CN111854899A

CN111854899A - Rotor scale

Info

Publication number: CN111854899A
Application number: CN202010761876.3A
Authority: CN
Inventors: 杨德柱; 陈立新; 霍云海; 黄国磊; 吴吉胜; 禹建朋; 刘文飞
Original assignee: Henan Fengbo Automation Co ltd
Current assignee: Henan Fengbo Automation Co ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2020-10-30

Abstract

The invention relates to the technical field of metering and weighing equipment, in particular to a rotor scale. The rotor scale comprises a metering bin and a driving mechanism, wherein the metering bin comprises a metering bin cylinder, a metering bin upper plate and a metering bin lower plate, and a metering bin chamber is formed by enclosing the metering bin cylinder, the metering bin upper plate and the metering bin lower plate; the driving mechanism comprises a rotor and a driving shaft, the rotor comprises a rotor base body, a rotor outer ring and a plurality of rotor blades, the rotor base body is fixedly sleeved on the driving shaft, the rotor outer ring is coaxially arranged on the periphery of the rotor base body, and the plurality of rotor blades are connected between the rotor base body and the rotor outer ring in a surrounding mode at intervals; the distance between the rotor blades and the upper plate of the metering bin is 1/2-2/3 of the distance between the upper plate of the metering bin and the lower plate of the metering bin. The invention can effectively prevent the rotor from being clamped when the massive materials with larger volume fall into the cavity of the metering bin, and ensure the normal operation of the rotor scale, thereby well solving the metering problem of the massive materials.

Description

Rotor scale

Technical Field

The invention relates to the technical field of metering and weighing equipment, in particular to a rotor scale.

Background

At present, the dynamic bulk measurement of bulk materials is mostly carried out by adopting a rough type bulk measurement, and the bulk measurement of partial bulk materials of bulk materials is carried out by adopting a belt weigher. The problems of complicated measurement operation and low measurement precision exist when the extensive diffusion measurement is adopted. The existing belt weigher cannot measure high-temperature materials, and has the problems that a belt is easy to deviate, the weigher needs to be frequently calibrated, and the measuring precision is not high.

Rotor scale can carry out the measurement of high temperature material for belt weigher, and current rotor scale mainly used measures the powder, in order to guarantee that the powder can not the free flow in the internal portion of balance, needs divide into independent fan-shaped cavity through rotor blade with measuring the storehouse is inside, and consequently the clearance of rotor blade and the upper and lower face of measuring the storehouse is very little. However, such a structure cannot well measure blocky bulk materials, especially blocky bulk materials with large volumes, when one part of the blocky bulk materials with large volumes falls into the measuring bin and the other part of the blocky bulk materials is still above the inlet, the block materials can be clamped between the blades and the upper plate by the rotation of the rotor, so that the rotor cannot normally rotate, and further the rotor scale cannot normally operate. That is, the metering problem of cubic material can't be solved to current rotor scale.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art.

Therefore, the invention provides a rotor scale which can well solve the problem of metering of blocky materials.

The rotor scale comprises a metering bin and a driving mechanism, wherein the metering bin comprises a metering bin cylinder, an upper metering bin plate arranged at the upper end of the metering bin cylinder and a lower metering bin plate arranged at the lower end of the metering bin cylinder, and a metering bin chamber is formed by enclosing the metering bin cylinder, the upper metering bin plate and the lower metering bin plate; the driving mechanism comprises a rotor and a driving shaft which are arranged in the metering bin chamber, the rotor comprises a rotor base body, a rotor outer ring and a plurality of rotor blades, the rotor base body is fixedly sleeved on the driving shaft, the rotor outer ring is coaxially arranged on the periphery of the rotor base body, and the plurality of rotor blades are connected between the rotor base body and the rotor outer ring in a surrounding mode at intervals; the distance between the rotor blades and the metering bin upper plate is 1/2-2/3 of the distance between the metering bin upper plate and the metering bin lower plate.

According to one embodiment of the invention, the device further comprises two supporting mechanisms, wherein the two supporting mechanisms are symmetrically arranged on two opposite sides of the metering bin; and the bottom of the metering bin lower plate is provided with a metering bin bottom plate, and each supporting mechanism is supported and arranged at the bottom of the metering bin bottom plate respectively.

According to one embodiment of the invention, each supporting mechanism comprises a taper sleeve, a supporting tip, an upper adjusting plate, a lower adjusting plate and a bracket which are sequentially arranged from top to bottom, the upper end of the taper sleeve is fixedly connected with the bottom plate of the metering bin, the lower end of the taper sleeve is provided with a conical groove, the upper end of the supporting tip is provided with a conical protrusion, and the top point of the conical protrusion is in contact with the top of the inner side wall of the conical groove so as to form point contact between the conical protrusion and the conical groove; the lower end of the supporting center is fixedly connected with the upper adjusting plate, the upper adjusting plate is in contact connection with the lower adjusting plate, and the lower adjusting plate is fixedly connected with the upper end of the bracket; a line connecting the apexes of the two conical projections can pass perpendicularly through the axis of the drive shaft.

According to an embodiment of the invention, the device further comprises a hanging metering mechanism, wherein the hanging metering mechanism comprises a lifting lug, a transformation joint, a hanging screw rod, a weighing sensor and a support frame, the lifting lug is installed on the bottom plate of the metering bin, the lower end of the transformation joint is movably connected with the lifting lug, the upper end of the transformation joint is movably connected with the hanging joint, the hanging joint is in threaded connection with the lower end of the hanging screw rod, the upper end of the hanging screw rod is connected with the weighing sensor, and the top of the support frame is fixedly connected with the lower end face of the weighing sensor.

According to one embodiment of the invention, the lifting lug comprises a lifting lug mounting part, an intermediate connecting part and a hanging mounting part, wherein a first end of the intermediate connecting part is connected with the upper end of the lifting lug mounting part, a second end of the intermediate connecting part is connected with the hanging mounting part, the lifting lug mounting part is fixedly connected with the bottom plate of the metering bin, and the intermediate connecting part is arranged from the first end to the second end in an inclined and upward manner; the bottom of the hanging installation part is provided with an installation groove, a knife edge seat is fixedly connected in the installation groove, and the bottom surface of the knife edge seat is provided with a V-shaped through groove extending along the horizontal direction;

the transformation joint comprises a first connecting cross beam, a second connecting cross beam, a first connecting longitudinal beam and a second connecting longitudinal beam, the upper ends of the first connecting longitudinal beam and the second connecting longitudinal beam are correspondingly connected with the two ends of the first connecting cross beam respectively, and the lower ends of the first connecting longitudinal beam and the second connecting longitudinal beam are correspondingly connected with the two ends of the second connecting cross beam respectively; a knife edge is arranged at the upper end of the second connecting cross beam, a V-shaped cutting edge extending along the horizontal direction is arranged at the upper end of the knife edge, and the top of the V-shaped cutting edge is in contact with the top of the inner side wall of the V-shaped through groove, so that the V-shaped cutting edge is in line contact with the V-shaped through groove;

the hanging joint comprises a first connecting plate, a second connecting plate and a third connecting plate, wherein the first connecting plate is vertically arranged, the second connecting plate is vertically arranged, the third connecting plate is horizontally arranged, the first connecting plate and the second connecting plate are parallel to each other and are arranged at intervals, and the upper ends of the first connecting plate and the second connecting plate are connected with the third connecting plate; the first connecting beam is rotatably connected between the first connecting plate and the second connecting plate through a pin shaft, the pin shaft is arranged in a horizontally extending mode, and the extending direction of the pin shaft is perpendicular to the extending direction of the V-shaped cutting edge.

According to one embodiment of the invention, the device further comprises a mounting base, and the bracket and the supporting frame are mounted on the mounting base.

According to one embodiment of the invention, a feeding hole is arranged on the upper plate of the metering bin and is communicated with the chamber of the metering bin; the bottom of the metering bin bottom plate is provided with a discharge hole, and the discharge hole is communicated with the metering bin cavity; the axis of the feeding hole, the axis of the discharging hole and the axes of the two supporting apexes are all located on the same vertical plane.

According to one embodiment of the invention, a lower supporting seat is arranged at the bottom of the metering bin bottom plate, a lower bearing is installed on the lower supporting seat, and the lower end of the driving shaft sequentially penetrates through the metering bin lower plate and the metering bin bottom plate to be connected with the lower bearing;

an upper support seat is arranged on the upper plate of the metering bin, and an upper bearing is arranged on the upper support seat; the driving mechanism further comprises a driving motor, and the driving motor is arranged on the upper supporting seat; the upper end of the driving shaft sequentially penetrates through the upper plate of the metering bin and the upper bearing to be connected with a power output shaft of the driving motor.

According to an embodiment of the present invention, a rotation speed sensor is further mounted on the driving motor.

According to one embodiment of the invention, the bottom of each rotor blade is provided with a wear strip, and the wear strips are in sliding contact with the lower metering bin plate.

One or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

the rotor scale provided by the embodiment of the invention is characterized in that a rotor is arranged in a metering bin cavity, wherein the rotor comprises a rotor base body fixedly connected with a driving shaft, a rotor outer ring coaxially arranged at the periphery of the rotor base body and a plurality of rotor blades radially connected between the rotor base body and the rotor outer ring, and the distance between the rotor blades and an upper plate of the metering bin is 1/2-2/3 of the distance between an upper plate of the metering bin and a lower plate of the metering bin, so that the height of the rotor blades is obviously lower than that of the metering bin cavity, and a larger gap is formed between the rotor blades and the upper plate of the metering bin. When the great cubic material of volume gets into the measurement storehouse cavity, cubic material can fall into inside the measurement storehouse cavity completely for the drive shaft drives the rotor and rotates and when promoting cubic material and remove in the measurement storehouse cavity through the rotation of rotor, cubic material can not block between rotor blade and measurement storehouse upper plate. When one part of the massive materials with large volume falls into the metering bin cavity, the other part of the massive materials is clamped at the feed inlet of the metering bin cavity, and the gap between the rotor blade and the upper plate of the metering bin is larger, so that the massive materials cannot contact the rotor blade, and the rotor blade can drive other materials below the massive materials to move forwards, and then the massive materials can continuously fall down until the massive materials completely fall into the metering bin cavity, and the feeding action is completed. Therefore, the rotor scale provided by the embodiment of the invention can effectively prevent the rotor from being clamped when massive materials with larger volume fall into the cavity of the metering bin, and ensure the normal operation of the rotor scale, thereby well solving the metering problem of the massive materials.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 is a schematic structural diagram of a rotor scale according to an embodiment of the present invention;

FIG. 2 is a front view of a rotor scale according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of a dosing cartridge in an embodiment of the invention;

FIG. 4 is a schematic view of the structure of a rotor in the embodiment of the present invention;

FIG. 5 is a schematic structural view of a support mechanism in an embodiment of the present invention;

FIG. 6 is an isometric view of a suspended metering mechanism in an embodiment of the present invention;

FIG. 7 is a front view of a suspended metering mechanism in an embodiment of the present invention;

FIG. 8 is a left side view of a hanging metering mechanism in an embodiment of the present invention;

fig. 9 is an assembly view of the knife edge holder and knife edge in an embodiment of the invention.

Reference numerals:

1: a metering bin; 101: a metering bin cylinder; 102: a metering bin upper plate; 103: a metering bin lower plate; 104: a dosing bin chamber; 105: a feed inlet;

2: a drive mechanism; 21: a drive shaft; 22: a rotor; 23: a drive motor; 221: a rotor base; 222: a rotor outer ring; 223: a rotor blade; 2231: wear resistant strips;

3: a support mechanism; 301: a taper sleeve; 302: supporting the tip; 303: an upper adjusting plate; 304: a lower adjustment plate; 305: a support; 3011: a tapered recess; 3021: a conical projection;

4: a metering bin floor; 401: a discharge port;

5: a hanging metering mechanism; 50: a limit nut; 51: lifting lugs; 511: a lifting lug mounting part; 512: an intermediate connecting portion; 513: a hanging installation part; 514: mounting grooves; 52: a transformation section; 521: a first connecting beam; 522: a second connecting beam; 523: a first connecting stringer; 524: a second connecting longitudinal beam; 53: hanging a connector; 531: a first connecting plate; 532: a second connecting plate; 533: a third connecting plate; 54: hanging a screw rod; 55: a weighing sensor; 56: a support frame; 57: a tool holder; 571: a V-shaped through groove; 58: a knife edge; 581: a V-shaped cutting edge; 59: a pin shaft;

6: installing a base; 7: a lower support seat; 8: an upper support base; 9: a rotation speed sensor.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.

In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 an embodiment of the invention. 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, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

As shown in fig. 1 to 9, an embodiment of the present invention provides a rotor scale, which includes a metering bin 1 and a driving mechanism 2, wherein the metering bin 1 includes a metering bin cylinder 101, a metering bin upper plate 102, and a metering bin lower plate 103, the metering bin cylinder 101 is a cylindrical cylinder with two open ends, the metering bin upper plate 102 is installed at an upper opening of the metering bin cylinder 101, and the metering bin lower plate 103 is installed at a lower opening of the metering bin cylinder 101, so that a sealed metering bin chamber 104 is formed by enclosing the metering bin cylinder 101, the metering bin upper plate 102, and the metering bin lower plate 103.

The driving mechanism 2 comprises a driving shaft 21 and a rotor 22, wherein both ends of the driving shaft 21 penetrate through the upper metering bin plate 102 and the lower metering bin plate 103, and the driving shaft 21 is coaxially arranged with the metering bin cylinder 101. The rotor 22 is arranged inside the metering bin chamber 104, the rotor 22 includes a rotor base 221, a rotor outer ring 222 and a plurality of rotor blades 223, wherein the rotor base 221 is fixedly sleeved on the driving shaft 21, the rotor outer ring 222 is coaxially arranged on the periphery of the rotor base 221, the plurality of rotor blades 223 radially surround the rotor base 221 and the rotor outer ring 222 at intervals, one end of each rotor blade 223 is fixedly connected with the rotor base 221, and the other end of each rotor blade 223 is fixedly connected with the rotor outer ring 222. That is, when the driving shaft 21 rotates, the rotor base 221 is rotated, and the rotor blades 223 and the rotor outer ring 222 are rotated inside the metering chamber 104. When the material enters the space between the two rotor blades 223, the material is driven to move in the metering bin chamber 104 by the rotation of the rotor blades 223.

The distance between the rotor blade 223 and the metering bin upper plate 102 is set to be H1, the distance between the metering bin upper plate 102 and the metering bin lower plate 103 is set to be H2, and the ratio between H1 and H2 ranges from 1/2 to 2/3. That is, the height of the rotor blades 223 is significantly lower than the height of the metering chamber 104, thereby allowing for greater clearance between the rotor blades 223 and the metering chamber upper plate 102.

When the bulk material with a large volume enters the metering bin cavity 104, if the bulk material can completely fall into the metering bin cavity 104, the driving shaft 21 drives the rotor 22 to rotate, the bulk material can be pushed to move in the metering bin cavity 104 through the rotation of the rotor 22, and the bulk material cannot be clamped between the rotor blade 223 and the metering bin upper plate 102 at the moment. One part of the blocky materials with large volume falls into the metering bin cavity 104, and the other part of the blocky materials is clamped at the feed inlet of the metering bin cavity 104, because the gap between the rotor blade 223 and the metering bin upper plate 102 is large, the bottom of the blocky materials cannot contact the rotor blade 223, so that the rotor blade 223 can drive other materials below the blocky materials to continue to move, and the blocky materials can be contained in the metering bin cavity 104 until the space in the metering bin cavity 104, and then the blocky materials can completely fall into the metering bin cavity 104 to complete the feeding action.

Therefore, the rotor scale provided by the embodiment of the invention can effectively prevent the rotor 22 from being clamped when large-volume block materials fall into the metering bin chamber 104, so that the rotor scale can normally operate, and the metering problem of the block materials is well solved.

In some embodiments of the present invention, the rotor scale further comprises two supporting mechanisms 3, and the two supporting mechanisms 3 are symmetrically arranged on two opposite sides of the metering bin 1. That is, the two support mechanisms 3 are disposed axisymmetrically with respect to the drive shaft 21. The bottom of the metering bin lower plate 103 is provided with a metering bin bottom plate 4, the metering bin lower plate 103 and the metering bin bottom plate 4 are fixedly connected through a connecting piece, and the supporting mechanisms 3 are respectively supported and arranged at the bottom of the metering bin bottom plate 4. That is, the measuring chamber floor 4 as well as the measuring chamber 1 are supported by two support mechanisms 3.

Specifically, each support mechanism 3 includes a taper sleeve 301, a support tip 302, an upper adjustment plate 303, a lower adjustment plate 304, and a bracket 305, which are sequentially arranged from top to bottom. The upper end of the taper sleeve 301 is fixedly connected with the metering bin bottom plate 4, the lower end of the taper sleeve 301 is provided with a conical groove 3011, the upper end of the supporting tip 302 is provided with a conical protrusion 3021, the top of the conical protrusion 3021 is arranged in the conical groove 3011, and the vertex of the conical protrusion 3021 contacts with the top of the inner side wall of the conical groove 3011, so that point contact is formed between the conical protrusion 3021 and the conical groove 3011. That is, the contact positions of the tapered protrusion 3021 and the tapered recess 3011 are both spherical surfaces, thereby forming a point contact fit therebetween.

By providing two support mechanisms 3, the contact points between the two sets of support apexes 302 and the taper sleeve 301 can form a straight line, and the line between the apexes of the two conical protrusions 3021 can vertically pass through the axis of the drive shaft 21. Supporting the metering bin 1 through the structural form can enable the metering bin 1 to rotate only around a connecting line between the vertexes of the two conical bulges 3021, thereby well limiting other five degrees of freedom of the metering bin 1, enabling the metering bin 1 not to be supported through a bearing, not generating the friction force of the rotation of the bearing, avoiding the problem of concentricity when the two bearings are adopted for supporting and installing, and further improving the metering and weighing accuracy of the rotor scale.

The lower end of the supporting center 302 is fixedly connected with the upper adjusting plate 303, the upper adjusting plate 303 is in contact connection with the lower adjusting plate 304, and the lower adjusting plate 304 is fixedly connected with the upper end of the bracket 305. Because the upper adjusting plate 303 and the lower adjusting plate 304 are arranged in a contact manner, the position between the upper adjusting plate 303 and the lower adjusting plate 304 can be adjusted, so that the mounting position of the support center 302 can be adjusted, the point contact matching mounting between the conical protrusion 3021 and the conical groove 3011 is facilitated, and the positioning accuracy between the support center 302 and the taper sleeve 301 is reduced.

As shown in fig. 1, 2 and 6 to 9, in some embodiments of the present invention, the rotor scale further includes a hanging metering mechanism 5, the hanging metering mechanism 5 includes a lifting lug 51, a change joint 52, a hanging joint 53, a hanging screw 54, a weighing sensor 55 and a support frame 56, wherein the lifting lug 51 is installed on the metering bin bottom plate 4, the lower end of the change joint 52 is movably connected with the lifting lug 51, the upper end of the change joint 52 is movably connected with the hanging joint 53, the hanging joint 53 is in threaded connection with the lower end of the hanging screw 54, the upper end of the hanging screw 54 passes through the weighing sensor 55, the hanging screw 54 can move up and down relative to the weighing sensor 55, the upper end of the hanging screw 54 is connected with a limit nut 50, and the lower end surface of the limit nut 50 is in contact fit with the upper end surface of the. The top of the supporting frame 56 is fixedly connected with the lower end face of the weighing sensor 55. That is, the load cell 55 is supported and fixed by the support frame 56, and the weighing chamber 1 can apply an acting force to the load cell 55 sequentially through the lifting lug 51, the conversion joint 52, the hanging joint 53, the hanging screw rod 54 and the limit nut 50.

The hanging metering mechanism 5 is arranged on one side of the periphery of the metering bin 1, and a connecting line between the lifting lug 51 and the driving shaft 21 is perpendicular to a connecting line between the vertexes of the two conical bulges 3021. Therefore, when the material in the measuring bin 1 rotates to the position corresponding to the hanging measuring mechanism 5, the weight of the measuring bin 1 on one side of the hanging measuring mechanism 5 is increased, and then downward acting force is applied to the weighing sensor 55 through the lifting lug 51, the conversion joint 52, the hanging joint 53, the hanging screw rod 54 and the limiting nut 50, and the position of the weighing sensor 55 is kept unchanged under the supporting action of the supporting frame 56, so that the material can be measured and weighed through the weighing sensor 55.

Specifically, the lifting lug 51 includes a lifting lug mounting portion 511, an intermediate connecting portion 512, and a hanging mounting portion 513, wherein a first end of the intermediate connecting portion 512 is connected to an upper end of the lifting lug mounting portion 511, and a second end of the intermediate connecting portion 512 is connected to the hanging mounting portion 513. The lifting lug installation part 511 is fixedly connected with the metering bin bottom plate 4 through a connecting bolt, and the middle connection part 512 is arranged from the first end to the second end in an inclined and upward manner. The bottom of the hanging installation part 513 is provided with an installation groove 514, a knife edge seat 57 is fixedly connected in the installation groove 514, and the bottom surface of the knife edge seat 57 is provided with a V-shaped through groove 571 extending along the horizontal direction.

Specifically, the conversion link 52 includes a first connecting cross beam 521, a second connecting cross beam 522, a first connecting longitudinal beam 523, and a second connecting longitudinal beam 524, wherein upper ends of the first connecting longitudinal beam 523 and the second connecting longitudinal beam 524 are respectively connected to two ends of the first connecting cross beam 521, and lower ends of the first connecting longitudinal beam 523 and the second connecting longitudinal beam 524 are respectively connected to two ends of the second connecting cross beam 522, so that a rectangular frame structure is formed by the first connecting cross beam 521, the second connecting cross beam 522, the first connecting longitudinal beam 523, and the second connecting longitudinal beam 524. The knife edge 58 is installed at the upper end of the second connecting beam 522, the upper end of the knife edge 58 is provided with a V-shaped cutting edge 581 extending along the horizontal direction, and the top of the V-shaped cutting edge 581 is contacted with the top of the inner side wall of the V-shaped through groove 571, so that the V-shaped cutting edge 581 is in line contact with the V-shaped through groove 571. That is, the knife edge 58 can swing left and right in the V-shaped through groove 571 of the knife edge seat 57.

Specifically, the hanging joint 53 includes a first connecting plate 531 arranged vertically, a second connecting plate 532 arranged vertically, and a third connecting plate 533 arranged horizontally, the first connecting plate 531 and the second connecting plate 532 are arranged in parallel and at an interval, and the upper ends of the first connecting plate 531 and the second connecting plate 532 are connected to the third connecting plate 533, so that the first connecting plate 531, the third connecting plate 533, and the second connecting plate 532 are connected to form an inverted U-shaped structure. The first connecting beam 521 is disposed between the first connecting plate 531 and the second connecting plate 532, the first connecting beam 521 is rotatably connected between the first connecting plate 531 and the second connecting plate 532 through a pin 59, the pin 59 extends along the horizontal direction, and the extending direction of the pin 59 is perpendicular to the extending direction of the V-shaped cutting edge 581. That is, the conversion joint 52 can swing back and forth with respect to the hanger joint 53.

That is, the movable fit between the knife edge 58 and the knife edge seat 57 allows a certain degree of rotational freedom between the lifting lug 51 and the change joint 52, and the movable fit between the change joint 52 and the hanging joint 53 allows a certain degree of rotational freedom between the change joint 52 and the hanging joint 53. Therefore, when the lifting lug 51 vibrates front and back and left and right under the action of the measuring bin 1, the hanging screw rod 54 can still keep a vertical state due to the rotational freedom degree between the lifting lug 51 and the change joint 52 and the rotational freedom degree between the change joint 52 and the hanging joint 53, and the force in the inclined direction caused by the vibration is not transmitted to the weighing sensor 55 above, so that the measuring precision is further improved.

In the embodiment of the present invention, the upper plate 102 of the metering chamber is provided with a feed opening 105, and the feed opening 105 is communicated with the chamber 104 of the metering chamber. The bottom of the metering bin bottom plate 4 is provided with a discharge port 401, and the discharge port 401 is communicated with the metering bin chamber 104. That is, material can enter the dosing chamber 104 through the inlet port 105 and then exit the dosing chamber 104 through the outlet port 401.

Wherein the axis of the feed inlet 105, the axis of the discharge outlet 401 and the axes of the two support tips 302 all lie in the same vertical plane. Therefore, the impact force generated when the material enters the metering bin chamber 104 from the feeding hole 105 and the impact force generated when the material flows out of the metering bin chamber 104 through the discharging hole 401 do not influence the hanging metering mechanism 5.

When there is no material inside the silo chamber 104, the load cell 55 of the overhead metering mechanism 5 will display a value. When a material enters the metering bin chamber 104 from the feeding hole 105, and then the material is driven to reach the discharging hole 401 through the hanging metering mechanism 5 under the action of the rotor 22 to be discharged, the metering bin 1 is obviously weighted on one side of the hanging metering mechanism 5, and then acting force can be applied to the weighing sensor 55, and the weight increased by the weighing sensor 55 is the weight of the material. Since the rotation speed of the rotor 22 can be obtained, the time between the material inlet 105 and the material outlet 401 can also be obtained, so that the total weight of the material passing through the rotor scale in a certain period of time can be obtained by integrating the weight of the material passing through the time. Since the method for calculating the total weight of the material is the prior art, no further description is given here.

In some embodiments of the present invention, the rotor scale further comprises a mounting base 6, wherein the bracket 305 and the support bracket 56 are both mounted on the mounting base 6. That is, the measuring bin 1, the driving mechanism 2, the supporting mechanism 3 and the hanging measuring mechanism 5 are supported by the mounting base 6.

Specifically, the bottom of the metering bin bottom plate 4 is provided with a lower support seat 7, a lower bearing is installed on the lower support seat 7, and the lower end of the driving shaft 21 sequentially penetrates through the metering bin lower plate 103 and the metering bin bottom plate 4 and then is connected with the lower bearing. An upper supporting seat 8 is arranged on the upper plate 102 of the metering bin, an upper bearing is arranged on the upper supporting seat 8, and the upper end of the driving shaft 21 penetrates through the upper plate 102 of the metering bin and then is connected with the upper bearing. The supporting installation of the driving shaft 21 is realized by arranging the lower supporting seat 7 and the upper supporting seat 8.

The driving mechanism 2 further comprises a driving motor 23, the driving motor 23 is mounted on the upper supporting seat 8, and the upper end of the driving shaft 21 penetrates through the upper supporting seat 8 to be connected with a power output shaft of the driving motor 23. The drive shaft 21 can be driven to rotate by a drive motor 23 to power the rotation of the rotor 22.

A rotation speed sensor 9 is further mounted on the driving motor 23, and the rotation speed of the rotor 22 can be obtained through the rotation speed sensor 9.

Specifically, the bottom of each rotor blade 223 is provided with a wear strip 2231, and the wear strips 2231 are connected to the rotor blades 223 by bolts. The wear strips 2231 are in sliding contact with the metering chamber lower plate 103. The material inside the dosing chamber 104 can be moved during rotation of the rotor 22 by means of a sliding fit between the wear strips 2231 and the dosing chamber lower plate 103. After the rotor scale moves for a long time so that the wear strips 2231 are worn, the gap between the wear strips 2231 and the lower metering chamber plate 103 can be adjusted by adjusting the installation positions of the wear strips 2231 on the rotor blades 223.

In conclusion, the rotor scale provided by the embodiment of the invention has the advantages of simple structure, high reliability, high metering precision and high temperature resistance, is suitable for metering and weighing block materials, can effectively prevent the rotor from being clamped when the block materials with larger volume fall into the metering bin chamber, and ensures the normal operation of the rotor scale.

The above embodiments are merely illustrative of the present invention and are not to be construed as limiting the invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and the technical solution of the present invention is covered by the claims of the present invention.

Claims

1. A rotor scale, characterized in that: the metering bin comprises a metering bin cylinder, an upper metering bin plate arranged at the upper end of the metering bin cylinder and a lower metering bin plate arranged at the lower end of the metering bin cylinder, wherein a metering bin chamber is formed by enclosing the metering bin cylinder, the upper metering bin plate and the lower metering bin plate; the driving mechanism comprises a rotor and a driving shaft which are arranged in the metering bin chamber, the rotor comprises a rotor base body, a rotor outer ring and a plurality of rotor blades, the rotor base body is fixedly sleeved on the driving shaft, the rotor outer ring is coaxially arranged on the periphery of the rotor base body, and the plurality of rotor blades are connected between the rotor base body and the rotor outer ring in a surrounding mode at intervals; the distance between the rotor blades and the metering bin upper plate is 1/2-2/3 of the distance between the metering bin upper plate and the metering bin lower plate.

2. The rotor scale of claim 1, wherein: the two supporting mechanisms are symmetrically arranged on two opposite sides of the metering bin; and the bottom of the metering bin lower plate is provided with a metering bin bottom plate, and each supporting mechanism is supported and arranged at the bottom of the metering bin bottom plate respectively.

3. The rotor scale of claim 2, wherein: each supporting mechanism comprises a taper sleeve, a supporting tip, an upper adjusting plate, a lower adjusting plate and a support which are sequentially arranged from top to bottom, the upper end of the taper sleeve is fixedly connected with the bottom plate of the metering bin, the lower end of the taper sleeve is provided with a conical groove, the upper end of the supporting tip is provided with a conical bulge, and the top point of the conical bulge is in contact with the top of the inner side wall of the conical groove so as to form point contact between the conical bulge and the conical groove; the lower end of the supporting center is fixedly connected with the upper adjusting plate, the upper adjusting plate is in contact connection with the lower adjusting plate, and the lower adjusting plate is fixedly connected with the upper end of the bracket; a line connecting the apexes of the two conical projections can pass perpendicularly through the axis of the drive shaft.

4. The rotor scale of claim 3, wherein: the hanging metering mechanism comprises a lifting lug, a change joint, a hanging screw rod, a weighing sensor and a support frame, wherein the lifting lug is installed on the metering bin bottom plate, the lower end of the change joint is movably connected with the lifting lug, the upper end of the change joint is movably connected with the hanging joint, the hanging joint is in threaded connection with the lower end of the hanging screw rod, the upper end of the hanging screw rod is connected with the weighing sensor, and the top of the support frame is fixedly connected with the lower end face of the weighing sensor.

5. The rotor scale of claim 4, wherein: the lifting lug comprises a lifting lug installation part, an intermediate connection part and a hanging installation part, wherein the first end of the intermediate connection part is connected with the upper end of the lifting lug installation part, the second end of the intermediate connection part is connected with the hanging installation part, the lifting lug installation part is fixedly connected with the bottom plate of the metering bin, and the intermediate connection part is obliquely and upwards arranged from the first end to the second end; the bottom of the hanging installation part is provided with an installation groove, a knife edge seat is fixedly connected in the installation groove, and the bottom surface of the knife edge seat is provided with a V-shaped through groove extending along the horizontal direction;

6. The rotor scale of claim 4, wherein: the support frame is characterized by further comprising an installation base, and the support frame are installed on the installation base.

7. The rotor scale of claim 3, wherein: a feed inlet is formed in the upper plate of the metering bin and is communicated with the chamber of the metering bin; the bottom of the metering bin bottom plate is provided with a discharge hole, and the discharge hole is communicated with the metering bin cavity; the axis of the feeding hole, the axis of the discharging hole and the axes of the two supporting apexes are all located on the same vertical plane.

8. The rotor scale of claim 2, wherein: the bottom of the metering bin bottom plate is provided with a lower supporting seat, a lower bearing is installed on the lower supporting seat, and the lower end of the driving shaft sequentially penetrates through the metering bin lower plate and the metering bin bottom plate to be connected with the lower bearing;

9. The rotor scale of claim 8, wherein: and a rotating speed sensor is also arranged on the driving motor.

10. The rotor scale of any one of claims 1-9, wherein: and the bottom of each rotor blade is provided with a wear-resistant strip respectively, and the wear-resistant strips are in sliding contact with the lower plate of the metering bin.