CN211623845U

CN211623845U - Air suction drainage device

Info

Publication number: CN211623845U
Application number: CN201922028466.3U
Authority: CN
Inventors: 李连杰; 邢维旦; 俞立锋
Original assignee: Ningxia Sun Magnesium Industry Co ltd
Current assignee: Ningxia Sun Magnesium Industry Co ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-10-02
Anticipated expiration: 2029-11-22

Abstract

The utility model discloses a drainage device breathes in, including vacuum machine, siphon, the pipeline of connecting vacuum machine and siphon, be equipped with the adjustment mechanism who is used for controlling the speed of breathing in on the pipeline, adjustment mechanism includes and links to each other with the vacuum machine and can be sucked into the inside jar of breathing in that is vacuum state and the buffer tank that links to each other with the jar of breathing in by the vacuum machine, and the buffer tank links to each other with the siphon, is provided with the stop valve between vacuum machine and the jar of breathing in, is provided with aperture adjustable governing valve between jar of breathing in and the buffer tank. The air suction tank sucks air in the siphon pipe, drainage of conveying metal liquid by the siphon pipe is achieved, the adjusting mechanism can control air suction rate, operation is safe, the deaerator and flame-retardant gas effectively prevent pollution and oxidation in the metal liquid conveying process, and the product percent of pass is improved.

Description

Air suction drainage device

Technical Field

The utility model relates to a device for metal smelting especially relates to a metal smelting changes liquid with drainage device that breathes in.

Background

In the industrial process related to molten metal, a device for transferring molten metal to the next production process is generally required. Taking magnesium metal and magnesium alloy as examples, the transportation and transfer of magnesium liquid are carried out among different furnaces, from furnace to die and production equipment. The magnesium liquid is highly active, the chemical affinity of magnesium, oxygen, water, organic matters and the like is strong, and the magnesium liquid is extremely easy to oxidize, burn and even explode, so the magnesium liquid conveying is one of the key safety technologies. Meanwhile, oxidation and scale cinder caused by improper delivery of the magnesium liquid are involved in the product, so that the quality of the magnesium product is reduced, and even the product is scrapped. Therefore, the magnesium liquid conveying and transferring requirements are stable, safe and anti-oxidation, and the conveying speed, the metal liquid amount, the continuity and the intermittence can be timely controlled.

At present, the magnesium liquid is transferred and conveyed by adopting various methods such as manual ladle scooping, crucible lifting from a furnace and pouring, furnace overturning and pouring, holing at the bottom of the crucible for drainage, siphoning and the like. The siphon pipe has the advantages of sealing, preventing the magnesium liquid from being oxidized during transportation, along with simple and convenient operation and obvious advantages. The most common form of the siphon is a bent pipe, two ends of the bent pipe are respectively inserted into a transferring metal liquid pool and a transferred metal liquid pool to form a communicating vessel, the liquid flows automatically due to pressure difference generated by height difference of liquid levels at two ends of the communicating vessel, the liquid flows from the side with high pressure to the side with low pressure, and the liquid does not stop flowing until the pressures at the two sides are the same. When the siphon is started, the metal liquid is guided to fill the siphon to form a communicating vessel in the suction pipe, and at the beginning of siphon, the liquid in the high liquid level flows out from the pipe orifice at the other end through the bent pipe until the two liquid levels reach the same height.

Although the siphon pipe has many advantages in conveying molten metal, how to drain the siphon pipe is a technical problem to be solved for siphon liquid transfer, such as: the chinese patent with publication number CN206160743U discloses a solution for transferring liquid by using a siphon, but the technology of the patent fails to solve the problem of draining the liquid in the tube when the siphon is started for transferring liquid. Chinese patent application publication No. CN105499523A discloses that a vacuum system is used for suction and drainage, a valve, a proximity switch and a controller are arranged at the front end of the vacuum system, and when liquid metal rises to the proximity valve along a siphon tube, the controller is triggered to send a command for closing the valve to close the valve, so as to prevent the liquid metal from entering the vacuum system. However, since the vacuum system is difficult to handle the pumping rate, there is a risk that the liquid metal will climb at a very fast rate and enter the vacuum system before the valve is completely closed, causing damage to the suction and drainage device and even production accidents.

In view of the above, it is necessary to design a suction drainage device to guide the metal liquid to fill the siphon so as to use the siphon to convey the metal liquid.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the suction drainage device can effectively and reasonably drain metal liquid to fill the siphon and effectively control the drainage rate.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a drainage device breathes in, includes vacuum machine, siphon, connects the pipeline of vacuum machine and siphon, be equipped with the adjustment mechanism who is used for controlling the rate of breathing in on the pipeline, adjustment mechanism includes and links to each other with the vacuum machine and can be sucked into the inside jar of breathing in that is vacuum state and the buffer tank that links to each other with the jar of breathing in by the vacuum machine, and the buffer tank links to each other with the siphon, is provided with the stop valve between vacuum machine and the jar of breathing in, is provided with the adjustable governing valve of aperture between jar of breathing in and the buffer tank.

Further, the suction drainage device further comprises a deaerating device used for driving the siphon and air in the pipeline to be discharged, a branch pipe is arranged between the buffer tank and the siphon on the pipeline, and the branch pipe is connected with the deaerating device.

Further, the oxygen removing device comprises protective gas which does not chemically react with air and a gas storage device which can output the protective gas.

Further, the protective gas is argon gas, and the gas storage device is an argon gas bottle.

Furthermore, the adjusting mechanism further comprises a pressure gauge, and the pressure gauge is connected to a pipeline between the adjusting valve and the buffer tank.

Further, the suction drainage device also comprises a flame-retardant gas for connecting a siphon and preventing the molten metal from being oxidized or combusted.

Further, the flame retardant gas is sulfur hexafluoride.

Furthermore, the siphon is made of conductive materials, and the air suction and drainage device further comprises an alarm device for prompting that the liquid metal rises to the highest point of the siphon along the siphon.

Furthermore, the alarm device comprises a power supply, a conductor contact pin, an alarm and a lead; the conductor contact pin extends into the highest point in the siphon pipe and is close to the pipe wall of the bottom, and an insulator is arranged at the contact part of the conductor contact pin and the siphon pipe; the power supply, the conductor contact pin, the alarm and the lead form a normally open circuit loop.

Further, the alarm is an indicator light.

The utility model discloses a drainage device of breathing in utilizes the air in the jar of breathing in suction siphon that is sucked into inside negative pressure by vacuum apparatus, realizes the drainage of siphon transport metal liquid, compares with prior art, adjustment mechanism can control the speed of breathing in, realizes controlling the process of drainage metal liquid, avoids getting into vacuum apparatus because of the drainage is out of control leads to the metal liquid, leads to breathing in the drainage device and destroys or the emergence of production accident, operation safety. Meanwhile, the device has good overall oxygen removal and isolation performance, thereby effectively preventing pollution and oxidation in the molten metal conveying process and improving the product percent of pass.

Drawings

Fig. 1 is a schematic view of the suction drainage device of the present invention.

Detailed Description

The following describes the embodiments of the present invention with reference to the drawings, and an air suction and drainage device 100 for draining metal liquid during siphon delivery start-up includes a vacuum machine 10, a siphon 20, a pipeline 30 connecting the vacuum machine 10 and the siphon 20, and an adjusting mechanism 40 on the pipeline 30 for controlling air suction rate. The adjusting mechanism 40 comprises an air suction tank 401 connected with the vacuum machine 10 and a buffer tank 402 connected with the air suction tank 401, the air suction tank 401 is a closed container, the interior of the air suction tank 401 can be sucked by the vacuum machine 10 to form negative pressure, the air suction tank 401 with the negative pressure can suck air in the pipeline 30 and the siphon pipe 20 into the air suction tank 401, so that the residual pressure in the siphon pipe 20 is continuously reduced, and the molten metal outside the siphon pipe 20 is sucked into the siphon pipe 20 and gradually ascends until the siphon pipe 20 is filled. A stop valve 60 is arranged between the vacuum machine 10 and the suction tank 401, and when the suction tank 401 is sucked to the required vacuum degree, the vacuum machine 10 can be closed after the stop valve 60 is closed, so that the energy consumption of the operation of the vacuum machine 10 is reduced. The buffer tank 402 is connected with the suction tank 401 and the siphon 20, and plays a role in slowing down the suction speed of the siphon 20 in the air so as to prevent the air in the siphon 20 from being sucked by the suction tank 401 quickly, an adjusting valve 403 with adjustable opening is arranged between the suction tank 401 and the buffer tank 402, and the speed of the suction tank 31 sucking the air in the pipeline 30 and the siphon 20 is controlled by adjusting the opening of the adjusting valve 403, so that the drainage rate of the siphon 20 is controlled.

When the siphon 20 is filled with molten metal, the regulating valve 403 must be closed in time to prevent the molten metal from being sucked into the pipeline 30 and even into the regulating mechanism 40, which causes damage to the equipment, the regulating mechanism 40 further includes a pressure gauge 404, the pressure gauge 404 is connected to the pipeline 30 between the regulating valve 403 and the buffer tank 402, and a person skilled in the art can easily calculate the pressure drop value of the pipeline 30 at the position of the pressure gauge 404 when the siphon 20 is filled with molten metal by calculating the volumes in the siphon 20, the regulating mechanism 40 and the pipeline 30, and determine the time node when the siphon 20 is filled with molten metal according to the pressure drop value displayed by the pressure gauge 404, and close the regulating valve 403 to prevent the molten metal from being sucked into the pipeline 30.

The air suction and drainage device 100 further comprises a deaerating device 70 for discharging air in the siphon tube 20 and the pipeline 30, a branch pipe 301 is arranged on the pipeline 30 at a position between the buffer tank 402 and the siphon tube 20, and the branch pipe 301 is connected with the deaerating device 70. The oxygen removing device 70 comprises a protective gas (not shown) which does not chemically react with air and a gas storage device 701 which can output the protective gas, wherein the protective gas (not shown) is preferably argon gas which is easily available in the market, and the gas storage device 701 is an argon gas bottle.

In order to prevent the transported molten metal from being oxidized or combusted, the air suction and drainage device 100 further comprises a flame retardant gas 80 connected to the siphon 20, wherein the flame retardant gas and the transported molten metal are subjected to chemical reaction to generate a compact compound film on the surface of the molten metal, so that the molten metal is prevented from being oxidized or combusted due to contact with air, and the product quality is improved. Preferably, the flame-retardant gas is sulfur hexafluoride which is easy to find in the market and is low in price.

The siphon tube 20 is made of a conductive material, the air suction drainage device 100 further comprises an alarm device 50 for prompting that molten metal rises to the highest point of the siphon tube along the siphon tube, the alarm device comprises a power supply 501, a conductor contact pin 502, an alarm 503 and a lead wire 504, the conductor contact pin 502 extends into the highest point in the siphon tube 20 and is close to the bottom tube wall, an insulator 505 is arranged at the contact position of the conductor contact pin 502 and the siphon tube 20, and the power supply 501, the conductor contact pin 502, the alarm 503 and the lead wire 504 form a normally open circuit loop. When the molten metal flows through the conductor contact pin 502, the conductive siphon tube 20 is connected with the conductor contact pin 502, the alarm device 50 is connected, and the alarm 503 gives an alarm, wherein the alarm 503 is a common indicator lamp.

Claims

1. The utility model provides a drainage device breathes in, includes vacuum machine, siphon, connects the pipeline of vacuum machine and siphon, its characterized in that, be equipped with the adjustment mechanism who is used for controlling the rate of breathing in on the pipeline, adjustment mechanism includes and links to each other with the vacuum machine and can be sucked into the inside jar of breathing in that is vacuum state and the buffer tank that links to each other with the jar of breathing in by the vacuum machine, and the buffer tank links to each other with the siphon, is provided with the stop valve between vacuum machine and the jar of breathing in, is provided with the adjustable governing valve of aperture between jar of breathing in and the buffer.

2. The inspiratory drainage device according to claim 1, wherein: the air suction and drainage device further comprises a deaerating device used for driving the siphon and air in the pipeline to be discharged, a branch pipe is arranged between the buffer tank and the siphon on the pipeline, and the branch pipe is connected with the deaerating device.

3. The inspiratory drainage device according to claim 2, wherein: the oxygen removing device comprises protective gas which does not chemically react with air and a gas storage device which outputs the protective gas.

4. The inspiratory drainage device according to claim 3, wherein: the protective gas is argon, and the gas storage device is an argon bottle.

5. The inspiratory drainage device according to claim 1, wherein: the adjusting mechanism further comprises a pressure gauge, and the pressure gauge is connected to a pipeline between the adjusting valve and the buffer tank.

6. The inspiratory drainage device according to claim 1, wherein: the air suction and drainage device also comprises flame-retardant gas for preventing the metal liquid from being oxidized or combusted, and the flame-retardant gas is connected into the siphon.

7. The inspiratory drainage device according to claim 6, wherein: the flame-retardant gas is sulfur hexafluoride.

8. The inspiratory drainage device according to claim 1, wherein: the siphon is made of conductive materials, and the air suction drainage device further comprises an alarm device for prompting that liquid metal rises to the highest point of the siphon along the siphon.

9. The inspiratory drainage device according to claim 8, wherein: the alarm device comprises a power supply, a conductor contact pin, an alarm and a lead; the conductor contact pin extends into the highest point in the siphon pipe and is close to the pipe wall of the bottom, and an insulator is arranged at the contact part of the conductor contact pin and the siphon pipe; the power supply, the conductor contact pin, the alarm and the lead form a normally open circuit loop.

10. The inspiratory drainage device according to claim 9, wherein: the alarm is an indicator light.