Urea solution concentration detection mechanism

Abstract

The utility model discloses a urea solution concentration detection mechanism, which relates to the technical field of urea solution concentration detection, and is characterized in that a cleaning assembly for cleaning a detection rod of a concentration detector and a detection assembly for detecting the urea solution concentration are sequentially arranged on the top surface of a platform from left to right; the cleaning assembly comprises an outer barrel and a cleaning pump which are fixedly arranged on the top surface of the platform, an inner barrel is fixedly arranged in the outer barrel, and a plurality of liquid outlet holes are formed in the inner barrel in the height direction of the inner barrel; a waste liquid discharge pipe communicated with the inner cylinder body is fixedly arranged on the bottom wall of the outer cylinder body; a stop valve connected with the annular cavity is fixedly arranged on the side wall of the outer barrel, and the other port of the stop valve is connected with the cleaning pump. The urea solution concentration detection device has the beneficial effects that the working intensity of workers is greatly reduced, and the urea solution concentration detection efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the technical field of detecting the concentration of urea solution, and in particular to a detection mechanism for the concentration of urea solution. Background Technology

[0002] Waste incinerators are used to incinerate municipal solid waste. Before incineration, urea solution needs to be sprayed onto the waste. The purpose of the urea solution is to absorb the harmful substances produced during the incineration process.

[0003] After the urea solution is prepared in the preparation tank, the process requires that the concentration of the urea solution be tested. The specific testing method is as follows:

[0004] S1. The worker immerses the detection rod 2 of the concentration detector 1 into the urea solution in the preparation tank 3. Figure 1 As shown, the concentration detector 1 transmits the measured concentration to the display screen of the controller, thus obtaining the first concentration value;

[0005] S2. Workers use clean water to wash away the urea solution adhering to the detection rod 2 of the concentration detector 1;

[0006] S3. Workers can obtain multiple concentration values ​​by repeating steps S1 to S2 multiple times.

[0007] S4. The worker takes the average of multiple concentration values, and the average value is the concentration of the urea solution, thus completing the detection of the urea solution concentration.

[0008] However, although workers can detect the concentration of urea solution using concentration detector 1, the following technical defects still exist in actual operation:

[0009] I. In step S1, the detection rod 2 of the concentration detector 1 needs to be manually immersed into the urea solution to obtain a concentration value. The entire operation needs to be completed manually, which increases the workload of the workers.

[0010] II. In steps S2 to S3, after each concentration value is detected by the concentration detector 1, the urea solution adhering to the detection rod 2 of the concentration detector 1 needs to be manually cleaned. Since the number of tests is high and the detection rod 2 of the concentration detector 1 needs to be manually cleaned after each test, this not only increases the workload of the workers, but also increases the detection time of urea solution concentration, thereby reducing the detection efficiency of urea solution concentration.

[0011] Therefore, there is an urgent need for a testing institution that can greatly reduce the workload of workers and greatly improve the efficiency of urea solution concentration detection. Utility Model Content

[0012] The purpose of this invention is to overcome the shortcomings of the prior art and provide a urea solution concentration detection device that greatly reduces the workload of workers and greatly improves the detection efficiency of urea solution concentration.

[0013] The purpose of this utility model is achieved through the following technical solution: a urea solution concentration detection mechanism, which includes a platform fixed on the right side wall of the preparation tank, and a cleaning component for cleaning the detection rod of the concentration detector and a detection component for detecting the concentration of urea solution are arranged sequentially from left to right on the top surface of the platform.

[0014] The cleaning assembly includes an outer cylinder and a cleaning pump fixed on the top surface of the platform. An inner cylinder is fixed inside the outer cylinder, and an annular cavity is formed between the inner and outer cylinders. Multiple liquid outlet holes are opened in the inner cylinder along its height direction. A central hole communicating with the inner cylinder is opened on the top wall of the outer cylinder. A waste liquid discharge pipe communicating with the inner cylinder is fixed on the bottom wall of the outer cylinder. A shut-off valve connected to the annular cavity is fixed on the side wall of the outer cylinder, and the other port of the shut-off valve is connected to the cleaning pump.

[0015] The detection assembly includes a vertical plate fixed to the top surface of the platform. A horizontal cylinder is fixed to the right end face of the upper end of the vertical plate. The piston rod of the horizontal cylinder passes through the vertical plate to the left, and a vertical cylinder is fixed to the extended end. A mounting plate is fixed to the actuating end of the piston rod of the vertical cylinder. A concentration detector is fixed to the top surface of the mounting plate. The detection rod of the concentration detector passes through the mounting plate downward, and the detection rod is located directly above the preparation tank.

[0016] The liquid outlet holes are evenly distributed on the inner cylinder.

[0017] The waste liquid discharge pipe extends downward through the platform, and its extension port is connected to the recycling tank.

[0018] A rubber ring is fixed on the top surface of the outer cylinder, and the inner hole of the rubber ring is connected to the central hole of the outer cylinder.

[0019] A connecting plate is fixed to the working end of the piston rod of the horizontal cylinder, and the cylinder body of the vertical cylinder is fixed to the top surface of the connecting plate, with the piston rod of the vertical cylinder penetrating downward through the connecting plate.

[0020] The testing device also includes a controller, which is electrically connected to the concentration detector, cleaning pump, horizontal cylinder, and vertical cylinder via signal lines.

[0021] This invention has the following advantages: it greatly reduces the workload of workers and greatly improves the efficiency of urea solution concentration detection. Attached Figure Description

[0022] Figure 1 This is a schematic diagram showing the immersion of the detection rod of the concentration detector into the urea solution in the preparation tank.

[0023] Figure 2 This is a schematic diagram of the structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the cleaning component.

[0025] Figure 4 This is a schematic diagram of the inner cylinder structure;

[0026] Figure 5 for Figure 4 Top view;

[0027] Figure 6 This is a schematic diagram of the detection component.

[0028] Figure 7 This is a schematic diagram showing the lower half of the detection rod of the concentration detector immersed in the urea solution in the preparation tank.

[0029] Figure 8 This is a schematic diagram showing the detection rod of the concentration detector positioned directly above the inner hole of the rubber ring.

[0030] Figure 9 This is a schematic diagram showing the detection rod of the concentration detector inside the inner cylinder.

[0031] Figure 10 for Figure 9 A magnified view of part A;

[0032] In the picture:

[0033] 1-Concentration detector, 2-Detection rod, 3-Preparation tank, 4-Platform, 5-Cleaning assembly, 6-Detection assembly, 7-Outer cylinder, 8-Cleaning pump, 9-Inner cylinder, 10-Discharge hole, 11-Center hole, 12-Waste liquid discharge pipe, 13-Stop valve, 14-Vertical plate, 15-Horizontal cylinder, 16-Vertical cylinder, 17-Mounting plate, 18-Rubber ring. Detailed Implementation

[0034] The present invention will be further described below with reference to the accompanying drawings. The scope of protection of the present invention is not limited to the following description:

[0035] like Figures 2-6 As shown, a urea solution concentration detection mechanism includes a platform 4 fixed on the right side wall of a preparation tank 3. On the top surface of the platform 4, from left to right, are arranged a cleaning component 5 for cleaning the detection rod 2 of the concentration detector 1 and a detection component 6 for detecting the concentration of the urea solution.

[0036] The cleaning assembly 5 includes an outer cylinder 7 fixed to the top surface of the platform 4 and a cleaning pump 8. An inner cylinder 9 is fixed inside the outer cylinder 7, forming an annular cavity between the inner cylinder 9 and the outer cylinder 7. Multiple liquid outlet holes 10 are evenly distributed along the height of the inner cylinder 9. A central hole 11 communicating with the inner cylinder 9 is formed on the top wall of the outer cylinder 7. A waste liquid discharge pipe 12 communicating with the inner cylinder 9 is fixed on the bottom wall of the outer cylinder 7. The waste liquid discharge pipe 12 penetrates downward through the platform 4, and its extended port communicates with the recovery tank. A shut-off valve 13 connected to the annular cavity is fixed on the side wall of the outer cylinder 7, and the other port of the shut-off valve 13 is connected to the cleaning pump 8. A rubber ring 18 is fixed on the top surface of the outer cylinder 7, and the inner hole of the rubber ring 18 communicates with the central hole 11 of the outer cylinder 7.

[0037] The detection assembly 6 includes a vertical plate 14 fixed to the top surface of the platform 4. A horizontal cylinder 15 is fixed to the right end face of the upper end of the vertical plate 14. The piston rod of the horizontal cylinder 15 extends to the left through the vertical plate 14, and a vertical cylinder 16 is fixed to its extended end. A mounting plate 17 is fixed to the working end of the piston rod of the vertical cylinder 16. A concentration detector 1 is fixed to the top surface of the mounting plate 17. The detection rod 2 of the concentration detector 1 extends downward through the mounting plate 17, and the detection rod 2 is located directly above the preparation tank 3. A connecting plate is fixed to the working end of the piston rod of the horizontal cylinder 15. The cylinder body of the vertical cylinder 16 is fixed to the top surface of the connecting plate, and the piston rod of the vertical cylinder 16 extends downward through the connecting plate.

[0038] The testing mechanism also includes a controller, which is electrically connected to the concentration detector 1, the cleaning pump 8, the horizontal cylinder 15, and the vertical cylinder 16 via signal lines. The operator can control the start or stop of the cleaning pump 8 through the controller, and can also control the extension or retraction of the piston rods of the horizontal cylinder 15 and the vertical cylinder 16, thus facilitating the operator's operation.

[0039] The method for workers to pre-prepare a urea solution in preparation tank 3 and then test the concentration of the urea solution is as follows:

[0040] S1. The worker controls the piston rod of the vertical cylinder 16 of the detection component 6 to extend downwards. The piston rod drives the mounting plate 17 to move downwards. The mounting plate 17 drives the concentration detector 1 and the detection rod 2 to move synchronously towards the preparation tank 3. When the worker observes that the lower half of the detection rod 2 of the concentration detector 1 is immersed in the urea solution in the preparation tank 3, as... Figure 7 As shown, the worker controls the vertical cylinder 16 to close. At this time, the concentration detector 1 transmits the measured concentration to the display screen of the controller, thus obtaining the first concentration value.

[0041] S2. The specific operating steps for cleaning the detection rod 2 of the concentration detector 1 are as follows:

[0042] S21. Control the piston rod of the vertical cylinder 16 to retract upwards. The piston rod drives the mounting plate 17 to move upwards. The mounting plate 17 drives the concentration detector 1 and the detection rod 2 to move upwards, so that the concentration detector 1 is reset.

[0043] S22. Control the piston rod of the horizontal cylinder 15 to retract to the right. The piston rod drives the connecting plate to move to the right, and the connecting plate drives the vertical cylinder 16 and the concentration detector 1 to move to the right synchronously. When the piston rod of the horizontal cylinder 15 is fully retracted, the detection rod 2 of the concentration detector 1 is exactly above the inner hole of the rubber ring 18. Figure 8 As shown;

[0044] S23. The piston rod of the vertical cylinder 16 extends downward, causing the mounting plate 17 to move downward. The mounting plate 17 then moves the concentration detector 1 and the detection rod 2 downward synchronously. The detection rod 2 passes sequentially through the inner hole of the rubber ring 18, the center hole 11 of the outer cylinder 7, and finally enters the inner cylinder 9. When the piston rod of the vertical cylinder 16 extends downward to the set stroke, the controller controls the vertical cylinder 16 to close. At this time, the mounting plate 17 just presses down on the rubber ring 18, and simultaneously, the detection rod 2 of the concentration detector 1 is just inside the inner cylinder 9. Figures 9-10 As shown;

[0045] S24. Control the start of cleaning pump 8 and shut-off valve 13. Cleaning pump 8 draws clean water from the cleaning tank. Under pump pressure, the clean water passes through cleaning pump 8, shut-off valve 13, and annular cavity in sequence, and finally sprays out from each outlet hole 10. The sprayed clean water cleans the detection rod 2 to remove the residual urea solution adhering to the detection rod 2. At the same time, the waste liquid generated during the cleaning process flows back to the recovery tank through the waste liquid discharge pipe 12. After cleaning for a period of time, control the start of cleaning pump 8 to shut down, thus finally completing the cleaning of the detection rod 2 of the concentration detector 1.

[0046] S3. Workers can obtain multiple concentration values ​​by repeating steps S1 to S2 multiple times.

[0047] S4. The worker calculates the average of multiple concentration values, and the calculated average is the concentration of the urea solution, thus finally completing the detection of the urea solution concentration.

[0048] As can be seen from step S1, the worker only needs to use the linkage between the vertical cylinder 16 of the detection component 6 and the concentration detector 1 to automatically immerse the detection rod 2 of the concentration detector 1 into the urea solution to obtain a concentration value. There is no need for the worker to manually immerse the detection rod 2 of the concentration detector 1 into the urea solution, which greatly reduces the worker's workload.

[0049] Furthermore, as can be seen from step S2, the worker only needs to first control the downward extension of the piston rod of the vertical cylinder 16 so that the detection rod 2 of the concentration detector 1 can be inserted into the inner cylinder 9. Then, the cleaning pump 8 is started so that clean water is sprayed out from each outlet hole 10. The sprayed clean water can wash away the residual urea solution adhering to the detection rod 2. Thus, this testing mechanism realizes automatic cleaning of the detection rod 2 of the concentration detector 1, eliminating the need for manual cleaning of the detection rod 2 of the concentration detector 1 after each test. This not only greatly reduces the workload of workers but also shortens the detection time of urea solution concentration, thereby greatly improving the detection efficiency of urea solution concentration.

[0050] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for detecting the concentration of urea solution, characterized in that: It includes a platform (4) fixed on the right side wall of the preparation tank (3), and a cleaning assembly (5) for cleaning the detection rod (2) of the concentration detector (1) and a detection assembly (6) for detecting the concentration of urea solution are arranged sequentially from left to right on the top surface of the platform (4). The cleaning assembly (5) includes an outer cylinder (7) and a cleaning pump (8) fixed on the top surface of the platform (4). An inner cylinder (9) is fixed inside the outer cylinder (7), and an annular cavity is formed between the inner cylinder (9) and the outer cylinder (7). Multiple liquid outlet holes (10) are opened in the inner cylinder (9) along its height direction. A central hole (11) communicating with the inner cylinder (9) is opened on the top wall of the outer cylinder (7). A waste liquid discharge pipe (12) communicating with the inner cylinder (9) is fixed on the bottom wall of the outer cylinder (7). A shut-off valve (13) connected to the annular cavity is fixed on the side wall of the outer cylinder (7). The other port of the shut-off valve (13) is connected to the cleaning pump (8). The detection assembly (6) includes a vertical plate (14) fixed on the top surface of the platform (4). A horizontal cylinder (15) is fixed on the right end face of the upper end of the vertical plate (14). The piston rod of the horizontal cylinder (15) passes through the vertical plate (14) to the left, and a vertical cylinder (16) is fixed on the extended end. A mounting plate (17) is fixed on the working end of the piston rod of the vertical cylinder (16). A concentration detector (1) is fixed on the top surface of the mounting plate (17). The detection rod (2) of the concentration detector (1) passes through the mounting plate (17) downward. The detection rod (2) is located directly above the preparation tank (3).

2. The urea solution concentration detection mechanism according to claim 1, characterized in that: The liquid outlet holes (10) are evenly distributed on the inner cylinder (9).

3. The urea solution concentration detection mechanism according to claim 2, characterized in that: The waste liquid discharge pipe (12) extends downward through the platform (4), and its extension port is connected to the recycling tank.

4. The urea solution concentration detection mechanism according to claim 3, characterized in that: A rubber ring (18) is fixed on the top surface of the outer cylinder (7), and the inner hole of the rubber ring (18) is connected to the central hole (11) of the outer cylinder (7).

5. The urea solution concentration detection mechanism according to claim 4, characterized in that: A connecting plate is fixed on the working end of the piston rod of the horizontal cylinder (15), the cylinder body of the vertical cylinder (16) is fixed on the top surface of the connecting plate, and the piston rod of the vertical cylinder (16) passes through the connecting plate downward.

6. The urea solution concentration detection mechanism according to claim 5, characterized in that: The testing mechanism also includes a controller, which is electrically connected to the concentration detector (1), the cleaning pump (8), the horizontal cylinder (15), and the vertical cylinder (16) via signal lines.

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