CN211706244U - Welding smoke and dust water bath purifier - Google Patents

Abstract

The utility model discloses a welding smoke water bath purification device, which comprises a smoke collecting cover, a smoke branch pipe, a regulating valve, a gas collecting tank, a circulating water pipe, a smoke main pipe, a purification water tank, a circulating water pump, a draught fan and a purification tank assembly; the purification tank assembly comprises a water tank cover, a spray pipe, a water tank body, a gas filter screen plate, a water filling port, a communicating pipe, a liquid level meter and a drain valve; the water tank body comprises two water tanks which are arranged at intervals at the left side and the right side; the air filter screen plates are horizontally arranged in the two water tank bodies, and the two water tank bodies are connected through a communicating pipe to form a U-shaped structure. The device well solves the problem of high-concentration welding smoke dust purification treatment work generated in the welding process. Compared with a general cloth bag or filter drum type dust remover, the utility model reduces the time for replacing the filter material by shutting down a large number, saves the labor cost and the cost of the filter material, and improves the utilization efficiency of the device.

Description

Welding smoke and dust water bath purifier

Technical Field

The utility model relates to a smoke and dust purifier technical field especially relates to a welding smoke and dust water bath purifier.

Background

The welding fume is metal dust, metal oxynitride vapor particles and nitrogen oxide gas which are vaporized and evaporated and ionized by the high temperature and ionization action during electric arc heating. Contains heavy metals and toxic and harmful components. Inhalation can cause significant bodily injury. Generally, the flue gas concentration of open air or single arc welding is not very high, and a general dust remover (a filter element type or a cloth bag type) is generally adopted for dust removal and purification treatment. The high-concentration welding smoke can quickly block a filter medium by using a universal dust remover (a filter element type or a cloth bag type), and a dust collecting device cannot be cleaned. The filter medium (filter element or cloth bag) can only be replaced frequently. The inner bottom corner welding of the U-shaped ribs is that two electric arcs are welded in a long and thin tubular space, ventilation and dilution of welding smoke can affect the protection effect of welding shielding gas, and in addition, a plurality of U-shaped ribs are welded simultaneously (generally, six welding guns and twelve welding guns are welded simultaneously). Therefore, the dust removal and purification treatment of a large amount of high-concentration welding flue gas becomes a great problem, and the general dust remover (filter element type and cloth bag type) frequently changes the filter medium (filter element or cloth bag), thereby not only consuming excessive materials and labor cost. More importantly, the welding operation can not be carried out when the filter medium (filter element or cloth bag) is replaced, and the production efficiency of the whole machine is greatly influenced.

Disclosure of Invention

The utility model discloses an aim at is with water as filter media, lets the welding flue gas abundant, the big specific surface area who relapse contact with water. Harmful ingredients in the welding fume are dissolved and adsorbed in water and are retained in the purification tank, and the purified gas is discharged along with the induced draft fan.

The utility model provides a welding smoke and dust water bath purifier, characterized by: comprises a flue gas collecting cover, a flue gas branch pipe, a regulating valve, a gas collecting tank, a circulating water pipe, a flue gas main pipe, a purification water tank, a circulating water pump, a draught fan and a purification tank assembly;

the purification tank assembly comprises a water tank cover, a spray pipe, a water tank body, a gas filter screen plate, a water filling port, a communicating pipe, a liquid level meter and a drain valve;

the water tank body comprises two water tanks which are arranged at intervals at the left side and the right side; the air filter screen plates are horizontally arranged in the two water tank bodies, and the two water tank bodies are connected through a communicating pipe to form a U-shaped structure;

the smoke collecting cover is connected with one end of a smoke branch pipe, the other end of the smoke branch pipe is communicated with one side of the gas collecting tank through a regulating valve, the upper end of the gas collecting tank is communicated with one end of a smoke main pipe arranged on the left side, and the other end of the smoke main pipe is connected with an opening on a water tank cover of a water tank body on the left side;

one end of the circulating water pipe is communicated with a spraying pipe which is horizontally arranged inside the upper side of the left water tank body, and the middle part of the circulating water pipe is communicated with a circulating water pump and the other end of the circulating water pipe is connected with a water outlet at the lower end of the side wall of the right water tank body;

the liquid level meter is arranged close to the side wall of the right tank body;

the port on the water tank cover of the right water tank body is communicated with the induced draft fan through the right flue gas main pipe, the outer side wall of the tank body of the right water tank body is provided with a water injection pipe, and the water injection pipe is provided with a water injection port;

the lower ports of the left water tank body and the right water tank body are respectively connected with a water drainage pipe, and the water drainage pipes are all provided with water drainage valves.

Furthermore, three layers of air filtering screen plates are symmetrically arranged in parallel in the left and right side water tank bodies respectively, and a plurality of air filtering meshes are uniformly arranged on each air filtering screen plate.

Further, the distance between the gas filter screen plate in the water tank body and the upper end of the communicating pipe is 50 +/-5 mm.

The beneficial effects of the utility model reside in that:

the device well solves the problem of high-concentration welding smoke purification treatment work generated in the welding process. Compared with a general cloth bag or filter drum type dust remover, the filter material replacing time during shutdown is greatly reduced, labor cost and material cost are saved, and the using efficiency of the device is improved.

Drawings

Fig. 1 is a general schematic diagram of the present invention.

FIG. 2 is a schematic cross-sectional view of a purge tank assembly.

Detailed Description

The invention is further described with reference to the following specific drawings and examples.

As shown in fig. 1-2:

a welding fume water bath purification device comprises a fume collecting cover 1, a fume branch pipe 2, a regulating valve 3, a gas collecting tank 4, a circulating water pipe 5, a fume main pipe 6, a circulating water pump 7, an induced draft fan 8 and a purification tank assembly 10;

the purification tank assembly 10 comprises a water tank cover 11, a spray pipe 12, a water tank body 13, a gas filter screen plate 14, a water injection port 15, a communicating pipe 16, a liquid level meter 17 and a drain valve 18;

the water tank body 13 comprises two water tank bodies which are arranged at intervals at the left side and the right side; the air filter screen plates 14 are horizontally arranged in the two water tank bodies 13, and the two water tank bodies 13 are connected through a communicating pipe 16 to form a U-shaped structure;

the flue gas collecting hood 1 is connected with one end of a flue gas branch pipe 2, the other end of the flue gas branch pipe 2 is communicated with one side of a gas collecting tank 4 through a regulating valve 3, the upper end of the gas collecting tank 4 is communicated with one end of a flue gas main pipe 6 arranged on the left side, and the other end of the flue gas main pipe 6 is connected with an opening on a water tank cover 11 of a left water tank body 13;

one end of the circulating water pipe 5 is communicated with a spraying pipe 12 which is horizontally arranged inside the upper side of the left water tank body 13, and the other end of the circulating water pipe 5 is connected with a water outlet at the lower end of the side wall of the right water tank body 13 after the middle part of the circulating water pipe 5 is communicated with the circulating water pump 7;

the port on the water tank cover 11 of the right water tank body 13 is communicated with the induced draft fan 8 through the right flue gas main pipe 6, the outer side wall of the tank body of the right water tank body 13 is provided with a water injection pipe, and the water injection pipe is provided with a water injection port 15;

the lower ports of the left water tank body and the right water tank body are respectively connected with a water discharge pipe, and water discharge valves 18 are respectively arranged on the water discharge pipes.

Three layers of air filter screen plates 14 are symmetrically arranged in parallel in the left and right water tanks respectively, and a plurality of air filter meshes are uniformly arranged on each air filter screen plate.

The distance between the gas filter screen plate 14 in the water tank body 13 and the upper end of the communicating pipe 16 is 50 mm plus or minus 5 mm.

The welding flue gas is intensively sucked into the gas collecting tank 4 through the collecting covers 1, the flue gas branch pipes 2 and the regulating valve 3 under the action of the draught fan 8, and flows into the purifying tank assembly 10 through the flue gas main pipe 6. After being sprayed with water mist by the annular microporous spraying pipe 12, the water mist is sucked into water by the negative pressure of the induced draft fan 8 and then flows into the other water tank body through the connecting pipe 16 connecting the two water tank bodies 13 to rise out of the water surface. And the smoke flows out and is discharged through the other section of the main flue gas pipe 6 and the induced draft fan 8. In the process that the welding fume flows below the water surface under the action of negative pressure, the welding fume respectively passes through six layers of gas filter screen plates 14 for six times, and the gas filter screen plates repeatedly cut large bubbles into tiny bubbles with the size capable of passing through mesh holes of the gas filter screen, so that the unit contact area of the welding fume and the water is increased. After the welding smoke dust flows through the purification tank assembly under the action of the negative pressure of the induced draft fan, harmful gas and dust are removed through spraying and fine-bubble water bath purification. The water mist sprayed by the spray pipe 12 is extracted by a circulating water pump 7 in a right water tank body 13 through a circulating water pipe 5.

Before the device is used, water is injected into the tank body, the gas flow of each gas branch pipe regulating valve is regulated until the gas flow of each branch pipe is basically consistent, the water level of the water tank is regulated, the suction flow is regulated by utilizing the height of the water level, and the welding smoke dust can be completely sucked. The welding protection quality is prevented from being influenced by overlarge inflow. The specific method comprises the steps of firstly injecting water to the lowest water level, pushing the gas collecting hood to about two meters inside the U rib, starting the induced draft fan to suck gas, slowly injecting water, and using flames to feel slight air flow at the end opening of the U rib. And closing the drain valve and the induced draft fan, and marking the liquid level height near the liquid level pipe. After various adjustments are completed, the filter can be used for filtration and purification. When welding, the induced draft fan is directly opened. After the daily work is finished, the sewage is drained and the tank body is flushed. And injecting water to a calibration liquid level before starting work.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the examples, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims (3)

1. The utility model provides a welding smoke and dust water bath purifier, characterized by: comprises a flue gas collecting hood (1), a flue gas branch pipe (2), a regulating valve (3), a gas collecting tank (4), a circulating water pipe (5), a flue gas main pipe (6), a circulating water pump (7), an induced draft fan (8) and a purifying tank assembly (10);

the purification tank assembly (10) comprises a water tank cover (11), a spray pipe (12), a water tank body (13), a gas filter screen plate (14), a water filling port (15), a communicating pipe (16), a liquid level meter (17) and a drain valve (18);

the water tank body (13) comprises two water tank bodies which are arranged at the left side and the right side at intervals; the air filter screen plates (14) are horizontally arranged in the two water tank bodies (13), and the two water tank bodies (13) are connected through a communicating pipe (16) to form a U-shaped structure;

the smoke collecting hood (1) is connected with one end of a smoke branch pipe (2), the other end of the smoke branch pipe (2) is communicated with one side of a gas collecting tank (4) through a regulating valve (3), the upper end of the gas collecting tank (4) is communicated with one end of a smoke main pipe (6) arranged on the left side, and the other end of the smoke main pipe (6) on the left side is connected with an opening on a water tank cover (11) of a water tank body (13) on the left side;

one end of the circulating water pipe (5) is communicated with a spray pipe (12) which is horizontally arranged inside the upper side of the left water tank body (13), and the other end of the circulating water pipe (5) is connected with a water outlet at the lower end of the side wall of the right water tank body (13) after the middle part of the circulating water pipe is communicated with the circulating water pump (7);

the liquid level meter (17) is arranged close to the side wall of the right tank body;

the port on the water tank cover (11) of the right water tank body (13) is communicated with the induced draft fan (8) through the right flue gas main pipe (6), the outer side wall of the right water tank body (13) is provided with a water injection pipe, and the water injection pipe is provided with a water injection port (15);

the lower ports of the left water tank body and the right water tank body are respectively connected with a water discharge pipe, and water discharge valves (18) are arranged on the two water discharge pipes.

2. The water bath purification device for welding fume as claimed in claim 1,

three layers of air filter screen plates (14) are symmetrically arranged in parallel in the left and right water tanks respectively, and a plurality of air filter screen holes are uniformly arranged on each air filter screen plate.

3. The water bath purification device for welding fume as claimed in claim 1,

the distance between the gas filter screen plate (14) in the water tank body (13) and the upper end of the communicating pipe (16) is 50 +/-5 mm.

Images