is also provided with a plurality of pore channels, the pore channels are matched with the number, the size and the positions of the material injection channels 26, and the outer diameter of the positioning flow stopper is larger than the diameter of the annular space so as to seal the hole opening when injecting the hole sealing mixture into the annular space and prevent the mixed liquid from overflowing. Secondly, when the material injection channel is a conduit, the conduit is inserted into a pore channel on the flow stopper, and the flow stopper also has a function of positioning the conduit in the circumferential direction, so that the conduit can be fixed, and the conduit is ensured to be immobile in the material injection process to the annular space.

In this embodiment, as an optional embodiment, a second discharge hole 28 is disposed at the other end of the injection channel 26 for positioning the injection column, and the second discharge hole is of a wedge-shaped structure or an arc-shaped structure, that is, an end hole of the injection channel located in the drill hole has a wedge-shaped structure or a radial pointed structure. It will be appreciated that the injection passage 26 may wobble during the process of pushing the injection material into the annular space, such that the discharge ports may reduce the possibility of rubbing against the inner wall of the borehole due to wobble in the circumferential direction due to the discharge ports of the wedge, radial spike or arc structures facing the centerline of the borehole.

Specifically, the flow stopper is a disc structure body, and a groove is formed in the disc structure body, so that after hole sealing is completed, when further grouting is needed, a grouting pipeline 3 can be arranged at the groove to pour grout to reinforce surrounding rock. Wherein the one-way valve may be disposed in the groove.

In this embodiment, as an optional embodiment, the material injection channel is a conduit, a conduit positioning ring 27 is arranged on the positioning material injection column in the circumferential direction at intervals of a predetermined length, and the conduit is inserted into the conduit positioning ring, so that the conduit can be prevented from bending or bending.

For clear, complete disclosure the embodiment of the utility model provides a technical scheme combines this embodiment hole sealing device now to give detailed description to the hole sealing application example in the stock support as follows:

referring to fig. 1 and 6, after the anchor rod M is fixedly installed in the borehole, the cylindrical hole of the positioning discharger is aligned with and sleeved on the anchor rod or anchor cable, and the anchor rod or anchor cable is pushed into the annular space formed by the anchor rod or anchor cable and the borehole to a predetermined depth, which in this application example is: the distance from the orifice is 100mm, the diversion cavity of the positioning discharger is connected with the stirring conveyor, the material A and the material B which are dispersed in Marilk are injected into the stirring conveyor in proportion, a pneumatic glue gun can be used in the specific injection method, the mixture flows into an annular space from an outlet of the material injection channel after passing through the connection diversion cavity and the positioning material injection column, the mixture is subjected to chemical reaction, the volume is expanded by 2-3 times, the shear strength reaches 20-30 MPa, the anchor cable or anchor rod can be tightly drilled and sealed, and the stability of supporting the anchor cable or anchor rod in surrounding rocks is improved by extruding the anchor cable or anchor rod. And after the sealing of the anchor rod hole is finished, the tray and the nut are forced to finish the anchor rod supporting installation.

Further, in order to further grout the surrounding rock W, after the completion of the anchor rod installation, an L-shaped thin steel pipe of 6mm × 1mm × 500mm is set in advance in an annular space as a grout pipe 3. And after the hole sealing of the anchor rod hole is finished, connecting a grouting pump with the grouting pipe, beginning grouting cement, stopping grouting after the designed grouting pressure or grouting amount is reached, realizing the grouting of the surrounding rock by using the anchor rod hole, and forming the anchor rod support into a full-length anchoring anchor rod support (the plugging section of the mixture is only 100mm near the orifice) so as to reinforce the surrounding rock. It can be understood that the grouting pipe can be inserted into the grouting pipe according to the requirement within a preset time before the sealant is not solidified, and grouting is convenient when grouting is needed later.

The Marilsan A material can also be prepared by the following steps: isocyanate or a water repellent, wherein the Marilsan B material can also be: polyether polyols or blowing agents.

Example two

The embodiment of the utility model provides a still provide a method of carrying out the hole sealing with embodiment one hole sealing device, be applied to annular space's shutoff, including the step:

fixedly installing an anchor rod or an anchor cable in the drill hole;

aligning and sleeving the positioning discharger on the anchor rod or the anchor cable through the axial columnar hole of the positioning injection column, and pushing the positioning discharger into an annular space formed by the anchor rod or the anchor cable and the drilled hole;

stopping when the positioning discharging device is pushed to the preset depth of the annular space, and fixing a flow stopper on the positioning discharging device on the orifice to prevent overflow in the process of injecting materials into the annular space;

correspondingly communicating a plurality of material injection channels arranged in the circumferential direction of the positioning discharging device and a plurality of first flow guide channels positioned at one end of the orifice with the flow dividing cavity;

connecting a guide pipe at the other end of the shunting cavity with a discharge hole in the stirring cavity in a butt joint manner;

connecting a filling port of the stirring cavity with an injector;

putting glue into the injector, wherein the glue comprises a Marilyn A material and a Marilyn B material;

injecting the glue into a filling port by using the injector, and enabling the glue to flow into the stirring cavity through the filling port;

under the guiding cutting action of the first row of blades and the second row of blades in the stirring cavity, in the process that the glue respectively flows to the discharge hole of the stirring cavity in opposite directions, the glue in the stirring cavity flows to generate a turbulent flow phenomenon;

under the action of the turbulent flow phenomenon, the glue at different layers collide with each other to be mixed into a whole;

the hole sealing mixture obtained by mixing the adhesive through the stirring cavity flows into the diversion cavity through a discharge hole at the other end of the stirring cavity;

the flow dividing cavity is divided into a plurality of strands through the first flow guide channel, the strands flow into a plurality of injection channels in a positioning injection column in the annular space, and the strands flow into the annular space from the injection channels;

and when the mixture enters the annular space, the mixture begins to expand and finally solidifies, so that the volume of the mixture filled in the annular space is expanded to plug the anchor rod or the anchor cable hole.

The embodiment of the utility model provides a hole sealing method passes through above-mentioned step, because set up the different blade of orientation in the stirring intracavity, when the raw materials gets into the stirring intracavity, flow the in-process in the spiral space that two rows of blades were cut apart into at the raw materials, under the direction cutting action of the first row blade in the stirring intracavity and the second row blade, because glue flows to the discharge gate in stirring chamber towards opposite direction respectively, turbulent phenomenon can appear in the glue flow of stirring intracavity, under turbulent phenomenon's effect, the glue of different levels collides each other in order to mix an organic whole, just so can realize the mixture of glue, later pour into annular space into in order to realize shutoff stock or anchor rope hole through the location discharger. The method for plugging the annular space hole is simple, and can be suitable for plugging the rapid-setting expansion material in the annular space hole.

As an alternative embodiment, said injecting said glue into said injection port by said injector, and flowing into said stirring cavity through said injection port further comprises: injecting Marilsan A into a first feeding bin, injecting Marilsan B into a second feeding bin, and starting a spiral shaft in a stirring cavity to rotate;

the Marilsan A material and the Marilsan B material respectively flow into the stirring cavity towards the spiral shaft through the first channel and the second channel;

the screw shaft rapidly stirs the Marilyn A material and the Marilyn B material through self rotation, simultaneously, the first row of blades and the second row of blades in the stirring cavity cut the flowing Marilyn A material and the flowing Marilyn B material, and the glue respectively flows in opposite directions to accelerate mixing.

As another alternative embodiment, when the screw shaft rapidly stirs the marasmin a material and the marasmin B material through rotation of the screw shaft, and the first row of blades and the second row of blades in the stirring cavity cut the flowing marasmin a material and marasmin B material, the method further includes the steps of respectively flowing the glue in opposite directions to the discharge hole of the stirring cavity: in the process that the glue flows to the discharge hole of the stirring cavity in opposite directions, the glue is filtered when colliding with meshes on the blades;

the glue which does not pass through the meshes flows to a discharge hole of the stirring cavity along the side part of the spiral shaft and a channel between the spiral shaft and the two rows of blades;

in the flowing process, the screw shaft carries out secondary stirring on the mixture so as to enable the mixture flowing to the discharge hole to be more uniform.

Specifically, before plugging the bolt or anchor line hole, the method further comprises: and placing the grouting pipe into the drilled hole so as to facilitate subsequent grouting. Or,

after plugging the anchor rod or anchor cable hole, the method further comprises the following steps: inserting a grouting pipe in a preset time;

and connecting the grouting pipe with a grouting pump, and performing surrounding rock grouting on the anchor rod or the anchor cable hole through the grouting pipe so as to reinforce the surrounding rock.

In this embodiment, in order to prevent the mixture from entering a gap between the positioning injection column and the anchor rod or the anchor cable in the process of injecting the mixture into the annular space by pushing the positioning injection column into the anchor rod or the anchor cable hole, an elastic material is arranged on the inner wall of the positioning injection column, the diameter of the hole where the positioning injection column is matched and positioned with the anchor rod or the anchor cable is smaller than that of the anchor rod or the anchor cable, and the resilience of the elastic material is greater than or equal to the tolerance of interference fit between the positioning injection column and the anchor rod or the anchor cable.

According to the hole sealing device and the hole sealing method provided in the first embodiment and the second embodiment, the hole sealing device and the hole sealing method can be suitable for the application of the rapid hardening expansion material in the hole opening of the anchor rod or the anchor cable hole or the annular space hole formed in the whole length, are favorable for popularizing the application of the rapid hardening expansion material in the blocking of the annular space hole in the anchor rod or the anchor cable support, and correspondingly bring about the innovation of the support technology.

It is to be understood that the description is as concise and as obvious as possible from a clear disclosure. The utility model discloses each embodiment is the utility model discloses the spirit unanimous basically, and the emphasis is different in the narration, and scheme effect can refer to each other, just no longer gives unnecessary details here.

It should be noted that the terms "upper", "lower", and the like, herein indicate orientations and positional relationships, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. Relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. The term "comprising", without further limitation, means that the element so defined is not excluded from the group consisting of additional identical elements in the process, method, article, or apparatus that comprises the element. As will be appreciated by one of ordinary skill in the art, the situation may be specified.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A hole sealing device, characterized by comprising: the stirring and feeding device comprises a stirring cavity, wherein a feeding port is arranged at one end of the stirring cavity, at least a first row of blades and a second row of blades are axially arranged on the inner wall of the stirring cavity, the first row of blades and the second row of blades are arranged in a staggered manner, the free ends of the first row of blades and the second row of blades face opposite directions, the space in the stirring cavity is divided into spiral spaces by the first row of blades and the second row of blades, and a discharging port is arranged at the other end, opposite to the feeding port, of the stirring cavity;

2. The hole sealing device according to claim 1, wherein a feeding bin is further arranged between the injection port and the stirring cavity and comprises a first feeding bin and a second feeding bin, the first feeding bin and the second feeding bin are of horn-shaped structures with wide outer parts and narrow inner parts, and a first channel and a second channel are arranged at the ends of the first feeding bin and the second feeding bin, which are opposite to the discharge port, of the stirring cavity;

3. The hole sealing device according to claim 1 or 2, wherein some or all of the blades in the first and second rows are provided with meshes.

4. The hole sealing device according to claim 3, wherein the injecting passage is a conduit, and a conduit positioning ring is arranged on the circumference of the positioning injecting column at intervals of a predetermined length, and the conduit is inserted therein.

5. The sealing device according to claim 4, wherein the injection channel has a wedge-shaped structure or a radial tip-shaped structure at one end in the borehole.

6. The sealing device of claim 1, wherein a groove is provided on the disc structure.