Electrode blowing dust removal device

Abstract

The utility model discloses an electrode blowing dust removal device which comprises a melting furnace, an electrode bar and a water passing plate which are sequentially arranged from top to bottom, and is characterized by further comprising three groups of blowing devices which are triangularly arranged at the top of the water passing plate, an electric control valve, a gas flowmeter, a gas supply pipe, a gas tank, a controller and an alarm, an air outlet of the air tank is connected with one end of the air supply pipe, the other end of the air supply pipe is connected with one ends of the three electric control valves through the four-way valve, and the other end of each electric control valve is connected with an inlet of one blowing device; a gas flow meter is arranged on an inlet of each blowing device, the signal output end of each gas flow meter is connected with the signal input end of the controller, and the controller is electrically connected with the electric control valve and the alarm. The device has the advantages that the duckbilled nozzles of the three blowing devices blow air to the center of the water passing plate at the same time, an air curtain covering the center is formed in a crossed mode, and dust is effectively isolated and blown away; the air flow is monitored, the air flow is timely adjusted, and the stability of the air flow is ensured.

Description

Technical Field:

[0001] The utility model relates to the field of crucible refining, and particularly relates to an electrode blowing and dust removal device. Background Art:

[0002] When a quartz crucible is refined, the electrode needs to be inserted into the crucible from the top, making the top of the melting furnace open. This will cause electrode ash to enter the crucible, resulting in quality defects of the crucible products.

[0003] Currently, in most melting furnace platforms, a single-head air outlet nozzle form is generally adopted and arranged at the top of the melting furnace to blow out dust. However, the air output of the single-head air outlet nozzle is small and the structure is unstable. While the gas volume in the pipeline is unstable, it seriously affects the gas volume of the air outlet nozzle, resulting in large fluctuations in the gas volume during the production process. The electrode ash still falls into the quartz crucible, affecting the product quality. Content of the Utility Model:

[0004] The purpose of the utility model is to provide an electrode blowing and dust removal device.

[0005] The utility model is implemented by the following technical solutions:

[0006] An electrode blowing and dust removal device includes a melting furnace, an electrode rod, and a water passing plate arranged in sequence from top to bottom. It also includes three blowing devices arranged in a triangular shape on the top of the water passing plate, as well as an electromagnetic control valve, a gas flow meter, a gas supply pipe, a gas tank, a controller, and an alarm;

[0007] The air outlet of the gas tank is connected to one end of the gas supply pipe, and the other end of the gas supply pipe is respectively connected to one end of three electromagnetic control valves through a four-way valve. The other end of each electromagnetic control valve is connected to the inlet of a blowing device;

[0008] Each inlet of the blowing device is provided with the gas flow meter. The signal output end of the gas flow meter is connected to the signal input end of the controller, and the controller is electrically connected to the electromagnetic control valve and the alarm.

[0009] Preferably, the blowing device includes an air inlet pipe, a collecting pipe, a duckbill nozzle, and a bracket. One end of the air inlet pipe is the inlet of the blowing device, and the other end of the air inlet pipe is horizontally and perpendicularly connected to one side of the collecting pipe. Four duckbill nozzles are arranged side by side and at intervals on the other side of the collecting pipe, and both ends of the collecting pipe are closed;

[0010] One end of the bracket is fixed to the water passing plate, and the other end of the bracket clamps the air inlet pipe through a fixed pipe clamp.

[0011] Preferably, an air pump is further included. The inlet of the air pump is connected to the air outlet of the air tank, and the outlet of the air pump is connected to one end of the air supply pipe.

[0012] Preferably, a displacement device is further included. A displacement device is provided below each blowing device. The displacement device includes a track fixed on the water passing plate and a slider slidably arranged on the track. The bottom end of the bracket is fixed to the slider, and a bolt is screwed on the slider, and the end of the bolt abuts against the track; the sliding direction of the slider is the center of the water passing plate.

[0013] Advantages of the present invention: The present invention blows air towards the center of the water passing plate simultaneously through multiple duckbill nozzles of three blowing devices, and the air curtains formed cross to cover the center, with a large air volume, stable structure, effectively isolating and blowing away dust; and by using air flow monitoring, the size of the air flow is adjusted in a timely manner to ensure stable air volume, avoid large fluctuations, and prevent electrode ash from still falling into the quartz crucible, affecting the product quality. Description of the drawings:

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 is a schematic diagram of the structure of the present invention with a displacement device;

[0017] Figure 3 is Figure 2 a partial enlarged schematic diagram of A in

[0018] Figure 4 is a control block diagram of the present invention.

[0019] In the figure: melting furnace 1, electrode rod 2, water passing plate 3, blowing device 4, inlet pipe 4.1, collecting pipe 4.2, duckbill nozzle 4.3, bracket 4.4, electric control valve 5, gas flowmeter 6, air supply pipe 7, air tank 8, controller 9, alarm 10, four-way valve 11, air pump 12, displacement device 13, track 13.1, slider 13.2, bolt 13.3. Specific embodiments:

[0020] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0021] As Figures 1-4 shown, an electrode blowing dust removal device includes a melting furnace 1, an electrode rod 2, and a water passing plate 3 arranged in sequence from top to bottom. There is a through hole in the center of the water passing plate 3, and the through hole corresponds to the furnace mouth of the melting furnace 1 below. The electrode rod 2 descends through the through hole and extends into the melting furnace 1, and the quartz crucible is electrically refined, which is an existing process in this field. It also includes three blowing devices 4 arranged in a triangular shape on the top of the water passing plate 3, as well as an electromagnetic control valve 5, a gas flow meter 6, a gas supply pipe 7, a gas tank 8, a controller 9, and an alarm 10.

[0022] The air outlet of the gas tank 8 is connected to one end of the gas supply pipe 7, and the other end of the gas supply pipe 7 is respectively connected to one end of three electromagnetic control valves 5 through a four-way valve 11. The other end of each electromagnetic control valve 5 is connected to the inlet of a blowing device 4. When all three electromagnetic control valves 5 are opened, the gas supplied by the gas tank 8 enters the three blowing devices 4 through the gas supply pipe 7 and the four-way valve 11 respectively. The three blowing devices 4 blow air towards the center of the water passing plate 3 to form an air curtain, isolating the outside dust and the electrode dust from entering the melting furnace 1 downward, and all are blown away. The angles between the three positions where the three blowing devices 4 are located are designed to be about 120°, and the distance from the edge of the three positions to the electrode rod 2 is 31 cm.

[0023] A gas flow meter 6 is provided at the inlet of each blowing device 4. The signal output end of the gas flow meter 6 is connected to the signal input end of the controller 9. The controller 9 is electrically connected to the electromagnetic control valve 5 and the alarm 10. The controller 9 is selected as a PLC controller, and the alarm 10 is selected as an audible and visual alarm. The upper and lower limit values of the preset gas flow are set. Within this range, the air flow is stable and suitable for purging and dust removal. Each gas flow meter 6 respectively monitors the air flow entering the corresponding blowing device 4 and feeds back the signal to the controller 9. When the air flow is not within the range value, the controller 9 gives a signal to control the opening degree of the corresponding electromagnetic control valve 5. When the air flow is lower than the lower limit value, the opening degree is large and the air flow increases; when it is higher than the upper limit value, the opening degree is small and the air flow decreases. When the air flow recovers, the opening degree can also pre-judge the opening and closing angle value, and when adjusting the opening degree, just turn to the preset angle.

[0024] The blowing device 4 includes an air inlet pipe 4.1, a manifold 4.2, duckbill nozzles 4.3, and a bracket 4.4. One end of the air inlet pipe 4.1 is the inlet of the blowing device 4, and the other end of the air inlet pipe 4.1 is horizontally and perpendicularly connected to one side of the manifold 4.2. Four duckbill nozzles 4.3 are arranged side by side and spaced apart on the other side of the manifold 4.2, and both ends of the manifold 4.2 are closed;

[0025] The air flow entering the blowing device 4 first enters the air inlet pipe 4.1, then enters the manifold 4.2, and finally is ejected from the multiple duckbill nozzles 4.3;

[0026] The duckbill nozzles 4.3 are preferably designed with a length of 6.8 cm and a width of 2 cm at the end of the duckbill. The manifold 4.2 is made of a stainless steel pipe / galvanized pipe with a diameter of 2.5 cm and a length of 20 cm. The air inlet pipe 4.1 is made of stainless steel and preferably has an outer diameter of 1.2 cm;

[0027] One end of the bracket 4.4 is fixed to the water passing plate 3, and the other end of the bracket 4.4 clamps the air inlet pipe 4.1 through a fixed pipe clamp; the height of the bracket 4.4 is preferably 6 cm. If two brackets 4.4 are provided, the distance between the two brackets 4.4 is preferably 10 cm.

[0028] It further includes an air pump 12. The inlet of the air pump 12 is connected to the outlet of the air tank 8, and the outlet of the air pump 12 is connected to one end of the air supply pipe 7. The air pump 12 enhances the pressure of the air flow.

[0029] It further includes a displacement device 13. A displacement device 13 is provided below each blowing device 4. The displacement device 13 includes a track 13.1 fixed to the water passing plate 3 and a slider 13.2 slidably arranged on the track 13.1. The bottom end of the bracket 4.4 is fixed to the slider 13.2, and a bolt 13.3 is screwed onto the slider 13.2. The end of the bolt 13.3 abuts against the track 13.1; the sliding direction of the slider 13.2 is the center of the water passing plate 3. The blowing device 4 slides on the track 13.1 through the slider 13.2 and is locked by the bolt 13.3 to change the distance from the center of the water passing plate 3. The purpose is that when the distance is close, the air curtain area is small, and as the distance gradually becomes farther, the air curtain area increases. By adjusting the size of the air curtain area and finding an appropriate size, it can just cover the through hole in the center of the water passing plate 3.

[0030] Working principle: When the present utility model is in use, the air supplied by the air tank 8 is pressurized by the air pump 12, and then enters the three blowing devices 4 from the air supply pipe 7 and the four-way valve 11 respectively. It successively passes through the air inlet pipe 4.1 and the manifold 4.2, and finally is ejected from the multiple duckbill nozzles 4.3. The three blowing devices 4 blow air towards the through hole in the center of the water passing plate 3 to form an air curtain, isolating the outside dust and the electrode dust from entering the melting furnace 1 downward, and both are blown away.

[0031] The upper and lower limit values of the preset gas flow rate are within this range, where the air flow pressure is stable and suitable for purging and dust removal. Each gas flowmeter 6 monitors the gas flow rate entering the corresponding blowing device 4 and feeds back the signal to the controller 9. When the gas flow rate is not within the range value, the controller 9 gives a signal to control the opening degree of the corresponding electromagnetic control valve 5 to adjust the gas flow rate back to normal.

[0032] In this new type, multiple duckbill nozzles 4.3 of three blowing devices 4 blow air towards the center of the water passing plate 3 simultaneously, crossing to form a wind curtain covering the center. It has a large air volume, a stable structure, and can effectively isolate and blow away dust. Moreover, by monitoring the gas flow rate, the size of the gas flow rate is adjusted in a timely manner to ensure the stability of the gas volume, avoid large fluctuations, prevent electrode ash from still falling into the quartz crucible, and affect the product quality.

[0033] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An electrode blowing and dust removal device, comprising a melting furnace, an electrode rod and a water plate arranged in sequence from top to bottom, characterized in that: It also includes three sets of blowing devices arranged in a triangular shape on the top of the water-passing plate, as well as an electric control valve, a gas flow meter, a gas supply pipe, a gas tank, a controller, and an alarm; The gas outlet of the gas tank is connected to one end of the gas supply pipe, the other end of the gas supply pipe is connected to one end of the three electric control valves through a four-way valve, and the other end of each electric control valve is connected to the inlet of one of the blowing devices; The gas flow meter is provided on the inlet of each blowing device, the signal output end of the gas flow meter is connected to the signal input end of the controller, and the controller is electrically connected to the electric control valve and the alarm.

2. The electrode blowing dust removal device according to claim 1, characterized in that: The blowing device comprises an air intake pipe, an air collecting pipe, a duckbill nozzle, and a bracket. One end of the air intake pipe is the inlet of the blowing device, and the other end of the air intake pipe is horizontally and vertically connected with one side of the air collecting pipe. Four duckbill nozzles are arranged side by side at intervals on the other side of the air collecting pipe, and both ends of the air collecting pipe are closed. The bottom end of the bracket is fixed to the water-passing plate, and the top end of the bracket clamps the air inlet pipe via a fixed pipe clamp.

3. The electrode blowing dust removal device according to claim 2, characterized in that: It also includes an air pump, the inlet of the air pump is connected to the air outlet of the air tank, and the outlet of the air pump is connected to one end of the air supply pipe.

4. The electrode blowing dust removal device according to claim 3, characterized in that: It also includes a displacement device, and each of the blowing devices is provided with a displacement device below. The displacement device includes a track fixed on the water-passing plate, and a slider slidably arranged on the track. The bottom end of the bracket is fixed to the slider, and a bolt is screwed on the slider, and the end of the bolt abuts against the track; the sliding direction of the slider is the center of the water-passing plate.

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