Powder spraying prevention device for reducing furnace stock bin

Abstract

The utility model relates to the technical field of reduction furnaces, and provides a powder spraying prevention device for a reduction furnace stock bin, which aims at solving the problem that powder is easy to spray when a raw material barrel and a stock bin are conveyed in the existing reduction furnace, and is characterized in that a connecting mechanism is arranged at the top of the reduction furnace stock bin; the end, away from the reducing furnace bin, of the connecting mechanism communicates with a raw material barrel, and the connecting mechanism is detachably connected with the reducing furnace bin and the raw material barrel. An emptying pipe is further arranged at the top of the reducing furnace bin, and one end, far away from the reducing furnace bin, of the emptying pipe is communicated with the top of the raw material barrel. According to the device, the sealing effect between the raw material barrel and the stock bin is effectively improved, a corresponding output path is provided for rapid circulation of air generated in the process that materials enter the stock bin, and the situation that the air cannot be rapidly and effectively exchanged to the outside of the stock bin, and consequently too large pressure is applied to a stock bin pipe valve is avoided; therefore, the problem that powder is continuously sprayed in the feeding process of the stock bin is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of reduction furnaces, and more specifically, to an anti-powder spraying device for a reduction furnace bunker. Background Art

[0002] A rotary tube reduction furnace is a thermal equipment for calcining, roasting or drying granular and powdery materials, also known as a rotary furnace, which is mainly used for the reduction process of powder metallurgy in the field of alloy metals. The rotary furnace mainly consists of a bunker, a feeding mechanism, a furnace tube and a discharging mechanism, etc. Among them, the bunker is usually equipped with a sealable feeding port, an upper feeding valve, a lower discharging valve, a vent valve and a material level height detector, etc. During the production process, the bucket filled with raw material powder is moved to the feeding port at the top of the bunker by a crane. When the material level height detector measures that the raw materials in the bunker are too few, the lower discharging valve is closed and the upper feeding valve is opened, and the raw materials in the bucket are sent into the bunker from the feeding port.

[0003] However, problems such as powder spraying or powder leakage often occur during the feeding and discharging of the bunker, and currently, most of them are to optimize and improve the discharging link of the reduction furnace bunker. For example, the patent of CN212864820U provides an anti-blocking material pulverized coal injection device for a smelting reduction furnace, including a dry coal bunker, a blanking bunker, an intermediate tank, a blowing tank, a rotary feeder, and a dome valve; a blanking bunker is arranged at the lower part of the dry coal bunker, the blanking bunker is in an inverted conical shape, and three layers of fluidization devices are installed on the blanking bunker. The lower fluidization device is near the outlet of the blanking bunker and is provided with 4 fluidization holes; the middle fluidization device is located at the lower middle position of the blanking bunker and is provided with 8 fluidization holes; the upper fluidization device is located at the upper middle position of the blanking bunker and is provided with 4 fluidization holes; the fluidization device includes a fluidization gas nozzle for continuously introducing fluidized nitrogen into the dry coal bunker. This device can solve the normal discharging of materials, make the materials smooth and not easy to block.

[0004] However, at present, there are still problems of powder spraying and powder leakage in the feeding link between the raw material bucket and the bunker. Therefore, there is an urgent need for an anti-powder spraying device that can effectively reduce a large amount of powder spraying between the raw material bucket and the bunker. Summary of the Utility Model

[0005] The purpose of the utility model is to solve the problem that powder is easily sprayed during the transportation between the raw material bucket and the bunker in the existing reduction furnace. The present application provides an anti-powder spraying device for a reduction furnace bunker, which can effectively improve the sealing effect between the raw material bucket and the bunker, provide a corresponding output path for the rapid circulation of air generated during the process of the material entering the bunker, and avoid the excessive pressure of the air on the bunker pipe valve parts due to the inability to quickly and effectively exchange to the outside of the bunker, thereby solving the problem of continuous powder spraying during the feeding process of the bunker.

[0006] The utility model is realized through the following technical solutions:

[0007] The utility model provides an anti - powder - spraying device for a reduction furnace silo. A connecting mechanism is arranged at the top of the reduction furnace silo. One end of the connecting mechanism far away from the reduction furnace silo is communicated with a raw material barrel, and the connecting mechanism is detachably connected to the reduction furnace silo and the raw material barrel respectively; a drain pipe is also arranged at the top of the reduction furnace silo, and one end of the drain pipe far away from the reduction furnace silo is communicated with the top of the raw material barrel.

[0008] Preferably, a drain hole is formed at the top of the reduction furnace silo, and the drain pipe can be clamped with the drain hole; a hole plate is arranged on the inner top of the reduction furnace silo, the hole plate can cover the end face of the drain hole, and the hole plate is detachably connected to the reduction furnace silo.

[0009] Preferably, a slider protrudes from the top of the reduction furnace silo, and a chute is arranged on the top surface of the hole plate, so that the hole plate can be slidably connected to the top of the reduction furnace silo.

[0010] Preferably, the drain pipe includes a straight pipe and elbow pipes arranged at both ends of the straight pipe. The elbow pipes are respectively communicated with the top of the reduction furnace silo or the top of the raw material barrel; a plurality of baffle plates are arranged on the inner side wall of the straight pipe, and the plurality of baffle plates are arranged at intervals in the vertical direction, and adjacent two baffle plates are arranged on the opposite sides of the inner wall of the straight pipe.

[0011] Preferably, the connecting mechanism includes a connecting pipe. The bottom end of the connecting pipe can be communicated with the top of the reduction furnace silo through a pipe valve, and the top of the connecting pipe can be communicated with the raw material barrel.

[0012] Preferably, a funnel is arranged at the top of the connecting pipe, and the tip of the funnel is communicated with the connecting pipe; the top of the raw material barrel is in a convex conical shape, and the bottom of the raw material barrel can abut against the inner wall of the round end of the funnel.

[0013] Preferably, a sealing cover is arranged at the top of the raw material barrel, the drain pipe passes through the sealing cover, and the drain pipe is communicated with the inner cavity of the raw material barrel.

[0014] Preferably, a flow velocity detector is arranged at one end of the drain pipe close to the reduction furnace silo, and the flow velocity detector is provided with an external display screen.

[0015] The technical solution of the utility model has the following beneficial effects:

[0016] It is found through research on the present utility model that a large amount of powder spraying is likely to occur between the raw material barrel and the silo because when the material in the silo is not filled, there is a large amount of air at the top inside the silo. As the material enters the silo and is rapidly squeezed, the air inside the silo generates a relatively large pressure, that is, it is difficult to fully meet the rapid exchange between the material and the air only through the feeding port. Eventually, the material sprays out from the gaps of other pipe valves in the silo, resulting in the powder spraying phenomenon.

[0017] The anti-powder spraying device for the reduction furnace silo of the present utility model is provided with a connecting mechanism between the raw material barrel and the silo. At the same time, an exhaust pipe is connected in series at the top of the silo, which can effectively improve the sealing effect between the raw material barrel and the silo. At the same time, it provides a corresponding output path for the rapid circulation of the air generated during the process of the material entering the silo, avoiding the excessive pressure of the air on the pipe valves of the silo due to the inability to quickly and effectively exchange the air outside the silo, thereby solving the problem of continuous powder spraying during the feeding process of the silo, reducing unnecessary loss and waste of raw materials, and keeping the workshop environment clean. Brief Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present utility model, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic structural diagram of the anti-powder spraying device for the reduction furnace silo in Embodiment 1;

[0020] Figure 2 It is a schematic cross-sectional structure diagram of the reduction furnace silo in Embodiment 1;

[0021] Figure 3 For Figure 2 It is a schematic structural diagram of the partial enlargement of part A therein;

[0022] Figure 4 For Figure 3 It is a schematic structural diagram of the partial enlargement of part B therein;

[0023] Figure 5 It is a schematic cross-sectional structure diagram of the straight pipe in Embodiment 1.

[0024] Icon: 1 - Reduction furnace silo, 11 - Exhaust hole, 12 - Orifice plate, 13 - Slide block, 2 - Raw material barrel, 21 - Sealing cover, 3 - Exhaust pipe, 31 - Straight pipe, 32 - Elbow pipe, 33 - Baffle plate, 41 - Connecting pipe, 42 - Pipe valve, 43 - Hopper, 51 - Flow rate detector, 52 - External display screen. Detailed Description of the Embodiments

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, 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 some, but not all, of the embodiments of the present utility model. The components of the embodiments of the present utility model usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0028] Embodiment 1

[0029] As Figures 1 to 5 shown, this embodiment provides an anti-powder spraying device for a reduction furnace silo. A connection mechanism is configured at the top of the reduction furnace silo 1. One end of the connection mechanism away from the reduction furnace silo 1 communicates with the raw material barrel 2. A sealing cover 21 is configured at the top of the raw material barrel 2. The connection mechanism communicates with the reduction furnace silo 1 and the raw material barrel 2 respectively; a drain pipe 3 is also configured at the top of the reduction furnace silo 1. One end of the drain pipe 3 away from the reduction furnace silo 1 penetrates through the sealing cover 21, and the drain pipe 3 communicates with the inner cavity of the raw material barrel 2. Both ends of the drain pipe 3 are connected to the reduction furnace silo 1 or the raw material barrel 2 through pipe valve parts.

[0030] The anti-powder spraying device for the reduction furnace silo 1 in this embodiment is provided with a connection mechanism between the raw material barrel 2 and the silo, which can effectively improve the sealing effect between the raw material barrel 2 and the silo; at the same time, a drain pipe 3 is also connected in series at the top of the silo. When a large amount of materials move from the raw material barrel 2 to the reduction furnace silo 1, the drain pipe 3 can provide a corresponding output path for the rapid circulation of the air generated during the process of the materials entering the silo, avoiding the excessive pressure on the pipe valve parts of the silo caused by the air being unable to be quickly and effectively exchanged to the outside of the silo, thereby solving the problem of continuous powder spraying during the feeding process of the silo. That is, during the entire process of transporting materials, the flying material powder in the reduction furnace silo 1 can be circulated back into the raw material barrel 2 through the drain pipe 3, which not only avoids powder spraying and keeps the workshop environment clean, but also reduces unnecessary loss and waste of raw materials.

[0031] In this embodiment, an evacuation hole 11 is formed at the top of the reduction furnace silo 1, and the evacuation pipe 3 can be clamped to the evacuation hole 11; a perforated plate 12 is installed on the inner top of the reduction furnace silo 1, and the perforated plate 12 can cover the end face of the evacuation hole 11; a slider 13 protrudes from the top of the reduction furnace silo 1, and a chute is arranged on the top surface of the perforated plate 12, so that the perforated plate 12 can be slidably connected to the top of the reduction furnace silo 1.

[0032] In this embodiment, the evacuation pipe 3 includes a straight pipe 31 and elbow pipes 32 arranged at both ends of the straight pipe 31. The elbow pipes 32 are respectively communicated with the top of the reduction furnace silo 1 or the top of the raw material barrel 2; a plurality of baffle plates 33 are arranged on the inner side wall of the straight pipe 31, and the plurality of baffle plates 33 are arranged at intervals in the vertical direction, and two adjacent baffle plates 33 are respectively arranged on the opposite sides of the inner wall of the straight pipe 31.

[0033] In this embodiment, the connecting mechanism includes a connecting pipe 41. The bottom end of the connecting pipe 41 can be communicated with the top of the reduction furnace silo 1 through a pipe valve 42, and the top of the connecting pipe 41 can be communicated with the raw material barrel 2; a funnel 43 is arranged at the top of the connecting pipe 41, and the tip of the funnel 43 is communicated with the connecting pipe 41. The raw material barrel 2 is a stainless steel barrel with a convex cone at the top, and the cone of the raw material barrel 2 just fits the inner cone of the funnel 43, that is, the bottom of the raw material barrel 2 can abut against the inner wall of the round end of the funnel 43, and a sealing rubber ring is arranged at the connection between the funnel 43 and the raw material barrel 2 to keep the raw material barrel 2 and the funnel 43 in a sealed connection during the material transportation process.

[0034] In this embodiment, a flow rate detector 51 is arranged at one end of the evacuation pipe 3 close to the reduction furnace silo 1, and the flow rate detector 51 is provided with an external display screen 52. By monitoring the air flow rate in the evacuation pipe 3 in real time, it is convenient for the operator to control the material and space convection exchange state between the raw material barrel 2 and the reduction furnace silo 1. When abnormal conditions occur, timely adjustment can be made to reduce the risk of abnormal conditions such as powder spraying.

[0035] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A powder spray prevention device for a reduction furnace silo, characterized in that: A connecting mechanism is arranged on the top of the reduction furnace silo (1), one end of the connecting mechanism away from the reduction furnace silo (1) is connected to the raw material barrel (2), and the connecting mechanism is detachably connected to the reduction furnace silo (1) and the raw material barrel (2); The top of the reduction furnace silo (1) is also provided with an exhaust pipe (3), and one end of the exhaust pipe (3) away from the reduction furnace silo (1) is connected to the top of the raw material barrel (2).

2. The powder spray prevention device for a reduction furnace silo according to claim 1, characterized in that: The top of the reduction furnace bunker (1) is provided with an emptying hole (11), and the emptying pipe (3) can be snap-connected with the emptying hole (11); A perforated plate (12) is mounted on the inner top of the reduction furnace silo (1); the perforated plate (12) can cover the end surface of the emptying hole (11), and the perforated plate (12) is detachably connected to the reduction furnace silo (1).

3. The powder spray prevention device for a reduction furnace silo according to claim 2, characterized in that: A slider (13) is protruding from the top of the reduction furnace silo (1), and a slide groove is provided on the top surface of the orifice plate (12), so that the orifice plate (12) can be slidably connected to the top of the reduction furnace silo (1).

4. The powder spray prevention device for a reduction furnace silo according to claim 1, characterized in that: The drain pipe (3) comprises a straight pipe (31) and bent pipes (32) arranged at both ends of the straight pipe (31), and the bent pipes (32) are respectively connected to the top of the reduction furnace silo (1) or the top of the raw material barrel (2); The inner wall of the straight tube (31) is provided with a plurality of baffles (33), the plurality of baffles (33) are arranged at intervals in the vertical direction, and two adjacent baffles (33) are arranged on opposite sides of the inner wall of the straight tube (31).

5. The powder spray prevention device for a reduction furnace silo according to any one of claims 1 to 4, characterized in that: The connecting mechanism comprises a connecting pipe (41), the bottom end of the connecting pipe (41) can be connected to the top of the reduction furnace silo (1) through a pipe valve (42), and the top of the connecting pipe (41) can be connected to the raw material barrel (2).

6. The powder spray prevention device for a reduction furnace silo according to claim 5, characterized in that: A funnel (43) is disposed on the top of the connecting tube (41), and the tip of the funnel (43) is connected to the connecting tube (41); The top of the raw material barrel (2) is in the shape of a protruding cone, and the bottom of the raw material barrel (2) can abut against the inner wall of the round end of the funnel (43).

7. The powder spray prevention device for a reduction furnace silo according to claim 1, characterized in that: The top of the raw material barrel (2) is provided with a sealing cover (21), the drain pipe (3) is passed through the sealing cover (21), and the drain pipe (3) is communicated with the inner cavity of the raw material barrel (2).

8. The powder spray prevention device for a reduction furnace silo according to claim 1, characterized in that: A flow rate detector (51) is arranged at one end of the exhaust pipe (3) close to the reduction furnace silo (1), and the flow rate detector (51) is arranged with an external display screen (52).

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