Chemical cleaning device

Abstract

The utility model relates to the technical field of internal cleaning of equipment, in particular to a chemical cleaning device which comprises a dosing tank, a water supply pipeline and a storage tank, the upper end of the dosing tank is open, a water pump is arranged at one end of the water supply pipeline, and the other end of the water supply pipeline horizontally penetrates through the dosing tank and then extends into the storage tank. The inner wall of the pipe section, about to enter the dosing tank, of the water supply pipeline is connected with a throttling pressurizing pipe with the pipe diameter smaller than that of the water supply pipeline, the throttling pressurizing pipe extends into the pipe section, going out of the dosing tank, of the water supply pipeline, and a plurality of dosing openings are formed in the lower wall of the pipe section, located in the dosing tank, of the water supply pipeline. Materials are convenient to obtain, and manufacturing is easy; medicine putting operation is easy, convenient and fast; the risk is reduced, and the safety is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of internal cleaning of equipment, and in particular provides a chemical cleaning device. Background Art

[0002] At present, during the construction of domestic power plants, chemical cleaning of the devices to be cleaned (such as steam drums, water-cooled walls and boiler pipes, etc.) is to wash away the iron oxide scale, rust, welding slag, mud, sand, insulation materials and other debris in the newly installed devices to be cleaned by chemical washing, so as to improve the cleanliness of the system; oily substances and silicon-containing compounds can be removed by alkali washing; metal corrosion products can be removed by acid washing. During chemical cleaning, a platform is usually set up above the device to be cleaned, and the drugs are transported to the top of the platform. The drugs are put into the device to be cleaned at the drug injection port above the device to be cleaned. Due to the limited size of the device to be cleaned, it is difficult to operate on the upper platform, which is time-consuming and laborious. The drugs used, such as trisodium phosphate, disodium hydrogen phosphate, ammonia water, etc., are harmful to the human body if they come into contact with the skin. In addition, steam is needed to heat the chemical water in the cleaning water tank during cleaning. The steam temperature is above 100°C, which is easy to burn. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a chemical cleaning device.

[0004] The utility model is implemented in this way, providing a chemical cleaning device, including a dosing tank, a water supply pipe and a storage tank, the dosing tank has an opening at the upper end, a water pump is arranged at one end of the water supply pipe, the other end of the water supply pipe horizontally penetrates the dosing tank and then extends into the storage tank, a throttling and boosting pipe with a smaller diameter than the water supply pipe is connected to the inner wall of the pipe section of the water supply pipe about to enter the dosing tank, the throttling and boosting pipe extends all the way to the pipe section of the water supply pipe after it goes out of the dosing tank, and a plurality of drug inlet openings are arranged on the lower wall of the pipe section of the water supply pipe located inside the dosing tank.

[0005] Preferably, a solvent branch pipe is connected to the side of the water supply pipe where the throttling and boosting pipe is connected, close to the water pump, and a solvent spray pipe is provided around the inner wall of the upper end of the dosing tank. The solvent branch pipe is connected to the solvent spray pipe, and a plurality of spray ports are provided on the side of the solvent spray pipe facing the center of the dosing tank.

[0006] Further preferably, a dissolving drug gate valve is provided on the dissolving drug branch pipe.

[0007] Further preferably, a first water inlet gate valve is provided on the side of the water supply pipe connected to the drug-dissolving branch pipe close to the water pump; and a second water inlet gate valve is provided on the water supply pipe close to the storage tank at the outlet of the throttling booster pipe.

[0008] Further preferably, an overflow pipe is provided above the side wall of the dosing tank, and a sewage pipe is provided below the side wall of the dosing tank.

[0009] Further preferably, a dosing pipeline is connected to the storage tank, and a dosing pump is provided on the dosing pipeline.

[0010] Compared with the prior art, the advantages of the utility model are:

[0011] 1. Convenient materials and simple production;

[0012] 2. Easy to operate drug delivery, convenient and fast;

[0013] 3. Reduce risks and greatly increase safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention is further described in detail below with reference to the accompanying drawings and implementation modes:

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0017] In order to solve the difficulties in operation when placing chemicals, avoid burns, reduce the risks of high-altitude operations and chemical harm to the human body, the utility model uses the construction site equipment packaging iron box, remaining pipes, valves, etc. to make a chemical cleaning device. Figure 1 The device includes a dosing tank 1, a water supply pipe 2 and a storage tank 4. The upper end of the dosing tank 1 is open, and a water pump 3 is arranged at one end of the water supply pipe 2. The other end of the water supply pipe 2 horizontally penetrates the dosing tank 1 and then extends into the storage tank 4. A throttling and boosting pipe 5 with a smaller diameter than the water supply pipe 2 is connected to the inner wall of the pipe section of the water supply pipe 2 that is about to enter the dosing tank 1. The throttling and boosting pipe 5 extends all the way to the pipe section of the water supply pipe 2 after it goes out of the dosing tank 1. A plurality of drug inlet openings 6 are arranged on the lower wall of the pipe section of the water supply pipe 2 located inside the dosing tank 1.

[0018] The utility model is arranged on the ground at a height suitable for the placement operation. After the cleaning starts, liquid medicine is added to the dosing tank 1 to a height exceeding the water supply pipe 2. Water is pumped by the water pump 3, and the water enters the throttling and boosting pipe 5 through the water supply pipe 2. As the diameter of the throttling and boosting pipe 5 is reduced, the water flow pressure is increased. After going out from the outlet of the throttling and boosting pipe 5, its continuous flow forms a negative pressure in the space between the throttling and boosting pipe 5 and the water supply pipe 2, so that the liquid medicine enters between the throttling and boosting pipe 5 and the water supply pipe 2 from the medicine inlet opening 6, and is driven by the positive pressure water flow coming out of the throttling and boosting pipe 5 to enter the storage tank 4 for storage. When it is necessary to clean the device to be cleaned, the medicine can be drawn out from the storage tank 4.

[0019] When adding solid medicines, in order to dissolve the solid medicines, a solvent branch pipe 7 is connected to the side of the water supply pipe 2 where the throttling and boosting pipe 5 is connected, close to the water pump 3, and a solvent spray pipe 8 is provided around the inner wall of the upper end of the dosing tank 1. The solvent branch pipe 7 is connected to the solvent spray pipe 8, and a plurality of spray ports are provided on the side of the solvent spray pipe 8 facing the center of the dosing tank 1.

[0020] During operation, solid powder medicines are added into the medicine adding tank 1, and water is sprayed into the medicine adding tank 1 through the spray ports of the medicine dissolving branch pipe 7 and the medicine dissolving spray pipe 8 to dissolve the solid medicines. After the dissolution is completed, subsequent medicine adding operations can be carried out.

[0021] In order to stop spraying when adding liquid medicine, as an improvement, a dissolving medicine gate valve 9 is provided on the dissolving medicine branch pipe 7.

[0022] In order to control the overall water inlet and outlet, as an improvement, a first water inlet gate valve 10 is provided on the side of the water supply pipe 2 connected to the drug branch pipe 7 close to the water pump 3; a second water inlet gate valve 11 is provided on the water supply pipe 2 at the outlet of the throttling booster pipe 5 close to the storage tank.

[0023] Preferably, an overflow pipe 12 is provided above the side wall of the dosing tank 1 , and a sewage pipe 13 is provided below the side wall of the dosing tank 1 .

[0024] In order to facilitate the addition of medicine to the device to be cleaned, preferably, a dosing pipeline 14 is connected to the storage tank 4, and a dosing pump 15 is provided on the dosing pipeline 14. The dosing pump 15 pumps the medicine into the steam drum, water wall and boiler pipeline waiting for cleaning.

[0025] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A chemical cleaning device, characterized in that: The invention comprises a dosing tank (1), a water supply pipe (2) and a storage tank (4); the dosing tank (1) has an opening at the upper end; a water pump (3) is arranged at one end of the water supply pipe (2); the other end of the water supply pipe (2) horizontally penetrates the dosing tank (1) and then extends into the storage tank (4); a throttling and pressurizing pipe (5) having a smaller diameter than the water supply pipe (2) is connected to the inner wall of the pipe section of the water supply pipe (2) about to enter the dosing tank (1); the throttling and pressurizing pipe (5) extends all the way to the pipe section of the water supply pipe (2) after it exits the dosing tank (1); and a plurality of drug inlet openings (6) are arranged on the lower wall of the pipe section of the water supply pipe (2) located inside the dosing tank (1).

2. The chemical cleaning device according to claim 1, characterized in that: A solvent branch pipe (7) is connected to the side of the water supply pipe (2) where the throttling boost pipe (5) is connected and close to the water pump (3). A solvent spray pipe (8) is provided around the inner wall of the upper end of the dosing tank (1). The solvent branch pipe (7) is connected to the solvent spray pipe (8). A plurality of spray ports are provided on the side of the solvent spray pipe (8) facing the center of the dosing tank (1).

3. The chemical cleaning device according to claim 2, characterized in that: A dissolving medicine gate valve (9) is provided on the dissolving medicine branch pipe (7).

4. The chemical cleaning device according to claim 2, characterized in that: A first water inlet gate valve (10) is provided on the side of the water supply pipe (2) connected to the drug-dissolving branch pipe (7) close to the water pump (3); and a second water inlet gate valve (11) is provided on the water supply pipe (2) at the outlet of the throttling booster pipe (5) close to the storage tank.

5. The chemical cleaning device according to claim 1, characterized in that: An overflow pipe (12) is provided above the side wall of the dosing tank (1), and a sewage discharge pipe (13) is provided below the side wall of the dosing tank (1).

6. The chemical cleaning device according to claim 1, characterized in that: The storage tank (4) is connected to a dosing pipeline (14), and a dosing pump (15) is arranged on the dosing pipeline (14).

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