CN221852951U - A finished pellet silo unloading device - Google Patents

Abstract

The utility model discloses a finished product pellet bin blanking device, wherein a wear-resistant lining plate is fixed on the inner wall of a blanking straight pipe through bolts; each valve clack comprises two side plates and a bottom plate fixed between the bottom ends of the two side plates, and the top ends of the two side plates are connected to the corresponding side walls of the valve body in a swinging way; when the two valve clacks are closed, the two bottom plates are symmetrically buckled at the bottom end of the valve body, and one valve clack is connected with a driving assembly. The advantages are that: when the driving handle is pulled downwards, the balancing weight is lifted upwards, the valve clack connected with the driving frame is opened, and simultaneously, in the process of meshing transmission of the two gears, the other valve clack is driven to be opened synchronously, so that the discharging valve is opened, and finished pellets fall into a transport vehicle below; the wear-resistant lining plates are fixed on the inner wall of the blanking straight pipe, the inner wall of the valve body and the bottom plate through bolts, so that the wear of finished pellets on the blanking straight pipe and the blanking valve is slowed down, and the service life is prolonged.

Description

A finished pellet silo unloading device

Technical field:

The utility model relates to the technical field of blast furnace ironmaking equipment, in particular to a finished pellet silo unloading device.

Background technology:

Pellet products are used for steelmaking and direct reduction ironmaking. Pellet ore has good metallurgical properties, uniform particle size, many micropores, good reducibility, high strength, which is conducive to strengthening blast furnace smelting. The general process of pellet production is raw material preparation, batching, mixing (drying), pelletizing, laying, roasting, cooling, and finished product output.

Among them, when the finished pellets are discharged from the silo along the discharge straight pipe to the transport vehicle, the temperature of the finished pellets is still high and they flow along the discharge straight pipe in the form of quicksand, which causes serious wear on the discharge straight pipe and the gate valve on the discharge straight pipe. A set of them needs to be replaced about every 6 months, which not only affects production but also has high replacement costs. In addition, because the finished pellets in the silo are continuously received by multiple transport vehicles alternately, the gate valve needs to be opened and closed alternately, which further accelerates its damage and shortens its service life. In addition, the gate valve has a poor opening and closing effect, which affects the efficiency of loading operations.

Utility model content:

The utility model aims to provide a finished pellet silo unloading device which can improve operation efficiency and reduce cost.

The utility model is implemented by the following technical scheme: a finished pellet silo unloading device, which includes a unloading straight pipe connected to the discharge port of the silo, and a discharge valve installed on the unloading straight pipe; a wear-resistant lining is fixed to the inner wall of the unloading straight pipe by bolts; the discharge valve includes a cylindrical valve body, and two valve flaps swingingly buckled at the bottom end of the valve body, and the top end of the valve body is fixed to the unloading port of the unloading straight pipe through a flange flange; each of the valve flaps includes two side plates and a bottom plate fixed between the bottom ends of the two side plates, and the top ends of the two side plates are swingably connected to the corresponding side walls of the valve body; when the two valve flaps are closed, the two bottom plates are symmetrically buckled at the bottom end of the valve body, and a driving component is connected to one of the valve flaps.

Furthermore, the cross section of the valve body is rectangular, and the bottom end of the valve body is "V"-shaped; when the two valve flaps are closed, the two bottom plates are in a "V" shape that matches the bottom end of the valve body.

Furthermore, a support shaft corresponding to the two side plates of each valve flap is vertically fixed on the outer wall of the valve body, and the two support shafts corresponding to the two side plates of each valve flap are coaxially arranged; the top end of one of the side plates is slidably mounted on a corresponding support shaft, and the top end of the other side plate is fixed with a gear mounted on the other support shaft, and the gears of the two valve flaps are on the same side and mesh with each other.

Furthermore, a blocking piece is fixed to the end of the support shaft by means of screws.

Furthermore, the driving assembly includes a driving frame, a counterweight block and a driving handle; the outer walls of the two side panels of one of the valve flaps are correspondingly connected to the two sides of the driving frame through a connecting block, the counterweight block is fixed to one end of the driving frame, and the driving handle is fixed to the other end of the driving frame.

Furthermore, the end of the driving handle is connected to a pull rod extending downward.

Furthermore, it also includes a dust hood covered on the discharge valve, the top of the dust hood is fixedly connected to the outer wall of the discharge straight pipe; a notch is opened on the dust hood, and the driving handle passes through the notch and is placed outside the dust hood.

Furthermore, a drooping dust-blocking soft curtain is fixed to the bottom edge of the dust collecting hood.

The advantages of the utility model are as follows: when the driving handle is pulled downward to lift the counterweight block upward, the valve flap connected to the driving frame opens, and at the same time, during the transmission process of the two gears meshing, the other valve flap is driven to open synchronously, thereby opening the discharge valve, and the finished pellets fall out into the transport vehicle below; when it needs to be closed, just release the driving handle, and the discharge valve will automatically close under the deadweight of the counterweight block.

Wear-resistant linings are fixed to the inner wall of the discharge straight pipe, the inner wall of the valve body and the bottom plate by bolts, which reduces the wear of the finished pellets on the discharge straight pipe and the discharge valve, prolongs the service life and reduces the replacement cost.

Description of the drawings:

FIG1 is a schematic structural diagram of the utility model.

FIG. 2 is a schematic diagram of the structure of the discharge valve and the drive assembly of the utility model.

FIG3 is a cross-sectional view taken along line A-A in FIG2 .

The markings of the components in the accompanying drawings are as follows: silo 1, discharge straight pipe 2, discharge valve 3, valve body 3.1, valve disc 3.2, side plate 3.21, bottom plate 3.22, flange 3.3, wear-resistant lining 4, drive assembly 5, drive frame 5.1, counterweight block 5.2, drive handle 5.3, connecting block 5.4, pull rod 5.5, support shaft 5.6, gear 5.7, baffle 5.8, dust hood 9, notch 9.1, dust collection pipe 10, induced draft fan 11, dust shield curtain 12.

Specific implementation method:

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

In the description of the present invention, it should be noted that the terms "center", "up", "down", "front", "back", "top", "bottom", "left", "right", "vertical", "horizontal", "inside" and "outside" etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

As shown in Figures 1 to 3, this embodiment provides a finished pellet silo unloading device, which includes a unloading straight pipe 2 connected to the discharge port of the silo 1, and a discharge valve 3 installed on the unloading straight pipe 2. After the discharge valve 3 is opened, the finished pellets in the silo 1 fall along the unloading straight pipe 2; the discharge valve 3 includes a cylindrical valve body 3.1, and two valve flaps 3.2 swingably engaged with the bottom end of the valve body 3.1. The cross-section of the valve body 3.1 is rectangular, and the top of the valve body 3.1 is fixed to the unloading port of the unloading straight pipe 2 through a flange flange 3.3.

Each valve flap 3.2 includes two side plates 3.21 and a bottom plate 3.22 fixed between the bottom ends of the two side plates 3.21. The top ends of the two side plates 3.21 are swingably connected to the corresponding side walls of the valve body 3.1. Specifically, a support shaft 5.6 corresponding to the two side plates 3.21 of each valve flap 3.2 is vertically fixed on the outer wall of the valve body 3.1. The two support shafts 5.6 corresponding to the two side plates 3.21 of each valve flap 3.2 are coaxially arranged. The top end of one side plate 3.21 is slidably sleeved on a corresponding support shaft 5.6, and the top end of the other side plate 3.21 is slidably sleeved on a corresponding support shaft 5.6. A gear 5.7 sleeved on another supporting shaft 5.6 is fixed to the top of the plate 3.21, and the gears 5.7 of the two valve flaps 3.2 are on the same side and mesh with each other; by driving one of the valve flaps 3.2 to open and close, the other valve flap 3.2 can be driven to open and close synchronously through the meshing gears 5.7, thereby realizing the opening and closing of the discharge valve 3; a baffle 5.8 is fixed to the end of the supporting shaft 5.6 by screws, which effectively limits the top of the side plate 3.21, prevents the side plate 3.21 from falling off along the supporting shaft 5.6 after being stressed, and ensures normal opening and closing action.

When the two valve flaps 3.2 are closed, the two bottom plates 3.22 are symmetrically buckled at the bottom end of the valve body 3.1. In this embodiment, the bottom end of the valve body 3.1 is in a "V" shape. When the two valve flaps 3.2 are closed, the two bottom plates 3.22 are in a "V" shape that matches the bottom end of the valve body 3.1; this is more conducive to the concentration of finished pellets in the middle along the inclined bottom plate 3.22, and in the process of opening the valve flaps 3.2, it is conducive to the rapid unloading of finished pellets and improves the loading efficiency; and compared with the gate valve, the discharge valve 3 is more convenient to open and close, saving time and effort.

A driving assembly 5 is connected to one of the valve flaps 3.2, and the driving assembly 5 includes a driving frame 5.1, a counterweight block 5.2 and a driving handle 5.3; the outer walls of the two side panels 3.21 of one of the valve flaps 3.2 are correspondingly connected to the two sides of the driving frame 5.1 through a connecting block 5.4, a counterweight block 5.2 is fixed to one end of the driving frame 5.1, and a driving handle 5.3 is fixed to the other end of the driving frame 5.1. Under the dead weight of the counterweight block 5.2, the valve flap 3.2 connected to the driving frame 5.1 is closed, and the other valve flap 3.2 is also closed. When the driving handle 5.3 is pulled downward, When the counterweight 5.2 is lifted upward, the valve flap 3.2 connected to the driving frame 5.1 opens, and during the meshing transmission process of the two gears 5.7, the other valve flap 3.2 is driven to open synchronously, thereby opening the discharge valve 3, and the finished pellets fall into the transport vehicle below; a downwardly extending pull rod 5.5 is connected to the end of the driving handle 5.3, so that the staff can stand on the ground and pull the pull rod 5.5 downward to drive the discharge valve 3 to open. When it needs to be closed, just loosen the pull rod 5.5, and the discharge valve 3 will automatically close under the dead weight of the counterweight 5.2.

Wear-resistant lining plates 4 are fixed to the inner wall of the discharge straight pipe 2, the inner wall of the valve body 3.1 and the bottom plate 3.22 by bolts, which reduces the wear of the finished pellets on the discharge straight pipe 2 and the discharge valve 3, extends the service life and reduces the replacement cost. The replacement or maintenance of the discharge straight pipe 2 and the discharge valve 3 is extended from every 6 months to once a year.

It also includes a dust collecting hood 9 covered on the discharge valve 3, and the top of the dust collecting hood 9 is fixedly connected to the outer wall of the discharge straight pipe 2; a notch 9.1 is opened on the dust collecting hood 9, and the driving handle 5.3 is placed outside the dust collecting hood 9 through the notch 9.1, and the top of the dust collecting hood 9 is connected with the inlet of the induced draft fan 11 through the dust collecting pipe 10. During the falling process of the finished pellets, there is dust. Under the negative pressure of the induced draft fan 11, the dust passes through the dust collecting hood 9 along the dust collecting pipe 10 and enters the subsequent dust collecting device to avoid environmental pollution; a drooping dust-proof soft curtain 12 is fixed to the bottom edge of the dust collecting hood 9 to further extend the dust collection range, while ensuring that the transport vehicle can pass through the dust-proof soft curtain 12 and stop under the discharge valve 3.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. A blanking device of a finished pellet bin comprises a blanking straight pipe connected with a discharge hole of the bin and a blanking valve arranged on the blanking straight pipe;

the device is characterized in that the inner wall of the blanking straight pipe is fixed with a wear-resistant lining plate through bolts;

the discharging valve comprises a cylindrical valve body and two valve clacks which are buckled at the bottom end of the valve body in a swinging way, and the top end of the valve body is in butt joint fixation with a discharging opening of the discharging straight pipe through a flange;

Each valve clack comprises two side plates and a bottom plate fixed between the bottom ends of the two side plates, and the top ends of the two side plates are connected to the corresponding side walls of the valve body in a swinging way; when the two valve clacks are closed, the two bottom plates are symmetrically buckled at the bottom end of the valve body, and one valve clack is connected with a driving assembly.

2. The finished pellet bin blanking device according to claim 1, wherein the cross section of the valve body is rectangular, and the bottom end of the valve body is V-shaped; when the two valve clacks are closed, the two bottom plates are in a V shape matched with the bottom end of the valve body.

3. The finished pellet bin blanking device according to claim 1, wherein a supporting shaft corresponding to two side plates of each valve clack is vertically fixed on the outer wall of the valve body, and the two supporting shafts corresponding to the two side plates of each valve clack are coaxially arranged;

The top end of one side plate is slidably sleeved on a corresponding supporting shaft, the top end of the other side plate is fixedly sleeved with a gear on the other supporting shaft, and the gears of the two valve clacks are on the same side and meshed with each other.

4. A finished pellet bin blanking device according to claim 3, wherein the end of the support shaft is fixed with a baffle plate by a screw.

5. The finished pellet bin blanking device according to any one of claims 1 to 4, wherein the driving assembly comprises a driving frame, a balancing weight and a driving handle; the outer walls of the two side plates of one valve clack are correspondingly connected with two sides of the driving frame through connecting blocks, one end of the driving frame is fixed with the balancing weight, and the other end of the driving frame is fixed with the driving handle.

6. The finished pellet bin blanking device of claim 5, wherein the end of the driving handle is connected with a pull rod extending downwards.

7. The finished pellet bin blanking device according to claim 5, further comprising a dust collection cover covered on the blanking valve, wherein the top end of the dust collection cover is fixedly connected with the outer wall of the blanking straight pipe; the dust collection cover is provided with a notch, and the driving handle penetrates through the notch and is arranged outside the dust collection cover.

8. The finished pellet bin blanking device of claim 7, wherein a drooping dust blocking soft curtain is fixed at the bottom end edge of the dust collection cover.