Bi-component polymer foam material mixing pipe applied to roadway construction

Abstract

The invention is applicable to the technical field of material mixing, and provides a bi-component polymer foam material mixing pipe applied to roadway construction, which comprises a feed pipe assembly, one end of the feed pipe assembly is fixedly connected with a mixing assembly; the feeding pipe assembly comprises a feeding piece, a mixing piece is fixedly inserted into the feeding piece, and in the using process of the bi-component polymer foam material mixing pipe applied to roadway construction, the problem that in the using process of an existing bi-component polymer foam material mixing pipe applied to roadway construction, the mixing piece is not prone to falling off in the using process of the existing bi-component polymer foam material mixing pipe applied to roadway construction can be solved. The technical problems that in the prior art, the mixing efficiency is low, different components cannot be rapidly and effectively mixed, the quality and safety of a spraying material are affected, and in the using process, different devices are needed for mixing the components in different proportions, so that the applicability is low in the using process, and then the later spraying effect is affected are solved.

Description

Technical Field

[0001] The invention relates to the technical field of material mixing, and more specifically to a two-component polymer foam material mixing tube used in tunnel construction. Background Art

[0002] In the context of improving the safety standards of mining production, tunnel spraying engineering technology has been widely used and valued; this technology has been widely used in the fields of mine fire prevention, tunnel support, tunnel water plugging, temporary support, slope support, etc., which can not only improve the stability of the surrounding rock mass, but also effectively extend its service life; especially in the field of tunnel spraying, the application of two-component polymer foam materials is becoming more and more extensive. This type of material has shown extremely effective performance in the field of mine structure reinforcement and fire prevention and plugging.

[0003] During the process of tunnel construction spraying, uneven mixing will cause uneven coating performance, resulting in poor support and protection effects, shedding and cracking; construction progress will be delayed, increasing costs; safety hazards will increase, toxic gases will leak easily, and the roof will fall easily; the working environment will deteriorate, dust pollution will be serious, and construction difficulty will increase accordingly. Fully mixing the two chemical components to ensure that the material achieves the best performance is a prerequisite for using this type of foam material spraying; therefore, in order to meet the needs of mine support and fire protection, and to achieve the purpose of high universality and good safety, it is particularly important to develop a new type of two-component polymer foam material mixing tube for tunnel construction: However, the existing two-component polymer foam material mixing tube used in tunnel construction has low mixing efficiency during use, and cannot quickly and effectively mix different components. In addition, the equipment has a single structure, and the equipment needs to be replaced for different construction scenarios and mixing ratios. It cannot effectively adapt to the changing needs of different working conditions. At the same time, under the same working conditions, it cannot effectively deal with the occurrence of special situations where the tunnel is uneven and has serious water leakage, resulting in its low applicability during use, which in turn affects the subsequent spraying effect. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a two-component polymer foam material mixing tube for use in tunnel construction, which can improve the mixing efficiency of spray materials during use, ensure that the two-component materials can obtain preliminary diversion, cross-mixing and reverse swirl, and further enhance the mixing through a orifice plate design, thereby significantly improving the uniformity and performance of the materials.

[0005] To achieve the above object, the present invention provides the following technical solutions: A two-component polymer foam material mixing pipe used in tunnel construction comprises a feed pipe assembly, one end of which is fixedly connected to a mixing assembly.

[0006] The feed pipe assembly comprises a feed piece, and a mixing piece is inserted and fixed inside the feed piece.

[0007] The feeding piece includes a self-driven mixing pipe, and two symmetrical mixing pipes of equal proportion are arranged on the outer peripheral side of the self-driven mixing pipe, and a first external transition pipe is arranged on one end of the self-driven mixing pipe, and a first internal transition pipe is arranged on the inner wall of the first external transition pipe, and one end of the first internal transition pipe is located inside the first external transition pipe and is arranged on the second internal transition pipe, and a first connecting flange fixedly connected to the mixing piece is fixed on one end of the first external transition pipe, and a self-driven chamber is arranged on the inner wall of the self-driven mixing pipe, and a self-driven pressurizer, an impeller seat, and a guide body are arranged in sequence inside the self-driven chamber, and an impeller is installed in the impeller seat.

[0008] The mixing piece includes a connecting plate that is plugged and fixed inside the first connecting flange, a connecting column is fixed at the center position of one side of the connecting plate, a first spring that is sleeved and fitted on the peripheral side of the connecting column is fixed on one side of the connecting plate, a first sliding ring that is slidably fitted with the connecting column is fixed at one end of the first spring, a sliding cylinder that is slidably fitted with the peripheral side of the connecting column is slidably fitted, one end of the sliding cylinder is connected and fixed with a sliding cylinder that is slidably fitted with the connecting column, a plurality of turbine blades are fixed on the peripheral side of the sliding cylinder, and two symmetrical stirring propellers are fixed on the inner wall of the sliding cylinder.

[0009] The present invention is further configured as follows: one end of the connecting column is located inside the sliding cylinder and is threadedly connected to a limiting nut, one side of the limiting nut is fixed with a second spring that is sleeved and fitted on the peripheral side of the connecting column, and one end of the second spring is fixed with a second sliding ring that slides with the connecting column.

[0010] The present invention is further configured as follows: two symmetrical plug holes are provided on one side of the connection plate.

[0011] Two symmetrical extension plates are fixed to the inner wall of the first connecting flange, a rectangular frame is fixed between the two extension plates, two symmetrical threaded columns are fixed to one side of the rectangular frame, and the two threaded columns are respectively plugged and matched with the two plug holes.

[0012] The present invention is further configured such that: the self-driven mixing pipe is connected to a high-ratio connector relative to the other end face, and the two equal-ratio mixing pipes are connected to an equal-ratio connector relative to one end face.

[0013] A sealing rail is fixed on one side of the first connecting flange.

[0014] The present invention is further configured as follows: the mixing assembly comprises a second connecting flange fixedly connected to the first connecting flange, and one side of the second connecting flange is provided with an annular groove which is snap-fitted with the sealing rail.

[0015] The present invention is further configured as follows: a spiral blade mixing pipe shell is provided on one side of the second connecting flange, a second external transition pipe is provided on one end of the spiral blade mixing pipe shell, a third internal transition pipe is fixed to the inner wall of the second external transition pipe, a section of the third internal transition pipe is located inside the second external transition pipe and is connected to a fourth internal transition pipe, and a orifice mixing pipe shell connected to the fourth internal transition pipe is provided on one end of the second external transition pipe. The present invention is further configured as follows: a plurality of spiral blades are fixed in a linear array inside the spiral blade mixing pipe shell, a plurality of reverse spiral blades are fixed in a linear array inside the spiral blade mixing pipe shell, and edge flow holes are provided on one side of the spiral blades and the reverse spiral blades.

[0016] The present invention is further configured as follows: a first position-limiting mixing orifice plate is fixed to the inner wall of the orifice mixing pipe shell, a second position-limiting mixing orifice plate is fixed to the inner wall of the orifice mixing pipe shell on the side away from the first position-limiting mixing orifice plate, a plurality of orifice plate connecting rods are fixed between the first position-limiting mixing orifice plate and the second position-limiting mixing orifice plate, a plurality of mixing orifice plates are arranged at equal intervals between the first position-limiting mixing orifice plate and the second position-limiting mixing orifice plate, and a plurality of the mixing orifice plates are fixedly connected to a plurality of orifice plate connecting rods.

[0017] The advantages of the present invention are: (1) The present invention allows the spray material to be mixed and flow rapidly in a self-propelled pipeline under the action of a pneumatic operating device, thereby driving the sliding cylinder and two stirring propellers fixed to the inner wall of the sliding cylinder to rotate and slide back and forth on the peripheral side of the connecting column, thereby preliminarily mixing the spray material that has initially passed through the second internal transition pipe, so that the spray material can be preliminarily mixed, thereby preliminarily improving the uniformity and performance of the spray material, and further improving the subsequent spraying effect.

[0018] (2) During the use of the present invention, the spray material after preliminary mixing passes through the spiral blades and reverse spiral blades arranged inside the spiral blade mixing pipe shell, thereby further mixing the spray material, so that the spray material can be diverted, cross-mixed and reversely swirled in the flow, and combined with the edge flow holes successively arranged on one side of the spiral blades and reverse spiral blades, the spray material entering the spiral blade mixing pipe shell can also flow smoothly. The entire spiral blade mixing pipe shell is slightly larger than other pipes, which further improves the mixing effect of the spray material inside the spiral blade mixing pipe shell.

[0019] (3) During the use of the present invention, the further mixed spray material enters the orifice mixing pipe shell for final mixing. After the spray material enters the orifice mixing pipe shell, the orifice mixing pipe shell can protect the internal structure and circulate the spray material. The first limiting mixing orifice plate, the mixing orifice plate, and the second limiting mixing orifice plate are the main structures of the orifice mixing pipe shell, which play a role in final mixing of the spray material, so that the spray material is more evenly mixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The present invention is a schematic structural diagram of a two-component polymer foam material mixing tube used in tunnel construction.

[0021] Figure 2 The present invention is a structural front view of a two-component polymer foam material mixing tube used in tunnel construction.

[0022] Figure 3 It is a schematic structural diagram of the feed pipe assembly of the present invention.

[0023] Figure 4 It is a schematic diagram of the cross-sectional structure of the feed pipe assembly of the present invention.

[0024] Figure 5 It is a front view of the cross-sectional structure of the feed pipe assembly of the present invention.

[0025] Figure 6 It is a schematic diagram of the structure of the mixing component of the present invention.

[0026] Figure 7 It is a schematic diagram of the cross-sectional structure of the mixing assembly of the present invention.

[0027] Figure 8 It is a schematic diagram of the cross-sectional structure of the feed piece of the present invention.

[0028] Fig. 9 It is a schematic structural diagram of the mixed material piece of the present invention.

[0029] Fig.10 It is a schematic structural diagram of the mixing piece from another angle of the present invention.

[0030] Fig.11 It is a front view of the mixing piece of the present invention.

[0031] Fig.12 It is a schematic diagram of the internal cross-sectional structure of the self-driven mixing pipeline of the present invention.

[0032] Fig.13 It is a mixing flow chart during the use of the present invention.

[0033] Fig.14 This is a large-scale drawing of the equipment tunnel construction of the present invention.

[0034] In the figure: 1, feed pipe assembly; 2, mixing assembly; 3, feed piece; 4, mixing piece; 201, second connecting flange; 202, annular groove; 203, spiral blade mixing pipe shell; 204, second external transition pipe; 205, third internal transition pipe; 206, orifice mixing pipe shell; 207, spiral blade; 208, reverse spiral blade; 209, edge flow hole; 210, first limited mixing orifice; 211, second limited mixing orifice; 212, orifice connecting rod; 213, mixing orifice; 214, Fourth internal transition duct; 301, self-driven mixing duct; 302, equal-proportional mixing duct; 303, first external transition duct; 304, first internal transition duct; 305, second internal transition duct; 306, first connecting flange; 307, extension plate; 308, rectangular frame; 309, threaded column; 310, high-proportional connector; 311, equal-proportional connector; 312, sealing rail; 3011, self-driven pressurizer; 3012, self-driven chamber; 3013, impeller seat; 3014, impeller; 3015, guide body; 401, connecting plate; 402, connecting column; 403, first spring; 404, first sliding ring; 405, sliding cylinder; 406, turbine blade; 407, stirring propeller; 408, sliding cylinder; 409, limiting nut; 410, second spring; 411, second sliding ring; 412, plug hole. DETAILED DESCRIPTION

[0035] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0036] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0037] In the present invention, unless otherwise specified, the directions used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0038] For example, see Figure 1-14 , the present invention provides the following technical solutions: A two-component polymer foam material mixing pipe used in tunnel construction, specifically, comprises a feed pipe assembly 1, one end of which is fixedly connected to a mixing assembly 2; the feed pipe assembly 1 comprises a feed piece 3, a mixing piece 4 is inserted and fixed inside the feed piece 3; the feed piece 3 comprises a self-propelled mixing pipe 301, the outer peripheral side of the self-propelled mixing pipe 301 is connected to two symmetrical mixing pipes 302 of equal proportion, one end of the self-propelled mixing pipe 301 is connected to a first external transition pipe 303, the first external The inner wall of the internal transition pipe 303 is connected with a first internal transition pipe 304, one end of the first internal transition pipe 304 is located inside the first external transition pipe 303 and is connected with a second internal transition pipe 305, and one end of the first external transition pipe 303 is fixed with a first connecting flange 306 fixedly connected to the mixing element 4; the inner wall of the self-driven mixing pipe 301 is provided with a self-driven chamber 3012, and the self-driven chamber 3012 is sequentially provided with a self-driven pressurizer 3011, an impeller seat 3013, and a guide body 3015, and the impeller seat 3014 is provided with a self-driven pressurizer 3011, an impeller seat 3013, and a guide body 3015. The impeller 3014 is installed in the wheel seat 3013; the mixing element 4 includes a connecting plate 401 inserted and fixed inside the first connecting flange 306, a connecting column 402 is fixed at the center position of one side of the connecting plate 401, a first spring 403 is fixed on one side of the connecting plate 401 and is sleeved and matched with the side surface of the connecting column 402, a first sliding ring 404 that is slidably matched with the connecting column 402 is fixed at one end of the first spring 403, a sliding cylinder 408 is slidably matched with the side surface of the connecting column 402, and one end of the sliding cylinder 408 is connected to the fixed A sliding cylinder 405 is provided to be slidably matched with the connecting column 402, a plurality of turbine blades 406 are fixed to the side surface of the sliding cylinder 405, and two symmetrical stirring propellers 407 are fixed to the inner wall of the sliding cylinder 405; one end of the connecting column 402 is located inside the sliding cylinder 405 and is threadedly connected to a limiting nut 409, one side of the limiting nut 409 is fixed with a second spring 410 which is sleeved and matched with the side surface of the connecting column 402, and one end of the second spring 410 is fixed with a second sliding ring 411 which is slidably matched with the connecting column 402.

[0039] The specific application of the first embodiment is: when the mixing pipe is used for spraying in a tunnel that has been cleaned to remove loose rocks, dust and moisture, the spraying material passes through the self-driven mixing pipe 301. Under the action of wind pressure and the flow force of the material itself, the material inside the pipe passes through the self-driven pressurizer 3011 arranged on the inner wall of the self-driven chamber 3012 (the structure of the self-driven pressurizer 3011 is the internal structure of the self-driven mixing pipe 301, which is similar to a spiral blade structure, so that when the material passes through the self-driven chamber 3012, under the action of wind pressure and the flow of the material, the impact force is generated by the self-driven pressurizer 3011 to achieve rapid and sufficient mixing), and the spraying material is quickly achieved under the action of the impeller 3014. When the first internal transition tube 304 connected to the inner wall of the first external transition tube 303 and one end of the first internal transition tube 304 is located in the second internal transition tube 305 connected to the inside of the first external transition tube 303, the spraying material, after preliminary transition circulation, generates a circulation impact force on the plurality of turbine blades 406 fixed on the peripheral side of the sliding cylinder 405, so that the sliding cylinder 405 rotates on the peripheral side of the connecting column 402, thereby driving the two stirring propellers 407 fixed on the inner wall of the sliding cylinder 405 to rotate at the same time, and then preliminarily mixes the spraying material passing through the second internal transition tube 305, so that the spraying material can be preliminarily mixed, thereby improving the later spraying effect; When the sliding cylinder 405 rotates on the peripheral side of the connecting column 402, the circulating force will simultaneously generate an impact force on the sliding cylinder 405, thereby driving the sliding cylinder 405 to slide on the peripheral side of the connecting column 402, and combined with the elastic force of the first spring 403 fixedly connected between the connecting plate 401 and the first sliding ring 404 and the second spring 410 fixedly connected between the limit nut 409 and the second sliding ring 411, the sliding cylinder 405 is driven to slide reciprocatingly on the peripheral side of the connecting column 402, so that the spraying material is stirred and mixed by the two stirring propellers 407 fixed on the inner wall of the sliding cylinder 405, thereby improving the later spraying effect.

[0040] For example 2, please refer to Figure 1-11, the second embodiment is improved on the basis of the first embodiment as follows. Specifically, two symmetrical plug holes 412 are opened on one side of the connecting plate 401; two symmetrical extension plates 307 are fixed to the inner wall of the first connecting flange 306, a rectangular frame 308 is fixed between the two extension plates 307, and two symmetrical threaded columns 309 are fixed on one side of the rectangular frame 308. The two threaded columns 309 are respectively plugged and matched with the two plug holes 412; the self-driven mixing pipe 301 is connected to a high-proportion connector 310 on the other end face, and the two equal-proportion mixing pipes 302 are connected to the opposite end faces. There is an equal proportion connector 311; a sealing rail 312 is fixed to one side of the first connecting flange 306; the mixing assembly 2 includes a second connecting flange 201 fixedly connected to the first connecting flange 306, and an annular groove 202 is provided on one side of the second connecting flange 201 to engage with the sealing rail 312; a spiral blade mixing pipe housing 203 is connected to one side of the second connecting flange 201, and a second external transition pipe 204 is connected to one end of the spiral blade mixing pipe housing 203, and a third internal transition pipe 204 is fixed to the inner wall of the second external transition pipe 204 05, a section of the third internal transition duct 205 is located inside the second external transition duct 204 and is connected to a fourth internal transition duct 214, and one end of the second external transition duct 204 is connected to a perforated mixing duct housing 206 connected to the fourth internal transition duct 214; a plurality of spiral blades 207 are fixed in a linear array inside the spiral blade mixing duct housing 203, and a plurality of reverse spiral blades 208 are fixed in a linear array inside the spiral blade mixing duct housing 203, and one side of the spiral blades 207 and the reverse spiral blades 208 are both penetrated There are edge flow holes 209; a first limiting mixing orifice plate 210 is fixed to the inner wall of the orifice mixing pipe shell 206, a second limiting mixing orifice plate 211 is fixed to the inner wall of the orifice mixing pipe shell 206 away from the first limiting mixing orifice plate 210, a plurality of orifice connecting rods 212 are fixed between the first limiting mixing orifice plate 210 and the second limiting mixing orifice plate 211, a plurality of mixing orifice plates 213 are arranged at equal intervals between the first limiting mixing orifice plate 210 and the second limiting mixing orifice plate 211, and the plurality of mixing orifice plates 213 are fixedly connected to the plurality of orifice connecting rods 212.

[0041] The specific application of the second embodiment is: before the use of the mixing pipeline (before use, one end of the orifice mixing pipeline housing 206 is connected and fixed with the conveying pipeline, compressor, sprayer, and spray gun in sequence, wherein the conveying pipeline, compressor, sprayer, and spray gun are all prior art, not shown in the figure, and will not be elaborated on here), the high-proportion connector 310 connected to the other end face of the self-driven mixing pipeline 301 and the equal-proportion connectors 311 connected to one end face of the two equal-proportion mixing pipelines 302 are respectively connected and fixed with the external pipelines, and then different interfaces are selected according to different components. The self-driven mixing pipeline 301 has a larger diameter and can be connected to the component with a higher proportion among components with different proportions. The equal-proportion mixing pipeline 302 can be used under the condition of 1:1 mixing, so as to achieve the spraying effect of components with different proportions; When the entire mixing pipe is spraying the two-component polymer foam material, the spraying material enters the interior of the spiral blade mixing pipe shell 203 after preliminary mixing, so that the spiral blade mixing pipe shell 203 plays a certain role in protecting the internal structure and serving as a circulation channel. After the preliminary mixing, the spraying material passes through the spiral blades 207 and the reverse spiral blades 208 arranged inside the spiral blade mixing pipe shell 203, and the spraying material is further mixed, so that the spraying material can be diverted, cross-mixed and reversely swirled in the flow, and in combination with the edge flow holes 209 sequentially arranged on one side of the spiral blades 207 and the reverse spiral blades 208, the spraying material entering the spiral blade mixing pipe shell 203 can also flow smoothly. Compared with other pipes, the entire spiral blade mixing pipe shell 203 is slightly larger, which further improves the mixing effect of the spraying material inside the spiral blade mixing pipe shell 203. After the above further mixing process is completed, the spraying material circulating in the spiral blade mixing pipe shell 203 enters the orifice mixing pipe shell 206 through the transition effect of the third internal transition pipe 205 and the fourth internal transition pipe 214 for final mixing. After the spraying material enters the orifice mixing pipe shell 206, the orifice mixing pipe shell 206 can protect the internal structure and circulate the spraying material. The first limiting mixing orifice plate 210, the mixing orifice plate 213, and the second limiting mixing orifice plate 211 serve as orifices. The main structure of the plate mixing pipe shell 206 plays a role in making the liquid mixed more evenly, and the first limiting mixing orifice plate 210 and the second limiting mixing orifice plate 211 are respectively connected to the inner wall of the orifice mixing pipe shell 206 in sequence, playing a certain fixing role, and a plurality of orifice plate connecting rods 212 are respectively fixedly connected to the first limiting mixing orifice plate 210, the mixing orifice plate 213, and the second limiting mixing orifice plate 211 in sequence, so that the first limiting mixing orifice plate 210, the mixing orifice plate 213, and the second limiting mixing orifice plate 211 become a whole.

[0042] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0043] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0044] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0046] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A two-component polymer foam material mixing pipe for use in tunnel construction, comprising a feed pipe assembly (1), characterized in that: A mixing component (2) is fixedly connected to one end of a feed pipe assembly (1); the feed pipe assembly (1) comprises a feed piece (3), a mixing component (4) is inserted and fixed inside the feed piece (3); the feed piece (3) comprises a self-propelled mixing pipe (301), two symmetrical mixing pipes (302) are arranged on the outer peripheral side of the self-propelled mixing pipe (301), one end of the self-propelled mixing pipe (301) is arranged on the outer peripheral side of the self-propelled mixing pipe (301), a first external transition pipe (303) is arranged on the inner wall of the first external transition pipe (303), a first internal transition pipe (304) is arranged on the inner wall of the first external transition pipe (303), one end of the first internal transition pipe (304) is located inside the first external transition pipe (303) and is arranged on the inner wall of the first internal transition pipe (305), and a first connecting flange (306) fixedly connected to the mixing component (4) is fixed on one end of the first external transition pipe (303); a self-propelled chamber (3012) is arranged on the inner wall of the self-propelled mixing pipe (3012), and the interior of the self-propelled chamber (3012) is arranged in sequence A self-driven pressurizer (3011), an impeller seat (3013), and a guide body (3015) are provided, and an impeller (3014) is installed in the impeller seat (3013); the mixing piece (4) comprises a connecting plate (401) plugged and fixed inside the first connecting flange (306), a connecting column (402) is fixed at the center position of one side of the connecting plate (401), and a first spring (403) is fixed on one side of the connecting plate (401) and is sleeved and fitted on the peripheral side of the connecting column (402). A first sliding ring (404) that is slidably matched with the connecting column (402) is fixed to one end of the first spring (403); a sliding cylinder (408) that is slidably matched with the connecting column (402) is slidably matched with the peripheral side surface of the connecting column (402); a sliding cylinder (405) that is slidably matched with the connecting column (402) is connected and fixed to one end of the sliding cylinder (408); a plurality of turbine blades (406) are fixed to the peripheral side surface of the sliding cylinder (405); and two symmetrical stirring propellers (407) are fixed to the inner wall of the sliding cylinder (405).

2. The two-component polymer foam material mixing pipe used for tunnel construction according to claim 1, characterized in that: One end of the connecting column (402) is threadedly connected to a limiting nut (409) located inside the sliding cylinder (405); a second spring (410) sleeved and fitted on the peripheral side of the connecting column (402) is fixed to one side of the limiting nut (409); and a second sliding ring (411) slidingly fitted with the connecting column (402) is fixed to one end of the second spring (410).

3. The two-component polymer foam material mixing pipe used for tunnel construction according to claim 2, characterized in that: Two symmetrical plug holes (412) are formed on one side of the connection plate (401); two symmetrical extension plates (307) are fixed to the inner wall of the first connection flange (306); a rectangular frame (308) is fixed between the two extension plates (307); two symmetrical threaded columns (309) are fixed on one side of the rectangular frame (308); the two threaded columns (309) are respectively plugged into the two plug holes (412).

4. A two-component polymer foam material mixing pipe for tunnel construction according to claim 3, characterized in that: The other end face of the self-propelled mixing pipe (301) is connected to a high-ratio connector (310), and the one end faces of the two equal-ratio mixing pipes (302) are both connected to equal-ratio connectors (311); a sealing rail (312) is fixed to one side of the first connecting flange (306).

5. A two-component polymer foam material mixing pipe used for tunnel construction according to claim 4, characterized in that: The material mixing assembly (2) comprises a second connecting flange (201) fixedly connected to the first connecting flange (306); an annular groove (202) for snap-fitting with the sealing rail (312) is provided on one side of the second connecting flange (201).

6. A two-component polymer foam material mixing pipe for tunnel construction according to claim 5, characterized in that: A spiral blade mixing pipe shell (203) is provided on one side of the second connection flange (201), a second external transition pipe (204) is provided on one end of the spiral blade mixing pipe shell (203), a third internal transition pipe (205) is fixed to the inner wall of the second external transition pipe (204), a section of the third internal transition pipe (205) is located inside the second external transition pipe (204) and is connected to a fourth internal transition pipe (214), and a perforated plate mixing pipe shell (206) connected to the fourth internal transition pipe (214) is provided on one end of the second external transition pipe (204).

7. A two-component polymer foam material mixing pipe for tunnel construction according to claim 6, characterized in that: A plurality of spiral blades (207) are fixed in a linear array inside the spiral blade mixing pipe housing (203), and a plurality of reverse spiral blades (208) are fixed in a linear array inside the spiral blade mixing pipe housing (203). Edge flow holes (209) are provided through one side of the spiral blades (207) and the reverse spiral blades (208).

8. The two-component polymer foam material mixing pipe used for tunnel construction according to claim 7, characterized in that: A first position-limiting mixing orifice plate (210) is fixed to the inner wall of the orifice mixing pipe shell (206); a second position-limiting mixing orifice plate (211) is fixed to the inner wall of the orifice mixing pipe shell (206) away from the first position-limiting mixing orifice plate (210); a plurality of orifice plate connecting rods (212) are fixed between the first position-limiting mixing orifice plate (210) and the second position-limiting mixing orifice plate (211); a plurality of mixing orifice plates (213) are arranged at equal intervals between the first position-limiting mixing orifice plate (210) and the second position-limiting mixing orifice plate (211); and the plurality of mixing orifice plates (213) are fixedly connected to the plurality of orifice plate connecting rods (212).

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