Self-sealing type mud jacking pipe joint and mud jacking pipe

Abstract

The utility model relates to the field of building construction, in particular to a self-sealing type mud jacking pipe joint and a mud jacking pipe, the mud jacking pipe joint comprises a non-return component, the non-return component is internally connected to the inner wall of a cylinder body, the cylinder body is used for being connected with the mud jacking pipe, the non-return component is an elastic component, the non-return component comprises at least two cantilever components, and the cantilever components are connected with the non-return component. When the non-return component is in the initial state, the cantilever end of the non-return component can be far away from one side of the inner wall of the cylinder body so as to prevent liquid from flowing from the interior of the grouting pipe to the exterior of the grouting pipe through the non-return component, and when the non-return component is in the open state, the cantilever end of the non-return component can be close to one side of the inner wall of the cylinder body so as to prevent the liquid from flowing from the interior of the grouting pipe to the exterior of the grouting pipe. And therefore, liquid can flow from the outside of the grouting pipe to the inside of the grouting pipe through the non-return component. Through the arrangement, the speed of sealing the grouting pipe can be increased after grouting of the grouting pipe is completed, leakage of slurry is reduced, and the influence on the construction quality due to the fact that the grouting pipe cannot be blocked in time is reduced.

Description

Technical Field

[0001] The utility model relates to the field of building construction, in particular to a self-enclosed grouting pipe joint and a grouting pipe. Background Art

[0002] During the grouting construction process of prestressed pipes of bridge types such as simply supported beam bridges, continuous rigid frame bridges, and cast-in-place beam bridges, the slurry is injected into the grouting pipe through the grouting nozzle under the pressure of the pressure pump. When the grouting construction is completed and the grouting nozzle is pulled out, the construction workers are required to hammer a wooden plug or rubber plug into the grouting pipe with a hammer to prevent the slurry from overflowing from the grouting pipe.

[0003] Since it takes a certain amount of time to pull out the grouting nozzle and plug the grouting pipe, the grouting material in the grouting pipe leaks out during this period, which not only causes a waste of slurry, but also reduces the grouting volume, affecting the quality of the project. At the same time, traditional wooden plugs or rubber plugs are mostly processed on-site by construction workers, and the diameter of the wooden plug or rubber plug may not match the inner diameter of the grouting pipe, which leads to poor sealing and leakage of slurry. Utility Model Content

[0004] The purpose of the utility model is to overcome the problem in the prior art that when the grouting nozzle is pulled out after grouting is completed, the grouting pipe cannot be sealed in time and effectively, resulting in slurry waste and reduced grouting volume, affecting the quality of the project, and to provide a self-sealing grouting pipe joint and a grouting pipe.

[0005] The utility model provides a self-sealing grouting pipe joint, which includes a check component, which is connected to the inner wall of a cylinder, and the cylinder is used to connect a grouting pipe. The check component is an elastic component, and the check component includes at least two cantilever components. When the check component is in an initial state, the cantilever end of the check component can be away from one side of the inner wall of the cylinder, thereby blocking liquid from flowing from the inside of the grouting pipe to the outside of the grouting pipe through the check component. When the check component is in an open state, the cantilever end of the check component can be close to one side of the inner wall of the cylinder, thereby allowing liquid to flow from the outside of the grouting pipe to the inside of the grouting pipe through the check component.

[0006] By connecting the check component to the inner wall of the cylinder, the check component and the inner wall of the cylinder together form a more compact structure, thereby improving the sealing performance of the check component and reducing the risk of liquid leakage. At the same time, the built-in check component can reduce the interference of the external environment on the check component, which can not only improve the reliability of the normal operation of the check component, but also extend its service life; by connecting the cylinder to the grouting pipe, the check component can be connected to the grouting pipe through the cylinder, thereby improving the convenience of using the check component; by setting the check component as an elastic component, after the grouting is completed, the check component can automatically change from an open state to an initial state; the cantilever member is a structural member with one end connected to the inner wall of the cylinder and the other end extending to the center of the cylinder, and the end extending to the center of the cylinder is the cantilever end, and the cantilever end is a curved surface bent toward the center of the cylinder. When the check component is in the initial state, the cantilever member can cover the area of ​​the cross-section of the cylinder, so that the check component can block the liquid from flowing from the inside of the grouting pipe to the outside of the grouting pipe through the check component.

[0007] By means of this arrangement, the check component can, in the initial state, block the flow of liquid from the inside of the grouting pipe to the outside of the grouting pipe through the check component. The grouting component applies an external force to the check component to move the check component, so that the check component reaches an open state, and then grouting is performed in the grouting pipe. After the grouting is completed, the check component can automatically change from the open state to the initial state through its own elastic force, and through the push of the liquid pressure in the grouting pipe, it automatically forms a barrier in the grouting pipe to prevent the liquid from flowing from the inside of the grouting pipe to the outside of the grouting pipe through the check component. The greater the liquid pressure in the grouting pipe and the faster the flow rate, the shorter the time for the check component to form a barrier effect, so that the check component has a one-way flow-stopping effect of limiting the liquid to flow only from the outside of the grouting pipe to the inside of the grouting pipe, and shortens the time for blocking the grouting pipe after grouting is completed, reduces the leakage of slurry, and reduces the impact on the construction quality due to the failure to seal the grouting pipe in time.

[0008] The non-return component includes a first non-return component and a second non-return component, each of which includes at least two cantilever components. When the non-return component is in an initial state, the cantilever end of the first non-return component can overlap with the cantilever end of the second non-return component.

[0009] When the check component is in the initial state, the cantilever end of the first check component can be overlapped with the cantilever end of the second check component, or the cantilever end of the second check component can be overlapped with the cantilever end of the first check component. By making the cantilever end of the first check component and the cantilever end of the second check component overlap with each other when the check component reaches the initial state, the gap between the first check component and the second check component when the check component is in the initial state can be reduced, thereby improving the sealing of the check component.

[0010] Preferably, the cantilever end of the first check component includes a spherical portion with its center located on the axis of the cylinder and a radius of R1, which is an arc surface curved toward the center of the cylinder; the cantilever end of the second check component includes a spherical portion with its center located on the axis of the cylinder and a radius of R2, which is an arc surface curved toward the center of the cylinder.

[0011] By setting the shape of the cantilever end of the first check component and the shape of the cantilever end of the second check component to be curved surfaces, the turbulence or eddy current formed around the check component by the liquid can be reduced, thereby reducing the impact and wear of the liquid on the check component; at the same time, when the liquid flows from the grouting pipe through the check component to the outside of the grouting pipe, the curved surface design can more effectively guide the liquid to push the check component to reach the initial state, thereby improving the closing speed and accuracy; and the overlapping portion of the first check component and the second check component is a concentric arc surface, which can improve the stability of the check component.

[0012] Preferably, the difference between R1 and R2 is between 1 mm and 3 mm, and can be set to 2 mm.

[0013] Preferably, the first non-return component and the second non-return component are integrally formed.

[0014] Preferably, the non-return component is an elastic steel sheet.

[0015] Preferably, the non-return component may also be a rubber flap or an elastic plastic flap.

[0016] By setting the non-return component as an elastic steel sheet, the non-return component can reach the initial state more quickly through the force generated by its own elastic deformation when changing from the open state to the initial state, thereby improving the efficiency of the non-return component in blocking the grouting pipe.

[0017] The utility model also discloses a grouting pipe, which is provided with the self-sealing grouting pipe joint, which can improve the speed of closing the grouting pipe after grouting is completed, reduce the leakage of slurry, and reduce the impact on construction quality due to failure to timely seal the grouting pipe.

[0018] Preferably, a grouting pipe comprises a grouting component, wherein the grouting component is a grouting nozzle, and the grouting nozzle is a hollow rigid cylindrical component.

[0019] Preferably, the grouting component may also be a grouting pump, an injection nozzle, etc.

[0020] Preferably, the outer diameter of the grouting nozzle is smaller than the inner diameter of the cylinder.

[0021] By setting the outer diameter of the grouting nozzle, the grouting nozzle can be inserted into the cylinder for grouting operations, which reduces the possibility of liquid overflow during grouting operations and improves the convenience of construction.

[0022] Preferably, a spike portion is provided at one end of the grouting nozzle, and the inner angle of the spike portion is between 10° and 30°, preferably 20°.

[0023] By providing a spike portion at one end of the grouting nozzle and inserting the end provided with the spike portion into the cylinder, the grouting nozzle can be more conveniently inserted into the cylinder and grouting can be performed.

[0024] Preferably, the cylinder body can be connected to the grouting pipe in a detachable manner, or the cylinder body and the grouting pipe can be arranged as one body.

[0025] Compared with the prior art, the utility model has the following beneficial effects:

[0026] 1. The utility model provides a self-sealing grouting pipe joint, which can block the liquid from flowing from the inside of the grouting pipe to the outside of the grouting pipe through the check component when it is in the initial state. The grouting component applies an external force to the check component to move the check component, so that the check component reaches an open state, and then grouting is performed in the grouting pipe. After the grouting is completed, the check component can automatically change from the open state to the initial state through its own elastic force, and through the push of the liquid pressure in the grouting pipe, it automatically forms a barrier in the grouting pipe to prevent the liquid from flowing from the inside of the grouting pipe to the outside of the grouting pipe through the check component. The greater the liquid pressure in the grouting pipe and the faster the flow rate, the shorter the time for the check component to form a barrier effect, so that the check component has a one-way flow-stopping effect of limiting the liquid to flow only from the outside of the grouting pipe to the inside of the grouting pipe, and shortens the time for blocking the grouting pipe after grouting, reduces the leakage of slurry, and reduces the impact on the construction quality due to the failure to block the grouting pipe in time.

[0027] 2. The utility model also provides a grouting pipe. By setting a self-closing grouting pipe joint on the grouting pipe, the speed of closing the grouting pipe after grouting is completed can be increased, the leakage of slurry can be reduced, and the impact on the construction quality caused by the failure to seal the grouting pipe in time can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 2 This is the main schematic diagram of the self-sealing grouting pipe joint of Example 1 provided by the utility model.

[0029] Figure 1 This is a left schematic diagram of the self-sealing grouting pipe joint of Example 1 provided by the utility model.

[0030] Figure 3 This is a schematic cross-sectional view of the self-sealing grouting pipe joint of Example 1 provided by the utility model.

[0031] Figure 4 This is a three-dimensional schematic diagram of the self-sealing grouting pipe joint of Example 1 provided by the utility model.

[0032] Figure 5 This is the main schematic diagram of the grouting nozzle of Example 2 provided by the utility model for grouting into the grouting pipe through the self-sealing grouting pipe joint.

[0033] Markings in the figure:

[0034] 1- non-return component, 11- first non-return component, 12- second non-return component, 2- cylinder body, 3- grouting nozzle. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below in conjunction with specific embodiments. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0036] Unless otherwise specified, in the description of the specific embodiments of the present utility model, the expression terms indicating the orientation or position relationship such as "upper", "lower", "left", "right", "center", "inside", "outside", etc. are all based on the expression of the orientation or position relationship shown in the drawings, or the orientation or position relationship when the product / equipment / device of the utility model is usually used. These terms of orientation or position relationship are only for the convenience of describing the scheme of the utility model or simplifying the description in the specific embodiments, so that technicians can quickly understand the scheme, rather than indicating or implying that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation on the present utility model.

[0037] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simplified to mean that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the solution of the utility model.

[0038] In addition, the expressions “first”, “second”, “third”, etc., which appear in the terms, are merely used to distinguish the description of the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.

[0039] In addition, in the description of the embodiments of the present invention, "several", "multiple" and "a number" represent at least 2. It can be any number such as 2, 3, 4, 5, 6, 7, 8, 9, and even more than 9.

[0040] In addition, in the description of the technical solution of the utility model, unless otherwise clearly specified / defined / restricted, the terms "set", "install", "connect", "connected", "provided with", "laid", and "arranged" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, and can be welding, riveting, bolting, threading, and other commonly used connection means in the field. This connection can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal communication of two components.

[0041] Example 1

[0042] like Figure 1-4 As shown, a self-closed grouting pipe joint includes a check component 1, wherein the check component 1 is connected to the inner wall of a cylinder 2, and the cylinder 2 is used to connect a grouting pipe. The check component 1 is an elastic component, and the check component 1 includes at least two cantilever components. When the check component 1 is in an initial state, the cantilever end of the check component 1 can be away from one side of the inner wall of the cylinder 2, thereby blocking the liquid from flowing from the inside of the grouting pipe to the outside of the grouting pipe through the check component 1. When the check component 1 is in an open state, the cantilever end of the check component 1 can be close to one side of the inner wall of the cylinder 2, thereby allowing the liquid to flow from the outside of the grouting pipe to the inside of the grouting pipe through the check component 1.

[0043] By incorporating the non-return component 1 into the inner wall of the cylinder 2, the non-return component 1 and the inner wall of the cylinder 2 form a more compact structure, thereby improving the sealing performance of the non-return component 1 and reducing the risk of liquid leakage. At the same time, by internally connecting the non-return component 1, the interference of the external environment on the non-return component 1 can be reduced, which can not only improve the reliability of the normal operation of the non-return component 1, but also extend its service life; by connecting the cylinder 2 to the grouting pipe, the non-return component 1 can be connected to the grouting pipe through the cylinder 2, which improves the use efficiency of the non-return component 1. Convenience; by setting the non-return component 1 as an elastic component, after the grouting is completed, the non-return component 1 can automatically change from the open state to the initial state; the cantilever component is a structural component with one end connected to the inner wall of the cylinder 2 and the other end extending to the center of the cylinder 2, and the end extending to the center of the cylinder 2 is the cantilever end, and the cantilever end is a curved surface bent toward the center of the cylinder 2. When the non-return component 1 is in the initial state, the cantilever component can cover the area of ​​the cross-section of the cylinder 2, so that the non-return component 1 can block the liquid from flowing from the inside of the grouting pipe to the outside of the grouting pipe through the non-return component 1.

[0044] When in use, the grouting nozzle 3 is inserted into the grouting pipe, the grouting nozzle 3 contacts and applies external force to the non-return component 1, and the non-return component 1 moves away from the inner wall of the cylinder 2 toward the inner wall of the cylinder 2, so that the non-return component 1 reaches the open state, that is, the barrier formed by the non-return component 1 in the cylinder 2 is released, and the liquid can flow from the grouting nozzle 3 through the non-return component 1 from the outside of the grouting pipe to the inside of the grouting pipe;

[0045] After the grouting is completed, the check component 1 can change from the open state to the initial state through its own elastic force, and the check component 1 is pushed by the liquid pressure in the grouting pipe to form a barrier in the grouting pipe by itself, so as to prevent the liquid from flowing from the inside of the grouting pipe to the outside of the grouting pipe through the check component 1, and the greater the liquid pressure in the grouting pipe and the faster the flow rate, the shorter the time for the check component 1 to form a barrier effect, so that the check component 1 has a one-way flow-stopping effect that limits the liquid to flow from the outside of the grouting pipe to the inside of the grouting pipe, and shortens the time for blocking the grouting pipe after grouting is completed, reduces the leakage of slurry, and reduces the impact on the construction quality due to the failure to seal the grouting pipe in time.

[0046] Furthermore, the non-return component 1 is an elastic steel sheet.

[0047] Furthermore, those skilled in the art may also configure the non-return component 1 to be a rubber flap or an elastic plastic flap, etc.

[0048] By setting the non-return component 1 as an elastic steel sheet, when the non-return component 1 changes from the open state to the initial state, it can reach the initial state more quickly due to the force generated by its own elastic deformation, thereby improving the efficiency of the non-return component 1 in blocking the grouting pipe.

[0049] Furthermore, the cylinder 2 can be externally connected to the grouting pipe or internally connected to the grouting pipe.

[0050] Furthermore, the cylinder 2 can be connected to the grouting pipe in a screw connection manner. Of course, those skilled in the art can also set the connection method to other detachable connection methods such as snap connection.

[0051] Furthermore, the cylinder 2 can be connected to the grouting pipe by adhesive bonding. Of course, those skilled in the art can also set the connection method to other fixed connection methods such as connection through bolts and nuts, and setting the cylinder 2 and the grouting pipe as one.

[0052] Furthermore, the grouting nozzle 3 is a hollow rigid cylindrical component with a circular cross-section. Those skilled in the art may also configure the grouting nozzle 3 to be a hollow rigid cylindrical component with a rectangular or triangular cross-section.

[0053] Furthermore, those skilled in the art may also configure the grouting nozzle 3 to be other grouting equipment such as a grouting pump and an injection nozzle.

[0054] As attached Figure 4As shown, the non-return component 1 includes a first non-return component 11 and a second non-return component 12, the cantilever end of the first non-return component 11 includes a spherical portion with a center located at the axis of the cylinder 2 and a radius of R1, which is an arc surface bent toward the center of the cylinder 2, the cantilever end of the second non-return component 12 includes a spherical portion with a center located at the axis of the cylinder 2 and a radius of R2, and the difference between R1 and R2 is 2mm, when the non-return component 1 blocks the liquid from flowing from the inside of the grouting pipe to the outside of the grouting pipe through the non-return component 1, the cantilever end of the first non-return component 11 can overlap with the cantilever end of the second non-return component 12, the first non-return component 11 and the second non-return component 12 each include two cantilever components, attached Figure 4 It is a three-dimensional schematic diagram of the longitudinal section of the self-sealing grouting pipe joint. Figure 4 In the figure, only one cantilever component of the first non-return component 11 and the second non-return component 12 is shown respectively.

[0055] When the check component 1 blocks the liquid from flowing from the inside of the grouting pipe to the outside of the grouting pipe through the check component 1, that is, the check component 1 reaches the initial state, at this time, the cantilever end of the first check component 11 can be overlapped on the cantilever end of the second check component 12. By making the check component 1 reach the initial state, the first check component 11 can be overlapped with the second check component 12, which can reduce the gap between the first check component 11 and the second check component 12 when the check component 1 is in the initial state, thereby improving the sealing performance of the check component.

[0056] By setting the shape of the cantilever end of the first check component 11 and the shape of the cantilever end of the second check component 12 to be curved surfaces, the turbulence or eddy current formed by the liquid around the check component 1 can be reduced, thereby reducing the impact and wear of the liquid on the check component 1; at the same time, when the liquid flows from the grouting pipe through the check component 1 to the outside of the grouting pipe, the curved surface design can more effectively guide the liquid to push the check component 1 to reach the initial state, thereby improving the closing speed and accuracy; by setting R1 and R2 to be unequal, the overlapping portion of the first check component 11 and the second check component 12 is made a concentric arc surface, which can improve the stability of the check component.

[0057] Furthermore, the first non-return component 11 and the second non-return component 12 are both integrally formed.

[0058] Furthermore, those skilled in the art may also set the difference between R1 and R2 to 1 mm or 3 mm, etc.

[0059] Example 2

[0060] As attached Figure 5 As shown, this embodiment provides a grouting pipe, which is provided with the self-sealing grouting pipe joint.

[0061] Through this arrangement, the speed of closing the grouting pipe after grouting is completed can be increased, the leakage of slurry can be reduced, and the impact on construction quality caused by failure to seal the grouting pipe in time can be reduced.

[0062] The grouting pipe comprises a grouting nozzle 3, and the grouting nozzle 3 is a hollow rigid cylindrical component.

[0063] The outer diameter of the grouting nozzle 3 is smaller than the inner diameter of the cylinder.

[0064] By setting the outer diameter of the grouting nozzle 3, the grouting nozzle 3 can be inserted into the cylinder to perform grouting operations, thereby reducing the possibility of liquid overflow during the grouting operation and improving the convenience of construction.

[0065] Furthermore, one end of the grouting nozzle 3 is provided with a spike portion, and the inner angle of the spike portion is 20°.

[0066] Of course, those skilled in the art may also set the inner angle of the spike portion to 10°, 15° or 25°, etc.

[0067] By providing a spike portion at one end of the grouting nozzle 3 and inserting the end provided with the spike portion into the cylinder 2, the grouting nozzle 3 can be more conveniently inserted into the cylinder 2 and grouting.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-sealing grouting pipe joint, characterized in that: The invention comprises a check component (1), wherein the check component (1) is connected to the inner wall of a cylinder (2), and the cylinder (2) is used to connect a grouting pipe. The check component (1) is an elastic component, and the check component (1) comprises at least two cantilever components. When the check component (1) is in an initial state, the cantilever end of the check component (1) can be away from one side of the inner wall of the cylinder (2), thereby preventing liquid from flowing from the inside of the grouting pipe to the outside of the grouting pipe through the check component (1). When the check component (1) is in an open state, the cantilever end of the check component (1) can be close to one side of the inner wall of the cylinder (2), thereby allowing liquid to flow from the outside of the grouting pipe to the inside of the grouting pipe through the check component (1).

2. A self-sealing grouting pipe joint according to claim 1, characterized in that: The non-return component (1) comprises a first non-return component (11) and a second non-return component (12), wherein the first non-return component (11) and the second non-return component (12) each comprise at least two cantilever components, and when the non-return component (1) is in an initial state, the cantilever end of the first non-return component (11) can overlap with the cantilever end of the second non-return component (12).

3. A self-sealing grouting pipe joint according to claim 2, characterized in that: The cantilever end of the first non-return component (11) includes a spherical portion with a center located on the axis of the cylinder (2) and a radius of R1, which is curved toward the center of the cylinder (2); the cantilever end of the second non-return component (12) includes a spherical portion with a center located on the axis of the cylinder (2) and a radius of R2, which is curved toward the center of the cylinder (2).

4. A self-sealing grouting pipe joint according to claim 3, characterized in that: The difference between R1 and R2 is between 1 mm and 3 mm.

5. A self-sealing grouting pipe joint according to claim 4, characterized in that: The first non-return component (11) and the second non-return component (12) are both integrally formed.

6. A self-sealing grouting pipe joint according to claim 5, characterized in that: The non-return component (1) is an elastic steel sheet.

7. A grouting pipe, characterized in that: A self-sealing grouting pipe joint as described in any one of claims 1-6 is provided.

8. A grouting pipe according to claim 7, characterized in that: The grouting device comprises a grouting component, wherein the grouting component is a grouting nozzle (3), and the grouting nozzle (3) is a hollow rigid cylindrical component.

9. A grouting pipe according to claim 8, characterized in that: The outer diameter of the grouting nozzle (3) is smaller than the inner diameter of the cylinder (2).

10. A grouting pipe according to claim 9, characterized in that: One end of the grouting nozzle (3) is provided with a spike portion, and the inner angle of the spike portion is between 10° and 30°.

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