CN210400588U - Powder micro-weighing device - Google Patents
Powder micro-weighing device Download PDFInfo
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- CN210400588U CN210400588U CN201920802376.2U CN201920802376U CN210400588U CN 210400588 U CN210400588 U CN 210400588U CN 201920802376 U CN201920802376 U CN 201920802376U CN 210400588 U CN210400588 U CN 210400588U
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Abstract
The utility model discloses a powder micro-weighing device relates to sample weighing equipment technical field, and the main objective makes the easy operation that samples such as coal were weighed, uses manpower sparingly, improves work efficiency, and avoids the production error to improve analysis result's accuracy. The utility model discloses a main technical scheme does: the weighing device comprises a moving mechanism, a driving mechanism, a discharging mechanism, a weighing mechanism and a controller; the driving mechanism is arranged on the moving mechanism and is used for moving under the driving of the moving mechanism, so that the driving mechanism is connected with the blanking mechanism; the blanking mechanism is used for discharging powder in the sample bottle into the crucible under the driving of the driving mechanism; the weighing mechanism is used for weighing the weight of the powder in the crucible; the controller is respectively electrically connected with the moving mechanism, the driving mechanism, the blanking mechanism and the weighing mechanism and is used for controlling the moving mechanism, the driving mechanism, the blanking mechanism and the weighing mechanism to respectively perform corresponding actions and recording the weighing result of the weighing mechanism. The utility model discloses mainly used takes a sample and weighs to coal etc..
Description
Technical Field
The utility model relates to a sample weighing-appliance technical field particularly, relates to a powder micro-weighing device.
Background
Currently, coal settlement methods in industries related to coal, such as power plants, coal manufacturing plants or steel plants, generally settle accounts according to the weight of coal after moisture removal, so that the moisture content of batch coal becomes an important factor influencing the price of coal, and therefore, before settling accounts for coal, the moisture content of coal is generally required to be checked.
In the prior art, the moisture content of coal is usually checked by a drying method, which includes sampling and weighing the coal. At present, laboratory personnel to the sample of coal with weigh and need prepare sampling tool, sample container, weighing-appliance usually and weigh according to the artifical sample of chemical examination project regulation, simultaneously, need the manual work to make the sample record, the operation is complicated, extravagant manpower, efficiency is lower, and produces the error easily, influences the accuracy of analysis result.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the utility model provides a powder micro-weighing device, the main objective makes the easy operation that samples such as coal were weighed, uses manpower sparingly, improves work efficiency, and avoids producing the error to improve the accuracy of analysis result.
In order to achieve the above object, the utility model mainly provides the following technical scheme:
the embodiment of the utility model provides a powder micro-weighing device, which comprises a moving mechanism, a driving mechanism, a blanking mechanism, a weighing mechanism and a controller;
the driving mechanism is arranged on the moving mechanism and is used for moving under the driving of the moving mechanism, so that the driving mechanism is connected with the blanking mechanism;
the blanking mechanism is used for discharging powder in the sample bottle into the crucible under the driving of the driving mechanism;
the weighing mechanism is used for weighing the weight of the powder in the crucible;
the controller is respectively electrically connected with the moving mechanism, the driving mechanism, the blanking mechanism and the weighing mechanism, and is used for controlling the moving mechanism, the driving mechanism, the blanking mechanism and the weighing mechanism to respectively perform corresponding actions and recording the weighing result of the weighing mechanism.
Further, the drive mechanism includes:
the fixed seat is arranged on the moving mechanism;
the driving motor is arranged on the fixed seat;
one end of the driving shaft is connected with the output end of the driving motor, and the other end of the driving shaft penetrates through the fixed seat and is used for being connected with the blanking mechanism;
the lifting part is arranged on the fixed seat, is connected with the driving shaft and is used for driving the driving shaft to move up and down along with the rotation of the driving shaft so as to drive the blanking mechanism to discharge powder in the sample bottle to the crucible.
Further, the elevating portion includes:
the lifting sleeve is arranged on the fixed seat and sleeved outside the driving shaft, at least two convex edges which are oppositely arranged and sequentially ascend along an arc line are arranged on the end surface of the lifting sleeve, and opposite planes are arranged between the two convex edges;
the pin shaft is connected with the driving shaft in a cross mode and is connected with the output end of the driving motor through a first elastic piece, and two ends of the pin shaft are respectively abutted against the two planes;
when the driving shaft rotates, the pin shaft can ascend along the convex edge along with the rotation of the driving shaft so as to drive the driving shaft to ascend until the pin shaft rotates to the edge of the convex edge and is accelerated to descend to the plane under the action of the elastic force of the first elastic piece, so that the blanking mechanism is driven to discharge powder in the sample bottle to the crucible.
Further, the unloading mechanism includes:
the storage bin comprises a blanking channel and a storage channel which are communicated with each other, wherein the inlet of the blanking channel is communicated with a bottle cap which is used for connecting the sample bottle, and the sample bottle sends powder to the storage channel through the blanking channel;
unloading portion, unloading portion set up in the storage passageway, the one end of unloading portion is passed through the entry of storage passageway with actuating mechanism connects, and the other end can stretch out the export of storage passageway, unloading portion is used for under actuating mechanism's the drive, arrange the powder in the storage passageway extremely in the crucible.
Further, the blanking portion includes:
the connecting piece is used for being connected with the driving mechanism through the inlet of the material storage channel;
the unloading axle, the one end of unloading axle with the connecting piece is connected, and other end opening and protractile the export of storage passageway, the inside of unloading axle is provided with the unloading chamber rather than other end opening intercommunication, just the epaxial feed inlet that is provided with unloading chamber intercommunication of unloading.
Further, the blanking shaft is a first shaft body;
the feeding holes are arranged on the periphery of the first shaft body at intervals and are communicated with the blanking cavity;
the inner wall of the feed inlet is gradually expanded from inside to outside.
Further, the blanking shaft is a second shaft body;
the feeding holes are arranged on the periphery of the second shaft body at intervals and are communicated with the blanking cavity;
the central lines of the feed inlets are sequentially and obliquely arranged along the rotating direction of the second shaft body.
Further, the other end of the driving shaft is connected with a first friction plate;
the connecting piece comprises a second friction plate, and a second elastic piece is arranged between the second friction plate and the inner wall of the material storage channel;
the surface of the first friction plate is used for keeping friction connection with the surface of the second friction plate through the second elastic piece.
Further, the powder micro-weighing apparatus further comprises:
the mounting frame is arranged on the moving mechanism and is provided with an accommodating space matched with the outline shape of the storage bin;
the storage bin is used for being accommodated in the accommodating space.
Further, the powder micro-weighing apparatus further comprises:
a sensor electrically connected to the controller;
x, Y a mobile unit, the X, Y mobile unit being electrically connected with the controller;
the moving mechanism is arranged on the X, Y moving unit.
Borrow by above-mentioned technical scheme, the utility model discloses following beneficial effect has at least:
the embodiment of the utility model provides a powder micro-weighing device, through setting up moving mechanism, actuating mechanism, unloading mechanism, weighing mechanism and controller, and moving mechanism can drive actuating mechanism and remove, so that actuating mechanism is connected with unloading mechanism, make unloading mechanism can be under actuating mechanism's drive, arrange the powder in the sample bottle to the crucible in, and weighing mechanism can weigh the powder weight in the crucible, the controller can control above-mentioned each mechanism and carry out corresponding action, and can take notes weighing mechanism's weighing result. Compared with the prior art, the embodiment of the utility model provides a powder micro-weighing device has realized the automatic weighing and the automatic recording work of coal wind powder sample, and easy operation uses manpower sparingly, has improved work efficiency, and has avoided the production error, has improved the accuracy of analysis result. Moreover, because the whole sampling and weighing process is not manually and directly contacted with the coal, the coal sampling device can be matched with other automatic equipment to use to achieve the aim of unattended coal sample testing, and the accuracy of an analysis result is further ensured.
Drawings
Fig. 1 is a schematic structural view of a powder micro-weighing apparatus provided in an embodiment of the present invention at a first viewing angle;
fig. 2 is a schematic structural view of a powder micro-weighing apparatus provided in an embodiment of the present invention at a second viewing angle;
FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2;
FIG. 4 is a schematic structural view of the lifting sleeve of FIG. 2;
fig. 5 is a schematic structural view of a powder micro-weighing apparatus provided in an embodiment of the present invention at a third viewing angle;
FIG. 6 is an enlarged view of the structure at B in FIG. 5;
FIG. 7 is a schematic structural diagram of the first shaft in FIG. 5;
FIG. 8 is a schematic structural view of the second shaft of FIG. 5;
fig. 9 is a schematic cross-sectional structure of fig. 8.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the drawings in the preferred embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the invention. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In the description of the present embodiment, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore, should not be construed as limiting the scope of the present embodiment.
As shown in fig. 1, an embodiment of the present invention provides a powder micro-weighing device, which includes a moving mechanism 1, a driving mechanism 2, a discharging mechanism 3, a weighing mechanism 4 and a controller; the driving mechanism 2 can be arranged on the moving mechanism 1 and is used for moving under the driving of the moving mechanism 1, so that the driving mechanism 2 is connected with the blanking mechanism 3; the blanking mechanism 3 is used for discharging powder in the sample bottle into the crucible under the driving of the driving mechanism 2; the weighing mechanism 4 is used for weighing the weight of the powder in the crucible; the controller is respectively electrically connected with the moving mechanism 1, the driving mechanism 2, the blanking mechanism 3 and the weighing mechanism 4 and is used for controlling the moving mechanism, the driving mechanism, the blanking mechanism and the weighing mechanism to respectively perform corresponding actions and recording the weighing result of the weighing mechanism 4. In this case, reference numeral "10" denotes a sample bottle, and reference numeral "20" denotes a crucible.
In the powder micro-weighing device, the moving mechanism 1 can be a screw mechanism driven by a motor electrically connected with the controller, and the driving mechanism 2 can be arranged on a slide block of the screw mechanism, so that the motor drives the screw mechanism to work under the control action of the controller, and the slide block drives the driving mechanism 2 to move up and down. And unloading mechanism 3 can set up in the below of actuating mechanism 2, weighing mechanism 4 can set up in the below of unloading mechanism 3 and can be electronic balance, the experimental bottle can be installed on unloading mechanism 3, when the slider of moving mechanism 1 drives actuating mechanism 2 and descends and is connected with unloading mechanism 3, unloading mechanism 3 can arrange the powder sample in the sample bottle to the crucible on weighing mechanism 4 under actuating mechanism 2's drive, make weighing mechanism 4 weigh the sample in the crucible, and will weigh the result and send the controller to, until the result of weighing reaches the setting value.
The embodiment of the utility model provides a powder micro-weighing device, through setting up moving mechanism, actuating mechanism, unloading mechanism, weighing mechanism and controller, and moving mechanism can drive actuating mechanism and remove, so that actuating mechanism is connected with unloading mechanism, make unloading mechanism can be under actuating mechanism's drive, arrange the powder in the sample bottle to the crucible in, and weighing mechanism can weigh the powder weight in the crucible, the controller can control above-mentioned each mechanism and carry out corresponding action, and can take notes weighing mechanism's weighing result. Compared with the prior art, the embodiment of the utility model provides a powder micro-weighing device has realized the automatic weighing and the automatic recording work of coal wind powder sample, and easy operation uses manpower sparingly, has improved work efficiency, and has avoided the production error, has improved the accuracy of analysis result. Moreover, because the whole sampling and weighing process is not manually and directly contacted with the coal, the coal sampling device can be matched with other automatic equipment to use to achieve the aim of unattended coal sample testing, and the accuracy of an analysis result is further ensured.
The driving mechanism 2 may have various structural forms, as long as the discharging mechanism 3 can be driven to discharge the sample in the sample bottle into the crucible on the weighing mechanism 4. In an alternative embodiment, referring to fig. 2 and 3 in combination with fig. 1, the driving mechanism 2 may include a fixed seat 21, and the fixed seat 21 is disposed on the moving mechanism 1; a driving motor 22, wherein the driving motor 22 can be arranged on the fixed seat 21; a driving shaft 23, one end of the driving shaft 23 can be connected with the output end of the driving motor 22, and the other end can pass through the fixed seat 21 for connecting with the blanking mechanism 3; the lifting part can be arranged on the fixed seat 21, is connected with the driving shaft 23, and is used for driving the driving shaft 23 to perform lifting motion along with the rotation of the driving shaft 23 so as to drive the blanking mechanism 3 to discharge the powder in the sample bottle to the crucible.
According to the above embodiment, the fixing seat 21 may be disposed on the slider of the moving mechanism 1, and the fixing seat 21 may be a closed box structure, and the driving shaft 23 and the lifting portion are wrapped inside the fixing seat to protect the fixing seat. And the driving motor 22 may be located outside the fixing base 21, and an output end of the driving motor 22 may be connected to one end of the driving shaft 23 through a coupling. The lifting part is connected with the driving shaft 23, and can drive the driving shaft 23 to perform lifting motion along with the rotation of the driving shaft 23 so as to drive the blanking mechanism 3 to discharge powder in the sample bottle into the crucible of the weighing mechanism 4, so that the structure is reasonable, and the use is reliable.
In an alternative embodiment, referring to fig. 2, 3 and 4, the aforementioned lifting part may include a lifting sleeve 24, the lifting sleeve 24 is disposed on the fixed seat 21 and is sleeved outside the driving shaft 23, at least two convex edges 241 which are oppositely arranged and sequentially rise along an arc line may be disposed on an end surface of the lifting sleeve 24, and an opposite plane 242 is disposed between the two convex edges 241; and a pin 25, wherein the pin 25 may be cross-connected to the driving shaft 23 and connected to the output end of the driving motor 22 through a first elastic member 26, and two ends of the pin 25 abut against the two planes 242, respectively. Wherein the first elastic member 26 may be a spring.
In the above embodiment, the first elastic member 26 may be disposed between the coupling and the pin shaft 25, and the pin shaft 25 and the driving shaft 23 are cross-connected, specifically, vertically connected, and two ends of the pin shaft 25 abut against the plane 242 between the two convex edges 241, respectively, so that when the driving motor 22 of the driving mechanism 2 is started, the driving shaft 23 may drive the pin shaft 25 to rotate, so that two ends of the pin shaft 25 move along the convex edges 241 to rise, and drive the driving shaft 23 to rise by overcoming the elastic force of the first elastic member 26 until the pin shaft 25 rotates to the edge of the convex edge 241 and is accelerated to fall to the plane 242 under the elastic force of the first elastic member 26, and during the rising and accelerated falling, the driving shaft 23 may apply an impact force to the blanking mechanism 3 through the lifting portion, so that the blanking mechanism 3 smoothly discharges the powder in the sample bottle to the crucible, the sampling and weighing of the sample powder are realized, the structure is simple, and the realization is reliable.
It should be noted that, in the above embodiment, only two opposite convex edges 241 are disposed on the end surface of the lifting sleeve 24 and sequentially rise along the arc line, and an opposite plane 242 is disposed between the two convex edges 241, so that each time the driving motor 22 of the driving mechanism 2 rotates for one circle, the driving shaft 23 can realize one blanking period through the lifting portion, that is, the driving shaft 23 drives the blanking mechanism 3 to rise and fall, so as to provide an impact force to the blanking mechanism 3 to smoothly discharge the sample powder. Certainly, the end face of the lifting sleeve 24 is provided with a plurality of pairs of convex edges 241 which are oppositely arranged and sequentially ascend along an arc line, and each pair of convex edges 241 is provided with a relative plane 242, so that every rotation of the driving motor 22 of the driving mechanism 2 can be realized, the driving shaft 23 can realize a plurality of blanking periods through the lifting part, namely, the driving shaft 23 drives the blanking mechanism 3 to ascend for a plurality of times and descend for a plurality of times, so that a plurality of impact forces are provided for the blanking mechanism 3 to remove sample powder for a plurality of times, the specific setting mode can be determined according to specific conditions, and the specific setting mode is not limited here.
The blanking mechanism 3 may have various structural forms, as long as the sample in the sample bottle can be discharged into the crucible on the weighing mechanism 4 under the driving of the driving mechanism 2. In an alternative embodiment, referring to fig. 5 and 6 in combination with fig. 1, the blanking mechanism 3 may include a storage bin 31, the storage bin 31 may include a blanking channel 311 and a storage channel 312 which are communicated with each other, wherein an inlet of the blanking channel 311 may be communicated with a bottle cover 3111, the bottle cover 3111 is used for connecting a sample bottle, so that the sample bottle sends powder to the storage channel 312 through the blanking channel 311; the unloading portion, this unloading portion can set up in storage passageway 312, and the entry that storage passageway 312 was passed through to the one end of this unloading portion is connected with actuating mechanism 2, and the other end can stretch out the export of storage passageway 312, unloading portion is used for discharging the powder in the storage passageway 312 to the crucible under actuating mechanism 2's drive.
In the above embodiment, referring to fig. 1, the storage bin 31 may be Y-shaped, and form the blanking channel 311 and the storage channel 312 which are communicated with each other, and before sampling and weighing, the sample bottle may be inserted upside down on the bottle cap 3111 of the blanking channel 311, so that the powder in the sample bottle enters the storage channel 312 through the bottle cap 3111 and the blanking channel 311, and the powder in the storage channel 312 is discharged into the crucible on the weighing mechanism 4 for weighing by the blanking portion which is arranged in the storage channel 312 and connected with the driving mechanism 2. In addition, the outlet of the storage channel 312 may be disposed on a sealing plate 3121 sealed at the outlet end of the storage channel 312, and a sealing ring may be disposed between the outlet and the discharging shaft to seal the powder sample, and when the powder sample is not discharged, the outlet of the discharging shaft may be flush with the sealing plate 3121, and when the powder sample is discharged, the discharging shaft may be driven by the driving mechanism 2 to extend out of the outlet.
In an alternative embodiment, referring to fig. 5 and 6 in combination with fig. 1, the aforementioned blanking portion may include a connection for connecting with the drive mechanism 2 through the inlet of the magazine passage 312; one end of the blanking shaft 32 may be connected to the connecting member, the other end of the blanking shaft 32 may be open and may extend out of the outlet of the storage channel 312, a blanking cavity 322 communicated with the other end of the blanking shaft 32 is disposed inside the blanking shaft 32, and a feeding hole 321 communicated with the blanking cavity 322 may be disposed on the sidewall of the blanking shaft 32.
According to the above embodiment, since the blanking shaft 32 is disposed in the storage channel 312, the powder is filled around the blanking shaft 32, and the feed inlet 321 is disposed on the sidewall of the blanking shaft 32, when the blanking shaft 32 is driven by the driving mechanism 2 to rotate, the powder around the blanking shaft is received in the blanking cavity 322 through the feed inlet 321, and when the driving shaft 23 impacts the blanking mechanism 3 through the elevating portion, the blanking shaft 32 can perform downward acceleration movement until the pin 25 of the elevating portion rotates to the edge of the protruding edge 241 of the elevating sleeve 24 and accelerates to drop to the plane 242 under the elastic force of the first elastic member 26, the powder in the blanking cavity 322 of the blanking shaft 32 can be smoothly discharged into the crucible under the impact force, and at the same time, as the blanking shaft 32 rotates, the rest of the powder around the blanking shaft can be refilled around the blanking shaft under the stirring effect thereof, in preparation for the next blanking cycle.
In an alternative embodiment, referring to fig. 7 in combination with fig. 5, the blanking shaft 32 may be a first shaft body; one end of the first shaft body is used for being connected with the connecting piece, and the other end of the first shaft body is opened and can extend out of the outlet of the material storage channel 312; the discharging cavity 322 may be disposed inside the first shaft and communicated with the opening at the other end thereof; the number of the feed ports 321 is plural, and the plurality of feed ports 321 may be arranged at intervals on the periphery of the first shaft body and are all communicated with the feeding cavity 322; and the inner wall of the feed port 321 is gradually expanded from the inside to the outside. Specifically, each of the feed ports 321 may have a D-shape, the inner wall of which gradually expands outward, and when the first shaft rotates along with the driving mechanism 2, the powder around the first shaft in the storage passage 312 is taken into the discharge chamber 322 through the D-shaped feed port 321 and discharged from the other end thereof.
Here, since the viscosity of different powder samples is different from each other, the size of the D-shaped feed port 321 in the first shaft body can be designed according to the viscosity of the powder sample, and for example, when the powder sample is relatively viscous, the diameter of the feed port 321 can be increased.
In an alternative embodiment, referring to fig. 8 and 9 in combination with fig. 5, the feeding shaft 32 may also be a second shaft body; one end of the second shaft body is used for connecting with the connecting piece, and the other end of the second shaft body is opened and can extend out of the outlet of the material storage channel 312; the discharging cavity 322 can be disposed inside the second shaft body and is communicated with the other end opening thereof; the number of the feed ports 321 may be multiple, and the feed ports 321 may be arranged at intervals on the periphery of the second shaft body and all communicated with the feeding cavity 322; and the center lines of the plurality of feed ports 321 are sequentially arranged obliquely along the rotation direction of the second shaft body. Specifically, each of the feed ports 321 may be flat and arranged to extend outward from the center of the discharging chamber 322, and the center lines thereof may be sequentially arranged obliquely in the rotation direction of the second shaft body. Due to the structural design, the powder with high viscosity can smoothly enter the blanking cavity 322 through the obliquely arranged feed inlets 321 and is discharged under the action of centrifugal force, and the powder passing performance is good.
It should be noted here that the aforementioned discharging shaft 32 may be at least two shaft bodies, i.e. a first shaft body and a second shaft body, and in a specific use, an operator may select the corresponding shaft bodies to discharge materials according to a specific viscosity of the powder sample, for example, for a powder sample with a higher viscosity, a first shaft body with a feeding hole 321 with a different size may be selected, and for a powder sample with a higher viscosity, a second shaft body may be selected, so that the powder sample is smoothly discharged to the crucible through the discharging mechanism 3.
In order to facilitate that the rest of the powder around the discharging shaft 32 can be smoothly refilled around the discharging shaft after the end of one discharging cycle for the discharging operation of the next discharging cycle, in an alternative embodiment, a plurality of stirring blades may be disposed on the outer wall of the first shaft body or the second shaft body, so as to achieve the stirring and loosening of the powder by the rotation of the stirring blades along with the first shaft body or the second shaft body, so that the rest of the powder can be smoothly refilled around the discharging shaft 32 for the discharging operation of the next discharging cycle.
In order to facilitate the replacement of the blanking shaft 32 during the test, in an alternative embodiment, referring to fig. 5 and 6, the aforementioned connecting member may include a transfer shaft 33, one end of the transfer shaft 33 may be provided with an insertion hole with an internal thread, and an external thread adapted to the internal thread may be provided on an outer wall of one end of each of the first shaft body and the second shaft body, so that the first shaft body and the second shaft body may be connected to the transfer shaft 33, and therefore, the corresponding shaft body is selected for use according to the viscosity of the powder sample, which is convenient to use.
In an alternative embodiment, referring to fig. 5 and 6 in conjunction with fig. 1, a first friction plate 27 may be attached to the other end of the drive shaft 23 of the drive mechanism 2; and the connecting member may further include a second friction plate 34, and a second elastic member 35 is provided between the second friction plate 34 and the inner wall of the storing passage 312; the surface of the first friction plate 27 is adapted to be held in frictional engagement with the surface of the second friction plate 34 by the second elastic member 35. Wherein the second elastic member 35 may be a spring.
According to the above embodiment, the first friction plate 27 and the second friction plate 34 are arranged to enable the driving mechanism 2 and the blanking mechanism 3 to be in friction connection, namely, the surfaces of the first friction plate 27 and the second friction plate 34 are in friction connection, and torque is transmitted through the friction connection, so that the structure design is convenient for the separation of the blanking mechanism 3 and the driving mechanism 2, and the blanking shaft 32 and the sample bottles can be replaced.
Specifically, the first friction plate 27 may be a circular plate sleeved on the end of the driving shaft 23, the second friction plate 34 may be a circular plate connected with the transfer shaft 33 through a limiting shaft, and the second elastic member 35 may be sleeved outside the limiting shaft, and both ends thereof abut on the second friction plate 34 and the protruding edge 241 of the inner wall of the storing passage 312. Specifically, in the implementation, the moving mechanism 1 drives the driving mechanism 2 to descend, the first friction wheel contacts with the second friction wheel, until the second elastic member 35 is compressed to a preset value (1/2 of the effective stroke), and then the operation is stopped. And when actuating mechanism 2 drove 3 baiting of unloading mechanism, unloading axle 32 follows drive shaft 23 and rotates, first axis body or second axis body are through rotatory including its powder on every side in unloading chamber 322, actuating mechanism 2's lift portion drives drive shaft 23 upward movement, at this moment, second elastic component 35 resets and can keep the connection of first friction pulley and second friction pulley, until reaching the peak, drive shaft 23 and unloading axle 32 accelerated motion downwards under the elastic force effect of first elastic component 26, the impact force that produces makes the powder in the unloading chamber 322 of unloading axle 32 discharge.
It should be noted that the preset value mentioned above should ensure that the second elastic element 35 after being reset can still maintain the connection between the first friction plate 27 and the second friction plate 34 when the lifting portion of the driving mechanism 2 drives the driving shaft 23 to move upward, so that the driving mechanism 2 can provide the impact force for the blanking mechanism 3. Specifically, the preset value is related to the maximum height of the protruding edge 241 of the lifting sleeve 24, that is, the effective stroke of the second elastic element 35 should be equal to or greater than 2 times the maximum height of the protruding edge 241 of the lifting sleeve 24, so that when the pin 25 of the driving shaft 23 moves upward along the protruding edge 241 of the lifting sleeve 24 and reaches the highest point, the second elastic element 35 is reset to maintain the reliable connection between the first friction wheel and the second friction wheel.
In an alternative embodiment, referring to fig. 1 or fig. 2, the powder micro-weighing device may further include a mounting bracket 5, the mounting bracket 5 is disposed on the moving mechanism 1, and may be disposed at the bottom of the screw mechanism, the mounting bracket 5 has a receiving space adapted to the contour shape of the storage bin 31; the storage bin 31 is used for being accommodated in the accommodating space. Specifically, the accommodation space of this mounting bracket 5 can be profile shape and storage silo 31 looks adaptation and upper and lower open-ended hollow structure to the realization when testing, can be with storage silo 31 whole insert establish in the accommodation space, perhaps extract in the accommodation space, thereby realize unloading mechanism 3's installation or dismantlement, it is more convenient to use.
In an alternative embodiment, referring to fig. 1, 2 or 5, the powder micro-weighing device may further comprise a sensor electrically connected to the controller; x, Y moving unit 6, the X, Y moving unit 6 is electrically connected with the controller; the moving mechanism 1 is provided to the X, Y moving unit 6.
According to the embodiment, by arranging the sensor and the X, Y moving unit 6 and arranging the moving mechanism 1 on the X, Y moving unit 6, the position state of the crucible can be detected by the sensor (an infrared sensor, a camera or the like) when the crucible is placed on a balance tray, and the X, Y moving unit 6 drives the moving mechanism 1 to act so as to move the outlet of the blanking shaft 32 of the blanking mechanism 3 to be right above the opening of the crucible, so that the powder sample is discharged into the crucible; moreover, when the crucible is circular, the X, Y moving unit 6 can drive the moving mechanism 1 to move along the circular arc track during blanking, and when the crucible is irregular, the X, Y moving unit 6 can drive the moving mechanism 1 to move along the irregular track during blanking, so that the discharged powder can not be stacked in the crucible to be sharp, but a plane 242 is formed, and the test requirements are met. As shown in fig. 2 or 5, the X, Y moving unit 6 includes an X-direction moving part 61 and a Y-direction moving part 62, which are common technologies in the prior art and can be selected in the prior art when used, and therefore, the details are not described herein.
The specific working process of the powder micro-weighing device can be as follows: after the blanking mechanism 3 is fixed on the mounting frame 5, the powder (0.2mm) in the sample bottle can enter the storage channel 312 through the blanking channel 311, and the powder is filled around the blanking shaft 32. When the crucible is placed on the balance tray, the position state of the crucible is detected by the sensor, and the X, Y moving unit 6 drives the moving mechanism 1 to move, so that the outlet of the blanking shaft 32 of the blanking mechanism 3 is moved to be right above the opening of the crucible. The controller (control system) performs peeling operation, inputs the weight of the powder to be weighed, and selects the type of the crucible.
When the crucible is circular, the motor of the moving mechanism 1 is started and drives the driving mechanism 2 to descend, when the first friction plate 27 of the driving mechanism 2 contacts with the second friction plate 34 of the blanking mechanism 3, a corresponding sensor (an infrared sensor or a camera, etc.) arranged can be triggered to send a signal to the controller, so that the controller records the position state of the first friction plate 27 at the moment, the moving mechanism 1 continues to work until the second elastic piece 35 is compressed to 1/2 of the length thereof, at the moment, the outlet of the blanking shaft 32 is exposed out of the sealing plate 3121 of the storage bin 31, and the moving mechanism 1 stops working.
The driving motor 22 of the driving mechanism 2 is started and drives the driving shaft 23 to rotate, the second friction plate 34 and the blanking shaft 32 of the blanking mechanism 3 are driven by the first friction plate 27 to rotate, and the blanking shaft 32 receives the powder around the blanking shaft into the blanking cavity 322 through the feeding port 321 by rotation. At this time, the pin shaft 25 mounted on the driving shaft 23 on the driving mechanism 2 moves upward under the guiding action of the convex edge 241 of the lifting sleeve 24, the second elastic element 35 resets and maintains the connection between the first friction plate 27 and the second friction plate 34, after the pin shaft 25 reaches the highest point of the convex edge 241 of the lifting sleeve 24, under the elastic force of the first elastic element 26, the driving shaft 23 and the blanking shaft 32 do downward accelerated motion until the pin shaft 25 descends to the plane 242 of the lifting sleeve 24 to generate impact to discharge the powder in the blanking cavity 322 of the blanking shaft 32 into the crucible, and at the same time, the blanking shaft 32 continues to rotate and stir the rest of the powder in the storage channel 312 to be refilled around the blanking shaft 32, so that a blanking period is completed.
It should be noted here that, as described above, each time the driving motor 22 of the driving mechanism 2 rotates one circle, a plurality of blanking cycles can be realized through the change of the structure of the lifting sleeve 24, and each blanking cycle outputs a zero point and milligrams of powder sample, the weighing mechanism 4 records the weighing data in real time and feeds back the weighing data to the controller (control system), and the controller drives the rotation speed of the driving motor 22 of the driving mechanism 2 in a strip shape according to the weighing speed curve, that is, when the data fed back by the weighing mechanism 4 is about to approach the target data, the rotation speed of the driving motor 22 can be reduced, so that the powder is slowly discharged to the crucible through the blanking mechanism 3 until the fed back data reaches the target data, and finally reaches the set vertical state to be weighed, so as to improve the.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. A powder micro-weighing device is characterized by comprising a moving mechanism, a driving mechanism, a blanking mechanism, a weighing mechanism and a controller;
the driving mechanism is arranged on the moving mechanism and is used for moving under the driving of the moving mechanism, so that the driving mechanism is connected with the blanking mechanism;
the blanking mechanism is used for discharging powder in the sample bottle into the crucible under the driving of the driving mechanism;
the weighing mechanism is used for weighing the weight of the powder in the crucible;
the controller is respectively electrically connected with the moving mechanism, the driving mechanism, the blanking mechanism and the weighing mechanism, and is used for controlling the moving mechanism, the driving mechanism, the blanking mechanism and the weighing mechanism to respectively perform corresponding actions and recording the weighing result of the weighing mechanism.
2. The powder micro-weighing apparatus of claim 1, wherein the drive mechanism comprises:
the fixed seat is arranged on the moving mechanism;
the driving motor is arranged on the fixed seat;
one end of the driving shaft is connected with the output end of the driving motor, and the other end of the driving shaft penetrates through the fixed seat and is used for being connected with the blanking mechanism;
the lifting part is arranged on the fixed seat, is connected with the driving shaft and is used for driving the driving shaft to move up and down along with the rotation of the driving shaft so as to drive the blanking mechanism to discharge powder in the sample bottle to the crucible.
3. The powder micro-weighing apparatus of claim 2, wherein the lifting portion comprises:
the lifting sleeve is arranged on the fixed seat and sleeved outside the driving shaft, at least two convex edges which are oppositely arranged and sequentially ascend along an arc line are arranged on the end surface of the lifting sleeve, and opposite planes are arranged between the two convex edges;
the pin shaft is connected with the driving shaft in a cross mode and is connected with the output end of the driving motor through a first elastic piece, and two ends of the pin shaft are respectively abutted against the two planes;
when the driving shaft rotates, the pin shaft can ascend along the convex edge along with the rotation of the driving shaft so as to drive the driving shaft to ascend until the pin shaft rotates to the edge of the convex edge and is accelerated to descend to the plane under the action of the elastic force of the first elastic piece, so that the blanking mechanism is driven to discharge powder in the sample bottle to the crucible.
4. The powder micro-weighing apparatus of claim 2, wherein the blanking mechanism comprises:
the storage bin comprises a blanking channel and a storage channel which are communicated with each other, wherein the inlet of the blanking channel is communicated with a bottle cap which is used for connecting the sample bottle, and the sample bottle sends powder to the storage channel through the blanking channel;
unloading portion, unloading portion set up in the storage passageway, the one end of unloading portion is passed through the entry of storage passageway with actuating mechanism connects, and the other end can stretch out the export of storage passageway, unloading portion is used for under actuating mechanism's the drive, arrange the powder in the storage passageway extremely in the crucible.
5. The powder micro-weighing apparatus of claim 4, wherein the blanking portion comprises:
the connecting piece is used for being connected with the driving mechanism through the inlet of the material storage channel;
the unloading axle, the one end of unloading axle with the connecting piece is connected, and other end opening and protractile the export of storage passageway, the inside of unloading axle is provided with the unloading chamber rather than other end opening intercommunication, just the epaxial feed inlet that is provided with unloading chamber intercommunication of unloading.
6. The powder micro-weighing apparatus of claim 5,
the blanking shaft is a first shaft body;
the feeding holes are arranged on the periphery of the first shaft body at intervals and are communicated with the blanking cavity;
the inner wall of the feed inlet is gradually expanded from inside to outside.
7. The powder micro-weighing apparatus of claim 5,
the blanking shaft is a second shaft body;
the feeding holes are arranged on the periphery of the second shaft body at intervals and are communicated with the blanking cavity;
the central lines of the feed inlets are sequentially and obliquely arranged along the rotating direction of the second shaft body.
8. The powder micro-weighing apparatus of claim 5,
the other end of the driving shaft is connected with a first friction plate;
the connecting piece comprises a second friction plate, and a second elastic piece is arranged between the second friction plate and the inner wall of the material storage channel;
the surface of the first friction plate is used for keeping friction connection with the surface of the second friction plate through the second elastic piece.
9. The powder micro-weighing apparatus of claim 4, further comprising:
the mounting frame is arranged on the moving mechanism and is provided with an accommodating space matched with the outline shape of the storage bin;
the storage bin is used for being accommodated in the accommodating space.
10. The powder micro-weighing apparatus of claim 1, further comprising:
a sensor electrically connected to the controller;
x, Y a mobile unit, the X, Y mobile unit being electrically connected with the controller;
the moving mechanism is arranged on the X, Y moving unit.
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| CN201920802376.2U CN210400588U (en) | 2019-05-30 | 2019-05-30 | Powder micro-weighing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110260962A (en) * | 2019-05-30 | 2019-09-20 | 平顶山天安煤业股份有限公司 | Powder micro-weighing device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110260962A (en) * | 2019-05-30 | 2019-09-20 | 平顶山天安煤业股份有限公司 | Powder micro-weighing device |
| CN110260962B (en) * | 2019-05-30 | 2024-05-28 | 平顶山天安煤业股份有限公司 | Powder micro weighing device |
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