CN217757542U

CN217757542U - Simple casting liquid purifying equipment

Info

Publication number: CN217757542U
Application number: CN202220584613.4U
Authority: CN
Inventors: 周正; 赵四勇; 田辉
Original assignee: Guangxi Fuchuan Zhenghui Machinery Co ltd
Current assignee: Guangxi Fuchuan Zhenghui Machinery Co ltd
Priority date: 2022-03-17
Filing date: 2022-03-17
Publication date: 2022-11-08
Anticipated expiration: 2032-03-17

Abstract

The utility model discloses a simple pouring liquid purifying device, which comprises a furnace body, a furnace lining, air bricks, a base, a feeding pipe, an air supply device and a discharging device; the furnace body is arranged on the base, and a furnace lining is arranged on the inner wall of the furnace body; the upper part, the middle part and the lower part of the inner wall of the furnace lining are respectively provided with a group of conductivity sensors; the bottom of the furnace lining is provided with air bricks; the feeding pipe is arranged at the top end of the furnace body; the air supply device comprises an air inlet pipe and an air storage tank; one end of the air inlet pipe is connected with the air brick, and the other end of the air inlet pipe is connected with the air storage tank; the discharging device comprises a discharging channel, a lifting rod and a lifting device; the discharge channel is arranged at the bottom of the furnace body; the lifting rod is vertically arranged in the furnace body, the lower end of the lifting rod extends downwards to an opening at the upper end of the discharging channel, and a lifting device is arranged at the upper end of the lifting rod. The utility model discloses can guarantee equipment and operating personnel's safety and the normal operating of whole furnace body to can accurately judge according to molten steel and slag conductivity and purify the terminal point, in time discharge the pouring liquid and the surplus residue after will purifying.

Description

Simple casting liquid purifying equipment

Technical Field

The utility model relates to a cast iron equipment field, concretely relates to simple and easy pouring liquid clarification plant.

Background

During the smelting process, due to the action of air suction, oxidation and the like, a certain amount of oxides, nonmetallic inclusions, harmful gases and the like exist in the casting liquid, and the components of the casting liquid are oxidized and lost. The purity degree of the casting liquid directly influences the quality of the casting, and the content of impurities such as oxides, inclusions, gas and the like in the casting liquid directly influences the material performance of the casting. In order to ensure that the casting liquid forms a casting in a pure state, in addition to refining and purification in a smelting furnace, in the process of pouring the casting liquid into a furnace body, harmful effects such as slag inclusion, gas inclusion, oxidation and the like can occur, and in order to ensure that the high-chromium casting liquid forms a casting in a pure state, the furnace body is necessary to be improved, and the molten high-chromium casting liquid is refined and purified to achieve the casting liquid purification effect. The prior general method for purifying the casting liquid in the furnace body has the following defects: 1. in the aspect of large-scale and continuous casting, a tundish is adopted for external refining, and the method is not suitable for the production of various small-batch castings, and has high energy consumption and large occupied area; 2. the traditional method mostly adopts a method of passively standing pouring liquid in a ladle, steel slag and oxides in the pouring liquid automatically float upwards through density difference, gas floats upwards after forming enough pressure through polymerization, and the purifying effect of the pouring liquid is not ideal; 3. the method of oxygen blowing through an inserted tube in a furnace body has the defects of influence on chemical components in the casting liquid, increase of oxides, inconvenience in operation and the like; 4. the casting liquid is easy to splash out of the casting equipment to hurt people due to the lack of a safety structure; 5. after purification is finished, pouring liquid and residual residues are not thoroughly removed, and the subsequent working progress is influenced; 6. the adopted purified gas is not recycled in time, so that resource waste is caused; 7. in the operation, the purification end point is judged by manual observation, so that errors exist and production is delayed.

SUMMERY OF THE UTILITY MODEL

The utility model provides a simple casting liquid purifying device aiming at the technical problems, the air brick is reasonably arranged at the bottom of the furnace body, and the inert pressure gas is injected, so that the impurities such as steel slag, oxide and the like in the casting liquid can be quickly floated, the purification is sufficient, the oxidation and the loss of the components of the casting liquid can be effectively avoided, and the energy conservation and the efficiency improvement can be facilitated; the device is provided with a discharging device, a slag discharging device and a conductivity sensor, and can accurately judge the content of the steel slag in the tapping water according to the difference of the conductivity of the molten steel and the conductivity of the steel slag, so as to accurately judge the purification end point, and discharge the purified pouring liquid and the residual slag out of the furnace body in time.

In order to realize the purpose, the utility model adopts the following technical scheme:

a simple casting liquid purifying device comprises a furnace body, a furnace lining, air bricks, a base, a feeding pipe, an air supply device and a discharging device; the furnace body is vertically arranged on the base, and a furnace lining is arranged on the inner wall of the furnace body; the upper part, the middle part and the lower part of the inner wall of the furnace lining are respectively provided with a group of conductivity sensors; the middle position of the bottom of the furnace lining is provided with an air brick, the upper end surface of the air brick is communicated with the hearth, and the lower end surface of the air brick is fixedly connected with the base; the feeding pipe is arranged at the edge of the top end of the furnace body, and the lower end of the feeding pipe is communicated with the hearth;

the gas supply device comprises a gas inlet pipe and a gas storage tank; one end of the air inlet pipe penetrates through the base to be connected with the air brick so as to supply air to the furnace body; the other end is connected with the upper end of the gas storage tank;

the discharging device comprises a discharging channel, a lifting rod and a lifting device; the discharging channel is arranged at the bottom of the furnace body, the upper end of the discharging channel is communicated with the hearth, and the lower end of the discharging channel is externally connected with a pipeline; the lifting rod is vertically arranged in the furnace body, the bottom of the lifting rod is of a conical structure, and an opening at the upper end of the discharging channel can be blocked; the upper end of the lifting rod penetrates out of the furnace top and is connected with a lifting device; the lifting device can vertically lift or put down the lifting rod.

Further, the device also comprises a cover plate; the cover plate is arranged at an opening at the upper end of the feeding pipe, and the cover plate is movably hinged with the lower side edge of the opening of the feeding pipe, so that the cover plate can be opened or closed.

Furthermore, an included angle of 10-60 degrees is formed between the feed pipe and the horizontal plane.

Furthermore, the cover plate is provided with a sealing strip at one end contacted with the feeding pipe, and the cover plate can be closely contacted with the feeding pipe through the sealing strip when being opened.

Further, the device also comprises a gas recovery device, wherein the gas recovery device comprises a gas outlet pipe and a gas recovery pipe; the air outlet pipe is arranged at the edge of the top end of the furnace body; one end of the gas recovery pipe is connected with the gas outlet pipe, the other end of the gas recovery pipe is connected with the bottom of the gas storage tank, and gas is recovered and recycled.

The slag discharging device comprises a pump, a slag discharging pipe and a waste residue collecting box, wherein one end of the slag discharging pipe is connected with the bottom of the hearth, and the other end of the slag discharging pipe extends outwards and then is connected with the pump; the waste residue collecting box is connected with the pump through a pipeline to collect waste residues.

Furthermore, the lifting device is an electric lifting device or a manual lifting device.

Furthermore, the air inlet pipe is connected with the air inlet pipe through a movable joint, and the movable joint is fixed on the base.

The utility model discloses a working process does:

before pouring the casting liquid into the furnace body from the smelting furnace, the lower end of the lifting rod blocks the discharging channel; starting a gas supply device, pre-applying small flow and pressure, and feeding inert gas into a hearth through a gas inlet pipe and a gas permeable brick, and returning the inert gas to a gas storage tank through a gas outlet pipe and a gas recovery pipe; the cover plate is opened, and the cover plate is in close contact with the feeding pipe through the sealing strip, so that the function of a baffle plate is realized, and high-temperature pouring liquid can be prevented from dripping from a gap between the feeding pipe and the cover plate and causing damage to equipment or personnel; after pouring liquid is poured from the feeding pipe, the cover plate is covered, the flow and pressure of the introduced inert gas are adjusted along with the increase of the pouring liquid amount, and the inert gas is injected, so that the impurities such as steel slag, oxide and the like in the small piece of pouring liquid can quickly float upwards, the effect of full purification is achieved, and the oxidation and loss of the components of the pouring liquid are effectively avoided; and a conductivity sensor in the furnace body 1 detects the conductivity of the pouring liquid in real time. The conductivity sensor comprises a primary coil and a secondary coil, eddy currents can be generated when molten steel passes through the coils connected with alternating current, the eddy currents can change the strength of a magnetic field, the conductivity of slag is obviously lower than that of the molten steel and is only one thousandth of that of the molten steel, if a small amount of slag is contained in the molten steel, the eddy currents can be weakened, the magnetic field can be enhanced, and the change of the magnetic field strength can be detected through voltage generated by the secondary coil. After the low-voltage signal is amplified, the amount of the slag can be displayed. When the slag amount is zero or less, the purification of the casting liquid is finished; after the purification of the pouring liquid is finished, the lifting rod is lifted through the lifting device, a gap is formed between a conical body structure at the bottom of the lifting rod and the discharging channel, the hearth is communicated with the discharging channel, the pouring liquid is discharged out of the furnace body, and residues are left in the furnace body; and after the pouring liquid is discharged, starting a pump to pump the residues into the waste residue collection box.

Compared with the prior art, the utility model beneficial effect:

1. the utility model discloses simple structure, convenient operation rationally sets up air brick and air brick in the furnace body bottom, through pouring into inert pressure gas, helps impurities such as slag in the pouring liquid, oxides come up rapidly, purifies fully and effectively avoids the oxidation of pouring liquid composition and loss, helps energy-conserving increase of efficiency, and is safe practical.

2. The utility model is provided with the discharging device, the lifting rod is controlled by adopting an electric or manual operation mode outside the furnace, the purified pouring liquid can be discharged out of the furnace body, and the residue is remained in the furnace body, thereby the utility model has the advantages of safety, high efficiency and high practicability; the furnace body is internally provided with a conductivity sensor which can accurately judge the content of the steel slag in the tapping water according to the different conductivities of the molten steel and the steel slag, thereby accurately judging the purification end point; be equipped with gas recovery pipe, can retrieve gas and carry out cyclic utilization, can reduce furnace internal gas pressure on the one hand, reduce the explosion risk, on the other hand can retrieve gas, causes the wasting of resources.

3. The utility model discloses set up the feed arrangement in the furnace body upper end, can avoid the high-temperature liquid that a large amount of feeding arouses to splash, set up the apron on the inlet pipe, can be as the baffle when it is opened, prevent high-temperature liquid from dripping, avoid the danger of being burnt by the casting liquid in operating personnel's operation process, also play the shelter from the guard action to equipment simultaneously; one side of apron is equipped with the sealing strip for in close contact with between apron and the inlet pipe further ensures the security.

4. The utility model discloses a form certain angle between inlet pipe and the horizontal plane, have certain cushioning effect to the pouring liquid, further reduce the risk that liquid splashes and injures the people.

Drawings

FIG. 1 is a schematic structural view of the present invention;

the numbers and names in the figure are as follows:

1-furnace body; 2-furnace lining; 3-a gas storage tank; 4-air brick; 5-a base; 6, an air inlet pipe; 7-a feed pipe; 8-cover plate; 9-sealing strips; 10-a discharge channel; 11-lifting rod; 12-a pump; 13-a slag discharge pipe; 14-a waste residue collection box; 15-a lifting device; 16-an air outlet pipe; 17-a gas recovery tube; 18-a loose joint; 19-conductivity sensor.

Detailed Description

In the following, an embodiment of the present invention will be described in detail with reference to the drawings, but it should be understood that the scope of the present invention is not limited by the embodiment. It should be understood that the directions "up", "down", "left" and "right" in the following embodiments of the present invention are all based on the position of the corresponding drawing. These directional terms are used for convenience of description only and do not represent limitations on the particular embodiments of the present invention. Unless otherwise specified, like reference numerals in the reference numerals refer to like structures.

As shown in figure 1, the simple pouring liquid purification equipment comprises a furnace body 1, a furnace lining 2, air bricks 4, a base 5, a feeding pipe 7, an air supply device and a discharging device; the furnace body 1 is vertically arranged on the base 5, and a furnace lining 2 is arranged on the inner wall of the furnace body 1; the upper part, the middle part and the lower part of the inner wall of the furnace lining 2 are respectively provided with a group of conductivity sensors 19; the middle position of the bottom of the furnace lining 2 is provided with an air brick 4, the upper end surface of the air brick 4 is communicated with the hearth, and the lower end surface is fixedly connected with a base 5; the feeding pipe 7 is arranged at the edge of the top end of the furnace body 1, and the lower end of the feeding pipe 7 is communicated with the hearth;

the gas supply device comprises a gas inlet pipe 6 and a gas storage tank 3; one end of the air inlet pipe 6 penetrates through the base 5 to be connected with the air brick 4 to supply air for the furnace body 1; the other end is connected with the upper end of the gas storage tank 3;

the discharging device comprises a discharging channel 10, a lifting rod 11 and a lifting device 15; the discharge channel 10 is arranged at the bottom of the furnace body 1, the upper end of the discharge channel 10 is communicated with the hearth, and the lower end is externally connected with a pipeline; the lifting rod 11 is vertically arranged in the furnace body 1, the bottom of the lifting rod is of a conical structure, and an opening at the upper end of the discharge channel 10 can be blocked; the upper end of the lifting rod 11 penetrates out of the furnace top and is connected with a lifting device 15; the lifting device 15 is a conventional electric lifting device and can vertically lift or put down the lifting rod 11.

Also comprises a cover plate 8; the cover plate 8 is arranged at the opening at the upper end of the feeding pipe 7, and the cover plate 8 is movably hinged with the lower side edge of the opening of the feeding pipe 7, so that the cover plate 8 can be opened or closed.

The feed pipe 7 and the horizontal plane form an included angle of 30 degrees.

Apron 8 one of being equipped with sealing strip 9 with the contact of inlet pipe 7, apron 8 can be through in close contact with between sealing strip 9 and the inlet pipe 7 when opening.

The device also comprises a gas recovery device, wherein the gas recovery device comprises a gas outlet pipe 16 and a gas recovery pipe 17; the air outlet pipe 16 is arranged at the edge of the top end of the furnace body 1; one end of the gas recovery pipe 17 is connected with the gas outlet pipe 16, and the other end is connected with the bottom of the gas storage tank 3, so that gas is recovered and recycled.

The slag discharging device comprises a pump 12, a slag discharging pipe 13 and a waste residue collecting box 14, wherein one end of the slag discharging pipe 13 is connected with the bottom of the hearth, and the other end of the slag discharging pipe extends outwards and then is connected with the pump 12; the waste residue collection box 14 is connected with the pump 12 through a pipeline to collect waste residue.

The air inlet pipe is characterized by further comprising a movable joint 18, wherein the movable joint 18 is connected with the air inlet pipe 4 and is fixed on the base 5.

The utility model discloses a working process does:

before pouring the pouring liquid into the furnace body 1 from the smelting furnace, the lower end of the lifting rod 11 blocks the discharging channel 10; starting a gas supply device, pre-applying small flow and pressure, feeding inert gas into a hearth through a gas inlet pipe 6 and a gas permeable brick 4, and returning the inert gas to a gas storage tank 3 through a gas outlet pipe 16 and a gas recovery pipe 17; the cover plate 8 is opened, the cover plate 8 is in close contact with the feeding pipe 7 through the sealing strip 9, the function of a baffle plate is achieved, and high-temperature pouring liquid can be prevented from dripping from a gap between the feeding pipe 7 and the cover plate 8 to cause damage to equipment or personnel; after pouring liquid is poured into the pouring device from the feeding pipe 7, the cover plate 8 is covered, the flow and pressure of inert gas are adjusted along with the increase of the pouring liquid amount, and the inert gas is injected, so that impurities such as steel slag, oxides and the like in the small pouring liquid can quickly float upwards, the effect of full purification is achieved, and the oxidation and loss of components of the pouring liquid are effectively avoided; and a conductivity sensor 19 in the furnace body 1 detects the conductivity of the pouring liquid in real time. The conductivity sensor 19 comprises a primary coil and a secondary coil, when the molten steel passes through the coils connected with alternating current, eddy currents can be generated, the strength of a magnetic field can be changed by the eddy currents, the conductivity of slag is obviously lower than that of the molten steel and is only one thousandth of that of the molten steel, if a small amount of slag is contained in the molten steel, the eddy currents can be weakened, the magnetic field can be strengthened, and the change of the magnetic field strength can be detected through voltage generated by the secondary coil. After the low-voltage signal is amplified, the amount of the slag can be displayed. When the slag amount is zero or less, the purification of the casting liquid is finished; after the purification of the casting liquid is finished, the lifting rod 11 is lifted through the lifting device 15, a gap is formed between the conical body structure at the bottom of the lifting rod 11 and the discharging channel 10, so that the hearth is communicated with the discharging channel 10, the casting liquid is discharged out of the furnace body 1, and residues are left in the furnace body 1; after the pouring liquid is discharged, the suction pump 12 is started to suck the residues into the waste residue collection box 14.

The above-mentioned embodiments are only described in the preferred embodiments of the present invention, but not limited to the scope of the present invention, and various modifications and improvements made by the technical solutions of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.

Claims

1. The utility model provides a simple and easy pouring liquid clarification plant, includes furnace body (1), furnace lining (2), air brick (4), base (5), inlet pipe (7), air feeder, discharging device, its characterized in that:

the furnace body (1) is vertically arranged on the base (5), and a furnace lining (2) is arranged on the inner wall of the furnace body (1); the upper part, the middle part and the lower part of the inner wall of the furnace lining (2) are respectively provided with a group of conductivity sensors (19); the middle position of the bottom of the furnace lining (2) is provided with a gas permeable brick (4), the upper end surface of the gas permeable brick (4) is communicated with the hearth, and the lower end surface is fixedly connected with the base (5); the feeding pipe (7) is arranged at the edge of the top end of the furnace body (1), and the lower end of the feeding pipe (7) is communicated with the hearth;

the gas supply device comprises a gas inlet pipe (6) and a gas storage tank (3); one end of the air inlet pipe (6) penetrates through the base (5) to be connected with the air brick (4) to supply air to the furnace body (1); the other end is connected with the upper end of the gas storage tank (3);

the discharging device comprises a discharging channel (10), a lifting rod (11) and a lifting device (15); the discharge channel (10) is arranged at the bottom of the furnace body (1), the upper end of the discharge channel (10) is communicated with the hearth, and the lower end of the discharge channel is externally connected with a pipeline; the lifting rod (11) is vertically arranged in the furnace body (1), the bottom of the lifting rod is of a conical structure, and an opening at the upper end of the discharging channel (10) can be blocked; the upper end of the lifting rod (11) penetrates out of the furnace top and is connected with a lifting device (15); the lifting device (15) can vertically lift or lower the lifting rod (11).

2. The simple pouring liquid purification device according to claim 1, wherein: also comprises a cover plate (8); apron (8) locate inlet pipe (7) upper end opening part, swing joint between apron (8) and inlet pipe (7) opening part downside edge for apron (8) can be opened or close.

3. The simple pouring liquid purification device according to claim 1, wherein: the feed pipe (7) and the horizontal plane form an included angle of 10-60 degrees.

4. The simple pouring liquid purification device according to claim 2, wherein: apron (8) and one of inlet pipe (7) contact serve and be equipped with sealing strip (9), can be through in close contact between sealing strip (9) and inlet pipe (7) when apron (8) are opened.

5. The simple pouring liquid purification device according to claim 1, wherein: the device also comprises a gas recovery device, wherein the gas recovery device comprises a gas outlet pipe (16) and a gas recovery pipe (17); the air outlet pipe (16) is arranged at the edge of the top end of the furnace body (1); one end of the gas recovery pipe (17) is connected with the gas outlet pipe (16), and the other end is connected with the bottom of the gas storage tank (3) to recover and recycle gas.

6. The simple pouring liquid purification device according to claim 1, wherein: the slag discharging device comprises a pump (12), a slag discharging pipe (13) and a waste residue collecting box (14), wherein one end of the slag discharging pipe (13) is connected with the bottom of the hearth, and the other end of the slag discharging pipe extends outwards and then is connected with the pump (12); the waste residue collection box (14) is connected with the suction pump (12) through a pipeline to collect waste residue.

7. The simple pouring liquid purification device according to claim 1, wherein: the lifting device (15) is an electric lifting device or a manual lifting device.

8. The simple pouring liquid purification device according to claim 1, wherein: the air inlet pipe is characterized by further comprising a movable joint (18), wherein the movable joint (18) is connected with the air inlet pipe (6) and fixed on the base (5).