Bubble-proof multi-stage exhaust fin structure for vertical structure pouring

Abstract

This invention relates to the technical field of anti-bubble multi-stage venting sheet structure for vertical structure casting, specifically an anti-bubble multi-stage venting sheet structure for vertical structure casting, comprising: a venting sheet body, with multiple sets of vertical main venting channels penetrating the venting sheet body at its rear end, and multiple sets of inclined secondary venting channels at its front end, the secondary venting channels communicating with the main venting channels, a filter screen provided at the front opening of the secondary venting channels, and a through groove provided inside the filter screen in the secondary venting channels; the beneficial effect is that, in actual use, the anti-bubble multi-stage venting sheet structure for vertical structure casting proposed by this invention allows the venting sheet body to be spliced ​​and connected to the corresponding T-shaped slots opened inside the casting template via a T-shaped locking block in the middle of the rear end, enabling repeated installation and disassembly for use, reducing usage costs.

Description

Technical Field

[0001] This invention relates to the technical field of anti-bubble multi-stage venting sheet structure for vertical structure casting, specifically an anti-bubble multi-stage venting sheet structure for vertical structure casting. Background Technology

[0002] In building construction, municipal engineering, and transportation projects, vertical structures such as shear walls, columns, and cylindrical tubes are typically constructed using on-site cast-in-place concrete. Because the formwork cavities for these components are very tall (single-layer drop height often exceeds 3m, and even reaches over 5m in high-rise construction), the concrete mixture experiences high kinetic energy and rapid flow during its descent, making it highly susceptible to air entrapment and the formation of air bubbles. Furthermore, to meet pumping and self-compacting requirements, modern concrete generally exhibits high fluidity and low yield stress, making it difficult for air bubbles to rise and dissipate under their own weight once formed.

[0003] Currently, there are two main types of bubble control measures commonly used in the industry: Formwork opening for venting: φ10mm~φ20mm round holes are set on the top or side wall of the formwork, allowing bubbles to rise naturally and escape. This method has a small venting area and a single path, only able to vent bubbles directly connected to the opening. As the pouring height increases, the opening is quickly blocked by the grout, and the venting efficiency drops sharply. Insertion vibrator: High-frequency vibration causes bubbles to detach from the aggregate surface and float upwards. However, the vibration radius is only 0.3m~0.5m. For thin-walled components with a wall thickness ≤200mm, dense reinforcement, or built-in steel sections, it is difficult to insert the vibrator properly. Excessive vibration can easily cause segregation and bleeding, forming new surface defects. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-stage air venting structure for preventing air bubbles in vertical structure casting, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an exhaust plate body, with multiple sets of vertical main exhaust channels penetrating the exhaust plate body at the rear end, and multiple sets of inclined secondary exhaust channels at the front end of the exhaust plate body, the secondary exhaust channels communicating with the main exhaust channels, a filter screen provided at the front opening of the secondary exhaust channels, and a through groove provided inside the filter screen in the secondary exhaust channels; a T-shaped slot, the T-shaped slot being provided inside the casting template.

[0006] Preferably, a T-shaped locking block is provided at the middle of the rear end of the exhaust plate body. The T-shaped locking block is adapted to the size of the T-shaped slot opened on the inner side of the casting template. The T-shaped locking block can be inserted into the T-shaped slot to connect the casting template and the exhaust plate body.

[0007] Preferably, a connecting slot is provided at the top of the front end of the exhaust plate body, and a connecting protrusion is provided at the bottom of the front end of the exhaust plate body. The connecting protrusion at the bottom of one set of exhaust plate bodies can be inserted into the connecting slot at the top of another set of exhaust plate bodies to splice the two sets of exhaust plate bodies together.

[0008] Preferably, the exhaust plate body has expansion grooves on both sides of its rear end, and multiple sets of springs are provided in the expansion grooves. The inner side of the spring is connected to the inner wall of the expansion groove, and the outer side of the spring is connected to the sealing gasket. The sealing gasket can be tightly attached to the inner wall surface of the casting template by the elastic force of the spring.

[0009] Preferably, the top of the sealing gasket is provided with a sealing gasket connecting groove, and the bottom of the sealing gasket is provided with a sealing gasket connecting protrusion. The sealing gasket connecting protrusion at the bottom of one set of exhaust plate bodies can be inserted into the sealing gasket connecting groove at the top of another set of sealing gaskets to connect the sealing gaskets provided on both sides of the two sets of exhaust plate bodies.

[0010] Preferably, the diameter of the secondary exhaust channel decreases from the outside to the inside, the inner side of the secondary exhaust channel is connected to the main exhaust channel opened at the rear end of the exhaust plate body, and the exhaust plate body is opened into a diffuse radial accumulation groove at the outer opening of the secondary exhaust channel.

[0011] Preferably, the through groove in the secondary exhaust channel is provided at the outer opening of the secondary exhaust channel, and the through groove is provided in the middle of the high-frequency oscillator, and the through groove can generate vibration.

[0012] Preferably, a one-way valve is held at the bottom end of the main exhaust channel. The one-way valve blocks the bottom opening of the main exhaust channel and allows the slurry that has seeped into the main exhaust channel to be discharged from the bottom of the main exhaust channel.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] This invention proposes a multi-stage venting structure for preventing air bubbles during vertical structure casting. In actual use, the venting sheet body is connected to the T-shaped slot corresponding to the inner side of the casting template via a T-shaped locking block at the middle of the rear end. It can be repeatedly installed and disassembled, reducing usage costs. When the venting sheet body is installed inside the casting template, the sealing gaskets in the expansion grooves on both sides of the rear end of the venting sheet body are fully pressed against the inner wall surface of the casting template by the tension of the spring, sealing the joint between the casting template and the venting sheet body and preventing grout from seeping between the casting template and the T-shaped slot. When the length of a single venting sheet body is less than the required casting height, the two sets of venting sheet bodies are connected by inserting the connecting protrusion at the bottom of one set of venting sheet bodies into the connecting slot at the top of another set of venting sheet bodies. Furthermore, when the connecting protrusion at the bottom of one set of venting sheet bodies is inserted into the connecting slot at the top of another set of venting sheet bodies, the sealing gasket connecting protrusions at the bottom of the sealing gaskets on both sides of one set of venting sheet bodies are inserted into the sealing gasket connecting grooves at the top of the sealing gaskets on both sides of the other set of venting sheet bodies, connecting the sealing gaskets on both sides of the two sets of venting sheet bodies.

[0015] During grouting, air bubbles in the grout gather at the outer opening of the secondary venting channel along the diffusing filter. The filter at the opening of the secondary venting channel begins to block the grout, while air bubbles pass through the filter and enter the secondary venting channel. They then pass through the groove in the middle of the high-frequency vibrator and flow from the inner opening of the secondary venting channel into the main venting channel, and finally exit from the top opening of the main venting channel. Furthermore, during grouting, the high-frequency vibrator in the secondary venting channel is activated, generating vibration. This high-frequency vibration causes air bubbles to detach from the grout, further reducing the air bubble rate in the grout. Additionally, at the bottom of the main venting channel, located at the rear end of the bottom venting plate, a one-way valve is engaged. This one-way valve opens only in one direction, allowing a small amount of grout that has seeped into the secondary venting channel to exit through the one-way valve into the main venting channel. It also seals the bottom opening of the main venting channel, preventing grout from seeping into it. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the sealing expansion groove of the exhaust plate body of the present invention;

[0018] Figure 3 for Figure 2 Enlarged structural diagram of point A in the middle;

[0019] Figure 4 This is a three-dimensional structural diagram of the exhaust plate of the present invention;

[0020] Figure 5 for Figure 4 Enlarged structural diagram of section B in the middle;

[0021] Figure 6 This is a schematic diagram of the cross-sectional structure of the exhaust channel of the exhaust plate body of the present invention;

[0022] Figure 7 for Figure 6 Enlarged structural diagram of the structure at point C.

[0023] In the diagram: 1. Casting template; 2. T-shaped slot; 3. Exhaust plate body; 4. T-shaped block; 5. Connecting slot; 6. Connecting protrusion; 7. Expansion groove; 8. Spring; 9. Sealing gasket; 10. Sealing gasket connecting groove; 11. Sealing gasket connecting protrusion; 12. Main exhaust channel; 13. Secondary exhaust channel; 14. Filter screen; 15. Radial aggregation groove; 16. High-frequency vibrator; 17. Through groove; 18. One-way valve. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see Figures 1 to 7 The present invention provides a technical solution: an exhaust plate body 3, with multiple sets of vertical main exhaust channels 12 penetrating the exhaust plate body 3 at its rear end, and multiple sets of inclined secondary exhaust channels 13 at its front end, the secondary exhaust channels 13 communicating with the main exhaust channels 12, a filter screen 14 provided at the front opening of the secondary exhaust channel 13, and a through groove 17 provided inside the filter screen 14 in the secondary exhaust channel 13; a T-shaped slot 2, the T-shaped slot 2 being provided inside the casting template 1; air bubbles passing through the filter screen 14 enter the secondary exhaust channel 13, and are discharged into the main exhaust channel 12 from the inner opening of the secondary exhaust channel 13 through the through groove 17 in the middle of the high-frequency vibrator 16.

[0026] A T-shaped locking block 4 is provided at the middle of the rear end of the exhaust plate body 3. The T-shaped locking block 4 is adapted to the size of the T-shaped slot 2 opened on the inner side of the casting template 1. The T-shaped locking block 4 can be inserted into the T-shaped slot 2 to connect the casting template 1 and the exhaust plate body 3. A connecting slot 5 is opened at the top of the front end of the exhaust plate body 3, and a connecting protrusion 6 is provided at the bottom of the front end of the exhaust plate body 3. The connecting protrusion 6 at the bottom of one set of exhaust plate bodies 3 can be inserted into the connecting slot 5 opened at the top of another set of exhaust plate bodies 3 to splice the two sets of exhaust plate bodies 3. The exhaust plate body 3 is spliced ​​and connected to the T-shaped slot 2 opened on the inner side of the casting template 1 through the T-shaped locking block 4 at the middle of the rear end. It can be repeatedly installed, disassembled and used to reduce the cost of use.

[0027] The exhaust plate body 3 has telescopic grooves 7 on both sides of its rear end. Multiple sets of springs 8 are installed in the telescopic grooves 7. The inner side of the springs 8 is connected to the inner wall of the telescopic groove 7, and the outer side of the springs 8 is connected to the sealing gaskets 9. The sealing gaskets 9 can be tightly attached to the inner wall surface of the casting template 1 by the elastic force of the springs 8. The top of the sealing gaskets 9 has a sealing gasket connecting groove 10, and the bottom of the sealing gaskets 9 has a sealing gasket connecting protrusion 11. The sealing gasket connecting protrusion 11 at the bottom of one set of exhaust plate body 3 can be inserted into the sealing gasket connecting groove 10 at the top of another set of sealing gaskets 9 to connect the sealing gaskets 9 on both sides of the two sets of exhaust plate body 3. The sealing gasket connecting protrusion 11 at the bottom of the sealing gaskets 9 on both sides of one set of exhaust plate body 3 can be inserted into the sealing gasket connecting groove 10 at the top of the sealing gaskets 9 on both sides of another set of exhaust plate body 3 to connect the sealing gaskets 9 on both sides of the two sets of exhaust plate body 3.

[0028] The diameter of the secondary exhaust channel 13 decreases from the outside to the inside. The inner side of the secondary exhaust channel 13 is connected to the main exhaust channel 12 opened at the rear end of the exhaust plate body 3. The exhaust plate body 3 has a diffuse radial accumulation groove 15 opened at the outer opening of the secondary exhaust channel 13. The through groove 17 in the secondary exhaust channel 13 is set at the outer opening of the secondary exhaust channel 13. The high-frequency vibrator 16 has a through groove 17 in the middle, and the through groove 17 can generate vibration. The bottom end of the main exhaust channel 12 is held by a one-way valve 18. The one-way valve 18 blocks the bottom opening of the main exhaust channel 12 and allows the slurry that seeps into the main exhaust channel 12 to be discharged from the bottom of the main exhaust channel 12. The one-way valve 18 only opens in one direction, which allows a small amount of slurry that seeps into the secondary exhaust channel 13 to be discharged from the main exhaust channel 12 through the one-way valve 18, and blocks the bottom opening of the main exhaust channel 12 to prevent the slurry from seeping into the main exhaust channel 12.

[0029] In actual use, the exhaust plate body 3 is connected to the T-shaped slot 2 corresponding to the inner side of the casting template 1 via the T-shaped locking block 4 at the middle of the rear end. It can be repeatedly installed and disassembled for use, reducing usage costs. When the exhaust plate body 3 is installed inside the casting template 1, the sealing gaskets 9 in the expansion grooves 7 on both sides of the rear end of the exhaust plate body 3 are fully and tightly attached to the inner wall surface of the casting template 1 by the tension of the spring 8, sealing the joint between the casting template 1 and the exhaust plate body 3 and preventing slurry from seeping between the casting template 1 and the T-shaped slot 2. When the exhaust plate body is used alone... When the length of 3 is less than the required pouring height, the two sets of exhaust plate bodies 3 are connected by inserting the connecting protrusion 6 at the bottom of one set of exhaust plate bodies 3 into the connecting slot 5 at the top of another set of exhaust plate bodies 3. Furthermore, when the connecting protrusion 6 at the bottom of one set of exhaust plate bodies 3 is inserted into the connecting slot 5 at the top of another set, the sealing gasket connecting protrusion 11 at the bottom of the sealing gasket 9 on both sides of one set of exhaust plate bodies 3 is inserted into the sealing gasket connecting groove 10 at the top of the sealing gasket 9 on both sides of another set of exhaust plate bodies 3, thus connecting the sealing gaskets 9 on both sides of the two sets of exhaust plate bodies 3.

[0030] During grouting, air bubbles in the grout gather at the outer opening of the secondary exhaust channel 13 along the diffusing radial aggregation groove 15. The filter screen 14 at the opening of the secondary exhaust channel 13 begins to block the grout. At the same time, the air bubbles pass through the filter screen 14 and enter the secondary exhaust channel 13. They are discharged from the inner opening of the secondary exhaust channel 13 into the main exhaust channel 12 through the through groove 17 in the middle of the high-frequency vibrator 16, and then discharged from the top opening of the main exhaust channel 12. Furthermore, during grouting, the high-frequency vibrator 16 in the secondary exhaust channel 13 is activated to generate vibration. The high-frequency vibration causes the air bubbles to detach from the grout, further reducing the air bubble rate in the grout. Furthermore, at the bottom of the main exhaust channel 12, which is located at the rear end of the exhaust plate body 3 at the bottom, a one-way valve 18 is held in place. The one-way valve 18 only opens in one direction, allowing a small amount of grout that has seeped into the secondary exhaust channel 13 to be discharged from the main exhaust channel 12 through the one-way valve 18. It also seals the bottom opening of the main exhaust channel 12 to prevent grout from seeping into the main exhaust channel 12.

[0031] Although the illustrative specific embodiments of this application have been described above to enable those skilled in the art to understand this application, this application is not limited to the scope of the specific embodiments. For those skilled in the art, all applications utilizing the concept of this application are protected as long as various variations are within the spirit and scope of this application as defined and determined by the appended claims.

Claims

1. A multi-stage air-venting structure for preventing air bubbles during vertical structural casting, characterized in that: include: The exhaust plate body (3) has multiple sets of vertical main exhaust channels (12) that penetrate the exhaust plate body (3) at its rear end, and multiple sets of inclined secondary exhaust channels (13) that communicate with the main exhaust channels (12) at its front end. A filter screen (14) is provided at the front opening of the secondary exhaust channel (13), and a through groove (17) is provided inside the filter screen (14) in the secondary exhaust channel (13). T-shaped slot (2), the T-shaped slot (2) is opened on the inside of the casting template (1); The exhaust plate body (3) has a T-shaped card block (4) at the middle of its rear end. The T-shaped card block (4) is adapted to the size of the T-shaped slot (2) opened on the inner side of the casting template (1). The T-shaped card block (4) can be inserted into the T-shaped slot (2) to connect the casting template (1) and the exhaust plate body (3). The diameter of the secondary exhaust channel (13) decreases from the outside to the inside. The inner side of the secondary exhaust channel (13) is connected to the main exhaust channel (12) opened at the rear end of the exhaust plate body (3). The exhaust plate body (3) is opened into a diffuse radial accumulation groove (15) at the outer opening of the secondary exhaust channel (13).

2. The bubble-proof multi-stage venting fin structure for vertical structure pouring according to claim 1, characterized in that: The exhaust plate body (3) has a connecting slot (5) at the top of its front end and a connecting protrusion (6) at the bottom of its front end. The connecting protrusion (6) at the bottom of one set of exhaust plate bodies (3) can be inserted into the connecting slot (5) at the top of another set of exhaust plate bodies (3) to splice the two sets of exhaust plate bodies (3).

3. The bubble-proof multi-stage venting fin structure for vertical structure pouring according to claim 2, characterized in that: The exhaust plate body (3) has expansion grooves (7) on both sides of its rear end. Multiple springs (8) are provided in the expansion grooves (7). The inner side of the springs (8) is connected to the inner wall of the expansion grooves (7), and the outer side of the springs (8) is connected to the sealing gaskets (9). The sealing gaskets (9) can be tightly attached to the inner wall surface of the casting template (1) by the elastic force of the springs (8).

4. The bubble-proof multi-stage venting fin structure for vertical structure pouring according to claim 3, characterized in that: The top of the sealing gasket (9) is provided with a sealing gasket connection groove (10), and the bottom of the sealing gasket (9) is provided with a sealing gasket connection protrusion (11). The sealing gasket connection protrusion (11) at the bottom of one set of exhaust plate bodies (3) can be inserted into the sealing gasket connection groove (10) at the top of another set of sealing gaskets (9) to connect the sealing gaskets (9) on both sides of the two sets of exhaust plate bodies (3).

5. A multi-stage air-venting structure for preventing air bubbles in vertical structural casting according to claim 4, characterized in that: The through groove (17) in the secondary exhaust channel (13) is provided at the outer opening of the secondary exhaust channel (13), and the through groove (17) is provided in the middle of the high frequency vibrator (16), and the through groove (17) can generate vibration.

6. The bubble-proof multi-stage venting fin structure for vertical structure pouring according to claim 5, characterized in that: The bottom end of the main exhaust channel (12) is held by a one-way valve (18), which blocks the bottom opening of the main exhaust channel (12) and allows the slurry that seeps into the main exhaust channel (12) to be discharged from the bottom of the main exhaust channel (12).

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