CN218937032U - Feeder, blowing tank and blowing system - Google Patents

Abstract

The utility model relates to a feeder, a blowing tank and a blowing system, wherein the feeder comprises a distribution plate; the distribution plate is matched with the discharge port of the blowing tank and can be fixed at the bottom end of the discharge port; a plurality of conveying pipes are fixed on the bottom end surface of the distribution plate; the distribution plate is provided with a plurality of material leakage holes; the material leakage holes are in one-to-one correspondence and are communicated with the material conveying pipes; the middle part of the distribution plate is rotationally connected with a rotating shaft, and the axial direction of the rotating shaft is perpendicular to the plane of the distribution plate; the top end of the rotating shaft is sleeved with a sleeve; a swing arm is fixed on the sleeve; the swing arm is of an L-shaped structure as a whole; the swing arm comprises a first pushing bar and a second pushing bar, one ends of which are connected; one end of the first pushing strip, which is far away from the second pushing strip, is fixed on the outer wall of the sleeve; one end of the second pushing bar far away from the first pushing bar extends upwards. The rotation speed of the swing arm is regulated, so that the powder with different physical and chemical properties is sprayed out of the spraying tank at the same speed, and the spraying amount is accurately controlled.

Description

Feeder, blowing tank and blowing system

Technical Field

The utility model relates to the technical field of metal smelting treatment, in particular to a feeder, a blowing tank and a blowing system.

Background

In the smelting process of metal (such as molten iron, molten copper or molten aluminum, etc.), various powders are required to be added into the molten metal so as to lead the formed metal to meet the actual production and life requirements. In the molten iron smelting process, for example, powders such as carburant (carbon powder), deoxidizer (silicon carbide) and desulfurizing agent (magnesium powder) are added into molten iron in a molten state. The powder is stored in corresponding storage tanks respectively, the discharge ports of the storage tanks are communicated with the feed inlet of a blowing tank, and various powder is sprayed into the reduction furnace from the blowing tank.

However, the different physical and chemical properties of the various powders cause the different speeds of the powders ejected from the blowing tanks, making the blowing amount of the powders difficult to control.

Disclosure of Invention

The utility model provides a feeder, a blowing tank and a blowing system, which aim to solve the problem that the blowing amount of powder is difficult to control due to different speeds of powder sprayed from the blowing tank caused by different physical and chemical properties of various powder.

To achieve the object of the utility model a feeder is provided comprising a distribution tray; the distribution plate is matched with the discharge port of the blowing tank and can be fixed at the bottom end of the discharge port;

a plurality of conveying pipes are fixed on the bottom end surface of the distribution plate; the distribution plate is provided with a plurality of material leakage holes; the material leakage holes are in one-to-one correspondence and are communicated with the material conveying pipes;

the middle part of the distribution plate is rotationally connected with a rotating shaft, and the axial direction of the rotating shaft is perpendicular to the plane of the distribution plate; the top end of the rotating shaft is sleeved with a sleeve; a swing arm is fixed on the sleeve;

the swing arm is of an L-shaped structure as a whole; the swing arm comprises a first pushing bar and a second pushing bar, one ends of which are connected; one end of the first pushing strip, which is far away from the second pushing strip, is fixed on the outer wall of the sleeve; one end of the second pushing bar far away from the first pushing bar extends upwards.

In one embodiment, the first pushing bar and the second pushing bar are both plate-like structures.

In one embodiment, the swing arms are more than two; the more than two swing arms are uniformly distributed along the circumference of the sleeve.

In one embodiment, the bottom of the shaft is in driving connection with the driving device.

In one embodiment, the drive means comprises a motor; a speed reducer is fixed on the output shaft of the motor; the speed reducer is in transmission connection with the bottom of the rotating shaft.

In one embodiment, the first pushing bar and the second pushing bar are made of steel.

A blowing tank based on the same concept, comprising a feeder provided by any one of the embodiments described above;

the top of the blowing tank is provided with a feed inlet, and the bottom of the blowing tank is provided with a discharge outlet; the bottom end of the discharge hole is fixedly connected with the top end surface of the distribution plate;

the top end of the feed inlet is fixed with a dome valve.

In one particular embodiment, the dome valve includes a valve seat; the top end and the bottom end of the valve seat are both of an opening structure;

the inner wall of the valve seat is rotationally connected with a valve clack; the valve clack can seal the top end opening of the valve seat;

the inner wall of the top end of the valve seat is fixed with a sealing ring; when the valve clack seals the top end opening of the valve seat, the sealing ring is clamped between the valve seat and the valve clack;

the sealing ring is an inflatable sealing ring.

A blowing system based on the same concept, comprising a blowing tank provided by any one of the specific embodiments above; the device also comprises a storage tank, a primary exhaust valve, a secondary exhaust valve and an air supply device;

the storage tank is arranged above the blowing tank; the discharge port of the storage tank is communicated with the feed port of the blowing tank;

the top of the blowing tank is provided with an exhaust port; the exhaust port is sequentially communicated with the primary exhaust valve, the secondary exhaust valve and the storage tank;

the blowing tank is communicated with the air supply device.

In one embodiment, a level gauge is arranged in the blowing tank; the blowing tank is fixed on the weighing device;

the device also comprises a programmable controller and a variable frequency driver;

the programmable controller is respectively and electrically connected with the material level gauge, the weighing device and the variable frequency driver; the variable frequency driver is electrically connected with the motor.

The utility model has the beneficial effects that: according to the feeder disclosed by the utility model, the rotating shaft is arranged, the sleeve and the swing arm can be driven to rotate by rotating the rotating shaft, powder can be pushed into the material leakage hole in the rotating process of the swing arm, and the powder in the material leakage hole enters the reduction furnace through the conveying pipe under the pushing of the conveying air source. The rotation speed of the swing arm is regulated, so that the powder with different physical and chemical properties is sprayed out of the spraying tank at the same speed, and the spraying amount is accurately controlled. The first pushing strip is matched with the second pushing strip, so that an arch bridge formed at the discharge hole of the blowing tank can be effectively damaged, the possibility of blocking at the discharge hole is reduced, powder can be continuously and stably output from the discharge hole, the stability of the spraying rate is guaranteed, and the spraying quantity is accurately controlled.

Drawings

FIG. 1 is a schematic view of a blowing tank according to an embodiment of the present utility model;

FIG. 2 is a schematic view of the structure of an embodiment of the feeder in the blowing tank shown in FIG. 1;

fig. 3 is an axial cross-sectional view of an embodiment of a dome valve in the injection tank of fig. 1.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Examples of the embodiments are illustrated in the accompanying drawings, wherein like or similar symbols indicate like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model or simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," "engaged," "hinged," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1 and 2, as an embodiment of the present utility model, the dispenser 110 includes a distribution tray 111, and the distribution tray 111 is adapted to the outlet of the blowing tank 100, and has the same shape and size as the outlet of the blowing tank 100. The top end surface of the distribution tray 111 can be fixed to the bottom end of the discharge opening. Powder entering the blowing tank 100 may accumulate on the top end surface of the distribution tray 111. A plurality of delivery pipes 112 are fixed on the bottom end surface of the distribution plate 111, a plurality of material leakage holes 1111 are formed in the distribution plate 111, and the material leakage holes 1111 are through holes penetrating through the top end surface and the bottom end surface of the distribution plate 111. The material leakage holes 1111 are in one-to-one correspondence with and communicated with the material conveying pipes 112. The middle part of the distribution plate 111 is rotatably connected with a rotating shaft 113, and the axial direction of the rotating shaft 113 is perpendicular to the plane of the distribution plate 111. The top of the rotating shaft 113 is sleeved with a sleeve 114, and a swing arm 115 is fixed on the sleeve 114.

In this embodiment, the rotation of the rotating shaft 113 can drive the sleeve 114 and the swing arm 115 to rotate, and the swing arm 115 can push powder into the material leakage hole 1111 during the rotation process, and the powder in the material leakage hole 1111 enters the reduction furnace through the material conveying pipe 112 under the pushing of the conveying air source. The rotation speed of the swing arm 115 is adjusted to ensure that the powder with different physical and chemical properties is sprayed out of the spraying tank 100 at the same speed, so that the spraying amount is accurately controlled. Specifically, the swing arm 115 has an overall "L" structure. The swing arm 115 includes a first pusher bar 1151 and a second pusher bar 1152 connected at one end. One end of the first pushing bar 1151, which is far away from the second pushing bar 1152, is fixed to the outer wall of the sleeve 114, and one end of the second pushing bar 1152, which is far away from the first pushing bar 1151, extends upwards. The first pushing bar 1151 and the second pushing bar 1152 can effectively destroy a bridge formed at the discharge port of the blowing tank 100, reduce the possibility of blocking at the discharge port, enable powder to be continuously and stably output from the leakage hole 1111, ensure the stability of the ejection rate, and further enable the ejection rate to be accurately controlled. The device is suitable for various powdery materials or granular materials.

In an embodiment of the present utility model, the first pushing bar 1151 and the second pushing bar 1152 are both plate-shaped structures, which effectively reduces the blocking force caused by the rotation of the first pushing bar 1151 and the second pushing bar 1152, and simultaneously makes the powder stacked on the distribution tray 111 easier to break up. The number of the swing arms 115 is more than two, and the more than two swing arms 115 are uniformly distributed along the circumferential direction of the sleeve 114. The bottom of the rotating shaft 113 is in transmission connection with the driving device 116, specifically, the driving device 116 comprises a motor 1161, a speed reducer 1162 is fixed on an output shaft of the motor 1161, and the speed reducer 1162 is in transmission connection with the bottom of the rotating shaft 113. The motor 1161 drives the rotating shaft 113 to rotate through the speed reducer 1162, wherein the motor 1161 is a variable frequency motor, and the programmable controller precisely controls the rotating speed of an output shaft of the variable frequency motor through the variable frequency driver, so that precise control over the rotating speed of the rotating shaft 113 is achieved, and precise control over the blowing quantity is achieved. The first pushing bar 1151 and the second pushing bar 1152 are made of steel, and have strong corrosion resistance and wear resistance.

Referring to fig. 1, fig. 2 and fig. 3, the present utility model further provides a blowing tank 100, which includes a feeder 110 provided in any of the foregoing embodiments, where a feed inlet is provided at a top of the blowing tank 100, and a discharge outlet is provided at a bottom of the blowing tank. The bottom of the discharge port is fixedly connected with the top end surface of the distribution plate 111. The feeder 110 allows the powder having different physical and chemical properties to be ejected from the blowing tank 100 at the same speed, thereby precisely controlling the amount of the powder to be blown. The top of the feed inlet is fixed with a dome valve 120, and the dome valve 120 enables the blowing tank 100 to contain more powder materials, thereby improving the space utilization.

Specifically, the dome valve 120 includes a valve seat 121, and both the top and bottom ends of the valve seat 121 are open structures. The inner wall of the valve seat 121 is rotatably connected with a valve flap 122, and the valve flap 122 can seal the top opening of the valve seat 121. Here, it should be noted that the connection structure between the valve clack 122 and the valve seat 121 and the driving principle of the valve clack 122 are all conventional technologies, and are not described herein. When the dome valve 120 is opened, the valve seat 121 is not in direct contact with the flap 122, greatly reducing wear. A seal ring 123 is fixed to the inner wall of the top end of the valve seat 121, and when the valve flap 122 seals the top end opening of the valve seat 121, the seal ring 123 is sandwiched between the valve seat 121 and the valve flap 122. Specifically, the sealing ring 123 is an inflatable sealing ring (similar to a life buoy structure), the inside of the sealing ring 123 is communicated with the air supply device, and when the valve clack 122 completely seals the top end opening of the valve seat 121, the air supply device continuously supplies air for the sealing ring 123, so that the sealing ring 123 gradually expands, and the air tightness between the valve seat 121 and the valve clack 122 is effectively improved. When the dome valve 120 is opened, the gas in the sealing ring 123 is gradually released, so that abrasion between the valve clack 122 and the sealing ring 123 during the movement process is effectively avoided. Wherein, the rotation of the valve clack 122 is completed by a valve clack driving motor, and the valve clack driving motor and the air charging device are electrically connected with a programmable controller to control whether the air supply device and the valve clack 122 driving motor 1161 work or not.

The utility model also provides a blowing system, which comprises the blowing tank 100 provided by any one of the specific embodiments, a storage tank, a primary exhaust valve, a secondary exhaust valve and an air supply device. The storage tank is located the top of jetting jar 100, and the discharge gate of storage tank communicates with the feed inlet of jetting jar 100. Specifically, the blowing tank 100 and the storage tank are connected by adopting a sealed flexible pipe, a manual gate valve and a pneumatic butterfly valve are arranged between the flexible pipe and the storage tank, and when the material level in the blowing tank reaches the lower limit, the pneumatic butterfly valve is opened; when the material level in the blowing tank reaches the preset material level, the pneumatic butterfly valve is closed. An exhaust port is arranged at the top of the blowing tank 100 and is sequentially communicated with a primary exhaust valve, a secondary exhaust valve and a storage tank. In the process of feeding the blowing tank 100, air in the blowing tank 100 sequentially enters the storage tank through the exhaust port, the primary exhaust valve and the secondary exhaust valve, so that the pressure value in the blowing tank 100 is atmospheric pressure before the next feeding process of the blowing tank 100. And the two-stage exhaust mode is adopted, so that the exhaust speed is effectively reduced, and the scouring abrasion of gas to the exhaust valve and the exhaust pipeline is reduced. The blowing tank 100 communicates with an air supply that is capable of inflating the blowing tank 100 to provide a source of delivery air. The four storage tanks are all arranged above the blowing tank 100 and are respectively used for containing different powders. The bag breaker and the dust collector are fixed at the feed inlet of each storage tank, and the fluidizer is fixed at the discharge outlet of each storage tank, and specifically, the fluidizer can be a fluidization rod. A level gauge is arranged in the blowing tank 100, and the blowing tank 100 is fixed on a weighing device. The weighing device is in the prior art and mainly comprises three cantilever beam resistance sensors, a junction box and an intelligent weight transmitter. The blowing system also comprises a programmable controller and a variable frequency driver, wherein the programmable controller is respectively and electrically connected with the material level gauge, the weighing device and the variable frequency driver. The level gauge is capable of detecting the level of the material in the injection tank 100 and transmitting a level signal to the programmable controller. The scale is capable of weighing the blowing tank 100 and communicating the weight value to a programmable controller. The variable frequency drive is electrically connected to the motor 1161. The programmable controller is capable of controlling the rotational speed of the output shaft of the motor 1161 via a variable frequency drive.

The operation process of the blowing system is as follows:

1) Opening a primary exhaust valve and a secondary exhaust valve to release the pressure of the blowing tank 100;

2) After the pressure release of the blowing tank 100 is completed, the outlet valve at the discharge port of the storage tank and the dome valve 120 at the feed port of the blowing tank 100 are opened. Simultaneously, a fluidizer positioned at the discharge port of the storage tank is started. Powder material flows from the storage tank into the blowing tank 100 under the action of gravity;

3) When the material level of the injection tank 100 is high, closing the outlet valve of the storage tank, the primary exhaust valve, the secondary exhaust valve and the dome valve 120 of the feed inlet of the injection tank 100, and simultaneously, opening the air supply device to charge the injection tank 100 until the pressure in the injection tank 100 is the same as the pressure in the conveying pipe 112;

4) The dome valve 120 of the discharge port of the blowing tank 100 is opened, the feeder 110 is opened, and the air supply device is used as an air conveying air source to drive the powder in the leakage hole 1111 into the conveying pipe. The powder in the delivery tube is delivered by opening a delivery gas source communicating with the delivery tube 112. When the weigh scale detects that the powder in the blowing tank 100 has been delivered, the feeder 110 stops. The discharge valve at the discharge port of the blowing tank 100 is closed and the next cycle is waited for.

In some of these embodiments, a lance lifting device is also included. The spray gun lifting device comprises a bracket, a guide rail and a pulley driving motor which are vertically arranged are fixed on the bracket, a pulley is connected to the guide rail in a sliding manner, a spray gun is fixed on the pulley, and the pulley driving motor drives the pulley to move along the guide rail through a chain wheel and a chain so as to drive the spray gun to ascend or descend. The pulley is also fixed with a driving oil cylinder, and an output shaft of the driving air cylinder is fixedly connected with the spray gun so as to drive the spray gun to rotate. Wherein the lance communicates with the delivery conduit to facilitate injection of the powder into the molten metal interior or surface.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "examples," "particular examples," "one particular embodiment," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing description is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, within the scope of the present utility model, should be covered by the protection scope of the present utility model by equally replacing or changing the technical scheme and the inventive concept thereof.

Claims (10)

1. A feeder, comprising:

a distribution tray; the distribution plate is matched with a discharge hole of the blowing tank and can be fixed at the bottom end of the discharge hole;

a plurality of conveying pipes are fixed on the bottom end surface of the distribution plate; the distribution plate is provided with a plurality of material leakage holes; the material leakage holes are in one-to-one correspondence and are communicated with the material conveying pipes;

the middle part of the distribution plate is rotationally connected with a rotating shaft, and the axial direction of the rotating shaft is perpendicular to the plane of the distribution plate; the top end of the rotating shaft is sleeved with a sleeve; a swing arm is fixed on the sleeve;

the swing arm is of an L-shaped structure as a whole; the swing arm comprises a first pushing strip and a second pushing strip, wherein one end of the first pushing strip and one end of the second pushing strip are connected; one end of the first pushing strip, which is far away from the second pushing strip, is fixed on the outer wall of the sleeve; the second pushing bar extends upwards away from one end of the first pushing bar.

2. The feeder of claim 1, wherein the first pusher bar and the second pusher bar are each plate-like structures.

3. The feeder of claim 1, wherein the swing arms are more than two; more than two swing arms are uniformly distributed along the circumferential direction of the sleeve.

4. Feeder according to claim 1, characterized in that the bottom of the shaft is in driving connection with the drive means.

5. The feeder of claim 4, wherein the drive means comprises a motor; a speed reducer is fixed on an output shaft of the motor; the speed reducer is in transmission connection with the bottom of the rotating shaft.

6. The feeder of claim 1, wherein the first pusher bar and the second pusher bar are steel.

7. A blowing tank comprising a feeder according to any one of claims 1 to 6;

the top of the blowing tank is provided with a feed inlet, and the bottom of the blowing tank is provided with a discharge outlet; the bottom end of the discharge hole is fixedly connected with the top end surface of the distribution plate;

and a dome valve is fixed at the top end of the feed inlet.

8. The blowing tank of claim 7 wherein the dome valve comprises a valve seat; the top end and the bottom end of the valve seat are both of an opening structure;

the inner wall of the valve seat is rotationally connected with a valve clack; the valve clack can seal the top end opening of the valve seat;

a sealing ring is fixed on the inner wall of the top end of the valve seat; when the valve clack seals the top end opening of the valve seat, the sealing ring is clamped between the valve seat and the valve clack;

the sealing ring is an inflatable sealing ring.

9. A blowing system comprising the blowing tank of claim 7; the device also comprises a storage tank, a primary exhaust valve, a secondary exhaust valve and an air supply device;

the storage tank is arranged above the blowing tank; the discharge port of the storage tank is communicated with the feed port of the blowing tank;

the top of the blowing tank is provided with an exhaust port; the exhaust port is sequentially communicated with the primary exhaust valve, the secondary exhaust valve and the storage tank;

the blowing tank is communicated with the air supply device.

10. The blowing system of claim 9 wherein a level gauge is provided in the blowing tank; the blowing tank is fixed on the weighing device;

the device also comprises a programmable controller and a variable frequency driver;

the programmable controller is respectively and electrically connected with the level gauge, the weighing device and the variable frequency driver; the variable frequency driver is electrically connected with the motor.

Images