Rapid drainage device for bypass pipe maintenance

Abstract

A quick drainage device for maintenance of a bypass pipe comprises an air compression device for providing positive pressure for a cooling bypass pipe of a neutralization kettle, and valves are further mounted at a cooling water inlet and a cooling water outlet and used for forming a closed space and providing enough pressure to drain water in the cooling bypass pipe of the neutralization kettle. According to the structure, the maintenance time of the cooling bypass pipe of the neutralization kettle is remarkably shortened, the water in the cooling bypass pipe of the neutralization kettle can be completely discharged only by 4-5 hours in an original drainage method, the cooling bypass pipe of the neutralization kettle can be completely discharged by the aid of the structure, and the cooling bypass pipe of the neutralization kettle is convenient to use. And the drainage time of the cooling bypass pipe of the neutralization kettle can be shortened to 0.5 hour, so that the maintenance efficiency is greatly improved, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical equipment maintenance, in particular to a rapid drainage device for bypass pipe maintenance. Background Art

[0002] During the production of calcium hydrogen phosphate in the calcium hydrogen phosphate workshop, one of the important steps is neutralization. Food-grade phosphoric acid reacts with phosphoric acid calcium solution to produce calcium hydrogen phosphate. The most important control parameters in the neutralization reaction are pH and temperature. The pH is mainly measured by instruments, and various raw materials are appropriately added according to the results to achieve the effect of controlling the pH. The control of temperature basically depends on the cooling bypass pipe in the neutralization kettle. The cooling water enters the cooling bypass pipe of the neutralization kettle from the cooling water inlet and flows out from the cooling water outlet. The reaction temperature is controlled by adjusting the flow rate of the cooling water. However, since the phosphoric acid in the neutralization kettle belongs to medium-strong acid, it will corrode the cooling bypass pipe of the neutralization kettle, resulting in frequent damage and leakage of the cooling bypass pipe of the neutralization kettle, seriously affecting the product quality. Each time the cooling bypass pipe of the neutralization kettle is repaired, the damaged part needs to be enlarged to drain the cooling water in the pipe. This process takes about 4 to 5 hours, and then welding is carried out. The repair efficiency is very low, time-consuming and laborious. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to quickly drain the cooling water in the cooling bypass pipe of the neutralization kettle, shorten the drainage time, and improve the repair efficiency of the bypass pipe. The main principle is to squeeze through compressed air, so that the pressure in the bypass pipe of the neutralization kettle is greater than the external atmospheric pressure, forming a positive pressure. In this way, the cooling water in the cooling bypass pipe of the neutralization kettle can be quickly drained out of the pipe, shortening the drainage time and improving the repair efficiency.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A rapid drainage device for bypass pipe maintenance, including a cooling bypass pipe of the neutralization kettle. The cooling bypass pipe of the neutralization kettle is connected to a compressed air valve. A cooling water inlet valve is installed at the front end of the cooling bypass pipe of the neutralization kettle. A drainage valve for the bypass pipe of the neutralization kettle is provided at the lowest part of the cooling bypass pipe of the neutralization kettle. A cooling water outlet valve is provided at the end of the cooling bypass pipe of the neutralization kettle.

[0006] Further, the compressed air valve is located between the cooling water inlet valve and the cooling water outlet valve, and is located at the top of the cooling bypass pipe of the neutralization kettle.

[0007] Further, the compressed air valve is connected to external compressed air through a compressed air pipe.

[0008] Further, the drainage valve for the bypass pipe of the neutralization kettle is located inside the neutralization kettle.

[0009] Further, a stirring blade is provided inside the neutralization kettle, and the stirring blade of the neutralization kettle does not contact the drain valve of the bypass pipe of the neutralization kettle.

[0010] Further, the stirring blade of the neutralization kettle is connected to a stirring motor, and the stirring blade of the neutralization kettle is driven by the stirring motor.

[0011] Further, a discharge valve of the neutralization kettle is provided at the bottom of the neutralization kettle.

[0012] Further, a flange with a diameter of DN100 is used for connecting between the cooling bypass pipe of the neutralization kettle and the valve.

[0013] A quick drainage device for bypass pipe maintenance provided by the present utility model has the following beneficial effects by adopting the above structure:

[0014] (1) Simple structure: The device of the quick drainage device for bypass pipe maintenance is simple, convenient for installation, operation, and later maintenance;

[0015] (2) Quick response: The special structure of the quick drainage device for bypass pipe maintenance enables it to quickly drain the cooling water in the cooling bypass pipe of the neutralization kettle, improving the maintenance efficiency;

[0016] (3) Energy conservation and environmental protection: The quick drainage device for bypass pipe maintenance adopts high efficiency and durability, reducing energy consumption and cost;

[0017] (4) Safe and reliable: The quick drainage device for bypass pipe maintenance can effectively prevent accidents caused by abnormal cooling water bypass pipes, ensuring personal and property safety. [[ID=2,6]]Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the present utility model.

[0019] Explanation of the marks in the figure: 1. Cooling water outlet valve, 2. Stirring motor, 3. Compressed air pipe, 4. Compressed air valve, 5. Cooling water inlet valve, 6. Cooling bypass pipe of the neutralization kettle, 7. Stirring blade of the neutralization kettle, 8. Drain valve of the bypass pipe of the neutralization kettle, 9. Discharge valve of the neutralization kettle, 10. Neutralization kettle. Detailed Embodiments

[0020] The implementation scheme of the present utility model will be described in detail below in conjunction with the embodiments. The following embodiments are only used to illustrate the present utility model and should not be regarded as limiting the scope of the present utility model.

[0021] Embodiment 1

[0022] A quick drainage device for side pipe maintenance, including a side pipe 6 for cooling the neutralization kettle. The side pipe 6 for cooling the neutralization kettle is connected to a compressed air valve 4. A cooling water inlet valve 5 is installed at the front end of the side pipe 6 for cooling the neutralization kettle. A side pipe drain valve 8 for the neutralization kettle is provided at the lowest point of the side pipe 6 for cooling the neutralization kettle. A cooling water outlet valve 1 is provided at the end of the side pipe 6 for cooling the neutralization kettle.

[0023] Further, the compressed air valve 4 is located between the cooling water inlet valve 5 and the cooling water outlet valve 1, and is located at the top of the side pipe 6 for cooling the neutralization kettle.

[0024] Further, the compressed air valve 4 is connected to external compressed air through a compressed air pipe 3.

[0025] Further, the side pipe drain valve 8 for the neutralization kettle is located inside the neutralization kettle 10.

[0026] Further, a stirring blade 7 for the neutralization kettle is provided inside the neutralization kettle 10, and the stirring blade 7 for the neutralization kettle does not contact the side pipe drain valve 8 for the neutralization kettle.

[0027] Further, the stirring blade 7 for the neutralization kettle is connected to a stirring motor 2, and the stirring blade 7 for the neutralization kettle is driven by the stirring motor 2.

[0028] Further, a discharge valve 9 for the neutralization kettle is provided at the bottom of the neutralization kettle 10.

[0029] Further, a flange with DN100 is used for the connection between the side pipe 6 for cooling the neutralization kettle and the valve.

[0030] Example 2

[0031] Using the device of Example 1, the specific working process is as follows:

[0032] When performing side pipe maintenance operations in the hydrogen calcium workshop: Open the side pipe drain valve 8 for the neutralization kettle, open the compressed air valve 4, so that compressed air enters the side pipe 6 for cooling the neutralization kettle, close the cooling water outlet valve 1 and the cooling water inlet valve 5. The compressed air enters the side pipe 6 for cooling the neutralization kettle through the compressed air pipe 3, providing a positive pressure for the side pipe 6 for cooling the neutralization kettle. Under the action of the pressure, the cooling water inside the side pipe 6 for cooling the neutralization kettle is quickly discharged from the side pipe 6 for cooling the neutralization kettle through the side pipe drain valve 8 for the neutralization kettle, reducing the maintenance time.

[0033] Compressed air provides a positive pressure for the bypass pipe 6 for cooling the neutralization kettle. At the same time, valves are also installed at the cooling water inlet and the cooling water outlet. Its function is to form a closed space and provide sufficient pressure to drain the water in the bypass pipe 6 for cooling the neutralization kettle. A drain valve 8 for the bypass pipe of the neutralization kettle is installed at the lowest end of the bypass pipe 6 for cooling the neutralization kettle, aiming to drain the water in the bypass pipe 6 for cooling the neutralization kettle. With the above structure, the maintenance time of the bypass pipe 6 for cooling the neutralization kettle is significantly reduced. The original drainage method takes 4 to 5 hours to completely drain the water in the bypass pipe for the neutralization kettle; with the above device, the drainage time of the bypass pipe 6 for cooling the neutralization kettle can be shortened to 0.5 hours, greatly improving the maintenance efficiency and reducing the maintenance cost.

[0034] The utility model significantly solves the problem of long maintenance time of the bypass pipe, prevents waste of resources, reduces the maintenance cost of the bypass pipe for cooling the neutralization kettle, reduces the maintenance time of the bypass pipe, ensures the cleanliness of the production environment, and improves the maintenance efficiency.

Claims

1. A rapid drainage device for bypass pipe maintenance, characterized in that It includes a cooling bypass pipe (6) for the neutralization kettle. The cooling bypass pipe (6) of the neutralization kettle is connected to a compressed air valve (4). A cooling water inlet valve (5) is installed at the front end of the cooling bypass pipe (6) of the neutralization kettle. A drain valve (8) for the bypass pipe of the neutralization kettle is provided at the lowest point of the cooling bypass pipe (6) of the neutralization kettle. A cooling water outlet valve (1) is provided at the end of the cooling bypass pipe (6) of the neutralization kettle.

2. The quick drainage device for side pipe maintenance according to claim 1, characterized in that, The compressed air valve (4) is connected to external compressed air through a compressed air pipe (3).

3. The rapid drainage device for bypass pipe maintenance according to claim 1, characterized in that, The drain valve (8) for the bypass pipe of the neutralization kettle is located inside the neutralization kettle (10).

4. The rapid drainage device for side pipe maintenance according to claim 3, characterized in that, A stirring blade (7) for the neutralization kettle is provided inside the neutralization kettle (10), and the stirring blade (7) for the neutralization kettle does not contact the drain valve (8) for the bypass pipe of the neutralization kettle.

5. The rapid drainage device for bypass pipe maintenance according to claim 3, characterized in that, The stirring blade (7) for the neutralization kettle is connected to a stirring motor (2), and the stirring blade (7) for the neutralization kettle is driven by the stirring motor (2).

6. The rapid drainage device for lateral pipe maintenance according to claim 3, characterized in that, A discharge valve (9) for the neutralization kettle is provided at the bottom of the neutralization kettle (10).

7. A quick drainage device for lateral pipe maintenance according to claim 1, characterized in that, The compressed air valve (4) is located between the cooling water inlet valve (5) and the cooling water outlet valve (1), and is located at the top of the cooling bypass pipe (6) of the neutralization kettle.

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