CN114199019A - Rotary hearth furnace ejection of compact weighing device - Google Patents

Abstract

The invention discloses a rotary hearth furnace discharging weighing device, belongs to the technical field of rotary hearth furnace material weighing and metering equipment, and solves the technical problem that the existing rotary hearth furnace process cannot measure metallized pellets in real time. The weighing device is arranged at a discharge port of the rotary hearth furnace and comprises a first scale, and the first scale comprises a first shell, a partition plate, a guide plate mechanism and a weighing mechanism; the top of the first shell is provided with a feeding hole, the bottom of the first shell is provided with a discharging hole, and the partition plate is vertically arranged in the first shell so as to divide the lower part of the inner cavity of the first shell into two weighing cavities; the two guide plate mechanisms alternately open and close the two weighing cavities; the two weighing mechanisms respectively weigh the materials in the two weighing cavities. The invention can measure the screened materials in real time when the rotary hearth furnace continuously discharges materials, has small occupied area, can be easily integrated into the existing rotary hearth furnace process flow line, and has high adaptability.

Description

Rotary hearth furnace ejection of compact weighing device

Technical Field

The invention belongs to the technical field of rotary hearth furnace material weighing and metering equipment, and particularly relates to a rotary hearth furnace discharging and weighing device.

Background

In the existing process for reducing iron ore into metallized pellets by using a rotary hearth furnace, the metallized pellets obtained by production have higher temperature, are directly sent to storage after being screened by a vibrating screen, and are weighed after being cooled or before being further processed, so that field operators cannot visually judge the conversion condition of the metallized pellets in the rotary hearth furnace in real time.

Disclosure of Invention

This application aims at having solved the technical problem that current rotary hearth furnace technology can't real-time measurement metallized pellet to a certain extent at least, for this reason, this application provides a rotary hearth furnace ejection of compact weighing device.

The technical scheme of the application is as follows:

a discharging weighing device of a rotary hearth furnace is arranged at a discharging port of the rotary hearth furnace and comprises a first scale, wherein the first scale comprises a first shell, a partition plate, a guide plate mechanism and a weighing mechanism; the top of the first shell is provided with a feeding hole, the bottom of the first shell is provided with a discharging hole, and the partition plate is vertically arranged in the first shell so as to divide the lower part of the inner cavity of the first shell into a first weighing cavity and a second weighing cavity;

the two guide plate mechanisms are oppositely arranged in the first shell, one guide plate mechanism is used for operably opening and closing the feeding end of the first weighing cavity, the other guide plate mechanism is used for operably opening and closing the feeding end of the second weighing cavity, and the two guide plate mechanisms are alternately opened and closed;

the two weighing mechanisms are arranged at the bottom in the first shell, and one weighing mechanism can operatively open and close the discharge end of the first weighing cavity; the other weighing mechanism can operatively open and close the discharge end of the second weighing cavity; and each weighing mechanism is provided with a weight sensor.

In some embodiments, the guide plate mechanism includes two guide plates, one end of each of the two guide plates is hinged to two opposite side walls of the first housing, the other end of each of the two guide plates is operatively abutted against the top end of the partition plate, and the hinge joint of the guide plate and the first housing is higher than the top end of the partition plate.

In some embodiments, the guide plate mechanism further comprises a hydraulic cylinder, the hydraulic cylinder is arranged below the guide plate, a cylinder seat of the hydraulic cylinder is hinged on the side wall in the first shell, and an end part of a piston rod of the hydraulic cylinder is hinged on the bottom surface of the guide plate.

In some embodiments, the weighing mechanism comprises a frame and a door plate, the frame is fixedly connected with both the inner wall of the first shell and one side wall of the partition plate, a discharge hole is formed in the middle of the frame, the door plate is arranged on the frame, and the door plate is operable to open and close the discharge hole of the frame; at least one weight sensor is disposed on the frame.

In some embodiments, the frame is further provided with at least one support rod, and both ends of the at least one support rod are fixedly connected with the frame.

In some embodiments, the top of the support rod is provided with a bevel.

In some embodiments, the support rod comprises two oppositely arranged support plates, and the top ends of the two support plates are fixedly connected.

In some embodiments, four weight sensors are disposed on the weighing mechanism, and the four weight sensors are spaced apart on the frame.

In some embodiments, the rotary hearth furnace discharging and weighing device further comprises a second scale, the second scale comprises a second shell and a rotating shaft, the second shell is cylindrical, the axis of the second shell is horizontal, a feeding hole is formed in the top of the outer annular wall of the second shell, a discharging hole is formed in the bottom of the outer annular wall of the second shell, and the discharging hole of the second shell is communicated with the feeding hole of the first shell;

the rotating shaft can be arranged in the second shell in a rotating mode around a shaft, the axis of the rotating shaft and the axis of the second shell are arranged on the same straight line, the rotating shaft is provided with at least three fan blades at intervals along the circumferential direction of the rotating shaft, each fan blade is provided with a weight sensor, the at least three fan blades and the rotating shaft divide an inner cavity of the second shell into at least three storage spaces, and each storage space is not communicated with a discharge hole of the second shell when being weighed.

In some embodiments, the fan blades are made of a heat-resistant material.

The embodiment of the application has at least the following beneficial effects:

according to the technical scheme, the weighing device disclosed by the invention has the advantages that materials discharged by the rotary hearth furnace can enter the first weighing cavity and the second weighing cavity respectively through the two guide plate mechanisms which are opened alternately, when the materials continuously enter the first weighing cavity, the weighing mechanism in the second weighing cavity weighs the materials in the second weighing cavity, after the materials in the second weighing cavity are discharged after weighing is finished, the materials are collected by the second weighing cavity, the weighing mechanism in the first weighing cavity weighs and discharges the materials of the metallized pellets in the first weighing cavity, so that the screened materials are measured in real time when the rotary hearth furnace continuously discharges, and operators can observe and judge the conversion condition of the rotary hearth furnace; and weighing device vertical setting, this makes whole weighing device's area little, can easily incorporate into current rotary hearth furnace process line and suitability height.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic diagram showing a weighing apparatus according to an embodiment of the present application;

FIG. 2 shows an enlarged schematic view at A in FIG. 1;

the labels in the figure are: 1-a first scale, 11-a first shell, 12-a partition board, 13-a guide plate mechanism, 131-a guide plate, 132-a hydraulic cylinder, 14-a weighing mechanism, 141-a frame, 142-an opening and closing door plate, 143-a discharge hole, 144-a support rod, 145-a draw hook, 2-a second scale, 21-a second shell, 22-a rotating shaft and 23-a fan blade.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

FIG. 1 is a schematic diagram showing a weighing apparatus according to an embodiment of the present application; fig. 2 shows an enlarged schematic view at a in fig. 1.

The application is described below with reference to specific embodiments in conjunction with the following drawings:

as shown in FIG. 1, this embodiment provides a rotary hearth furnace ejection of compact weighing device, and weighing device sets up the discharge gate department at the rotary hearth furnace, and many including the shale shaker in the rotary hearth furnace technology be used for sieving the metallized pellet, and the metallized pellet after the screening is deposited and is deposited storage bin, and from this, the weighing device of this embodiment can set up the pan feeding end at storage bin to the metallized pellet after the rotary hearth furnace ejection of compact and the screening lasts and weighs.

The weighing apparatus comprises a first scale 1, and referring to fig. 1 and 2, the first scale 1 comprises a first housing 11, a partition plate 12, a guide plate mechanism 13 and a weighing mechanism 14; the top of first casing 11 is equipped with the feed inlet, and the feed inlet of first casing 11 and the discharge gate of second casing 21 communicate, and the bottom of first casing 11 is equipped with the discharge gate, and baffle 12 is vertical to be set up in first casing 11 to separate two weighing cavities with the lower part of the inner chamber of first casing 11, two weighing cavities are first weighing cavity and second weighing cavity respectively, can understand, and the first weighing cavity and the second weighing cavity that are located first casing 11 all have feed end and discharge end.

The two guide plate mechanisms 13 are oppositely arranged in the first shell 11, one guide plate mechanism 13 is used for opening and closing the feeding end of the first weighing cavity in an operable manner, and the other guide plate mechanism 13 is used for opening and closing the feeding end of the second weighing cavity in an operable manner; the two guide plate mechanisms 13 are alternately opened and closed in the weighing process, so that the materials can respectively enter the first weighing cavity and the second weighing cavity.

Two weighing mechanisms 14 are arranged at the bottom in the first shell 11, and one weighing mechanism 14 can operatively open and close the discharge end of the first weighing cavity; the other weighing mechanism 14 can operatively open and close the discharge end of the second weighing cavity; each weighing mechanism 14 is provided with a weight sensor.

Specifically, in consideration of the sealing performance of the guide plate mechanism 13 and the weighing mechanism 14 to the first weighing chamber and the second weighing chamber, the first housing 11 is a rectangular parallelepiped, and thus, both the first weighing chamber and the second weighing chamber are rectangular cavities. Two deflector mechanism 13 are first deflector mechanism and second deflector mechanism respectively, and first deflector mechanism is the feed end in the first weighing chamber of operationally opening and shutting, and the feed end in the second weighing chamber of operationally opening and shutting of second deflector mechanism, and two weighing mechanism 14 are first weighing mechanism and second weighing mechanism respectively, and the discharge end in the first weighing chamber of operationally opening and shutting of first weighing mechanism, the discharge end in the second weighing chamber of operationally opening and shutting of second weighing mechanism. When a material enters a feeding port of the first weighing device 1, the first weighing mechanism and the second weighing mechanism are both in a closed state, the first guide plate mechanism opens a feeding end of the first weighing cavity, the second guide plate mechanism closes a feeding end of the second weighing cavity, the material starts to be fed in and only enters the first weighing cavity, after a period of time, the first guide plate mechanism closes the feeding end of the first weighing cavity, the second guide plate mechanism opens the feeding end of the second weighing cavity so that the material only enters the second weighing cavity, at the moment, the material in the first weighing cavity is not continuously fed, after the weight of the material in the first weighing cavity can be accurately measured by a weight sensor on the first weighing mechanism, the first weighing mechanism is driven to open a discharging end of the first weighing cavity, after the material in the first weighing cavity is discharged, the first weighing mechanism is driven to close the feeding end of the first weighing cavity, and during the period of time, the materials entering from the feeding hole of the first shell 11 all enter the second weighing cavity; the first guide plate mechanism opens the feeding end of the first weighing cavity, the second guide plate mechanism closes the feeding end of the second weighing cavity, and after the second weighing cavity does not feed any more, the weight sensor on the second weighing mechanism can obtain the weight of the material in the second weighing cavity. Therefore, on-line measurement of the weight of the material can be realized under the condition of uninterrupted material transportation.

Considering that there may be material residue in the first weighing cavity and the second weighing cavity, the accurate measurement value of the weight sensor should be the weight of the weighing cavity before discharging minus the weight of the weighing cavity before feeding. In addition, the weighing device is vertically arranged, so that the occupied area of the whole weighing device is small, and the whole weighing device can be easily incorporated into the existing rotary hearth furnace process line.

Referring to fig. 1, in particular, the guide plate mechanism 13 includes two guide plates 131, two guide plates 131 are respectively hinged on two opposite side walls in the first housing 11, and the other ends of the two guide plates 131 are both operatively abutted against the top end of the partition plate 12. The hinged connection of the guides 131 to the first housing 11 is higher than the top end of the partition 12. it will be appreciated that both guides 131 are inclined, with the top surface of one guide 131 facing the top surface of the other guide 131, and that when one guide mechanism 13 closes the feed end of the weighing chamber in which it is located, the top surface of the guide 131 has a guiding effect, which helps material to fall into the weighing chamber with the feed end open.

As a structure for driving the guide plate 131 to open and close, the guide plate mechanism 13 further includes a hydraulic cylinder 132, the hydraulic cylinder 132 is disposed below the guide plate 131, a cylinder seat of the hydraulic cylinder 132 is hinged to a side wall of the first housing 11, an end of a piston rod of the hydraulic cylinder 132 is hinged to a bottom surface of the guide plate 131, and the piston rod of the hydraulic cylinder 132 extends and retracts to drive the guide plate 131 to rotate around the hinge, so that the guide plate 131 is close to or far away from a top end of the partition plate 12, thereby opening and closing a weighing cavity in which the guide plate mechanism 13 is located.

Referring to fig. 1 and 2, the weighing mechanism 14 includes a frame 141 and a door plate, the frame 141 is fixedly connected to both the inner wall of the first housing 11 and a side wall of the partition 12, so that the weighing mechanism 14 can seal the discharge end of the weighing chamber in which it is located; at least one weight sensor is provided on the frame 141. Considering that the materials are not regularly stacked when stacked in the weighing cavity, the weighing mechanism 14 in this embodiment is provided with four weight sensors to reduce measurement errors, the four weight sensors are arranged on the frame 141 at intervals, as a more preferable embodiment, the four weight sensors are respectively arranged at four corners of the frame 141, and the frame 141 is provided with interlayers for installing the weight sensors, so that the weight sensors can accurately detect weight data and avoid the materials directly impacting the weight sensors.

The door plant sets up on frame 141, and the door plant is operable to be opened and shut to the material in the intracavity is weighed in the release, and the material directly piles up on frame 141 and door plant, and from this, the door plant can include a door plant 142 that opens and shuts, the lateral wall that baffle 12 was kept away from to frame 141 is equipped with first through-hole, and other three lateral walls of frame 141 are equipped with the spout of mutual intercommunication, take a photograph in the second through-hole with first through-hole matching on the first casing 11, but make door plant 142 that opens and shuts level setting on frame 141, and door plant 142 that opens and shuts can wear out by first through-hole and second through-hole, in order to open the chamber of weighing. How to stimulate door plant 142 that opens and shuts then the accessible and set up as follows, it is concrete, make door plant 142 that opens and shuts be equipped with drag hook 145, drag hook 145 includes connecting portion and hook portion, and hook portion sets up the one end at connecting portion, and the bottom surface of door plant 142 that opens and shuts is equipped with the draw-in groove, the interior bottom surface of second through-hole is equipped with the spout, and the hook portion of drag hook 145 extends to the below of door plant 142 that opens and shuts by the spout of second through-hole, and hook portion matches with the draw-in groove of door plant 142 bottom surface that opens and shuts, and the groove depth of spout is greater than the thickness of connecting portion, so that when weighing machine 14 weighs, drag hook 145 does not contact with door plant 142 that opens and shuts, in order to avoid the symmetry volume result to cause the influence, lies in the outside part of first casing 11 through pulling drag hook 145, makes door plant 142 slide in the spout of frame 141 to open the chamber of weighing.

Referring to fig. 2, the frame 141 is further provided with at least one supporting rod 144, and both ends of the at least one supporting rod 144 are fixedly connected with the frame 141 to support the frame 141, so as to increase the strength of the frame 141. On this basis, in order to avoid remaining more material on the bracing piece 144, the top of bracing piece 144 is equipped with the inclined plane, and the extension face and the door plant of inclined plane are crossing to avoid the material to stop. More specifically, the bracing piece 144 sets up in frame 141 middle part, the bracing piece 144 includes the backup pad of two relative settings, the top fixed connection of two backup pads, so that the cross-section of bracing piece 144 is the toper, this moment, the bottom broad of bracing piece 144, refer to FIG. 2 from this, the interval is provided with a plurality of relief holes 143 on the door plant 142 that opens and shuts in the embodiment of this application, the width of relief hole 143 slightly is less than the width of bracing piece 144 bottom, when weighing mechanism 14 weighs, relief hole 143 is located bracing piece 144 below, when the chamber of weighing is opened to needs, pulling drag hook 145 makes relief hole 143 keep away from bracing piece 144 can, can reduce the interval that needs pulling drag hook 145 by a wide margin, promote row material efficiency. The frame 141 further includes a support block 146 for supporting the opening and closing door plate 142, whereby the weight sensor may be disposed on the support block 146.

Referring to fig. 1, the weighing device comprises a second scale 2, the second scale 2 is arranged above the first scale 1, the screened metalized pellets enter the second scale 2 from a feed port of the second scale 2, a discharge port of the second scale 2 enters a feed port of the first scale 1, and finally the metalized pellets are discharged from a discharge port of the first scale 1.

Referring to fig. 1, second scale 2 includes a second housing 21 and a rotating shaft 22, where second housing 21 is cylindrical, second housing 21 may be directly erected above first housing 11, an axis of second housing 21 is horizontal, a top portion of an outer annular wall of second housing 21 is provided with a feeding hole, a bottom portion of the outer annular wall of second housing 21 is provided with a discharging hole, rotating shaft 22 may be rotatably disposed in second housing 21, and an axis of rotating shaft 22 and an axis of second housing 21 are disposed on the same straight line. In order to enable the rotating shaft 22 to drive the fan blades 23 to rotate, each storage space has a time which is not communicated with the feeding hole of the second casing 21 and the discharging hole of the second casing 21, so as to ensure the accuracy of measurement, and an included angle between adjacent fan blades 23 is not greater than an included angle between the feeding hole and the discharging hole of the second casing 21, therefore, in this embodiment, the rotating shaft 22 is provided with at least three fan blades 23 at intervals along the circumferential direction of the rotating shaft 22, the inner cavity of the second casing 21 is divided into at least three storage spaces by the at least three fan blades 23 and the rotating shaft 22, and each fan blade 23 is provided with a weight sensor. The fan blades 23 rotate along with the rotating shaft 22, the materials continuously enter a storage space from the feeding hole of the second shell 21, until the storage space is communicated with the feed port and the discharge port of the second housing 21, and when the rotation shaft 22 continues to rotate, the storage space is communicated with the discharge hole of the second shell 21, at the moment, the materials in the storage space are discharged under the action of gravity, the weight sensor of one of the fan blades 23 connected to the storage space continuously records the weight data, and the value before the weight data is reduced is taken as the basic weight value, and through the prior experiment, after obtaining a basic weight value of the material in a storage space, weighing a real measured value of the material discharged from the storage space by using a conventional weighing device, the ratio a of the true measured value to the basis weight value can be obtained, whereby, during the measurement in the subsequent production line, the actual weight value weighed by the second scale 2 is equal to the product of the basic weight value and the ratio a. Specifically, in this embodiment, the rotating shaft 22 is provided with three blades 23 at intervals along the circumferential direction thereof, and an included angle between adjacent blades 23 is 120 °.

The rotary shaft 22 may be directly driven by a motor, and thus, the rotary shaft 22 may be rotated in the forward and reverse directions. Considering the possibility of abrasion of the fan blade 23 caused by collision of falling materials on the fan blade 23, the rotating shaft 22 rotates clockwise and counterclockwise to adjust the surface of the fan blade 23 contacting the materials, so that an operator can select whether to start rotating the rotating shaft 22 in the opposite direction according to the abrasion condition of the surface of the fan blade 23, thereby prolonging the service life of the fan blade 23. Correspondingly, referring to fig. 1, two discharge ports are disposed on the second housing 21, and the two discharge ports are adjacent to each other, so that the materials can be discharged from the storage space when rotating clockwise or counterclockwise. It is understood that the two outlets may be connected, or as shown in fig. 1, may be disposed at the lower portion of the second casing 21 along the outer annular wall of the second casing 21, so as to avoid the outlets from being too large and weak to deform.

To accommodate the high temperature tempered ball discharged from the rotary hearth furnace, fan 23 is made of a heat resistant material, such as steel plate, and fan 23 may be an aluminum alloy plate if the weight of first scale 1 is to be reduced, or a stainless steel plate if the high temperature resistance is to be improved. Flabellum 23 not only can carry out preliminary weighing to the material, still can play the effect of buffering slowing down the kinetic energy when the material whereabouts, avoids the material to damage first weigher 1.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise" indicate orientations or positional relationships based on the orientation or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be considered as limiting the present application.

It should be noted that all the directional indications in the embodiments of the present application are only used to explain the relative position relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.

In this application, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In addition, descriptions in this application as to "first", "second", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, mechanism, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, mechanisms, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: numerous changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A rotary hearth furnace discharge weighing device is characterized in that the weighing device is arranged at a discharge port of a rotary hearth furnace and comprises a first scale, and the first scale comprises a first shell, a partition plate, a guide plate mechanism and a weighing mechanism; the top of the first shell is provided with a feeding hole, the bottom of the first shell is provided with a discharging hole, and the partition plate is vertically arranged in the first shell so as to divide the lower part of the inner cavity of the first shell into a first weighing cavity and a second weighing cavity;

the two guide plate mechanisms are oppositely arranged in the first shell, one guide plate mechanism is used for operably opening and closing the feeding end of the first weighing cavity, the other guide plate mechanism is used for operably opening and closing the feeding end of the second weighing cavity, and the two guide plate mechanisms are alternately opened and closed;

the two weighing mechanisms are arranged at the bottom in the first shell, and one weighing mechanism can operatively open and close the discharge end of the first weighing cavity; the other weighing mechanism can operatively open and close the discharge end of the second weighing cavity; and each weighing mechanism is provided with a weight sensor.

2. The rotary hearth furnace discharging and weighing device according to claim 1, wherein the guide plate mechanism comprises guide plates, one end of each of the two guide plates is hinged on two opposite side walls in the first shell, the other end of each of the two guide plates is operatively abutted against the top end of the partition plate, and the hinged position of the guide plate and the first shell is higher than the top end of the partition plate.

3. The rotary hearth furnace discharging and weighing device according to claim 2, wherein the guide plate mechanism further comprises a hydraulic cylinder, the hydraulic cylinder is arranged below the guide plate, a cylinder seat of the hydraulic cylinder is hinged on the side wall in the first shell, and the end part of a piston rod of the hydraulic cylinder is hinged on the bottom surface of the guide plate.

4. The rotary hearth furnace discharging and weighing device according to claim 1, wherein the weighing mechanism comprises a frame and a door plate, the frame is fixedly connected with both the inner wall of the first shell and one side wall of the partition plate, a discharging port is arranged in the middle of the frame, the door plate is arranged on the frame, and the door plate can be used for opening and closing the discharging port of the frame;

at least one weight sensor is disposed on the frame.

5. The rotary hearth furnace discharging and weighing device according to claim 4, wherein the frame is further provided with at least one support rod, and both ends of the at least one support rod are fixedly connected with the frame.

6. The rotary hearth furnace discharge weighing apparatus according to claim 5, wherein the top of the support bar is provided with a slope.

7. The rotary hearth furnace discharging and weighing device according to claim 6, wherein the support bar comprises two support plates which are oppositely arranged, and the top ends of the two support plates are fixedly connected.

8. The rotary hearth furnace discharging and weighing device according to claim 4, wherein four weight sensors are arranged on the weighing mechanism, and the four weight sensors are arranged on the frame at intervals.

9. The rotary hearth furnace discharging and weighing device according to claim 1, further comprising a second scale, wherein the second scale comprises a second shell and a rotating shaft, the second shell is cylindrical, the axis of the second shell is horizontal, a feeding hole is formed in the top of the outer annular wall of the second shell, a discharging hole is formed in the bottom of the outer annular wall of the second shell, and the discharging hole of the second shell is communicated with the feeding hole of the first shell;

the rotating shaft can be arranged in the second shell in a rotating mode around a shaft, the axis of the rotating shaft and the axis of the second shell are arranged on the same straight line, the rotating shaft is provided with at least three fan blades at intervals along the circumferential direction of the rotating shaft, each fan blade is provided with a weight sensor, the at least three fan blades and the rotating shaft divide an inner cavity of the second shell into at least three storage spaces, and each storage space is not communicated with a discharge hole of the second shell when being weighed.

10. The rotary hearth furnace discharge weighing apparatus according to claim 9, wherein said fan blades are made of a heat resistant material.

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