A two-component cement mortar spraying device
The dynamic mixing and stirring technology of the two-component cement mortar spraying device solves the shortcomings of traditional cement mortar in rapidly forming structural strength, and realizes rapid construction and high-quality spraying effect under different environmental conditions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINXING DUCTILE IRON PIPES CO LTD
- Filing Date
- 2025-03-31
- Publication Date
- 2026-05-29
AI Technical Summary
Traditional single-component cement mortar has shortcomings in rapidly forming structural strength, especially in low-temperature or high-humidity environments where the setting time is highly uncertain, leading to a longer construction cycle. When the spray thickness is too large, it is prone to drying shrinkage cracks and interlayer delamination problems. Existing equipment cannot achieve real-time proportioning control.
A two-component cement mortar spraying device is adopted, which dynamically mixes cement mortar and quick-setting agent in the feeding pipe by independently conveying them. The mixing mechanism ensures uniform mixing, and the adjustable nozzles achieve rapid solidification and uniform spraying.
It enables rapid formation of structural strength under different environmental conditions, avoids spray gun clogging and interlayer delamination, and improves construction efficiency and spraying quality.
Smart Images
Figure CN224300374U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of slurry spraying equipment, specifically to a two-component cement mortar spraying device. Background Technology
[0002] In municipal pipeline, building structure, and tunnel engineering, cement mortar is a common protective construction technique for coating substrate surfaces. Traditional single-component cement mortar relies on the material's own hydration reaction to achieve solidification and hardening, and its setting time typically takes several hours to tens of hours. In situations requiring rapid structural strength development, such as emergency pipeline sealing and tunnel leak repair, the construction cycle is forced to be extended, severely impacting the efficiency of emergency rescue operations. Especially in low-temperature or high-humidity environments during winter, the uncertainty of setting time further exacerbates the difficulty of construction organization.
[0003] Current processes require layered spraying to control material sagging. However, due to the slow setting characteristics of single-component materials, when a single spray thickness exceeds 5mm, the combined effect of surface shrinkage cracks and uncured underlayers can easily occur. When a second spray is applied, a weak interface can easily form between the new slurry and the incompletely cured underlayer, leading to quality problems such as interlayer delamination and decreased impermeability. Engineering test data shows that such interface defects can reduce the overall strength of the coating by more than 30%.
[0004] To address the need for controlled setting speed, engineering practice commonly employs improved solutions involving the addition of accelerators. However, under existing equipment systems, the accelerator needs to be manually pre-mixed with the substrate during the stirring stage. This static mixing method has significant drawbacks: on the one hand, it is impossible to adjust the ratio in real time according to variables such as ambient temperature and humidity, and spray thickness; excessive addition can easily cause premature setting in the delivery pipeline, leading to spray gun blockage and pipeline failure; on the other hand, when the amount of accelerator added is insufficient, it is difficult to achieve the early strength indicators required by the design. Utility Model Content
[0005] In view of this, the present invention provides a two-component cement mortar spraying device. The present invention can enable the sprayed liquid material to solidify quickly by adding a quick-setting agent to the cement mortar feeding pipe, thereby enabling the pipe to be constructed in the next step quickly, which indirectly increases the pipe processing efficiency.
[0006] To solve the above-mentioned technical problems, this utility model provides a two-component cement mortar spraying device, including a mortar pipeline connected to a mortar storage tank for conveying cement mortar, and a first regulating valve for controlling the flow rate of the liquid material on the mortar pipeline.
[0007] The auxiliary material pipeline is connected to the accelerator storage tank for transporting the accelerator, and a second regulating valve is also provided on the auxiliary material pipeline to control the flow rate of the liquid.
[0008] The mixing pipeline is connected to the mortar pipeline and the auxiliary material pipeline. Cement mortar and quick-setting agent can be transported into the mixing pipeline and then diverted for transport. During the diversion and transport process, they are mixed. In other words, the cement mortar can be mixed with the quick-setting agent during the transport process, thereby preventing the liquid material from solidifying in the pipeline.
[0009] The nozzle, which is fixedly installed at the end of the mixing pipe, is used to spray the mixed liquid material.
[0010] The mixing pipe is equipped with a stirring mechanism to mix cement mortar and quick-setting agent. The stirring mechanism can make the cement mortar and quick-setting agent mix more evenly.
[0011] The mixing pipeline includes a first feeding pipe connected to the mortar pipeline, a second feeding pipe connected to the auxiliary material pipeline, and a third feeding pipe connected to the nozzle. The mixing mechanism is located inside the second feeding pipe. The second feeding pipe is detachably fixed between the first feeding pipe and the third feeding pipe, so that the second feeding pipe can be disassembled for maintenance.
[0012] The two ends of the second feeding pipe are fixed between the first and third feeding pipes by flange or clamp connection, which facilitates quick disassembly of the second feeding pipe.
[0013] The third feed tube is also equipped with an air inlet corresponding to the nozzle. Compressed air is input into the third feed tube through the air inlet. The size of the atomized particles of the sprayed material can be adjusted by the compressed air, and the spraying distance can also be adjusted.
[0014] The nozzle is adjustable, allowing for adjustment of the spray angle and spray range of the liquid.
[0015] By independently transporting cement mortar and quick-setting agent through dual pipelines, dynamic mixing is achieved within the mixing pipeline, thus avoiding the risk of uncontrolled proportions caused by manual premixing. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of a two-component cement mortar spraying device according to the present invention;
[0017] Figure 2 This utility model Figure 1 A schematic diagram of the structure at point A in the middle.
[0018] Explanation of reference numerals in the attached figures:
[0019] 100. Mortar pipe; 101. Mortar storage tank; 102. First regulating valve;
[0020] 200. Auxiliary material pipeline; 201. Accelerating agent storage tank; 202. Second regulating valve;
[0021] 300. Mixing pipe; 301. First feeding pipe; 302. Second feeding pipe; 303. Third feeding pipe; 304. Mixing mechanism;
[0022] 400, Nozzle; 401, Air Inlet. Detailed Implementation
[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the appendices of the embodiments of this utility model. Figure 1-2 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.
[0024] This embodiment provides a two-component cement mortar spraying device, such as... Figure 1 , 2 As shown: It includes a mortar storage tank 101, a mortar pipe 100 connected to the mortar storage tank 101, and a mixing pipe 300 connected to the mortar storage tank 101. The mixing pipe 300 is also equipped with a nozzle at its end, so that the cement mortar in the mortar storage tank 101 can enter the mortar pipe 100 and then be sprayed outward through the mixing pipe 300 and the nozzle. At the same time, the mortar pipe 100 is also equipped with a first regulating valve 102, which can regulate the flow rate of cement mortar in the mortar pipe 100, thereby indirectly controlling the output of cement mortar.
[0025] Furthermore, it also includes a quick-setting agent storage tank 201, which is connected to an auxiliary material pipeline 200. The end of the auxiliary material pipeline 200 is connected to a mixing pipeline 300, meaning that the quick-setting agent in the quick-setting agent storage tank 201 can enter the auxiliary material pipeline 200 and then enter the mixing pipeline 300 to mix with the cement mortar. In this way, the spray nozzle can quickly solidify the mixed liquid after spraying it out. At the same time, the auxiliary material pipeline 200 is also equipped with a second regulating valve 202, which can regulate the flow rate of the quick-setting agent in the auxiliary material pipeline 200. Thus, by using the first regulating valve 102 and the second regulating valve 202 to mix the quick-setting agent and cement mortar, the liquid can be prevented from solidifying in the pipeline and the sprayed liquid can be quickly solidified.
[0026] It is worth mentioning that the mixing pipe 300 is also equipped with a stirring mechanism 304, which can stir the quick-setting agent and cement mortar in the mixing pipe 300, so that they are mixed more evenly.
[0027] Specifically, the mixing pipe 300 is composed of three sections: a first feeding pipe 301, a second feeding pipe 302, and a third feeding pipe 303, as shown below. Figure 2 As shown: The first feeding pipe 301 is connected to the mortar pipe 100 at its end, the third feeding pipe 303 is connected to the spray nozzle, the second feeding pipe 302 is detachably fixed between the first feeding pipe 301 and the third feeding pipe 303, the auxiliary material pipe 200 is connected to the second feeding pipe 302 at its end, and the mixing mechanism 304 is fixed inside the second feeding pipe 302. That is, after the mixing pipe 300 has been used for a certain period of time, a certain degree of blockage will occur inside the mixing pipe 300. The second feeding pipe 302 can be removed for cleaning and maintenance, thereby ensuring that the equipment can perform normal spraying processing on the pipe.
[0028] The two ends of the second feeding pipe 302 can be connected to the first feeding pipe 301 and the third feeding pipe 303 via flanges, thereby enabling quick disassembly of the second feeding pipe 302 and increasing its maintenance efficiency. Similarly, the two ends of the second feeding pipe 302 can also be connected to the first feeding pipe 301 and the third feeding pipe 303 via clamp structures, achieving the same goal of quick disassembly.
[0029] Furthermore, the third feed pipe 303 is also provided with an air inlet 401 corresponding to the nozzle 400. The air inlet 401 is connected to an external air supply mechanism. The external air supply mechanism can deliver compressed air to the nozzle at the end of the third feed pipe 303. By adjusting the compressed air intake, not only can the size of the sprayed liquid particles be adjusted, but also the spraying distance can be adjusted.
[0030] Nozzle 400 is an adjustable nozzle 400, which can adjust the spray angle and spray range of the liquid.
[0031] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0032] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.
Claims
1. A two-component cement mortar spraying device, characterized in that: include; A mortar pipe (100) is connected to a mortar storage tank (101) for transporting cement mortar, and the mortar pipe (100) is also provided with a first regulating valve (102) for controlling the flow rate of liquid material. An auxiliary material pipeline (200) is connected to a accelerator storage tank (201) for transporting the accelerator, and the auxiliary material pipeline (200) is also provided with a second regulating valve (202) for controlling the flow rate of the liquid material; The mixing pipe (300) is connected to the mortar pipe (100) and the auxiliary material pipe (200). Cement mortar and quick-setting agent can be transported into the mixing pipe (300) for diversion and are mixed during the diversion process. The nozzle (400) is fixedly installed at the end of the mixing pipe (300) and is used to spray the mixed liquid.
2. The two-component cement mortar spraying device as described in claim 1, characterized in that: The mixing pipe (300) is equipped with a stirring mechanism (304) for mixing cement mortar and quick-setting agent.
3. The two-component cement mortar spraying device as described in claim 2, characterized in that: The mixing pipe (300) includes a first feeding pipe (301) connected to the mortar pipe (100), a second feeding pipe (302) connected to the auxiliary material pipe (200), and a third feeding pipe (303) connected to the nozzle (400). The mixing mechanism (304) is disposed in the second feeding pipe (302), and the second feeding pipe (302) is detachably fixed between the first feeding pipe (301) and the third feeding pipe (303).
4. The two-component cement mortar spraying device as described in claim 3, characterized in that: The two ends of the second feeding pipe (302) are fixed between the first feeding pipe (301) and the third feeding pipe (303) by flange connection or clamp connection.
5. The two-component cement mortar spraying device as described in claim 3, characterized in that: The third feeding pipe (303) is also provided with an air inlet (401) corresponding to the nozzle (400), through which compressed air is input into the third feeding pipe (303).
6. The two-component cement mortar spraying device as described in claim 1, characterized in that: The nozzle (400) is an adjustable nozzle (400), which can adjust the spray angle and spray range of the liquid.