Pump chamber of double-chamber furnace

Abstract

The utility model relates to the technical field of aluminum waste recovery, in particular to a double-chamber furnace pump chamber which comprises a rotor chamber and a vortex well communicated with the downstream of the rotor chamber, and further comprises a slag salvaging chamber communicated with the upstream of the rotor chamber, and the slag salvaging chamber comprises a flow channel grate and a slag salvaging cavity. The runner grate comprises a main body part and connecting parts formed on the two sides of the main body part, a plurality of grate holes are formed in the main body part, the connecting parts on the two sides of the main body part are parallel to each other, the outer side walls of the connecting parts are attached to the inner wall of the slag salvaging chamber, and the slag salvaging cavity is formed between the inner side walls of the connecting parts. The slag salvaging chamber is arranged in front of the rotor chamber, and lumps and slag mixed in molten aluminum are separated, so that the rotor is prevented from being damaged, and the service life of the rotor is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of aluminum waste recycling, and particularly relates to a pump chamber of a double-chamber furnace. Background Art

[0002] In the production and processing of aluminum products, a large amount of process waste and defective products will inevitably be generated. As one of the powerful means to reduce costs and increase efficiency, the proportion of aluminum waste used by most casting enterprises is also increasing year by year. Since the sawdust, milling chips and other small-sized chip-like thin materials in aluminum waste have a large burn loss if directly exposed to an open flame after being added to an ordinary melting furnace, in order to reduce the burn loss of aluminum chip waste, casting enterprises usually configure a double-chamber furnace.

[0003] The main body of the double-chamber furnace includes three areas: a main furnace chamber, a secondary furnace chamber, and a pump area (vortex feeding well). The three areas are relatively independent of each other, and the aluminum liquid circulates among the three areas. Among them, the gas burner is arranged in the main furnace chamber, and the chip-like aluminum waste such as sawdust, milling chips, and turning chips is sucked into the aluminum liquid through the vortex well. The power for the circulating flow of the aluminum liquid is provided by a mechanical pump installed in the pump area. The mechanical pump pumps the relatively high-temperature aluminum liquid from the molten pool of the main furnace chamber through the pump area to the secondary furnace chamber, so that the chip-like waste is melted in an immersion manner without directly contacting the flames in the furnace and being isolated from the air, reducing the burn loss of the waste metal.

[0004] In the actual production process, since a part of slag will be generated during the melting of metallic aluminum itself, and the refractory materials on the furnace wall, furnace top, and furnace bottom of the melting furnace will fall off due to aging, when the rotor of the mechanical pump of the double-chamber furnace sucks in slag during high-speed rotation, it will directly cause the rotor of the mechanical pump to stop rotating or even break. It is necessary for workers to fish out the slag from the high-temperature aluminum liquid in the rotor chamber, and the process of cleaning and replacing the damaged rotor is time-consuming and laborious, not only with a large labor intensity, but also seriously affecting the production efficiency. Summary of the Invention

[0005] In order to solve the problem that the rotor of the mechanical pump in the pump area of the double-chamber furnace sucks in slag blocks, resulting in frequent shutdowns and damage, the utility model provides a pump chamber of a double-chamber furnace, and a slag fishing chamber is arranged in front of the rotor chamber to separate the lumps and slag mixed in the aluminum liquid, thereby avoiding rotor damage and improving the service life of the rotor.

[0006] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0007] A dual-chamber furnace pump chamber includes a rotor chamber and a vortex well, the vortex well being connected and arranged downstream of the rotor chamber. The chamber also includes a slag scooping chamber, which is connected and arranged upstream of the rotor chamber. The slag scooping chamber comprises a flow grate and a slag scooping cavity. The flow grate comprises a main body and connecting portions formed on either side of the main body. The main body is provided with a plurality of grate holes. The connecting portions on either side of the main body are parallel to each other, and the outer walls of the connecting portions are aligned with the inner wall of the slag scooping chamber. The inner walls of the connecting portions form the slag scooping cavity. The flow grate is used to intercept lumps and slag mixed in the molten aluminum.

[0008] Furthermore, the thickness of the main body is smaller than the thickness of the connecting portion, so that the grate can be placed more stably while ensuring the liquid flow rate in the slag scooping chamber.

[0009] Furthermore, the thickness of the main body and the connecting part are both 100 to 250 mm.

[0010] Furthermore, the top surface of the runner grate is provided with a lifting device for lifting the runner grate, and the lifting device is a lifting ring, a lifting hook or a lifting belt. The runner grate can be taken out of the slag scooping chamber.

[0011] Furthermore, the grate holes are arranged below the main body, and the plurality of grate holes are parallel to each other and have equal spacing. The slag scooping chamber is connected to the rotor chamber through the grate holes.

[0012] Furthermore, the width of the grate holes is 50-70 mm and the height is 300-500 mm. Under such dimensions, the flow rate and efficiency of the mechanical pump are guaranteed while the damage to the mechanical pump rotor is avoided.

[0013] Furthermore, the grate holes are rectangular, with each grate hole having a width of 60 mm and a height of 400 mm. In actual production, this size provides the best production efficiency.

[0014] Through the above technical solution, the beneficial effects of the utility model are:

[0015] The utility model sets a slag scooping chamber in front of the rotor chamber. By carefully designing the shape and size of the flow channel grate, it can intercept lumps and slag mixed in the aluminum liquid and ensure the flow rate and efficiency of the mechanical pump. Therefore, without affecting the production efficiency as much as possible, the service life of the mechanical pump rotor is extended, and the purchase cost of the rotor and the work intensity of manually scooping rotor fragments are greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the flow channel grate of the utility model Figure 1 ;

[0018] Figure 3 This is a schematic diagram of the structure of the flow channel grate of the utility model Figure 2 ;

[0019] The numbers in the accompanying drawings are: 1 is a slag scooping chamber, 11 is a flow channel grate, 111 is a main body, 112 is a grate hole, 113 is a connecting part, 12 is a sling, 2 is a rotor chamber, and 3 is a vortex well. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0021] like Figures 1 to 3 As shown, this embodiment provides a double-chamber furnace pump chamber, including a rotor chamber 2, a vortex well 3 and a slag removal chamber 1. The vortex well 3 is connected and arranged downstream of the rotor chamber 2, and the slag removal chamber 1 is connected and arranged upstream of the rotor chamber 2. The vortex well 3 is used to put in sawdust, milling chips, turnings and other debris aluminum waste. The rotor chamber 2 is used to place the mechanical pump rotor. The mechanical pump rotor rotates at high speed, causing the aluminum liquid to flow through the slag removal chamber 1, the rotor chamber 2 and the vortex well 3 in sequence, so that the aluminum waste in the vortex well 3 is sucked into the aluminum liquid.

[0022] The slag scooping chamber 1 includes a flow channel grate 11 and a slag scooping cavity. The flow channel grate 11 includes a main body 111 and connecting parts 113 formed on both sides of the main body 111. The connecting parts 113 on both sides of the main body 111 are parallel to each other, and the outer side walls of the connecting parts 113 are in contact with the inner wall of the slag scooping chamber 1. The slag scooping cavity is formed between the inner side walls of the connecting parts 113.

[0023] Specifically, the flow channel grate 11 is in an "concave" shape and is cast in one piece from high-temperature resistant refractory material. The thickness of the main body 111 and the connecting part 113 are both 100 to 250 mm. The thickness of the main body 111 is less than the thickness of the connecting part 113, which not only ensures the flow rate of the liquid in the slag scooping chamber, but also makes the grate more firmly placed in the slag scooping chamber. As an implementable embodiment, the thickness of the main body 111 is 100 mm, and the thickness of the connecting part 113 is 250 mm.

[0024] In order to conveniently take out the flow channel grate 11, a sling 12 for lifting the flow channel grate 11 is provided on the upper top surface of the flow channel grate 11. The sling 12 can be a lifting ring, a lifting hook or a lifting belt. The drawings of the present invention show a lifting ring.

[0025] A plurality of grate holes 112 are provided on the main body portion 111. The grate holes 112 are provided below the main body portion 111. The plurality of grate holes 112 are parallel to each other and have equal spacing. The width of the grate holes 112 is 50-70 mm, and the height is 300-500 mm. If the grate holes 112 are too large, too large lumps and slag will be sucked in and damage the mechanical pump rotor. If the size of the grate holes 112 is too small, although more lumps and slag can be filtered, it will affect the flow rate and efficiency of the mechanical pump, and will shorten the frequency and time period of clogging at the grate part. The grate needs to be cleaned regularly. In the actual production process, lumps and slag with a width less than 50 mm, even if sucked by the mechanical pump rotor, can be broken by the high-speed rotating rotor and will not cause the mechanical pump rotor to stop rotating.

[0026] As an implementable mode, a total of five grate holes 112 are provided on the main body portion 111. The grate holes 112 are rectangular. The width of each grate hole 112 is 60 mm, and the height is 400 mm. In this size, the probability of rotor damage is reduced by 80%, greatly improving the service life of the rotor, avoiding workers from fishing slag beside the high-temperature aluminum liquid, and greatly reducing the labor intensity.

[0027] During use, the runner grate 11 is placed in the slag fishing chamber 1, the mechanical pump rotor is lowered into the rotor chamber 2, the mechanical pump is started, and the aluminum liquid flows through the slag fishing chamber 1 and the rotor chamber 2 in sequence, taking away debris aluminum waste such as sawdust, milling chips, and turning chips in the vortex well 3. During this process, large foreign objects such as slag blocks doped in the aluminum liquid and refractory material lump blocks falling off are intercepted in the slag fishing cavity and will not cause the mechanical pump rotor to be jammed or damaged. Small foreign objects enter the rotor chamber 2, are broken by the high-speed rotating rotor, and enter the melting furnace together with the debris aluminum waste.

[0028] The above embodiments are only the preferred embodiments of the present invention, and do not limit the implementation scope of the present invention. Therefore, any equivalent changes or modifications made according to the structure, features, and principles described in the scope of the present invention patent should be included in the scope of the patent application of the present invention.

Claims

1. A double-chamber furnace pump chamber, comprising a rotor chamber (2) and a vortex well (3), wherein the vortex well (3) is communicatively arranged downstream of the rotor chamber (2), and is characterized in that, It further includes a slag scraping chamber (1), the slag scraping chamber (1) is connected and arranged upstream of the rotor chamber (2), the slag scraping chamber (1) includes a flow channel grate (11) and a slag scraping cavity, the flow channel grate (11) includes a main body portion (111) and connecting portions (113) formed on both sides of the main body portion (111), a plurality of grate holes (112) are arranged on the main body portion (111), the connecting portions (113) on both sides of the main body portion (111) are parallel to each other, and the outer side walls of the connecting portions (113) are attached to the inner wall of the slag scraping chamber (1), and the slag scraping cavity is formed between the inner side walls of the connecting portions (113).

2. The double-chamber furnace pump chamber according to claim 1, wherein The thickness of the main body portion (111) is less than the thickness of the connecting portion (113).

3. The double-chamber furnace pump chamber according to claim 1, characterized in that, The thicknesses of the main body portion (111) and the connecting portion (113) are both 100 - 250 mm.

4. A double-chamber furnace pump chamber according to claim 1, characterized in that, A lifting device (12) for lifting out the flow channel grate (11) is arranged on the upper top surface of the flow channel grate (11), and the lifting device (12) is a lifting ring, a hook or a sling.

5. The pump chamber of a double-chamber furnace according to claim 1, characterized in that, The grate holes (112) are arranged below the main body portion (111), and the plurality of grate holes (112) are parallel to each other and have equal spacing.

6. A double-chamber furnace pump chamber according to claim 1, wherein, The width of the grate holes (112) is 50 - 70 mm and the height is 300 - 500 mm.

7. The pump chamber of a double-chamber furnace according to claim 6, characterized in that, The grate holes (112) are rectangular, and the width of each grate hole (112) is 60 mm and the height is 400 mm.

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