Passive stirring device for mixed slurry

Abstract

The utility model relates to the field of geotechnical engineering filling and grouting reinforcement, and provides a mixed slurry passive stirring device which comprises a liquid pipe A, a liquid pipe B, a mixed grouting pipe, a passive stirring pipe and a grouting head. The liquid pipe A and the liquid pipe B are communicated and then connected with one end of a mixed grouting pipe, and the other end of the mixed grouting pipe is sequentially connected with a passive stirring pipe and a grouting head; and a paddle is arranged in the driven stirring pipe. The paddle is connected with the support through a sealing bearing fixed to the center by adopting a connecting bolt, the support is installed in a fixing clamping groove in the inner side of the passive stirring pipe, the passive stirring pipe is connected with the mixed grouting pipe and the grouting head through threads, and a rubber sealing ring is adopted for preventing seepage. The mixed grouting pipe is improved on the basis of an existing mixed grouting pipe, has the advantages of being easy to apply, low in cost, simple in structure, convenient to disassemble and wash, good in mixing effect and the like, is particularly suitable for large-diameter grouting construction, and can be widely applied to construction needing mixed grout grouting reinforcement in geotechnical engineering such as tunnels, side slopes and foundations.

Description

Technical Field

[0001] The utility model relates to the field of geotechnical engineering filling and grouting reinforcement, in particular to a mixed slurry passive stirring device. Background Art

[0002] Grouting reinforcement is a crucial construction technique in underground engineering. It can be used for hardening soft strata and reinforcing tunnel linings. Mixed slurry, due to its rapid consolidation, is widely used in emergency rescue, leak plugging, and TBM segment sealing. Mixed slurry primarily utilizes a chemical reaction between two or more materials to rapidly solidify, achieving a range of functions, including backfill reinforcement, anti-seepage measures, water blocking, consolidation, landslide prevention, reduced ground subsidence, and increased foundation bearing capacity.

[0003] In actual projects, to prevent premature slurry coagulation and blockage, different slurries are typically prepared by mixing them separately and then grouting them using a mixing grouting pipe. While this ensures normal construction and avoids blockage, the lack of sufficient mixing results in a serious discrepancy between the actual consolidation of the mixed slurry and the designed solution. Currently, active mixing devices for mixed slurries exist, but their independent, small mixing chambers often prevent some slurry from being discharged in a timely manner, causing it to solidify and block the pipe. Furthermore, these devices require external power during construction, making them unsuitable for widespread application on engineering sites.

[0004] There is an urgent need to develop an efficient passive stirring device for mixed slurry to maximize the grouting consolidation effect of the mixed slurry, which can not only ensure the safety of underground projects but also have obvious economic benefits. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a passive stirring device for mixed slurry from the two aspects of improving the slurry mixing effect and facilitating engineering applications.

[0006] The utility model adopts the following technical solutions:

[0007] A mixed slurry passive stirring device, comprising a liquid pipe A, a liquid pipe B, a mixed grouting pipe, a passive stirring pipe and a grouting head;

[0008] The A liquid pipe and the B liquid pipe are connected to each other and then connected to one end of the mixing grouting pipe, and the other end of the mixing grouting pipe is connected to the passive stirring pipe and the grouting head in sequence;

[0009] The passive stirring tube is provided with a paddle.

[0010] As for any possible implementation method described above, an implementation method is further provided, wherein a fixed slot and a bracket are provided in the passive stirring tube, the paddle is mounted on the sealed bearing, the sealed bearing is mounted in the middle of the bracket, and the bracket is mounted on the inner wall of the passive stirring tube through the fixed slot.

[0011] As for any possible implementation manner described above, there is further provided an implementation manner, wherein the sealed bearing is mounted on the bracket via connecting bolts.

[0012] Any possible implementation as described above further provides an implementation, wherein the grouting head is provided with a diameter-changing section.

[0013] According to any possible implementation described above, an implementation is further provided, wherein a first internal thread is provided at one end of the mixing grouting pipe connected to the passive stirring pipe, and the passive stirring pipe is provided with a first external thread corresponding to the first internal thread, and the mixing grouting pipe and the passive stirring pipe are connected to each other through the first internal thread and the first external thread.

[0014] Any possible implementation as described above further provides an implementation, wherein a second internal thread is provided at one end of the passive stirring tube connected to the mixing grouting tube, and a second external thread corresponding to the second internal thread is provided on the grouting head, and the passive stirring tube and the grouting head are connected to each other through the second internal thread and the second external thread.

[0015] As for any possible implementation described above, an implementation is further provided, wherein the connection between the passive stirring pipe and the mixing grouting pipe and the grouting head is provided with a sealing gasket for anti-seepage.

[0016] Any possible implementation as described above further provides an implementation, wherein the liquid pipe A, the liquid pipe B, and the mixed grouting pipe are independently provided or integrated.

[0017] As for any possible implementation described above, an implementation is further provided, wherein the propeller is a three-blade propeller or a four-blade propeller.

[0018] As for any possible implementation described above, there is further provided an implementation, wherein the sealing gasket is a rubber sealing ring.

[0019] The beneficial effects of the utility model are:

[0020] On the one hand, the energy of the slurry flow can be used to drive the blades to rotate, thereby disrupting the stable flow of the mixed slurry, stirring the mixed slurry, and significantly improving the grouting reinforcement effect of the mixed slurry; on the other hand, the device is developed based on the original mixed grouting pipe, with low cost and simple application. At the same time, it is detachable, easy to clean and replace, not easy to clog the pipe, and has good engineering application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Shown is a structural schematic diagram of a passive stirring device for mixed slurry according to an embodiment of the present utility model.

[0022] Figure 2 The figure shows a schematic cross-sectional view of the structure in which the sealed bearing is installed on the bracket via connecting bolts in the embodiment.

[0023] Figure 3 The figure shows a schematic cross-sectional view of the structure in which the bracket is installed on the inner wall of the passive stirring tube through the fixing slot in the embodiment.

[0024] Figure 4 Shown is a schematic diagram of the four-blade propeller structure in an embodiment.

[0025] Figure 5 Shown is a schematic diagram of the three-blade propeller structure in the embodiment.

[0026] Figure 6 Shown is a construction flow chart using the utility model.

[0027] In the figure: 1-A liquid pipe; 2-B liquid pipe; 3-mixing grouting pipe; 4-first internal thread; 5-sealing gasket 1; 6-first external thread; 7-connecting bolt; 8-sealed bearing; 9-blade; 10-fixing slot; 11-bracket; 12-passive stirring pipe; 13-second internal thread; 14-second external thread; 15-grouting head; 16-sealing gasket 2; 17-reducing section. DETAILED DESCRIPTION

[0028] The following will describe in detail specific embodiments of the present invention with reference to the accompanying drawings. It should be noted that the technical features or combinations of technical features described in the following embodiments should not be considered isolated, and they can be combined with each other to achieve better technical effects.

[0029] like Figure 1 As shown, the embodiment of the utility model is a mixed slurry passive stirring device, comprising a liquid pipe A 1, a liquid pipe B 2, a mixed grouting pipe 3, a passive stirring pipe 12 and a grouting head 15;

[0030] The A liquid pipe 1 and the B liquid pipe 2 are connected, and then one end of the mixed grouting pipe 3 is connected, and the other end of the mixed grouting pipe 3 is sequentially connected with the passive stirring pipe 12 and the grouting head 15.

[0031] A paddle is arranged in the passive stirring pipe 12.

[0032] In one embodiment, a fixed clamping groove 10 and a support 11 are arranged in the passive stirring pipe 12, the paddle 9 is installed on the sealing bearing 8, the sealing bearing 8 is installed in the middle of the support 11, and the support 11 is installed on the inner wall of the passive stirring pipe 12 through the fixed clamping groove 10. Figure 3 As shown in the figure.

[0033] In one embodiment, the sealing bearing 8 is installed on the support 11 through a connecting bolt 7. Figure 2 As shown in the figure.

[0034] In one embodiment, the grouting head 15 is provided with a variable diameter section 17.

[0035] In one embodiment, a first internal thread 4 is arranged at one end of the mixed grouting pipe 3 connected with the passive stirring pipe 12, a first external thread 6 corresponding to the first internal thread 4 is arranged on the passive stirring pipe 12, and the mixed grouting pipe 3 and the passive stirring pipe 12 are connected through the first internal thread 4 and the first external thread 6.

[0036] In one embodiment, a second internal thread 13 is arranged at one end of the passive stirring pipe 12 connected with the mixed grouting pipe 3, a second external thread 14 corresponding to the second internal thread 13 is arranged on the grouting head 15, and the passive stirring pipe 12 and the grouting head 15 are connected through the second internal thread 13 and the second external thread 14.

[0037] In one embodiment, a sealing gasket 5, 16 for preventing seepage is arranged at the connection between the passive stirring pipe 12 and the mixed grouting pipe 3 and the grouting head 15.

[0038] In one embodiment, the A liquid pipe 1, the B liquid pipe 2, and the mixed grouting pipe 3 are independently arranged or integrally arranged.

[0039] In one embodiment, the paddle 9 is a three-blade paddle or a four-blade paddle. Figure 5 , Figure 4 As shown in the figure.

[0040] In one embodiment, the sealing gasket 5, 16 is a rubber sealing ring.

[0041] During the grouting process, different types of slurries are injected through the A liquid pipe 1 and the B liquid pipe 2, respectively, and preliminarily mixed in the mixing grouting pipe 3. When the mixed slurry reaches the position of the paddle 9, the flowing mixed slurry will drive the paddle 9 to rotate. The rotation of the paddle 9 disrupts the stable flow of the mixed slurry, thereby achieving stirring of the mixed slurry. The stirred mixed slurry is then injected into the desired position after passing through the reducing section 17 of the grouting head 15.

[0042] The passive stirring of the blades 9 can significantly improve the mixing effect of the slurry, thereby improving the grouting reinforcement effect. At the same time, the device does not require external power, is simple to use, easy to disassemble and clean, is not prone to pipe clogging, and is low in cost, with great engineering application value.

[0043] like Figure 6 As shown, the specific construction process of using the utility model is as follows:

[0044] (1) Determine the size of the passive stirring tube 12: Select a suitable mixing grouting tube 3 according to the slurry type, and determine the sizes of the passive stirring tube 12, blades 9, bracket 11, etc.

[0045] (2) Determine the size of the grouting head: Determine the size of the grouting head 15 based on the grouting position, working conditions, geological conditions, etc., combined with the size of the passive stirring tube 12.

[0046] (2) Device assembly: A passive stirring device for a mixed slurry, comprising a mixing grouting pipe 3 and a first internal thread 4 at its end, a fixed slot 10 in a passive stirring pipe 12, a bracket 11, a blade 9, a sealing bearing 8, a connecting bolt 7, a first external thread 6, a second internal thread 13, a grouting head 15 and a second external thread 14, a reducing section 17, and rubber sealing gaskets 5 and 16 for sealing and anti-seepage, and in accordance with Figure 1 and Figure 2 Assemble as shown.

[0047] (3) Drilling: Select a suitable grouting location and drill holes according to the design plan or project requirements.

[0048] (4) Connect pipelines and grouting: Connect the slurry pipes, connect the grouting head 5 to the drill hole, and perform grouting.

[0049] (5) Disassembly and cleaning: After the grouting is completed, the pipeline is disassembled and cleaned, especially the connecting bolts 7, sealing bearings 8, blades 9, brackets 11, etc. inside the passive stirring tube 12, to prevent the residual slurry from condensing and causing pipe blockage.

[0050] The device is improved on the basis of the existing mixed grouting pipe, does not need external power, fully utilizes the energy of high-speed flow of the grout in the grouting pipe, can fully stir the mixed grout, is simple in application, convenient in dismounting and cleaning and low in cost, is especially suitable for large-diameter grouting construction, can be widely applied to the construction of mixed grout grouting reinforcement in the geotechnical engineering such as a tunnel, a side slope and a foundation, and has good engineering application value.

[0051] Although several embodiments of the present application have been described in this document, it should be understood that many variations in form, function, and manner of implementation could be made by those skilled in the art without departing from the spirit of the application. The above embodiments are only exemplary, and the embodiments in this document should not be used as a limitation on the scope of the present application.

Claims

1. A passive stirring device for mixed slurry, characterized in that: The device comprises a liquid pipe A, a liquid pipe B, a mixing grouting pipe, a passive stirring pipe and a grouting head; The A liquid pipe and the B liquid pipe are connected to each other and then connected to one end of the mixing grouting pipe, and the other end of the mixing grouting pipe is connected to the passive stirring pipe and the grouting head in sequence; The passive stirring tube is provided with a paddle; A fixed slot and a bracket are provided in the passive stirring tube. The blade is mounted on a sealed bearing. The sealed bearing is mounted in the middle of the bracket. The bracket is mounted on the inner wall of the passive stirring tube through the fixed slot.

2. The passive stirring device for mixed slurry according to claim 1, characterized in that: The sealed bearing is mounted on the bracket via connecting bolts.

3. The passive stirring device for mixed slurry according to claim 1, characterized in that: The grouting head is provided with a diameter-changing section.

4. The passive stirring device for mixed slurry according to claim 1, characterized in that: The mixing grouting pipe is provided with a first internal thread at one end connected to the passive stirring pipe, and the passive stirring pipe is provided with a first external thread corresponding to the first internal thread. The mixing grouting pipe and the passive stirring pipe are connected to each other through the first internal thread and the first external thread.

5. The passive stirring device for mixed slurry according to claim 1, characterized in that: A second internal thread is provided at one end of the passive stirring tube connected to the mixing grouting tube, and a second external thread corresponding to the second internal thread is provided at the grouting head. The passive stirring tube and the grouting head are connected to each other through the second internal thread and the second external thread.

6. The passive stirring device for mixed slurry according to claim 1, characterized in that: The connection between the passive stirring pipe, the mixing grouting pipe and the grouting head is provided with a sealing gasket for anti-seepage.

7. The passive stirring device for mixed slurry according to claim 1, characterized in that: The A liquid pipe, the B liquid pipe, and the mixed grouting pipe are independently arranged or integrated.

8. The passive stirring device for mixed slurry according to claim 1, characterized in that: The blades are three-blade blades or four-blade blades.

9. The passive stirring device for mixed slurry according to claim 6, characterized in that: The sealing gasket is a rubber sealing ring.

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