A coated sand chlorine detection device
The chlorine detection device for coated sand, which combines a stirring shaft and an exhaust fan, solves the problem of incomplete chlorine detection, achieves efficient chlorine detection and solution cleaning, and ensures the safety and reliability of the coated sand.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG RUILE EQUIP MFG CO LTD
- Filing Date
- 2025-07-24
- Publication Date
- 2026-07-14
AI Technical Summary
During the production of coated sand, chlorine gas may be mixed in the sand and difficult to detect completely, posing a safety hazard. Furthermore, residual detection solution can contaminate subsequent samples.
The system employs a combination of a stirring shaft, an air inlet pipe, an exhaust fan, and a detection chamber. Chlorine gas is introduced into the FeCl2 solution for detection through stirring and exhaust. Subsequently, a water pump and nozzle cleaning device are used to ensure that no solution residue remains.
This improves the efficiency and accuracy of chlorine detection, avoids chlorine residue and solution contamination, and ensures the effectiveness of subsequent tests.
Smart Images
Figure CN224500400U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of coated sand production technology, specifically a chlorine detection device for coated sand. Background Technology
[0002] Coated sand is a type of molding sand or core sand with a solid resin film covering the surface of sand grains. It mainly consists of refractory materials, binders, curing agents, lubricants, and special additives. This material offers numerous advantages during the casting process, such as high strength, low gas evolution, rapid curing speed, easy collapsibility, high temperature resistance, deformation resistance, anti-sticking, and anti-shelling. During the production of coated sand, chemical treatments may be employed to improve its performance or meet specific requirements. These treatments may include the use of chlorine-containing compounds or reactants. After production, chlorine gas needs to be absorbed and its content tested to ensure safety during storage, transportation, and use.
[0003] Currently, when chlorine is tested along with coated sand, it is impossible to know whether the chlorine has been completely removed because the chlorine may be mixed in with the sand. This means that residual chlorine may reappear during transportation and use due to shaking, affecting safety. Furthermore, some of the chlorine testing solution may remain in the container after being replaced, contaminating subsequent tests and gradually reducing the effectiveness of the test. Utility Model Content
[0004] The purpose of this application is to provide a chlorine detection device for coated sand, which solves the problems mentioned in the background art, such as chlorine being mixed in the sand, making it impossible to know whether the chlorine has been completely removed during detection, which may cause residual chlorine to reappear during transportation and use due to shaking, affecting safety issues, and the chlorine detection solution leaving some residue in the container after replacement, causing contamination of subsequent materials and gradually reducing the detection effect.
[0005] To achieve the above objectives, this application provides the following technical solution: a chlorine detection device for coated sand, comprising a sample tank, a connecting pipe, a water pumping pipe, and a filter screen. A stirring shaft is rotatably connected to the center of the bottom of the sample tank. One end of an air inlet pipe is connected to the upper side wall of the sample tank. The other end of the air inlet pipe passes through the top of the detection chamber and is located below the inner side of the detection chamber. An exhaust fan is fixedly connected to the inner side of the end of the air inlet pipe closest to the sample tank. The tops of both the sample tank and the absorption chamber are connected to the water pumping pipe, and a nozzle is fixedly connected to the bottom of the water pumping pipe.
[0006] In this technical solution, after the servo motor starts, it drives the stirring shaft and the vertical rod on the stirring shaft to rotate, thereby agitating and turning the sample. Then, the exhaust fan draws the generated chlorine gas into the detection chamber. The FeCl2 solution in the detection chamber turns yellow when it comes into contact with chlorine gas, indicating that the sample contains oxygen and requires further dechlorination of the coated sand, thus improving the detection efficiency. After the water pipe is connected to an external water source, the external water pump draws clean water along the water pipe to the nozzle and sprays it out to rinse the detection chamber and absorption chamber, thereby avoiding residual solution contamination of the subsequently added solution and ensuring the effectiveness of subsequent detection and absorption.
[0007] As an optional solution to the technical solution of this application, both the detection box and the absorption box have a discharge port with a valve on the lower side wall, and both the detection box and the absorption box have a feeding port on the top.
[0008] As an optional solution to the technical solution of this application, the side wall of the testing box is provided with an observation window.
[0009] As an optional solution to the technical solution of this application, a servo motor is fixedly connected to the inner side of the sample tank directly below the stirring shaft, and the outer end of the drive shaft of the servo motor is fixedly connected to the stirring shaft above.
[0010] As an optional solution to the technical solution of this application, the two ends of the connecting pipe pass through the top of the detection box and the absorption box respectively and are located inside the two. The end of the connecting pipe located inside the absorption box is located on the lower inner side of the absorption box. Two parallel filter screens are connected to the upper inner side of the absorption box, and the area between the filter screens is filled with activated carbon.
[0011] As an optional solution to the technical solution of this application, the other end of the water pumping pipe at the top of the detection box and the absorption box is connected to the water inlet pipe.
[0012] Compared with the prior art, the beneficial effects of this application are as follows:
[0013] 1. This application facilitates the detection of chlorine gas through a stirring shaft, air inlet pipe, exhaust fan, and detection chamber. After the servo motor is started, it drives the stirring shaft and the vertical rod on the stirring shaft to rotate, thereby agitating and turning the sample. Then, the exhaust fan draws the generated chlorine gas into the detection chamber. The FeCl2 solution in the detection chamber turns yellow when it comes into contact with chlorine gas, indicating that the sample contains oxygen and requires further dechlorination of the coated sand. This avoids the problem of chlorine gas residue in the sand being difficult to detect, thereby improving the detection efficiency.
[0014] 2. This application uses a water pipe and nozzle to clean the residual solution. After the water pipe is connected to an external water source, the external water pump draws clean water along the water pipe to the nozzle and then sprays it out to rinse the detection box and absorption box, thereby avoiding residual solution contamination of the subsequently added solution and ensuring the effectiveness of subsequent detection and absorption. Attached Figure Description
[0015] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:
[0016] Figure 1 This is an overall view of a chlorine detection device for coated sand according to this application;
[0017] Figure 2 This is a schematic cross-sectional view of the sample tank and detection chamber of a chlorine detection device for coated sand according to this application;
[0018] Figure 3 This is a schematic cross-sectional view of the detection chamber and absorption chamber of a chlorine gas detection device for coated sand according to this application.
[0019] In the diagram: 1. Sample tank; 2. Sealed top cover; 3. Servo motor; 4. Stirring shaft; 5. Air inlet pipe; 6. Exhaust fan; 7. Detection chamber; 701. Observation window; 8. Connecting pipe; 9. Absorption chamber; 10. Filter screen; 11. Activated carbon; 12. Feed port; 13. Water pump pipe; 131. Water inlet pipe; 14. Nozzle; 15. Discharge port; 16. Air outlet. Detailed Implementation
[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description will further elaborate on them in conjunction with specific embodiments.
[0021] A chlorine gas detection device for coated sand, see [link / reference] Figures 1 to 3 The system includes a sample tank 1, a connecting pipe 8, a water pumping pipe 13, and a filter screen 10. A stirring shaft 4 is rotatably connected to the center of the bottom of the sample tank 1. One end of the air inlet pipe 5 is connected to the upper side wall of the sample tank 1. The other end of the air inlet pipe 5 passes through the top of the detection chamber 7 and is located on the lower inner side of the detection chamber 7. An exhaust fan 6 is fixedly connected to the inner side of the end of the air inlet pipe 5 near the sample tank 1. The stirring of the stirring shaft 4 and the exhaust of the exhaust fan 6 force out the chlorine gas and pour it into the detection chamber 7, avoiding the problem of chlorine gas residue in the sand being difficult to detect and improving the detection efficiency. The tops of the sample tank 1 and the absorption chamber 9 are both connected to the water pumping pipe 13. The bottom of the water pumping pipe 13 is fixedly connected to the nozzle 14. After the water pumping pipe 13 is connected to an external water source, the external water pump draws clean water along the water pumping pipe 13 to the nozzle 14 and then sprays it out to rinse the detection chamber 7 and the absorption chamber 9, thereby avoiding residual solution contamination of the subsequently added solution.
[0022] It is worth noting that, for example Figure 1 and Figure 3 As shown, the two ends of the connecting pipe 8 pass through the top of the detection box 7 and the absorption box 9 respectively and are located inside the two. The end of the connecting pipe 8 located inside the absorption box 9 is located on the lower inner side of the absorption box 9. Two parallel filter screens 10 are connected to the upper inner side of the absorption box 9, and the area between the filter screens 10 is filled with activated carbon 11. The activated carbon 11 can provide a layer of protection to prevent chlorine from leaking out due to the lime water failing to completely absorb the chlorine.
[0023] Specifically, such as Figure 1 As shown, both the detection box 7 and the absorption box 9 have a discharge port 15 with a valve on the lower side wall, and both the detection box 7 and the absorption box 9 have a feeding port 12 on the top. The feeding port 12 is equipped with a cover, which can be opened during filling and closed after filling to prevent air leakage.
[0024] It is worth noting that, such as Figure 1 As shown, the side wall of the detection chamber 7 is provided with an observation window 701. Through the observation window 701, it is possible to observe whether the detection solution inside the detection chamber 7 changes color, thereby determining whether the sample contains chlorine gas.
[0025] It is worth noting that, such as Figure 2 As shown, a servo motor 3 is fixedly connected to the inner side of the sample tank 1 directly below the stirring shaft 4. The outer end of the drive shaft of the servo motor 3 is fixedly connected to the stirring shaft 4 above. After the servo motor 3 is started, it will drive the stirring shaft 4 to rotate, stir the sample, and let the chlorine gas leak out, which will facilitate subsequent detection.
[0026] It is worth noting that, such as Figure 3 As shown, an outlet 16 is provided on the upper side wall of the absorption box 9. The opening of the outlet 16 is also covered. Its main function is to discharge the clean and safe gas after absorbing chlorine and ensure the gas pressure balance.
[0027] It is worth noting that, such as Figure 1 As shown, the other end of the water pumping pipe 13 at the top of the detection box 7 and the absorption box 9 is connected to the water inlet pipe 131. The water inlet pipe 131 is equipped with an external interface, so that water can be supplied to the water pumping pipes 13 on both sides at the same time after connecting to an external water source, thereby reducing the use of pipes and water pumps.
[0028] In practical use, the coated sand sample is poured into sample tank 1, and then the sealing top cover 2 is closed. The chlorine gas is easily detected via the stirring shaft 4, air inlet pipe 5, exhaust fan 6, and detection chamber 7. After the servo motor 3 starts, it drives the stirring shaft 4 and the vertical rod on the stirring shaft 4 to rotate, thus agitating and turning the sample. The exhaust fan 6 then draws the generated chlorine gas into the detection chamber 7. The FeCl2 solution in the detection chamber 7 turns yellow upon contact with chlorine gas, indicating the presence of oxygen in the sample. Further dechlorination of the coated sand is necessary, thus avoiding the problem of undetectable chlorine residue in the sand and improving detection efficiency. After detection… Chlorine gas enters the absorption tank 9 through the connecting pipe 8 and is absorbed by the lime water in the absorption tank 9. It is then adsorbed by the activated carbon 11 between the two layers of filter screen 10, thus completing the absorption of chlorine gas. After detection and absorption are completed, the valve of the outlet 15 is opened to drain the detection solution and absorption solution. The residual solution can be cleaned through the water pump pipe 13 and the nozzle 14. After the water pump pipe 13 is connected to an external water source, the external water pump draws clean water through the water pump pipe 13 to the nozzle 14 and sprays it out to rinse the detection tank 7 and the absorption tank 9, thereby avoiding residual solution contamination of the newly added solution and ensuring the effectiveness of subsequent detection and absorption.
[0029] In addition, all components designed in this utility model are general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. Those skilled in the art can fully implement them, so there is no need to elaborate. The content protected by this utility model does not involve improvements to the internal structure and method.
[0030] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.
Claims
1. A chlorine detection device for coated sand, comprising a sample tank (1), a connecting pipe (8), a water pumping pipe (13), and a filter screen (10), characterized in that: A stirring shaft (4) is rotatably connected to the center of the bottom of the sample tank (1). The upper side wall of the sample tank (1) is connected to one end of the air inlet pipe (5). The other end of the air inlet pipe (5) passes through the top of the detection box (7) and is located below the inner side of the detection box (7). An exhaust fan (6) is fixedly connected to the inner side of the end of the air inlet pipe (5) near the sample tank (1). A water pumping pipe (13) passes through and connects to the top of both the sample tank (1) and the absorption box (9). A nozzle (14) is fixedly connected to the bottom of the water pumping pipe (13).
2. The chlorine detection device for coated sand according to claim 1, characterized in that: Both the detection box (7) and the absorption box (9) have a discharge port (15) with a valve on the lower side wall, and both the detection box (7) and the absorption box (9) have a feeding port (12) on the top.
3. The chlorine detection device for coated sand according to claim 1, characterized in that: The side wall of the testing box (7) is provided with an observation window (701).
4. The chlorine detection device for coated sand according to claim 1, characterized in that: A servo motor (3) is fixedly connected to the inner side of the sample tank (1) directly below the stirring shaft (4), and the outer end of the drive shaft of the servo motor (3) is fixedly connected to the stirring shaft (4) above.
5. The chlorine detection device for coated sand according to claim 1, characterized in that: The two ends of the connecting pipe (8) pass through the top of the detection box (7) and the absorption box (9) respectively and are located inside the two. The end of the connecting pipe (8) located inside the absorption box (9) is located on the lower inner side of the absorption box (9). Two parallel filter screens (10) are connected to the upper inner side of the absorption box (9), and the area between the filter screens (10) is filled with activated carbon (11).
6. The chlorine detection device for coated sand according to claim 1, characterized in that: The other end of the pumping pipe (13) at the top of the detection box (7) and the absorption box (9) is connected to the inlet pipe (131).