Grouting exhaust device with prompt structure
By adding a prompt structure to the grouting exhaust structure of the prestressed pipeline and using the pressure mechanism of the sphere and spring to prompt the exhaust completion, the waste problem caused by excessive slurry discharge in the traditional method is solved, and a more efficient construction process is achieved.
Patent Information
- Application Number
- CN202422193759.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-09-09
AI Technical Summary
In the construction of prestressed pipelines, the traditional grouting exhaust structure cannot effectively indicate that the exhaust is completed, resulting in excessive slurry discharge, resulting in waste of materials and economic losses.
A grouting exhaust device with a prompt structure is designed. By connecting the prompt structure at the end of the air pipe, when the ball and the spring are subjected to the slurry pressure, the prompt rod extends out of the outlet, and the ball blocks the outlet, and the prompt rod prompts the exhaust to be completed.
The amount of slurry discharge is reduced, and the exhaust gas completion is given a prompt, which reduces material losses and improves construction efficiency.
Smart Images
Figure CN222976236U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of bridge engineering. Specifically, it relates to a grouting exhaust device with a prompting structure. Background Art
[0002] In the construction of pre-stressed beam segments, the pre-stressed project is the key to construction, and its quality directly determines the lifespan of the bridge and the safety during operation. To ensure the fullness and density of grouting in the pre-stressed duct, bellows exhaust holes are generally provided at the highest point of the pre-stressed duct.
[0003] Traditional pre-stressed duct grouting exhaust structures have some deficiencies. First, if the air in the pre-stressed duct cannot be completely discharged, air bags will be formed, affecting the density of the grout, and thus affecting the pre-stressed effect and the overall performance of the structure. Second, during the grouting process, if too much grout is discharged from the exhaust hole, it will not only cause waste of materials, but also may pollute the construction site, increasing the cleaning difficulty and cost.
[0004] As disclosed in the patent with the patent application number 2024204019951, a concrete pre-stressed duct grouting exhaust structure includes: a body part, a head provided on the body part, and an air pipe connected to the head; the body part fits externally to the pre-stressed duct in the axial direction of the pre-stressed duct. Align the head with the exhaust hole of the pre-stressed duct, fix the body part to fit on the outside of the pre-stressed duct 2, then inject cement grout into the pre-stressed duct. When injecting the cement grout, the compressed air in the pre-stressed duct is first discharged through the air pipe, and finally the cement grout is discharged. When qualified cement grout is discharged, block the slurry outlet of the upper pvc air pipe with a wooden plug to seal the slurry outlet, promoting the pressure maintenance and solidification of the cement grout in the pre-stressed duct. After the cement grout in the pre-stressed duct solidifies, cut off the exposed air pipe.
[0005] Although the structure of the above patent can solve the deficiencies of the traditional method to a certain extent, there are still some problems in the actual construction process. The main problem is that when the air in the pre-stressed duct is completely discharged, too much slurry is discharged and there is no timely prompt, resulting in material waste and economic losses. Summary of the Invention
[0006] The main purpose of this application is to provide a grouting exhaust device with a prompting structure to solve problems such as losses and waste caused by excessive discharge of slurry after the exhaust in the duct is completed.
[0007] To achieve the above purpose, according to one aspect of this application, a grouting exhaust device with a prompting structure is provided.
[0008] The grouting exhaust device with a prompting structure according to this application includes: an exhaust structure connected to the outside of the pre-stressed duct, and a prompting structure connected to the exhaust structure;
[0009] The exhaust structure includes: a body portion, a head portion provided on the body portion, and a trachea connected to the head portion; the body portion is axially aligned with the prestressed duct and fits against the outside of the prestressed duct.
[0010] The prompting structure includes: a hollow housing communicating with the trachea, a sphere movably connected within the hollow housing, a spring connected within the hollow housing and connected to the sphere, and a prompting rod connected to the outside of the sphere; the hollow housing has an inlet and an outlet, and the spring is on the outlet side of the hollow housing.
[0011] When the sphere and the spring are subjected to the pressure of the slurry and displace towards the outlet, the prompting rod extends out of the outlet.
[0012] Furthermore, the hollow housing includes: a cylindrical cavity with one end open, and a straight cylindrical connecting portion; the outside of the connecting portion has a thread, one end is screwed to the trachea, and one end is screwed to the cavity.
[0013] Furthermore, the inside of the outlet of the hollow housing has a thread for screwing a plug.
[0014] Furthermore, four ribs are evenly arranged in the circumferential direction within the cavity, and the ribs are tangent to the outside of the sphere.
[0015] Furthermore, the structure of the body portion is the same as the external structure of the prestressed duct.
[0016] Furthermore, a rubber pad is laid on the surface of the body portion that fits against the prestressed duct.
[0017] Furthermore, a connecting nozzle communicating with the head portion protrudes inside the body portion, and the connecting nozzle is inserted into the exhaust hole of the prestressed duct.
[0018] Furthermore, the body portion and the outside of the prestressed duct are fixed by winding with a layer of cable ties and a layer of tape.
[0019] In the embodiment of the present application, by adding a prompting structure, by connecting the prompting structure to the end of the trachea, when the sphere and the spring of the prompting structure are subjected to the pressure of the slurry and displace towards the outlet, the prompting rod extends out of the outlet, the sphere blocks the outlet, and the prompting rod extends out of the outlet for prompting, achieving the purpose of reducing the discharge of the slurry and at the same time giving a prompt for the completion of exhaust, thus realizing the technical effect of reducing the loss of the slurry, and further solving the problems of loss and waste caused by excessive discharge of the slurry after the exhaust in the pipeline is completed. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The drawings constituting a part of this application are used to provide a further understanding of this application, making other features, objectives, and advantages of this application more obvious. The schematic embodiments and descriptions of the drawings of this application are used to explain this application and do not constitute an improper limitation of this application. In the drawings:
[0021] Figure 1 is a schematic structural diagram of a grouting exhaust device with a prompting structure according to an embodiment of the present application;
[0022] Figure 2 is a schematic structural diagram of an exhaust structure according to an embodiment of the present application;
[0023] Figure 3 is a half-sectional perspective view of a prompting structure according to an embodiment of the present application;
[0024] Figure 4 is a sectional view of a prompting structure according to an embodiment of the present application.
[0025] Reference numerals
[0026] 1. Exhaust structure; 11. Body part; 12. Head part; 13. Air pipe; 14. Connecting nozzle; 2. Prompting structure; 21. Hollow shell; 211. Cavity; 212. Connecting part; 22. Sphere; 23. Spring; 24. Prompting rod; 25. Rib; 3. Plug; 4. Rubber pad. Detailed implementation manners
[0027] In order to enable those skilled in the art to better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.
[0028] It should be noted that the terms "first", "second", etc. in the description and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to implement the embodiments of the present application described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units does not necessarily need to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.
[0029] In this application, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present utility model and its embodiments, and are not intended to limit that the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation.
[0030] Moreover, in addition to being used to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present utility model can be understood according to specific circumstances.
[0031] In addition, the terms "mounted", "arranged", "provided with", "connected", "coupled", "socketed" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral structure; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, or there may be internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0032] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will refer to the drawings and combine with the embodiments to detail this application.
[0033] Such as Figures 1-4As shown in the figure, the present application relates to a grouting exhaust device with a prompting structure 2, including: an exhaust structure 1 connected to the outside of the prestressed duct, and a prompting structure 2 connected to the exhaust structure 1; the exhaust structure 1 includes: a body portion 11, a head portion 12 provided on the body portion 11, and an air pipe 13 connected to the head portion 12; the body portion 11 fits against the outside of the prestressed duct in the axial direction of the prestressed duct; the prompting structure 2 includes: a hollow housing 21 communicated with the air pipe 13, a sphere 22 movably connected in the hollow housing 21, a spring 23 connected in the hollow housing 21 and connected to the sphere 22, and a prompting rod 24 connected to the outside of the sphere 22; the hollow housing 21 has an inlet and an outlet, and the spring 23 is on the outlet side of the hollow housing 21; the head portion 12 is corresponding to the exhaust hole of the prestressed duct, the body portion 11 is fixedly attached to the outside of the prestressed duct, and then cement slurry is injected into the prestressed duct. When injecting the cement slurry, the air in the prestressed duct is first discharged through the air pipe 13. The air enters through the inlet of the hollow housing 21 and is discharged through the outlet; when the air is discharged, the slurry starts to flow outwards. When the sphere 22 and the spring 23 are subjected to the pressure of the slurry and displace towards the outlet, the sphere 22 blocks the outlet. At the same time, the prompting rod 24 extends out of the outlet for prompting. In the embodiment of the present application, by adding the prompting structure 2, by connecting the prompting structure 2 to the end of the air pipe 13, when the sphere 22 and the spring 23 of the prompting structure 2 are subjected to the pressure of the slurry and displace towards the outlet, the prompting rod 24 extends out of the outlet, the sphere 22 blocks the outlet, and the prompting rod 24 extends out of the outlet for prompting, achieving the purpose of reducing the discharge of the slurry and at the same time giving a prompt for the completion of exhaust, thereby realizing the technical effect of reducing the loss of the slurry, and further solving the problems of loss and waste caused by excessive discharge of the slurry after the exhaust in the pipe is completed.
[0034] In this embodiment, the hollow housing 21 includes: a cylindrical cavity 211 with one end open, and a straight cylindrical connecting portion 212; the outside of the connecting portion 212 has a thread, one end is screwed to the air pipe 13, and one end is screwed to the cavity 211. By providing a detachable hollow housing 21, it is convenient for later disassembly and cleaning, so as to facilitate the reuse of the prompting structure 2, improving the flexibility and service life of the equipment.
[0035] In this embodiment, the outlet of the hollow housing 21 has a thread for screwing a plug 3; when the staff finds that the prompting rod 24 extends out of the outlet, the plug 3 is screwed to the outlet to block the outlet and prevent the slurry from leaking outwards continuously, so as to promote the pressure maintaining and solidifying of the cement slurry in the prestressed duct. When the plug 3 is tightened inward, the prompting rod 24 is covered in the plug 3 and is pushed back into the hollow housing 21.
[0036] In this embodiment, four ribs 25 are evenly arranged in the cavity 211 in the circumferential direction, and the ribs 25 are tangent to the outside of the sphere 22. The sphere 22 can be limited by the ribs 25 to prevent the sphere 22 from shifting and ensure that the prompt rod 24 extends out of the outlet.
[0037] In this embodiment, a rubber pad 4 is laid on the surface of the body 11 that fits the prestressed duct to improve the sealing performance and effectively prevent leakage at the connection.
[0038] In this embodiment, the structure of the body 11 is the same as the external structure of the prestressed duct. Preferably, the body 11 is arc-shaped and has a corrugated structure. The arc shape and the corrugated structure are used to adapt to the external structure of the prestressed duct, ensure that it fits more closely to the outside of the prestressed duct, and can improve the sealing performance and stability of the connection.
[0039] In this embodiment, the body 11 and the outside of the prestressed duct are fixed by winding a layer of cable ties and a layer of tape. Specifically, the distance between the cable ties is 2 cm. In this embodiment, the body 11 is fixed to the outside of the prestressed duct by cable ties and tape, which not only improves the simplicity of device installation, ensures the sealing performance of the connection between the body 11 and the prestressed duct, but also does not damage the prestressed duct, ensures the stability of the connection, and extends the service life of the prestressed duct.
[0040] In this embodiment, the air pipe 13 is a PVC pipe, which is sleeved on the head 12, and the connection is sealed with foam glue. This design can ensure the sealing performance of the connection, prevent slurry leakage at the connection during the later grouting process, and further ensure the sealing performance of the device.
[0041] In this embodiment, a connecting nozzle 14 communicating with the head 12 protrudes from the inner side of the body 11, and the connecting nozzle 14 is inserted into the exhaust hole of the prestressed duct. The outer diameter of the connecting nozzle 14 is slightly larger than the inner diameter of the exhaust hole of the prestressed duct and is inserted into the exhaust hole with interference. The protruding dimension of the connecting nozzle 14 is slightly smaller than the wall thickness of the prestressed duct, so that when the device is in use, it can communicate with the exhaust hole correspondingly, meeting the guiding requirement and reducing the possibility of leakage at the connection.
[0042] The working principle of this device is as follows:
[0043] 1. Take an exhaust structure 1 of this embodiment;
[0044] 2. Take a PVC air pipe 13 with a length greater than the distance from the highest point of the prestressed duct to the concrete surface;
[0045] 3. Connect the prompt structure 2 to one end of the PVC air pipe 13;
[0046] 4. Locate the highest point of the concrete prestressed duct on-site, and install the grouting exhaust structure 1 and the concrete prestressed duct through the tie bundling technique, with a tie every 2 cm to ensure the close fit between the grouting exhaust structure 1 and the concrete prestressed duct; then wrap it with tape for secondary reinforcement to prevent some ties from being damaged during construction and also prevent slurry leakage during grouting.
[0047] 5. After the installation of the grouting exhaust structure 1 is completed, connect the other end of the PVC air pipe 13 to the head 12, and block the connection port with foam glue;
[0048] 6. After the steel strand passes through the prestressed duct and the prestressed tensioning is completed, grout the prestressed duct with cement slurry. When grouting the cement slurry, first discharge the compressed air in the prestressed duct through the air pipe 13, and finally discharge the cement slurry; when the sphere 22 and the spring 23 are under the pressure of the slurry and displace towards the outlet, the prompt rod 24 extends out of the outlet. When the staff finds that the prompt rod 24 extends out of the outlet, screw the plug 3 onto the outlet to block the outlet and prevent the slurry from leaking out continuously, so as to promote the pressure maintenance and solidification of the cement slurry in the prestressed duct. After the cement slurry in the prestressed duct solidifies, cut off the exposed air pipe 13.
[0049] From the above description, it can be seen that the present application achieves the following technical effects: In the embodiment of the present application, by adopting the method of adding a prompt structure, by connecting the prompt structure to the end of the air pipe, when the sphere and the spring of the prompt structure are under the pressure of the slurry and displace towards the outlet, the prompt rod extends out of the outlet, the sphere blocks the outlet, and the prompt rod extends out of the outlet for prompting, achieving the purpose of reducing the discharge of the slurry and at the same time giving a prompt for the completion of exhaust, thus achieving the technical effect of reducing the loss of the slurry, and further solving the problems of loss and waste caused by excessive discharge of the slurry after the exhaust in the pipe is completed.
[0050] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A grouting exhaust device with a prompting structure, characterized in that: include: An exhaust structure (1) connected to the outside of the prestressed pipe, and a prompting structure (2) connected to the exhaust structure (1); The exhaust structure (1) comprises: a body (11), a head (12) arranged on the body (11), and an air pipe (13) connected to the head (12); the body (11) is in contact with the outside of the prestressed pipe in the axial direction of the prestressed pipe; The prompt structure (2) comprises: a hollow shell (21) connected to the air pipe (13), a sphere (22) movably connected in the hollow shell (21), a spring (23) connected in the hollow shell (21) and connected to the sphere (22), and a prompt rod (24) connected to the outside of the sphere (22); the hollow shell (21) has an inlet and an outlet, and the spring (23) is on the outlet side of the hollow shell (21); When the ball (22) and the spring (23) are subjected to the pressure of the slurry and move toward the outlet, the prompt rod (24) extends out of the outlet.
2. A grouting exhaust device with a prompting structure according to claim 1, characterized in that: The hollow shell (21) comprises: a cylindrical cavity (211) with an opening at one end, and a straight cylindrical connecting portion (212); the connecting portion (212) has threads on the outside, one end of which is threadedly connected to the air pipe (13) and the other end of which is threadedly connected to the cavity (211).
3. The grouting exhaust device with a prompting structure according to claim 2 is characterized in that: The outlet of the hollow shell (21) is provided with a thread for threaded connection with the plug (3).
4. The grouting exhaust device with a prompting structure according to claim 2, characterized in that: Four ribs (25) are evenly arranged in the circumferential direction in the cavity (211), and the ribs (25) are tangent to the outside of the sphere (22).
5. The grouting exhaust device with a prompting structure according to claim 1, characterized in that: The structure of the body (11) is consistent with the external structure of the prestressed pipe.
6. The grouting exhaust device with a prompting structure according to claim 1, characterized in that: A rubber pad (4) is laid on the surface of the body (11) that contacts the prestressed pipe.
7. The grouting exhaust device with a prompting structure according to claim 1, characterized in that: A connection nozzle (14) connected to the head (12) protrudes from the inner side of the body (11), and the connection nozzle (14) is inserted into the exhaust hole of the prestressed pipe.
8. The grouting exhaust device with a prompting structure according to claim 1, characterized in that: The body (11) and the exterior of the prestressed pipe are fixed by wrapping together a layer of cable ties and a layer of adhesive tape.