A sealed feed device for a lead melting furnace

Abstract

The utility model discloses a kind of sealing feeders of lead melting furnace, including the furnace body with the feed inlet being arranged at top, further include at least the sliding cavity with top wall and bottom wall, top wall and bottom wall are provided with the opening through wall thickness, the opening on bottom wall is communicated with feed inlet, two openings are vertically staggered arrangement;Sliding cavity inside is provided with the slider that is sealed with top wall and bottom wall, the slider is provided with the material groove through its thickness direction, and the material groove is provided with suction port, the slider is slidably arranged in sliding cavity interior, so that material groove reciprocatingly moves between two openings.The utility model moves the material groove to transfer the lead block entered in the opening of top plate to the opening of bottom plate, so that lead block is sent into furnace body interior, in this process, material groove can only be communicated with one of two openings, so that feed inlet is always in closed state, thereby reduce the number of dust, moisture and oxygen entering furnace body interior, improve the quality of lead liquid in lead melting furnace interior.

Description

Technical Field

[0001] This utility model belongs to the field of lead melting furnace technology, and in particular relates to a sealed feeding device for a lead melting furnace. Background Technology

[0002] A lead melting furnace is an industrial device used to heat solid lead to a molten state. It is widely used in lead-acid battery manufacturing, lead alloy production, lead casting processing, and waste lead recycling. Its design and use must take into account safety, efficiency, and environmental protection.

[0003] The patent with publication number CN205011812U discloses a lead melting furnace for recycling waste lead-acid batteries. When raw materials are added to the lead melting furnace through the feed hopper, the inside and outside of the furnace are connected. At this time, dust, moisture, oxygen and other substances in the air may mix into the lead liquid. Dust and impurities will affect the quality of lead products, and oxygen will cause the surface of the lead liquid to oxidize, generating impurities such as lead oxide, which will increase the subsequent purification cost.

[0004] Therefore, it is necessary to improve the lead melting furnace in the existing technology. Utility Model Content

[0005] The purpose of this invention is to overcome the defects in the existing technology and provide a sealed feeding device for a lead melting furnace, which improves the sealing effect during the feeding process of the lead melting furnace.

[0006] To achieve the above objectives, the specific technical solution of the sealed feeding device for the lead melting furnace of this utility model is as follows:

[0007] A sealed feeding device for a lead melting furnace includes a furnace body with a feeding port at the top, and a sliding cavity having at least a top wall and a bottom wall. Both the top wall and the bottom wall are provided with openings that penetrate the wall thickness. The opening on the bottom wall communicates with the feeding port, and the two openings are vertically staggered.

[0008] The sliding cavity is provided with a slider that is sealed and abuts against both the top wall and the bottom wall. The slider has a material groove that extends through its thickness direction and has an air extraction port. The slider is slidably disposed inside the sliding cavity, so that the material groove moves back and forth between the two openings.

[0009] Preferably, the furnace body is connected to an air filling pipe and an air extraction pipe, and both the air filling pipe and the air extraction pipe are equipped with a power pump.

[0010] Preferably, the exhaust pipe is a three-way pipe, with its first and second ends connected to the exhaust port and the interior of the furnace body, respectively, and its third end connected to the power pump. Valves are also provided at the first and second ends of the exhaust pipe.

[0011] Preferably, the feed trough is also provided with an air inlet.

[0012] Preferably, the air filling pipe is a three-way pipe, with its first and second ends connected to the air inlet and the interior of the furnace body, respectively, and its third end connected to the power pump. Valves are also provided at the first and second ends of the air filling pipe.

[0013] Preferably, the slider has a top plate and a bottom plate on its upper and lower sides, respectively, and the two openings are respectively provided on the top plate and the bottom plate. The top plate and the bottom plate are fixedly connected to each other by a connector.

[0014] Preferably, the top plate or the bottom plate is provided with a power component that is connected to the slider in a transmission manner.

[0015] Preferably, one of the air extraction port and the air inlet is disposed on the top plate and the other is disposed on the bottom plate. Both the air extraction port and the air inlet are located on the moving path of the material trough and are located between the two openings.

[0016] Preferably, the slider is provided with multiple material troughs, each of which moves cyclically along a first path, and the openings on the top wall and the bottom wall are sequentially arranged along the first path.

[0017] The sealed feeding device of this utility model for a lead melting furnace has the following advantages: the moving feed trough transfers the lead blocks entering from the opening in the top plate to the opening in the bottom plate, allowing the lead blocks to be fed into the furnace body. During this process, the feed trough can only be connected to one of the two openings, keeping the feed inlet in a closed state at all times. This reduces the amount of dust, moisture, and oxygen entering the furnace body, thereby improving the quality of the molten lead inside the furnace. The air extraction port can extract air from the feed trough, further reducing the amount of oxygen entering the furnace body, thereby further improving the quality of the molten lead inside the furnace. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the installation structure of the feeding device of this utility model;

[0019] Figure 2 This is a schematic diagram of the feeding device of this utility model;

[0020] Figure 3 This is an exploded view of the feeding device of this utility model;

[0021] Figure 4 This is a cross-sectional view of the feeding device of this utility model;

[0022] Figure 5 This is a schematic diagram of another connection structure between the slider and the feed trough of this utility model.

[0023] The markings in the diagram are as follows: 1. Furnace body; 2. Sliding cavity; 3. Gas filling pipe; 4. Gas extraction pipe; 101. Feed inlet; 201. Top plate; 202. Bottom plate; 203. Power component; 204. Feed inlet; 205. Opening; 206. Air inlet; 207. Connecting component; 208. Material trough; 209. Gas extraction port; 301. Valve. Detailed Implementation

[0024] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0025] The terms "top surface," "bottom surface," and "full surface" are used with reference to the normal operating state of the lead melting furnace and are only for the convenience of describing this utility model and simplifying the description. They are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] like Figure 1 and 2 As shown, a sealed feeding device for a lead melting furnace includes a furnace body 1 with a feed inlet 101 at the top, and a sliding cavity 2 having at least a top wall and a bottom wall. Both the top wall and the bottom wall have openings 205 that penetrate the wall thickness. The opening 205 on the bottom wall communicates with the feed inlet 101, and the two openings 205 are vertically staggered. A slider 204 is provided inside the sliding cavity 2, which is in sealed contact with both the top wall and the bottom wall. The slider 204 has a material groove 208 that penetrates its thickness direction, and the material groove 208 is provided with an exhaust port 209. The slider 204 is slidably disposed inside the sliding cavity 2, so that the material groove 208 moves back and forth between the two openings 205.

[0027] The aforementioned lead melting furnace is used to melt lead blocks into molten lead for use in lead-acid battery manufacturing, lead alloy production, and lead casting processing. When adding lead blocks into the furnace body 1, the slider 204 is first moved to align the feed trough 208 with the opening 205 on the top wall, allowing the lead blocks to be fed into the feed trough 208 through the opening 205. Then, the slider 204 is moved again to align the feed trough 208 with the opening 205 on the bottom wall. At this point, the lead blocks inside the feed trough 208 will enter the furnace body 1 through the opening 205 and the feed inlet 101. Flexible graphite seals are installed on the top and bottom walls. The flexible graphite layer can withstand temperatures up to 600 degrees Celsius, which is higher than the melting point of metallic lead. It can withstand the high temperatures when lead blocks are melted. Furthermore, flexible graphite has excellent sealing and self-lubricating properties. The flexible graphite sealing layer can effectively achieve dynamic sealing between the slider 204 and the top and bottom walls, ensuring that the feed inlet 101 remains sealed during the lead block feeding process. This reduces the amount of dust, moisture, and oxygen entering the furnace body 1, thereby improving the quality of the molten metallic lead in the lead melting furnace. At the same time, it can also reduce the diffusion of harmful gases inside the lead melting furnace, improving the environmental performance of the lead melting furnace.

[0028] In this feeding device, the feed trough 208 is also equipped with an air extraction port 209, which can extract the air inside the feed trough 208 to reduce the air content inside the feed trough 208, thereby reducing the amount of air entering the furnace body 1 with the feed trough 208. This further reduces the amount of dust, moisture and oxygen entering the furnace body 1, and improves the quality of molten lead in the lead melting furnace.

[0029] Further improvements include, for example Figure 1 As shown, the furnace body 1 is connected to an air filling pipe 3 and an air extraction pipe 4, both of which are equipped with power pumps. The air filling pipe 3 is connected to an external nitrogen source. Before the lead melting furnace is used, the material trough 208 is aligned with the feed inlet 101 to seal the interior of the furnace body 1. At this time, air is extracted from the interior of the furnace body 1 through the air extraction pipe 4, while nitrogen is injected into the interior of the furnace body 1 through the air filling pipe 3. This replaces the air inside the furnace body 1 with nitrogen, reducing the oxygen content inside the furnace body 1, mitigating the oxidation of the lead melt, and improving the quality of the lead melt. During normal use of the lead melting furnace, the air extraction pipe 4 is closed, while nitrogen is continuously injected into the interior of the furnace body 1 through the air filling pipe 3 to maintain a positive pressure inside the furnace body 1. The pressure of the positive pressure can be detected by a pressure sensor, thus reducing the probability of external air entering the interior of the furnace body 1.

[0030] Further improvements include, for example Figure 2 and 3As shown, the extraction pipe 4 is a three-way pipe, with its first and second ends connected to the extraction port 209 and the interior of the furnace body 1, respectively, and its third end connected to the power pump. Valves 301 are also installed at the first and second ends of the extraction pipe 4. Powered by the power pump, the extraction pipe 4 can extract air from the material trough 208 and / or the interior of the furnace body 1. The opening and closing of the valve 301 allows selection of whether to extract air from the material trough 208 or the interior of the furnace body 1, improving the ease of operation of the lead melting furnace.

[0031] Further improvements include, for example Figure 4 As shown, the material tank 208 is also equipped with an air inlet 206. The air inlet 206 is connected to an external nitrogen source, which can fill the material tank 208 with nitrogen. In conjunction with the exhaust port 209, the air is simultaneously extracted, which can replace the air inside the material tank 208. Therefore, when the material tank 208 is connected to the feed port 101, the amount of air entering the furnace body 1 can be reduced, so as to ensure the quality of the lead liquid inside the furnace body 1. Without replacing the air with nitrogen, the air pressure inside the material tank 208 can be kept close to the atmospheric pressure, reducing the impact of pressure difference on the flexible graphite sealing layer, which is beneficial to maintaining the sealing effect of the slider 204.

[0032] Further improvements include, for example Figure 2 and 3 As shown, the gas filling pipe 3 is a three-way pipe. Its first and second ends are connected to the air inlet 206 and the interior of the furnace body 1, respectively, and its third end is connected to the power pump. Valves 301 are also installed at the first and second ends of the gas filling pipe 3. Power is provided by the power pump, and nitrogen is delivered through the gas filling pipe 3. The valve 301 controls the connection status of the gas filling pipe 3 with the furnace body 1 and the material tank 208. Thus, nitrogen can be injected into the furnace body 1 and / or the material tank 208 through the gas filling pipe to replace the air therein, thereby reducing the oxygen content inside the furnace body 1 and improving the quality of the lead liquid inside the lead melting furnace.

[0033] Further improvements include, for example Figure 2 As shown, a top plate 201 and a bottom plate 202 are respectively provided on the upper and lower sides of the slider 204. Two openings 205 are respectively provided on the top plate 201 and the bottom plate 202. The top plate 201 and the bottom plate 202 are fixedly connected to each other by a connector 207. A power component 203 that is connected to the slider 204 is provided on the top plate 201 or the bottom plate 202.

[0034] Specifically, the top plate 201 and the bottom plate 202 clamp the slider 204 from the top and bottom sides. A flexible graphite sealing layer is set on the bottom surface of the top plate 201 and the top surface of the bottom plate 202. Multiple connectors 207 are provided between the top plate 201 and the bottom plate 202. The connectors 207 include bolts and nuts, which are used to fix the top plate 201 and the bottom plate 202 and realize the adjustment of the gap between them. The connectors 207 are set on both sides of the sliding direction of the slider 204, which can also limit the sliding of the slider 204, improve the stability of the connection between the top plate 201, the bottom plate 202 and the slider 204, and the bolt and nut connection can also facilitate the disassembly and maintenance of the feeding device. The power component 203 is a lead screw and a motor. The lead screw is threaded with the slider 204. The motor drives the lead screw to rotate, which in turn drives the slider 204 to slide, so that the material trough 208 moves back and forth between the two openings 205.

[0035] Further improvements include, for example Figure 2 and 3 As shown, one of the air extraction port 209 and the air inlet 206 is located on the top plate 201, and the other is located on the bottom plate 202. Both the air extraction port 209 and the air inlet 206 are located on the moving path of the material tank 208 and between the two openings 205. The separate arrangement of the air extraction port 209 and the air inlet 206 facilitates the arrangement of the air filling pipe 3 and the air extraction pipe 4, and increases the distance between them. This reduces the mutual interference when the air extraction pipe 4 extracts air and the air filling pipe 3 injects nitrogen, thus improving the air replacement effect inside the material tank 208.

[0036] Further improvements include, for example Figure 5 As shown, the slider 204 is provided with multiple material troughs 208, each material trough 208 moves cyclically along the first path, and the opening 205 on the top plate 201 and the opening 205 on the bottom plate 202 are arranged sequentially along the first path.

[0037] In the above-mentioned feeding device, the slider 204 is arranged in another way, so that the slider 204 is rotatably arranged between the top wall and the bottom wall. The material grooves 208 arranged on the slider 204 rotate around the rotation center of the slider 204, so that the material grooves 208 circulate between the opening 205 on the top wall, the air extraction port 209 and the opening 205 on the bottom wall. By setting multiple material grooves 208, the conveying speed of the lead block can be increased, thereby increasing the feeding speed of the feeding device.

[0038] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A sealed feeding device for a lead melting furnace, comprising a furnace body (1) with a feeding port (101) at the top, characterized in that: It also includes a sliding cavity (2) having at least a top wall and a bottom wall, wherein the top wall and the bottom wall are provided with openings (205) that penetrate the wall thickness, the opening (205) on the bottom wall is connected to the feed port (101), and the two openings (205) are staggered vertically. The sliding cavity (2) is provided with a slider (204) that is sealed and abuts against the top wall and the bottom wall. The slider (204) has a material groove (208) that extends through its thickness direction, and the material groove (208) is provided with an air extraction port (209). The slider (204) is slidably disposed inside the sliding cavity (2), so that the material groove (208) moves back and forth between the two openings (205).

2. The sealed feeding device for a lead melting furnace according to claim 1, characterized in that, The furnace body (1) is connected to an air filling pipe (3) and an air extraction pipe (4), and both the air filling pipe (3) and the air extraction pipe (4) are equipped with power pumps.

3. The sealed feeding device for the lead melting furnace according to claim 2, characterized in that, The exhaust pipe (4) is a three-way pipe, with its first and second ends connected to the exhaust port (209) and the interior of the furnace body (1) respectively, and its third end connected to the power pump. Valves (301) are also provided at the first and second ends of the exhaust pipe (4).

4. The sealed feeding device for a lead melting furnace according to claim 2, characterized in that, The feed trough (208) is also provided with an air inlet (206).

5. The sealed feeding device for a lead melting furnace according to claim 4, characterized in that, The air filling pipe (3) is a three-way pipe, with its first and second ends connected to the air inlet (206) and the interior of the furnace body (1) respectively, and its third end connected to the power pump. Valves (301) are also provided at the first and second ends of the air filling pipe (3).

6. The sealed feeding device for a lead melting furnace according to claim 4, characterized in that, The slider (204) has a top plate (201) and a bottom plate (202) on its upper and lower sides respectively. The two openings (205) are respectively provided on the top plate (201) and the bottom plate (202). The top plate (201) and the bottom plate (202) are fixedly connected to each other by a connector (207).

7. The sealed feeding device for a lead melting furnace according to claim 6, characterized in that, The top plate (201) or the bottom plate (202) is provided with a power component (203) that is connected to the slider (204) in a transmission manner.

8. The sealed feeding device for a lead melting furnace according to claim 6, characterized in that, One of the air extraction port (209) and the air inlet (206) is located on the top plate (201) and the other is located on the bottom plate (202). Both the air extraction port (209) and the air inlet (206) are located on the moving path of the material trough (208) and are located between the two openings (205).

9. The sealed feeding device for a lead melting furnace according to claim 1, characterized in that, The slider (204) is provided with a plurality of material troughs (208), each of the material troughs (208) moves cyclically along the first path, and the openings (205) on the top wall and the bottom wall are arranged sequentially along the first path.

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