Zinc powder automatic feeding system capable of collecting dust

Abstract

The utility model discloses an automatic zinc powder feeding system capable of collecting dust, which comprises an electric furnace body and a feeding system, and the feeding system is arranged on the right side of the electric furnace body and is in telecommunication connection with a controller of the electric furnace body; the feeding system further comprises a negative pressure conveying device, a spiral conveyor and a feeding gate set, the negative pressure conveying device capable of preventing flying dust generated during feeding is arranged on the right side of the spiral conveyor, and the feeding gate set capable of preventing high-temperature furnace gas from flowing back and preventing dust pollution is arranged below the left side of the spiral conveyor. According to the utility model, negative pressure conveying is adopted, dust diffusion pollution is completely eradicated from the source, and stable feeding can be realized; a feeding structure is improved, and scalding accidents and dust pollution caused by escaping of high-temperature airflow in the furnace are prevented; the novel gate structure is adopted, the problem that the sealing performance is reduced due to long-time use of the valve is solved, the service life of the device is prolonged, and the reliability is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to zinc powder smelting technical field, especially relate to a zinc powder automatic feeding system of dust collection. BACKGROUND

[0002] The zinc smelting by electric furnace is the method that zinc powder raw materials are put into the electric furnace to electrolyze zinc powder into zinc vapor condensation and extract metal zinc, generally by the storage hopper to the electric furnace zinc powder raw materials.

[0003] The prior art discloses an automatic feeding electric zinc furnace for zinc powder production in Chinese patent (CN213454949U), belongs to electric furnace zinc smelting device field, including furnace body, furnace cover, cathode, anode and feed inlet, be equipped with furnace cover on the furnace body, and be equipped with the cathode that extends to the inside of furnace cover, and the inner bottom of furnace body is equipped with anode, the feed inlet is set up on the furnace cover, the feed inlet is equipped with feed groove, and the left side of feed groove is rotatably connected with the downwardly inclinedly arranged conveying chute through the hinge seat, and the inside of conveying chute is hollow and the bottom end is open, the lower end of conveying chute is equipped with the air cylinder that supports it, and the telescopic end of air cylinder is rotatably connected with the outer side wall of conveying chute through another hinge seat.

[0004] This mode has the following defects: one, the inlet of conveyor will cause zinc powder to be raised, causing dust diffusion pollution, two, when feeding, the hot gas in the furnace will carry zinc powder backflow, and blow up the zinc powder in the conveyor, causing dust diffusion pollution, and the high-temperature gas escaping has the risk of causing the operator to be scalded, three, the bottom surface of telescopic gate is easy to condense zinc dust in the long-term exposure in the furnace environment, causing the sealing property of gate to reduce, increase friction resistance, reduce the service life of device.

[0005] Therefore, the present application provides a zinc powder automatic feeding system with dust collection. Utility model content

[0006] To solve the above technical problems, the utility model discloses a zinc powder automatic feeding system with dust collection, the device adopts negative pressure conveying, which can prevent dust diffusion pollution from the source and stabilize the feeding, improve the feeding structure to prevent the high-temperature gas in the furnace from escaping and causing scalding accidents and dust pollution, adopt a new gate structure to solve the problem of reduced sealing property of the valve after long-term use, prolong the service life of the device and improve the reliability.

[0007] In order to achieve the above technical effects, the utility model provides a zinc powder automatic feeding system of dust collection, including electric furnace body, feeding system, feeding system setting in electric furnace body right side with electric furnace body's controller electric connection, the feeding system still include negative pressure conveying device, screw conveyer, feeding gate group, can prevent the negative pressure conveying device of feeding dust generation setting in the right side of screw conveyer, can prevent the feeding gate group of high temperature furnace backflow and prevent dust pollution setting in screw conveyer left side below.

[0008] As preferred, the negative pressure conveying device further comprises a fan, a feeding pipe and a material collecting cylinder, the fan providing power for the pipeline is arranged on the right side of the feeding pipe and connected with the feeding pipe through a conveying pipeline, and the material collecting cylinder is arranged on the left side of the feeding pipe and connected with the feeding pipe through the conveying pipeline.

[0009] As preferred, the conveying pipeline is further provided with a powder flow meter.

[0010] As preferred, the feeding pipe further comprises an extendable pipeline and a pipeline joint, the pipeline joint capable of being disassembled and changed according to the working condition is arranged at the front end of the extendable pipeline which can be extended and bent.

[0011] As preferred, the material collecting cylinder further comprises a cylinder body, a collecting hopper, a mounting plate, a material blocking plate and a spring, the cylinder body is arranged in the middle and connected with the side surface of the conveying pipeline at the rear part of the cylinder body, the collecting hopper with a conical structure is arranged below the cylinder body, the mounting plate is arranged below the top of the cylinder body and connected with the top of the cylinder body through the spring, and the material blocking plate is circumferentially arranged below the mounting plate along the material input direction.

[0012] As preferred, the feeding gate group further comprises an electric flap gate a, a storage cavity and an electric flap gate b, the electric flap gate a is arranged above the storage cavity, and the electric flap gate b is arranged below the storage cavity.

[0013] As preferred, the gate plate of the electric flap gate a is arranged in a trapezoidal structure on both sides and provided with a sealing strip on the side surface.

[0014] As preferred, the gate plate of the electric flap gate b is arranged in a trapezoidal structure on both sides and provided with a sealing strip on the side surface.

[0015] Compared with the prior art, the utility model has the beneficial effects as follows:

[0016] The device adopts negative pressure conveying device and screw conveyor combination feeding, and the negative pressure conveying eliminates dust diffusion pollution from the source of feeding, and the screw conveyor guarantees stable feeding of the material to the electric furnace; the feeding gate group is set to isolate the internal environment of the electric furnace and the internal environment of the screw conveyor, and the high-temperature gas in the furnace is prevented from escaping to cause scalding accidents and dust pollution through indirect feeding, thereby improving the safety of the device; the sealing installation of the flap valve reduces the area of the gate sealing performance affected by the bottom long-term attachment of zinc metal vapor in the electric furnace, prolongs the service life of the device, and improves the reliability. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a front view of the utility model;

[0018] Figure 2 is a schematic view of the internal structure of the utility model;

[0019] Figure 3 is Figure 2 a partial schematic view of a;

[0020] Figure 4 is Figure 2 a partial schematic view of b;

[0021] Figure 5 is a schematic view of the internal structure of the feeding valve group in the utility model;

[0022] In the drawings, the components represented by each reference numeral are listed as follows:

[0023] 1, electric furnace body; 2, screw conveyor; 3, feeding gate group; 4, fan; 5, feeding pipe; 6, material collecting cylinder; 7, powder flow meter; 8, telescopic pipe; 9, pipe joint; 10, cylinder body; 11, collecting hopper; 12, mounting plate; 13, material blocking plate; 14, spring; 15, electric flap gate a; 16, storage cavity; 17, electric flap gate b; 18, gate plate. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] As Figures 1 to 5As shown, in the prior art of the present embodiment, the following problems exist: the inventors found that the prior art has the following defects: 1. The inlet of the conveyor can cause zinc powder to be raised, causing dust to spread and pollute; 2. When feeding, the hot gas in the furnace can carry zinc powder backflow and blow the zinc powder in the conveyor, causing dust to spread and pollute, and the high-temperature gas escaping poses a risk of scalding to workers; 3. The bottom surface of the telescopic gate is easily condensed with zinc dust after being exposed to the furnace environment for a long time, which reduces the sealing performance of the gate, increases the friction resistance, and reduces the service life of the device;

[0026] Therefore, the inventors provide an automatic zinc powder feeding system with dust collection, which comprises an electric furnace body 1, a feeding system, the feeding system is arranged on the right side of the electric furnace body 1 and is electrically connected with the controller of the electric furnace body 1; the feeding system further comprises a negative pressure conveying device, a screw conveyor 2, and a feeding gate group 3; the negative pressure conveying device that can prevent dust from being generated during feeding is arranged on the right side of the screw conveyor 2; the feeding gate group 3 that can prevent high-temperature furnace gas from backflowing and prevent dust pollution is arranged below the left side of the screw conveyor 2.

[0027] With the above scheme, the zinc powder is sucked, conveyed, and collected to the feeding port of the screw conveyor 2 by the negative pressure conveying device, and then lifted and conveyed to the feeding port of the electric furnace by the screw conveyor 2, during which the pipeline is closed and powered by the fan 4 for negative pressure conveying, thus eliminating dust spread and pollution from the source of feeding, and ensuring stable conveying of the material to the electric furnace through the screw conveyor 2; After the material is conveyed to the feeding gate group 3, the material reaches the preset volume under the monitoring of the powder flow meter 7, the electric flap valve a15 is automatically opened, the material is sent into the storage cavity 16 between the two valves, then the electric flap valve a15 is closed, the electric flap valve b17 is opened, the material in the storage cavity 16 is sent into the electric furnace for smelting, the feeding gate group 3 isolates the internal environment of the electric furnace from the internal environment of the screw conveyor 2, and prevents high-temperature gas from escaping from the furnace to cause scalding accidents and dust pollution through indirect feeding; The sealingly installed flap valve reduces the area of the gate plate 18 that is affected by the zinc metal vapor in the electric furnace for a long time, thereby reducing the sealing performance of the gate, prolonging the service life of the device, and improving the reliability.

[0028] Further, the negative pressure conveying device further comprises a fan 4, a feeding pipe 5, and a material collecting cylinder 6; the fan 4 that provides power for the pipeline is arranged on the right side of the feeding pipe 5 and connected with the feeding pipe 5 through a conveying pipeline; the material collecting cylinder 6 is arranged on the left side of the feeding pipe 5 and connected with the feeding pipe 5 through a conveying pipeline;

[0029] The fan 4 provides power for the conveying pipeline, and a Roots fan can be selected in the embodiment. The fan 4 generates negative pressure in the feeding pipe 5 to suck the zinc powder into the conveying pipeline. The conveying pipeline conveys the material to the material collecting cylinder 6 for collection. The collected material falls into the inlet of the screw conveyor 2, completing the first-stage conveying of the material. In the process, the feeding inlet does not generate additional dust pollution due to the negative pressure suction and conveying of the pipeline.

[0030] Further, the conveying pipeline is provided with a powder flow meter 7.

[0031] The powder flow meter 7 can monitor the powder flow conveyed by the conveying pipeline and transmit a signal to the controller of the electric furnace body 1. The controller can calculate the volume of the material conveyed to the upper part of the screw conveyor 2 according to the powder flow and control the feeding valve group to feed the material into the electric furnace according to the set value.

[0032] Further, the feeding pipe 5 further includes an extendable pipeline 8 and a pipeline joint 9. The pipeline joint 9 can be set at the front end of the extendable pipeline 8 according to the working conditions and can be disassembled and changed.

[0033] The extendable pipeline 8 can cooperate with the conical pipeline joint shown in the figure to suck and feed the stacked zinc powder. The extendable pipeline 8 facilitates the control of the feeding pipe 5 by the operator. The pipeline joint 9 can also be replaced by an interface structure (not shown in the figure) to suck the material from the lower part of the zinc powder storage bin.

[0034] Further, the material collecting cylinder 6 further includes a cylinder body 10, a collecting hopper 11, a mounting plate 12, a material blocking plate 13, and a spring 14. The cylinder body 10 is arranged at the middle part and connected to the side of the conveying pipeline at the rear part of the cylinder body 10. The conical collecting hopper 11 is arranged below the cylinder body 10. The mounting plate 12 is arranged below the top of the cylinder body 10 and connected to the top of the cylinder body 10 through the spring 14. The material blocking plate 13 is arranged below the mounting plate 12 along the circumferential direction of the material input direction.

[0035] The conveying pipeline conveys the material from the side of the cylinder body 10. The material falls downward along the inner wall of the cylinder body 10 under the action of inertia and gravity. Part of the material is blocked by the material blocking plate 13. The spring 14 between the mounting plate 12 and the top of the cylinder body 10 is deformed and vibrates due to the impact of the material, so that the blocked material is shaken off to the collecting hopper 11 below. The falling material is collected by the collecting hopper 11 and slides through the pipeline to the inlet of the screw conveyor 2. The material collecting hopper 11 plays a role in collecting the material and reducing the kinetic energy of the material, and cooperates with the screw conveyor 2 to achieve the effect of stable feeding of the electric furnace.

[0036] Further, the feeding gate group 3 further comprises an electric flap gate a15, a storage cavity 16, and an electric flap gate b17, the electric flap gate a15 is arranged above the storage cavity 16, and the electric flap gate b17 is arranged below the storage cavity 16;

[0037] In the normal state, the electric flap gate a15 and the electric flap gate b17 are closed, the material falls into the pipeline above the electric flap gate a15 after being lifted by the screw conveyor 2, the flow signal transmitted by the powder flow meter 7 is transmitted to the controller of the electric furnace body 1, and after conversion, the controller reaches the set value of the material volume, then the controller controls the electric flap gate a15 to open, the powder falls into the storage cavity 16, and after the storage cavity 16 is filled, the electric flap gate a15 is closed, the electric flap gate b17 is opened to send the material in the cavity into the inlet of the electric furnace, and after the material is sent out, the electric flap gate b17 is closed, so as to realize the feeding of the electric furnace, isolate the internal environment of the electric furnace and the screw conveyor 2, prevent the high-temperature gas in the furnace from escaping to cause scalding accidents and dust pollution through indirect feeding, and improve the safety of the device.

[0038] Further, the gate plate 18 of the electric flap gate a15 is arranged in a trapezoidal structure on both sides and is provided with a sealing strip on the side surface (not shown in the figure);

[0039] The trapezoidal structure on both sides of the valve plate facilitates the opening and closing of the valve plate, and the sealing strip arranged on the side surface is used to isolate the high-temperature gas in the electric furnace.

[0040] Further, the gate plate 18 of the electric flap gate b17 is arranged in a trapezoidal structure on both sides and is provided with a sealing strip on the side surface (not shown in the figure);

[0041] The valve plate is turned to discharge the material, the sealing strip is arranged on the side surface of the flap, the bottom surface mainly affected by the condensation of zinc vapor in the electric furnace does not play a sealing role, so as to reduce the area of the sealing surface affected, prolong the service life of the device, and improve the reliability.

[0042] In summary, the device combines the negative pressure conveying device with the screw conveyor 2 to feed the material, the negative pressure conveying eliminates the dust pollution from the source of the material, and the screw conveyor 2 ensures the stable conveying of the material to the electric furnace; the feeding gate group 3 isolates the internal environment of the electric furnace and the screw conveyor 2, prevents the high-temperature gas in the furnace from escaping to cause scalding accidents and dust pollution through indirect feeding, improves the safety of the device, and reduces the area of the gate plate 18 affected by the attachment of zinc vapor in the electric furnace for a long time to reduce the sealing performance of the gate, prolong the service life of the device, and improve the reliability.

[0043] The utility model discloses a working principle: fan 4 provides power for the conveying pipeline, in this embodiment, taking the roots blower as an example, makes the feed pipe 5 produce negative pressure and inhales zinc powder material into the conveying pipeline, and the operator can control the feed pipe 5 connected to the conical pipeline interface to suck material through the telescopic pipeline 8, also can dismount and change the upper pipeline interface and directly access the material storage bin below the zinc powder material storage to suck material, the conveying pipeline conveys material to the material collection cylinder 6 and converges, and the converged material is sent from the side of the cylinder body 10, under the action of inertia and gravity, rotates and falls along the inner wall of the cylinder body 10, and part of the material is blocked by the blocking plate 13, and the spring 14 between the mounting plate 12 and the top of the cylinder body 10 is deformed and vibrates under the impact of the material, and the material blocked by the blocking plate 13 is shaken off to the collecting hopper 11 below, and then the falling material is collected by the collecting hopper 11, and slides through the pipeline to the inlet of the screw conveyor 2, and the first stage conveying of the material is completed, and in the process, the pipeline is negative pressure suction conveying, and the feed inlet does not produce additional dust pollution, and the material is converged and decelerated through the material collection cylinder 6, and cooperates with the screw conveyor 2 to stably feed the electric furnace, and the stable feeding is ensured.

[0044] The material is lifted and conveyed to the upper of the feeding valve group by the screw conveyor 2, and then falls into the pipeline on the electric flap valve a15, under the normal state, the electric flap valve a15 and the electric flap gate b17 are closed, the material is lifted by the screw conveyor 2 and falls into the pipeline above the electric flap valve a15, the flow signal transmitted by the powder flowmeter 7 is transmitted to the electric furnace body 1 controller, and after the data signal of the controller is converted and reaches the set value of the material volume, the controller controls the electric flap valve a15 to open, so that the material falls into the material storage cavity 16, then the electric flap valve a15 behind the material storage cavity 16 is closed, the electric flap valve b17 is opened, the material in the material storage cavity 16 is sent into the electric furnace inlet, after the material is sent out, the electric flap valve b17 is closed, and the electric furnace is fed in this way, the internal environment of the electric furnace and the screw conveyor 2 is isolated, the high-temperature gas in the furnace is prevented from escaping to cause scalding accidents and dust pollution through the indirect feeding mode, and the safety of the device is improved.

[0045] In the reversing feeding process of the electric flap valve a15, the trapezoidal structure on both sides of the valve plate is convenient for opening and closing, and the sealing strip arranged on the side is used to isolate the high-temperature gas and dust from the electric furnace interior when the electric flap valve b17 is opened, so that the safety of the device is improved, in the reversing feeding process of the electric flap valve b17, the valve plate is reversed and discharged, the sealing strip is arranged on the side of the flap, the bottom surface mainly affected by the condensation of zinc vapor in the electric furnace does not play a sealing role, so that the area of the affected sealing surface is reduced, the service life of the device is prolonged, and the reliability is improved.

[0046] Up to now, the working principle of the device is described.

[0047] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0048] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. An automatic zinc powder feeding system with dust collection, comprising an electric furnace body (1) and a feeding system, wherein the feeding system is arranged on the right side of the electric furnace body (1) and is connected to the controller of the electric furnace body (1) by telecommunication, and is characterized in that: The feeding system further comprises a negative pressure conveying device, a screw conveyor (2), and a feeding gate group (3). The negative pressure conveying device, which can prevent the feeding from generating dust, is arranged on the right side of the screw conveyor (2), and the feeding gate group (3), which can prevent the high-temperature furnace gas from flowing back and preventing dust pollution, is arranged below the left side of the screw conveyor (2).

2. The automatic zinc powder feeding system with dust collection according to claim 1 is characterized in that: The negative pressure conveying device further comprises a fan (4), a feed pipe (5), and a material collecting cylinder (6). The fan (4) for providing power to the pipeline is arranged on the right side of the feed pipe (5) and is connected to the feed pipe (5) through a conveying pipe. The material collecting cylinder (6) is arranged on the left side of the feed pipe (5) and is connected to the feed pipe (5) through a conveying pipe.

3. The automatic zinc powder feeding system with dust collection according to claim 2, characterized in that: The conveying pipeline is also provided with a powder flow meter (7).

4. The automatic zinc powder feeding system with dust collection according to claim 2, characterized in that: The feed pipe (5) further comprises a telescopic pipe (8) and a pipe joint (9). The pipe joint (9) which can be disassembled and transformed according to the working conditions is arranged at the front end of the telescopic pipe (8) which can be telescopically bent.

5. The automatic zinc powder feeding system with dust collection according to claim 2, characterized in that: The material collecting cylinder (6) further comprises a cylinder (10), a collecting hopper (11), a mounting plate (12), a material baffle plate (13), and a spring (14). The cylinder (10) is arranged in the middle and connected to the side of the conveying pipe at the rear part of the cylinder (10). The collecting hopper (11) with a conical structure is arranged below the cylinder (10). The mounting plate (12) is arranged below the top of the cylinder (10) and is connected to the top of the cylinder (10) via the spring (14). The material baffle plate (13) is arranged below the mounting plate (12) along the circumference of the material input direction.

6. The automatic zinc powder feeding system with dust collection according to claim 1, characterized in that: The feeding gate group (3) further comprises an electric flap gate a (15), a material storage chamber (16), and an electric flap gate b (17), wherein the electric flap gate a (15) is arranged above the material storage chamber (16), and the electric flap gate b (17) is arranged below the material storage chamber (16).

7. The automatic zinc powder feeding system with dust collection according to claim 6, characterized in that: The gate plate (18) of the electric flap gate a (15) is provided with trapezoidal structures on both sides and sealing strips on the sides.

8. The automatic zinc powder feeding system with dust collection according to claim 6, characterized in that: The gate plate (18) of the electric flap gate b (17) is provided with a trapezoidal structure on both sides and a sealing strip on the side.

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