A single inclined backflow prevention valve grouting sleeve combined device

Abstract

The application provides a single-inclined anti-backflow valve grouting sleeve combined device, and belongs to the field of precast concrete members. The device solves the problem of incomplete grouting and affected connection strength caused by the easy backflow of grouting material in the internal grouting sleeve. The device comprises a grouting sleeve, a reinforcing bar and a single-inclined anti-backflow valve. The single-inclined anti-backflow valve comprises a fixed base, a single-inclined disc, an upper shaft and a lower shaft. The fixed base is a circular ring structure. The upper shaft and the lower shaft are both arc structures and are fixed inside the fixed base. The upper shaft and the lower shaft are oppositely arranged and have a space overlap. A gap is arranged between the upper shaft and the lower shaft for the single-inclined disc to pass through and move. The single-inclined disc is a disc structure with a cylindrical groove in the center, which is recessed towards the direction of the grouting inlet. The single-inclined disc passes through the gap between the upper shaft and the lower shaft. Two upper limiting shafts limit the upward turning angle of the single-inclined disc. Two lower limiting shafts limit the downward turning angle of the single-inclined disc. The application effectively promotes complete grouting.

Description

Technical Field

[0001] The invention belongs to the field of precast concrete components, and in particular relates to a single-slant anti-backflow valve grouting sleeve assembly device. Background Art

[0002] With the rapid development of my country's economy and urbanization, prefabricated construction has been rapidly promoted and used in China in recent years. Using grouting sleeves to connect steel bars is currently the most common connection method between prefabricated components and has been widely used.

[0003] The fullness of the grouting in the connecting sleeve directly determines the strength of the rebar connection, which in turn affects the structural strength of the entire building. However, currently, due to issues such as substandard grouting material quality, rebar that cannot enter the sleeve due to installation deviations and is cut, insufficient anchoring strength, and the lack of grouting or slurry backflow at the sleeve outlet, grouting defects within the grouting sleeve can affect the fullness and density of the rebar sleeve grouting, reducing the load-bearing capacity and deformation capacity of precast concrete structural components and failing to meet the requirements of specifications and regulations.

[0004] Therefore, by improving the design of the internal structure of the grouting sleeve to deal with these problems, especially the currently more common grouting backflow problem, the grouting will be fuller, the connection strength of the steel bars will be improved, and the structural strength of the entire building will be improved to serve the project. Summary of the Invention

[0005] In view of this, the present invention aims to propose a single-slant anti-backflow valve grouting sleeve assembly device to solve the problem that the grouting material inside the existing grouting sleeve is easy to flow back, resulting in incomplete grouting and affecting the connection strength.

[0006] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0007] A single-slant anti-backflow valve grouting sleeve assembly device includes a grouting sleeve, steel bars, and a single-slant anti-backflow valve. A grouting outlet and a grouting inlet are respectively provided on the upper and lower side surfaces of the grouting sleeve. The steel bars include upper and lower steel bars. The upper and lower steel bars are respectively embedded in the grouting sleeve at the upper and lower ends. Grouting material is poured into the grouting sleeve to anchor the upper and lower steel bars. A gap exists between the upper and lower steel bars. The single-slant anti-backflow valve is disposed between the upper and lower steel bars and connected to the interior of the grouting sleeve.

[0008] The single-slant anti-backflow valve includes a fixed base, a single-slant disk, an upper shaft and a lower shaft, the fixed base is a circular ring structure, the upper shaft and the lower shaft are both arc-like structures and are both fixed to the inside of the fixed base, the upper shaft and the lower shaft are arranged in opposite directions and there is spatial overlap, and a gap is provided between the upper shaft and the lower shaft for the single-slant disk to pass through and move, the upper shaft includes an upper shaft body and two upper limiting shafts, the two upper limiting shafts are symmetrically arranged on both sides of the upper shaft body, one end of the two upper limiting shafts is connected to the two ends of the upper shaft body, and the other ends of the two upper limiting shafts are fixed to the inner wall of the fixed base, the lower shaft includes a lower shaft body and two lower limiting shafts, the two lower limiting shafts are symmetrically arranged on both sides of the lower shaft body, one end of the two lower limiting shafts is connected to the two ends of the lower shaft body, and the other ends of the two lower limiting shafts are fixed to the inner wall of the fixed base, and the distance between the two lower limiting shafts and the connecting end of the fixed base is less than the inner diameter of the fixed base;

[0009] The single inclined disk is a disk structure with a cylindrical groove in the center that is recessed toward the slurry inlet. The single inclined disk penetrates into the gap between the upper shaft and the lower shaft, and the upper limiting shaft fits inside the cylindrical groove, and the lower limiting shaft is sleeved on the outer surface of the cylindrical groove. The outer diameter of the single inclined disk is adapted to the inner diameter of the fixed base. The two upper limiting shafts limit the upward flipping angle of the single inclined disk, and the two lower limiting shafts limit the downward flipping angle of the single inclined disk.

[0010] Furthermore, the distance between the upper limiting axis and the lower limiting axis is four times the thickness of the single slant plate.

[0011] Furthermore, the diameter of the cylindrical groove of the single slant plate is 2 / 3 of the inner diameter of the fixed base.

[0012] Furthermore, the upper shaft body is a sunken arc-shaped shaft, and the arc-shaped shaft is adapted to the arc shape of the cylindrical groove.

[0013] Furthermore, the pulp outlet and pulp inlet are both arranged to protrude outward.

[0014] Furthermore, the centers of the pulp outlet and the pulp inlet are on the same vertical line.

[0015] Furthermore, the upper steel bars and the lower steel bars are arranged on the same vertical axis.

[0016] Furthermore, the diameters and materials of the upper and lower steel bars are the same.

[0017] Furthermore, the length of the upper steel bar and the lower steel bar embedded in the grouting sleeve is not less than 8 times the nominal diameter of the steel bar.

[0018] Further, the grouting sleeve is integrated with the grout outlet and the grout inlet; the upper shaft and the lower shaft are integrated with the fixed base.

[0019] Compared with the prior art, the single-inclined anti-backflow valve grouting sleeve combination device has the following beneficial effects:

[0020] 1. The single-inclined anti-backflow valve can prevent the backflow of grouting liquid by opening and closing, thereby reducing the grouting defects in the grouting sleeve and improving the strength of the assembled structural member; the structure and use mode are simple and easy to realize engineering application, and the applicability of the grouting anti-backflow improvement is improved; the principle is simple, and the internal structure of the grouting sleeve can be reasonably adjusted according to the actual engineering construction condition to realize the improvement of more practical engineering requirements.

[0021] 2. The device occupies small space and has little influence on the overall structure of the grouting sleeve; the rotation of the single-inclined disc is realized by ingenious constraint to make the grout flow in one direction, and the opening flow is large, and the grouting process will not be affected by excessive resistance. DETAILED DESCRIPTION

[0022] The accompanying drawings, which form a part of the present application, are used to provide further understanding of the present application, and the illustrative embodiments of the present application and their descriptions are used to explain the present application, and do not constitute improper limitations on the present application. In the drawings:

[0023] Figure 1 The cross-sectional view of the single-inclined anti-backflow valve grouting sleeve combination device according to the embodiment of the present application;

[0024] Figure 2 The structure schematic view of the single-inclined anti-backflow valve grouting sleeve combination device according to the embodiment of the present application;

[0025] Figure 3 The connection top view of the fixed base and the upper shaft and the lower shaft;

[0026] Figure 4 The connection bottom view of the fixed base and the upper shaft and the lower shaft;

[0027] Figure 5 The top view of the single-inclined disc;

[0028] Figure 6 The cross-sectional structure schematic view of the single-inclined disc;

[0029] Figure 7 The top view of the single-inclined anti-backflow valve in the closed state;

[0030] Figure 8 The bottom view of the single-inclined anti-backflow valve in the closed state;

[0031] Figure 9 This is a schematic diagram of the cross-sectional structure of a single-slant anti-backflow valve in a closed state;

[0032] Figure 10 This is a schematic diagram of the three-dimensional structure of a single-slant anti-backflow valve in an open state;

[0033] Figure 11 This is a schematic diagram of the cross-sectional structure of a single-slant anti-backflow valve in the open state.

[0034] Description of reference numerals:

[0035] 1. Grouting sleeve; 11. Grout inlet; 12. Grout outlet; 2. Steel bars; 21. Upper steel bars; 22. Lower steel bars; 3. Single-slant backflow prevention valve; 31. Fixed base; 32. Single-slant disc; 33. Cylindrical groove; 34. Upper limit shaft; 35. Upper shaft body; 36. Lower limit shaft; 37. Lower shaft body. DETAILED DESCRIPTION

[0036] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely explain the technical solutions in the embodiments of the present invention. It should be noted that the embodiments of the present invention and the features therein can be combined with each other in the absence of conflict, and the embodiments described are only part of the embodiments of the present invention, not all of the embodiments.

[0037] like Figures 1-11 As shown, a single-slant anti-backflow valve grouting sleeve assembly device includes a grouting sleeve 1, a steel bar 2 and a single-slant anti-backflow valve 3. A grouting outlet 12 and a grouting inlet 11 are respectively provided on the upper and lower side surfaces of the grouting sleeve 1. The steel bar 2 includes an upper steel bar 21 and a lower steel bar 22. The upper steel bar 21 and the lower steel bar 22 are respectively embedded in the upper and lower ends of the grouting sleeve 1, and the upper steel bar 21 and the lower steel bar 22 are anchored and connected by pouring grouting material into the grouting sleeve 1. There is a gap between the upper steel bar 21 and the lower steel bar 22. The single-slant anti-backflow valve 3 is arranged between the upper steel bar 21 and the lower steel bar 22 and is connected to the inside of the grouting sleeve 1.

[0038] The single-slant anti-backflow valve 3 includes a fixed base 31, a single inclined disk 32, an upper shaft and a lower shaft. The fixed base 31 is a circular ring structure. The upper shaft and the lower shaft are both arc-like structures and are fixed inside the fixed base 31. The upper shaft and the lower shaft are arranged in opposite directions and there is spatial overlap. A gap is provided between the upper shaft and the lower shaft for the single inclined disk 32 to pass through and move. The upper shaft includes an upper shaft body 35 and two upper limiting shafts 34. The two upper limiting shafts 34 are symmetrically arranged on both sides of the upper shaft body 35. One end of the two upper limiting shafts 34 is aligned with the two ends of the upper shaft body 35. The ends are connected, the other ends of the two upper limiting shafts 34 are fixed to the inner wall of the fixed base 31, and the lower shaft includes a lower shaft body 37 and two lower limiting shafts 36. The two lower limiting shafts 36 are symmetrically arranged on both sides of the lower shaft body 37, one end of the two lower limiting shafts 36 is connected to the two ends of the lower shaft body 37, and the other ends of the two lower limiting shafts 36 are fixed to the inner wall of the fixed base 31. The distance between the connection ends of the two lower limiting shafts 36 and the fixed base 31 is less than the inner diameter of the fixed base 31. This arrangement prevents the single slant plate 31 from falling off between the upper and lower shafts and provides a displacement constraint along the axial direction of the sleeve;

[0039] The single inclined disk 32 is a disk structure with a cylindrical groove 33 in the center that is recessed toward the slurry inlet 11. The single inclined disk 32 penetrates into the gap between the upper shaft and the lower shaft, and the upper limiting shaft 34 fits inside the cylindrical groove 33, and the lower limiting shaft 36 is sleeved on the outer surface of the cylindrical groove 33. The outer diameter of the single inclined disk 32 is adapted to the inner diameter of the fixed base 31. The two upper limiting shafts 34 limit the upward flipping angle of the single inclined disk 32, and the two lower limiting shafts 36 limit the downward flipping angle of the single inclined disk 32.

[0040] The distance between the upper limiting shaft 34 and the lower limiting shaft 36 is four times the thickness of the single slant plate 32 so that the single slant plate can be opened to the maximum extent.

[0041] The diameter of the cylindrical groove 33 of the single inclined plate 32 is 2 / 3 of the inner diameter of the fixed base 31. Such a configuration can ensure a one-way flow and enable the single inclined plate to rotate around the upper and lower axes.

[0042] The upper shaft body 35 is a sunken arc-shaped shaft, and the arc-shaped shaft is adapted to the arc shape of the cylindrical groove 33 .

[0043] The slurry outlet 12 and the slurry inlet 11 are both protruding outward; the centers of the slurry outlet 12 and the slurry inlet 11 are on the same vertical line; the upper steel bars 21 and the lower steel bars 22 are arranged on the same vertical axis; the diameters and materials of the upper steel bars 21 and the lower steel bars 22 are the same; the length of the upper steel bars 21 and the lower steel bars 22 embedded in the grouting sleeve 1 is not less than 8 times the nominal diameter of the steel bar 2; such an arrangement meets actual engineering needs and facilitates grouting.

[0044] The grouting sleeve 1, the slurry outlet 12 and the slurry inlet 11 are an integrated structure; the upper shaft, the lower shaft and the fixed base 31 are an integrated structure.

[0045] This embodiment is a test method for a single-slant anti-backflow valve grouting sleeve assembly device, and the specific steps are as follows:

[0046] Step 1: Connect the device. Before the test, connect the grouting sleeve 1 and the single-slant anti-backflow valve 3, and connect the upper steel bar 21 and the lower steel bar 22 into the grouting sleeve 1 respectively;

[0047] Step 2, grouting test: Grouting is performed from the grout inlet 11 into the grouting sleeve 1. When the slurry passes through the single-slant anti-backflow valve 3, the single-slant disc 32 is pushed to rotate open about the rotation center formed by the upper shaft 35 and the lower shaft 37, allowing the slurry to pass through. When the slurry movement direction is reversed, the single-slant disc 32 rotates downward under the drive of the backflow slurry, stops rotating under the constraints of the upper limit shaft 4 and the lower limit shaft 36, and resumes closing, thereby preventing the slurry from flowing back.

[0048] Step 3: After the test is completed, disassemble the device.

[0049] The embodiments of the present invention disclosed above are intended only to illustrate the present invention. The embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Numerous modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention.

Claims

1. A single-slant anti-backflow valve grouting sleeve assembly device, characterized by: The invention comprises a grouting sleeve (1), a steel bar (2) and a single-slant anti-backflow valve (3), wherein a grouting outlet (12) and a grouting inlet (11) are respectively provided on the upper and lower side surfaces of the grouting sleeve (1), the steel bar (2) comprises an upper steel bar (21) and a lower steel bar (22), the upper steel bar (21) and the lower steel bar (22) are respectively embedded in the upper and lower ends of the grouting sleeve (1), and the upper steel bar (21) and the lower steel bar (22) are anchored and connected by pouring grouting material into the grouting sleeve (1), a gap exists between the upper steel bar (21) and the lower steel bar (22), and the single-slant anti-backflow valve (3) is provided between the upper steel bar (21) and the lower steel bar (22) and is connected to the inside of the grouting sleeve (1); The single-slant anti-backflow valve (3) includes a fixed base (31), a single-slant disc (32), an upper shaft and a lower shaft. The fixed base (31) is a circular ring structure. The upper shaft and the lower shaft are both arc-like structures and are fixed inside the fixed base (31). The upper shaft and the lower shaft are arranged in opposite directions and have spatial overlap. A gap is provided between the upper shaft and the lower shaft for the single-slant disc (32) to pass through and move. The upper shaft includes an upper shaft body (35) and two upper limiting shafts (34). The two upper limiting shafts (34) are symmetrically arranged on both sides of the upper shaft body (35). The two upper limiting shafts (34) are symmetrically arranged on both sides of the upper shaft body (35). 4) is connected to both ends of the upper shaft body (35), the other ends of the two upper limiting shafts (34) are fixed on the inner wall of the fixed base (31), the lower shaft includes a lower shaft body (37) and two lower limiting shafts (36), the two lower limiting shafts (36) are symmetrically arranged on both sides of the lower shaft body (37), one end of the two lower limiting shafts (36) is connected to both ends of the lower shaft body (37), the other ends of the two lower limiting shafts (36) are fixed on the inner wall of the fixed base (31), and the distance between the connection ends of the two lower limiting shafts (36) and the fixed base (31) is less than the inner diameter of the fixed base (31); The single inclined disk (32) is a disk structure with a cylindrical groove (33) in the center thereof, which is recessed toward the pulp inlet (11). The single inclined disk (32) is inserted into the gap between the upper shaft and the lower shaft, and the upper limiting shaft (34) is fitted inside the cylindrical groove (33), and the lower limiting shaft (36) is sleeved on the outer surface of the cylindrical groove (33). The outer diameter of the single inclined disk (32) is adapted to the inner diameter of the fixed base (31). The two upper limiting shafts (34) limit the upward turning angle of the single inclined disk (32), and the two lower limiting shafts (36) limit the downward turning angle of the single inclined disk (32). The upper shaft body (35) is a sunken arc-shaped shaft, and the arc-shaped shaft is adapted to the arc shape of the cylindrical groove (33); The pulp outlet (12) and the pulp inlet (11) are both arranged to protrude outwards.

2. The single-slant anti-backflow valve grouting sleeve assembly according to claim 1 is characterized in that: The distance between the upper limiting shaft (34) and the lower limiting shaft (36) is four times the thickness of the single slant plate (32).

3. The single-slant anti-backflow valve grouting sleeve assembly according to claim 1, characterized in that: The diameter of the cylindrical groove (33) of the single inclined plate (32) is 2 / 3 of the inner diameter of the fixed base (31).

4. The single-slant anti-backflow valve grouting sleeve assembly according to claim 1, characterized in that: The centers of the pulp outlet (12) and the pulp inlet (11) are on the same vertical line.

5. The single-slant anti-backflow valve grouting sleeve assembly according to claim 1 is characterized in that: The upper steel bar (21) and the lower steel bar (22) are arranged on the same vertical axis.

6. The single-slant anti-backflow valve grouting sleeve assembly according to claim 1, characterized in that: The diameters and materials of the upper steel bars (21) and the lower steel bars (22) are the same.

7. The single-slant anti-backflow valve grouting sleeve assembly according to claim 1, characterized in that: The length of the upper steel bar (21) and the lower steel bar (22) embedded in the grouting sleeve (1) is not less than 8 times the nominal diameter of the steel bar (2).

8. A single-slant anti-backflow valve grouting sleeve assembly according to any one of claims 1 to 7, characterized in that: The grouting sleeve (1), the slurry outlet (12) and the slurry inlet (11) are an integrated structure; the upper shaft, the lower shaft and the fixed base (31) are an integrated structure.

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