CN111207984A - Quantitative division device and method - Google Patents
Quantitative division device and method Download PDFInfo
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- CN111207984A CN111207984A CN202010314561.4A CN202010314561A CN111207984A CN 111207984 A CN111207984 A CN 111207984A CN 202010314561 A CN202010314561 A CN 202010314561A CN 111207984 A CN111207984 A CN 111207984A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G13/00—Weighing apparatus with automatic feed or discharge for weighing-out batches of material
- G01G13/003—Details; specially adapted accessories
- G01G13/006—Container supply or discharge mechanism
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G13/00—Weighing apparatus with automatic feed or discharge for weighing-out batches of material
- G01G13/02—Means for automatically loading weigh pans or other receptacles, e.g. disposable containers, under control of the weighing mechanism
- G01G13/022—Material feeding devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G13/00—Weighing apparatus with automatic feed or discharge for weighing-out batches of material
- G01G13/24—Weighing mechanism control arrangements for automatic feed or discharge
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Abstract
The invention provides a quantitative division device and a method, which relate to the technical field of automatic processing in the analysis process of a solid sample, and the quantitative division device provided by the invention comprises a weighing mechanism, a source sample bearing component, a first rotating mechanism and a second rotating mechanism; the source sample bearing assembly is arranged on the first rotating mechanism, and the first rotating mechanism is used for driving the source sample bearing assembly to rotate; the second rotating mechanism is connected with the first rotating mechanism, the second rotating mechanism is used for driving the first rotating mechanism to rotate, the rotating axis of the second rotating mechanism is parallel to the horizontal plane, the weighing mechanism is located below the source sample bearing assembly, and the weighing mechanism is used for receiving a source sample dropped by the source sample bearing assembly. The quantitative division device provided by the invention has the advantages that the division process is stable, and an operator can control the working states of the first rotating mechanism and the second rotating mechanism according to actual needs, so that a sample with proper component and optimal division precision can be obtained.
Description
Technical Field
The invention relates to the technical field of automatic processing in a solid sample analysis process, in particular to a quantitative division device and a quantitative division method.
Background
In the metallurgical industry, in order to monitor the production process, it is necessary to analyze samples in the process. After a representative sample is extracted from the flow in the traditional analysis process, manual analysis is often performed, wherein the related sample division is performed through a quartering method, the workload is large, the efficiency is low, and human resources are wasted.
Secondly current rotatory splitter commodity flow is from its feed inlet entering cavity and discharge from arranging the material pipe in, is equipped with the cutterbar on the transportation track of arranging the material pipe export, arranges the material pipe and once through the cutterbar, intercepts a "sample" promptly, consequently every time sample quantity and division precision are certain, and the operating personnel can't adjust suitable division precision as required.
If the vibration splitter is adopted, certain requirements are required for the amount of the source sample in the source sample container, otherwise, excessive samples are easily split at one time in the vibration process, the samples are easily poured out of the sample receiving container, and the accurate control of the amount of the split samples cannot be realized.
Disclosure of Invention
The invention aims to provide a quantitative division device and a quantitative division method, wherein the division process is stable, and an operator can control the working states of a first rotating mechanism and a second rotating mechanism according to actual needs so as to obtain a sample with proper component and optimal division precision.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a quantitative division device, which comprises a weighing mechanism, a source sample bearing component, a first rotating mechanism and a second rotating mechanism, wherein the source sample bearing component is arranged on the weighing mechanism;
the source sample bearing assembly is arranged on the first rotating mechanism, and the first rotating mechanism is used for driving the source sample bearing assembly to rotate;
the second rotating mechanism is connected with the first rotating mechanism and used for driving the first rotating mechanism to rotate, and the rotating axis of the second rotating mechanism is parallel to the horizontal plane;
the weighing mechanism is located below the source sample bearing component and used for receiving a source sample dropped by the source sample bearing component.
Further, the source sample carrying assembly comprises a source sample container and a container pipe, the container pipe is mounted on the first rotating mechanism, the source sample container is detachably connected with the container pipe, and the source sample container is used for carrying a source sample.
Further, the first rotating mechanism comprises a first power source, a source sample container fixing seat and a support;
the container tube is arranged on the source sample container fixing seat;
the first power source is arranged on the support and connected with the source sample container fixing seat, and the first power source is used for driving the source sample container fixing seat to rotate relative to the support.
Further, the second rotating mechanism comprises a driving assembly, a rotating shaft and a rotating mechanism fixing seat;
the rotating shaft penetrates through the rotating mechanism fixing seat, and two ends of the rotating shaft are respectively connected with the driving assembly and the first rotating mechanism;
the driving assembly is installed on the rotating mechanism fixing seat and used for driving the rotating shaft to rotate relative to the rotating mechanism fixing seat.
Further, the drive assembly comprises a second power source and a power transmission structure which are both installed on the rotating mechanism fixing seat, the second power source and the rotating shaft are both connected with the power transmission structure, and the power transmission structure is used for transmitting the power of the second power source to the rotating shaft.
Furthermore, a guide shaft support and a rotating mechanism adapter are arranged between the rotating shaft and the first rotating mechanism, the guide shaft support is sleeved at the end of the rotating shaft, and two sides of the rotating mechanism adapter are respectively connected with the first rotating mechanism and the guide shaft support.
Furthermore, the quantitative division device further comprises a detection mechanism for detecting the rotation angle of the first rotation mechanism, and the detection mechanism is installed on the driving assembly and the rotation mechanism fixing seat.
Further, the weighing mechanism comprises a weigher, a weighing tray and a receiving container placed on the weighing tray, and the weighing tray is arranged on the weigher.
Furthermore, the quantitative division device further comprises a control system, the weighing device, the first rotating mechanism and the second rotating mechanism are all connected with the control system, the weighing device is used for sending weight information of an object above the weighing tray to the control system, and the control system is used for receiving the weight information and controlling the running states of the first rotating mechanism and the second rotating mechanism.
The invention also provides a quantitative division method, which adopts the quantitative division device of the scheme and comprises the following steps:
setting the sample weight m1 of the source to be divided, the second rotating mechanism driving the first rotating mechanism to rotate by the angle theta once, and waiting for time t;
placing a source sample within the source sample carrier assembly;
the weighing tray obtains the weight m2 of the receiving container and sends weight information to the control system, the control system controls the first rotating mechanism to drive the source sample bearing assembly to rotate, and simultaneously controls the second rotating mechanism to drive the first rotating mechanism to rotate by an angle theta;
in a set time t range, the weight information sent by the weighing device to the control system is not changed, and the control system continues to control the second rotating mechanism to drive the first rotating mechanism to rotate by an angle theta, so that circulation is performed until the weight information sent by the weighing device to the control system is changed;
within a set time t range, the value of the weight information acquired by the weighing device is gradually increased to m1+ m2, and a control system controls the first rotating mechanism to stop operating and controls the second rotating mechanism to drive the first rotating mechanism to return to an initial position;
or within a set time t range, the weight information value sent by the weighing device to the control system stays at a position smaller than m1+ m2, the control system continues to control the second rotating mechanism to drive the first rotating mechanism to continue rotating by an angle theta, and the process is circulated until the weight information value obtained by the weighing device is m1+ m2, the control system controls the first rotating mechanism to stop acting, and controls the second rotating mechanism to drive the first rotating mechanism to return to the initial position.
The quantitative division device and the method provided by the invention can produce the following beneficial effects:
when the quantitative division device is used, a source sample is placed in a source sample bearing assembly, the first rotating mechanism drives the source sample bearing assembly to rotate, meanwhile, the second rotating mechanism drives the first rotating mechanism to rotate, the rotating axis is parallel to the horizontal plane, the source sample in the source sample bearing assembly can gradually fall to a weighing mechanism below, after the source sample on the weighing mechanism reaches a preset weight, the first rotating mechanism stops acting, and the second rotating mechanism drives the first rotating mechanism to rotate to an initial state.
Compared with the traditional vibration division device, the quantitative division device provided by the first aspect of the invention has the advantages that the phenomenon that multi-source samples are divided at one time does not exist, the source samples can be prevented from being toppled outside the receiving container due to vibration, and compared with the traditional rotary division device, an operator can control the working states of the first rotating mechanism and the second rotating mechanism according to actual needs, so that samples with proper components and optimal division precision can be obtained.
According to the quantitative division method provided by the second aspect of the invention, the division process is completely automatically controlled by the control system, the closed-loop control of division is realized through the weighing mechanism, the manpower requirement in the source sample processing process is reduced, and an operator can select proper m1, theta and t according to the actual requirement, so that samples with proper components can be obtained, and the optimal division precision and efficiency can be achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a front view of a quantitative reduction device in an initial state according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a left side view of the quantitative reduction device in an initial state according to an embodiment of the present invention;
FIG. 4 is a front view of the quantitative reduction device in a sample loading state according to an embodiment of the present invention;
fig. 5 is a left side view of the quantitative reduction device in a sample loading state according to the embodiment of the present invention.
Icon: 1-a weighing mechanism; 11-a weigher; 12-a weighing tray; 13-a receiving container; 14-a heat insulation plate; 2-a source sample support assembly; 21-a source sample container; 22-a containment tube; 3-a first rotating mechanism; 31-a first power source; 32-source sample container holder; 33-a support; 4-a second rotating mechanism; 41-a drive assembly; 411-a second power source; 412-a power transmission structure; 42-a rotating shaft; 43-rotating mechanism fixing base; 431-seat body; 432-a pedestal bearing; 433-a bearing; 434-bearing retainer ring; 5-a guide shaft support; 6-rotating the mechanism adaptor; 7-a detection mechanism; 71-a photoelectric switch; 72-photoelectric switch block sheet; 73-photoelectric on-off optical adapter plate.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. 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 invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting 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 present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
The embodiment of the first aspect of the present invention provides a quantitative division device, as shown in fig. 1 to 5, comprising a weighing mechanism 1, a source sample carrying assembly 2, a first rotating mechanism 3 and a second rotating mechanism 4; the source sample bearing component 2 is arranged on a first rotating mechanism 3, and the first rotating mechanism 3 is used for driving the source sample bearing component 2 to rotate; the second rotating mechanism 4 is connected with the first rotating mechanism 3, and the second rotating mechanism 4 is used for driving the first rotating mechanism 3 to rotate, so that the source sample in the source sample bearing component 2 falls to the weighing mechanism 1.
The quantitative division device provided by the first aspect of the invention has a simple structure and a stable division process, and an operator can control the working states of the first rotating mechanism 3 and the second rotating mechanism 4 according to actual needs, so that a sample with proper component and optimal division precision can be obtained.
The second rotating mechanism 4 can drive the first rotating mechanism 3 to rotate in place once, and can also drive the first rotating mechanism 3 to rotate in place intermittently.
In at least one embodiment, the second rotating mechanism 4 drives the first rotating mechanism 3 to intermittently rotate to a position, and the specific working process is as follows:
the second rotating mechanism 4 drives the first rotating mechanism 3 to rotate by an angle theta, if the reading of the weighing mechanism 1 is not changed, the second rotating mechanism 4 continues to drive the first rotating mechanism 3 to rotate by the angle theta, the operation is repeated until the reading of the weighing mechanism 1 is changed, and after the reading is changed, if the source sample does not reach the preset weight all the time at the time t, the second rotating mechanism 4 continues to drive the first rotating mechanism 3 to rotate by the angle theta, the operation is repeated until the reading of the weighing mechanism 1 displays that the source sample reaches the preset weight.
The second rotating mechanism 4 drives the first rotating mechanism 3 to intermittently rotate in place, so that the source samples in the source sample bearing component 2 can be prevented from suddenly dropping to the weighing mechanism 1 in a large amount, the reading of the weighing mechanism 1 is gradually increased, and the controllability is stronger.
Specifically, as shown in fig. 2, the source sample carrier assembly 2 includes a source sample container 21 and a receptacle pipe 22, the receptacle pipe 22 is mounted on the first rotating mechanism 3, the source sample container 21 is detachably connected to the receptacle pipe 22, and the source sample container 21 is used for carrying a source sample.
In the traditional splitter, a source sample directly contacts with the splitter, cross contamination is easy to generate, and particularly, the splitting of the source sample with large content difference is greatly influenced, so that the analysis result of the source sample is directly distorted. In the quantitative contraction device in the present application, the source sample container 21 is detachably connected to the container tube 22, that is, when different kinds of source samples are contracted, different source sample containers 21 can be connected to the container tube 22, each source sample container 21 is used for holding one source sample, and cross contamination of the source samples is fundamentally avoided.
The source sample container 21 may be placed within the container tube 22 manually or automatically. If automatic placement is adopted, the quantitative division device may further include a gripper that picks up the source sample container 21 and automatically places the source sample container 21 in the container tube 22.
The connection between the source sample container 21 and the container tube 22 may be various, and may specifically be a threaded connection, a snap connection, or the like.
In particular, the source sample container 21 may be structured like a test tube; the top of the containment tube 22 has an opening through which the source sample container 21 may extend into the containment tube 22 to connect with the containment tube 22.
It should be noted that all the structures capable of driving the source sample carrier assembly 2 to rotate may be the first rotation mechanism 3 mentioned in the above embodiments. For example, the first rotation mechanism 3 is a rotation mechanism such as a rotary motor, or the first rotation mechanism 3 is a combination of a linear motion mechanism such as a pneumatic cylinder, a hydraulic cylinder, or a linear motor and a transmission mechanism, and the transmission mechanism can convert the linear motion of the linear motion mechanism into a rotation motion.
In some embodiments, as shown in fig. 2, in order to make the structure of the first rotation mechanism 3 simpler, the first rotation mechanism 3 includes a first power source 31, a source sample container holder 32, and a support 33; the receptacle tube 22 is mounted to the source sample receptacle holder 32; the first power source 31 is mounted on the support 33, the first power source 31 is connected to the source sample container holder 32, and the first power source 31 is configured to drive the source sample container holder 32 to rotate with respect to the support 33.
The support 33 in the first rotating mechanism 3 serves as a load bearing and provides a support for the installation of the first power source 31. In addition, in order to make the source sample container holder 32 rotate more stably, a bearing is provided between the source sample container holder 32 and the support 33, that is, the source sample container holder 32 is rotatably connected with the support 33.
Specifically, the first power source 31 may be a rotating motor, and a power output shaft thereof is directly connected to the source sample container holder 32.
Similarly, all the structures capable of driving the first rotating mechanism 3 to rotate may be the second rotating mechanism 4 mentioned in the above embodiments.
In some embodiments, as shown in fig. 2, in order to make the structure of the second rotating mechanism 4 more stable, the second rotating mechanism 4 includes a driving assembly 41, a rotating shaft 42 and a rotating mechanism fixing seat 43; the rotating shaft 42 penetrates through the rotating mechanism fixing seat 43, and two ends of the rotating shaft 42 are respectively connected with the driving assembly 41 and the first rotating mechanism 3; the driving assembly 41 is installed on the rotating mechanism fixing seat 43, and the driving assembly 41 is used for driving the rotating shaft 42 to rotate relative to the rotating mechanism fixing seat 43.
Specifically, when the weighing device is used, the driving assembly 41 drives the rotating shaft 42 to rotate relative to the rotating mechanism fixing seat 43, and the rotating shaft 42 drives the first rotating mechanism 3 to rotate, so that the source sample in the source sample bearing assembly 2 connected with the first rotating mechanism 3 falls to the weighing mechanism 1.
The rotating mechanism fixing seat comprises a seat body 431, a bearing with a seat 432, a bearing 433 and a bearing fixing ring 434, the bearing fixing ring 434 limits the axial position of the bearing 433, the bearing 432 with the seat is fixed on the seat body 431, the rotating shaft 42 is rotatably connected with the seat body 431 through the bearing 432 with the seat and the bearing 433, and the axial positioning of the rotating shaft 42 is completed by the bearing 432 with the seat and the bearing 433.
Note that, since the rotation axis of the first rotating mechanism 3 with respect to the second rotating mechanism 4 is parallel to the horizontal plane, the rotation axis of the rotating shaft 42 is parallel to the horizontal plane.
When the first rotating mechanism 3 comprises the first power source 31, the source sample container holder 32 and the support 33, as shown in fig. 2, the rotating shaft 42 is connected to the support 33, that is, the rotating shaft 42 drives the first rotating mechanism 3 to rotate through the support 33.
In some embodiments, as shown in fig. 2, the driving assembly 41 includes a second power source 411 and a power transmission structure 412, both of which are mounted on the rotating mechanism fixing seat 43, the second power source 411 and the rotating shaft 42 are connected to the power transmission structure 412, and the power transmission structure 412 is used for transmitting the power of the second power source 411 to the rotating shaft 42. The above-mentioned structure of the driving assembly 41 is more convenient for installing the detecting mechanism 7 capable of detecting the rotation angle of the rotating shaft 42.
Wherein the second power source 411 may be a rotating motor; the power transmission structure 412 may employ a belt transmission, a chain transmission, a gear transmission, or the like.
Taking belt conveying as an example for specific explanation, the power transmission structure 412 includes a driving wheel, a driven wheel and a belt, the driving wheel is connected with the power output shaft of the second power source 411, the driven wheel is connected with the rotating shaft 42, the belt is sleeved on the driving wheel and the driven wheel and is in a tensioning state, and when the driving wheel rotates, the belt moves along with the driving wheel and drives the driven wheel to rotate.
In some embodiments, in order to enable the rotating shaft 42 to drive the first rotating mechanism 3 to rotate more stably, a guide shaft support 5 and a rotating mechanism adaptor 6 are arranged between the rotating shaft 42 and the first rotating mechanism 3, the guide shaft support 5 is sleeved on the end portion of the rotating shaft 42, and two sides of the rotating mechanism adaptor 6 are respectively connected with the first rotating mechanism 3 and the guide shaft support 5.
The guide shaft support 5 is sleeved on the end of the rotating shaft 42, so that a large contact area is formed between the guide shaft support 5 and the rotating shaft 42, the rotating shaft 42 can limit the guide shaft support 5 along the radial direction and the axial direction of the rotating shaft 42, two sides of the rotating mechanism adaptor 6 are respectively connected with the first rotating mechanism 3 and the guide shaft support 5, so that indirectly, the rotating mechanism adaptor 6 is hung on the rotating shaft 42 through the guide shaft support 5, and the rotating shaft 42 can stably drive the first rotating mechanism 3 to rotate through the guide shaft support 5 and the rotating mechanism adaptor 6.
As shown in fig. 2, the rotating mechanism adaptor 6 may be a connecting block.
Specifically, the connection manner of the rotating mechanism adaptor 6 and the first rotating mechanism 3 and the connection manner of the rotating mechanism adaptor 6 and the guide shaft support 5 may be welding, screwing, or the like.
In some other embodiments, the rotating shaft 42 may also be directly connected to the support 33 in the first rotating mechanism 3.
In some embodiments, as shown in fig. 2, the quantitative division device further includes a detection mechanism 7 for detecting a rotation angle of the first rotating mechanism 3, and the detection mechanism 7 is mounted on the driving assembly 41 and the rotating mechanism fixing base 43. The detection mechanism 7 can detect the rotation angle of the first rotation mechanism 3 in real time, and is more convenient for a user to control.
Specifically, as shown in fig. 2 and 3, the detection mechanism 7 includes a photoelectric switch 71, a photoelectric switch block 72, and a photoelectric switch adapter plate 73, the photoelectric switch block 72 is mounted on the driving assembly 41 and rotates synchronously with the rotating shaft 42, the photoelectric switch block 72 has a plurality of through slots, the photoelectric switch 71 is connected to the rotating mechanism fixing base 43 through the photoelectric switch 71 adapter plate, and the photoelectric switch 71 is used for reading the positions of the through slots.
The use principle is as follows:
when the rotating shaft 42 rotates, the photoelectric switch blocking piece 72 rotates synchronously with the rotating shaft 42, the photoelectric switch 71 is provided with a light beam emitting end and a light beam receiving end, the bottom of the photoelectric switch blocking piece 72 is positioned between the light beam emitting end and the light beam receiving end, because the photoelectric switch blocking piece 72 is provided with a plurality of through grooves, when the light beam emitted by the light beam emitting end passes through the through grooves, the light beam emitted by the light beam emitting end can be received by the light beam receiving end, when the photoelectric switch blocking piece 72 blocks the transmission of the light beam, the light beam emitted by the light beam emitting end can not be received by the light beam receiving end, and the rotating angle of the photoelectric switch blocking piece.
Specifically, the photoelectric switch plate 72 is connected to the power transmission structure 412 in the driving assembly 41, and when the power transmission structure 412 includes a driven wheel, the photoelectric switch plate 72 is connected to the driven wheel, and the driven wheel drives the rotating shaft 42 and the photoelectric switch plate 72 to rotate together.
In some embodiments, as shown in fig. 1, the weighing mechanism 1 includes a scale 11, a weighing tray 12, and a receiving container 13 placed on the weighing tray 12, the weighing tray 12 being provided on the scale 11.
The receiving container 13 is used for receiving the source sample dropped from the source sample bearing assembly 2, and the weighing tray 12 holds the receiving container 13 so that the receiving container 13 is stably positioned on the weighing device 11. The weighing mechanism 1 is simple and stable in structure, and can ensure that the receiving container 13 stably receives the source sample.
The receiving container 13 may be placed on the weighing tray 12 manually or automatically. If automatic placement is adopted, the quantitative division device can further comprise a mechanical claw, the mechanical claw picks up the receiving container 13, and the receiving container 13 is automatically placed on the weighing tray 12.
In some embodiments, the weighing mechanism 1 further comprises a heat shield 14, and the weighing tray 12 is connected to the scale 11 through the heat shield 14. The heat insulation plate 14 effectively reduces heat exchange between the weighing tray 12 and the weighing device 11, and plays a role in protecting the source sample.
In some embodiments, in order to realize the full-automatic control of the division process, the quantitative division device further comprises a control system, the weighing device 11, the first rotating mechanism 3 and the second rotating mechanism 4 are all connected with the control system, the weighing device 11 is used for sending the weight information of the object above the weighing tray 12 to the control system, and the control system is used for receiving the weight information and controlling the operation states of the first rotating mechanism 3 and the second rotating mechanism 4.
The weighing device 11 can feed back the quality of the source sample to the control system in real time, and the control system controls the running states of the first rotating mechanism 3 and the second rotating mechanism 4 according to whether the weight is changed or whether the preset requirement is met, so that the closed-loop control of division is realized, and the manpower requirement in the source sample processing process is reduced.
It should be noted that the control system controls the motion mechanism to perform corresponding operations through real-time information sent by the photoelectric sensor, the pressure sensor and the temperature sensor belongs to the technical common knowledge known to those skilled in the art, and the operation principle of the control system is not described in detail.
An embodiment of the second aspect of the present invention is to provide a quantitative reduction method, where the quantitative reduction method provided by the embodiment of the second aspect of the present invention employs the quantitative reduction device provided by the embodiment of the first aspect of the present invention, and includes:
setting the sample weight m1 of the source to be divided, the second rotating mechanism 4 driving the first rotating mechanism 3 to rotate by the angle theta once, and waiting for time t;
placing a source sample within a source sample carrier assembly 2;
the weighing tray 12 acquires the weight m2 of the receiving container 13 and sends the weight information to the control system, the control system controls the first rotating mechanism 3 to drive the source sample bearing component 2 to rotate, and simultaneously controls the second rotating mechanism 4 to drive the first rotating mechanism 3 to rotate by an angle theta;
in the set time t range, the weight information sent by the weigher 11 to the control system is not changed, and the control system controls the second rotating mechanism 4 to drive the weighing device to circulate until the weight information sent by the weigher 11 to the control system is changed;
within a set time t range, the value of the weight information acquired by the weighing device 11 is gradually increased to m1+ m2, the control system controls the first rotating mechanism 3 to stop acting, and controls the second rotating mechanism 4 to drive the first rotating mechanism 3 to return to the initial position;
or within a set time t range, the weight information value sent by the weighing device 11 to the control system stays at a position smaller than m1+ m2, the control system continues to control the second rotating mechanism 4 to drive the first rotating mechanism 3 to continue rotating by the angle theta, and the process is circulated until the weight information value obtained by the weighing device 11 is m1+ m2, the control system controls the first rotating mechanism 3 to stop acting, and controls the second rotating mechanism 4 to drive the first rotating mechanism 3 to return to the initial position.
According to the quantitative division method provided by the embodiment of the second aspect of the invention, the division process is completely automatically controlled by the control system, the closed-loop control of division is realized through the weighing mechanism, the manpower requirement in the source sample processing process is reduced, and an operator can select proper m1, theta and t according to the actual requirement, can obtain samples with proper components and can achieve the optimal division precision and efficiency. The division method can also avoid that the weight information value obtained by the weighing device 11 is suddenly and greatly increased as much as possible, the division process is more controllable, and the weighing device 11 can also feed back the weight in time.
A quantitative reduction method provided by an embodiment of the second aspect of the present invention is described in detail below:
firstly, initializing a division system, setting the weight m1 of a source sample to be divided, the rotation angle theta of the first rotation mechanism 3 driven by the second rotation mechanism 4 once, and waiting time t, wherein the three data can be adjusted according to actual needs. If theta is increased, t is increased, the division precision is improved, and the single division time is increased; theta is reduced, t is reduced, division precision is reduced, and single division time is reduced;
subsequently, the source sample is placed in the source sample container 21 in the source sample carrier assembly 2, the source sample container 21 being connected to the receptacle tube 22, with the receiving container 13 on the weighing tray 12;
subsequently, the weighing tray 12 obtains the weight m2 of the receiving container 13 and sends the weight information to the control system, the control system controls the first rotating mechanism 3 to drive the source sample bearing assembly 2 to rotate, and simultaneously controls the second rotating mechanism 4 to drive the first rotating mechanism 3 to rotate by an angle theta from the vertical position to the direction of the receiving container 13;
then, in a set time t range, the weight information sent by the weigher 11 to the control system is not changed, the control system continues to control the second rotating mechanism 4 to drive the first rotating mechanism 3 to rotate by an angle theta, and the operation is circulated until the weight information sent by the weigher 11 to the control system is changed, which indicates that the source sample successfully falls into the receiving container 13;
if the value of the weight information acquired by the weighing device 11 is gradually increased to m1+ m2 within the set time t range, it indicates that the source samples in the source sample container 21 continuously drop to the receiving container 13, the inclination angle of the first rotating mechanism 3 does not need to be changed, and after the value of the weight information acquired by the weighing device 11 is m1+ m2, the control system controls the first rotating mechanism 3 to stop operating, and controls the second rotating mechanism 4 to drive the first rotating mechanism 3 to return to the initial position;
if the value of the weight information sent by the weighing device 11 to the control system stays at a position less than m1+ m2 within the set time t range, it indicates that the source sample in the source sample container 21 can not fall to the receiving container 13, the control system needs to continue to control the second rotating mechanism 4 to drive the first rotating mechanism 3 to continue rotating by the angle θ, and the process is repeated until the value of the weight information obtained by the weighing device 11 is m1+ m2, and the control system controls the first rotating mechanism 3 to stop operating and controls the second rotating mechanism 4 to drive the first rotating mechanism 3 to return to the initial position.
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 the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A quantitative division device is characterized by comprising a weighing mechanism (1), a source sample bearing component (2), a first rotating mechanism (3) and a second rotating mechanism (4);
the source sample bearing assembly (2) is arranged on the first rotating mechanism (3), and the first rotating mechanism (3) is used for driving the source sample bearing assembly (2) to rotate;
the second rotating mechanism (4) is connected with the first rotating mechanism (3), the second rotating mechanism (4) is used for driving the first rotating mechanism (3) to rotate, and the rotating axis is parallel to the horizontal plane;
the weighing mechanism (1) is positioned below the source sample carrying component (2), and the weighing mechanism (1) is used for receiving the source sample dropped from the source sample carrying component (2).
2. The quantitative reduction device according to claim 1, wherein the source sample carrying assembly (2) comprises a source sample container (21) and a receptacle tube (22), the receptacle tube (22) being mounted to the first rotation mechanism (3), the source sample container (21) being detachably connected to the receptacle tube (22), the source sample container (21) being adapted to carry a source sample.
3. A quantitative reduction device according to claim 2, wherein the first rotation mechanism (3) comprises a first power source (31), a source sample container holder (32) and a support (33);
the container tube (22) is mounted on the source sample container holder (32);
the first power source (31) is mounted on the support (33), the first power source (31) is connected with the source sample container fixing seat (32), and the first power source (31) is used for driving the source sample container fixing seat (32) to rotate relative to the support (33).
4. The quantitative reduction device according to claim 1, wherein the second rotation mechanism (4) comprises a driving assembly (41), a rotation shaft (42) and a rotation mechanism fixing seat (43);
the rotating shaft (42) penetrates through the rotating mechanism fixing seat (43), and two ends of the rotating shaft (42) are respectively connected with the driving assembly (41) and the first rotating mechanism (3);
the driving assembly (41) is installed on the rotating mechanism fixing seat (43), and the driving assembly (41) is used for driving the rotating shaft (42) to rotate relative to the rotating mechanism fixing seat (43).
5. The quantitative reduction device according to claim 4, wherein the driving assembly (41) comprises a second power source (411) and a power transmission structure (412) both mounted on the rotating mechanism fixing seat (43), the second power source (411) and the rotating shaft (42) are both connected with the power transmission structure (412), and the power transmission structure (412) is used for transmitting the power of the second power source (411) to the rotating shaft (42).
6. The quantitative reduction device according to claim 4, wherein a guide shaft support (5) and a rotating mechanism adaptor (6) are arranged between the rotating shaft (42) and the first rotating mechanism (3), the guide shaft support (5) is sleeved on the end part of the rotating shaft (42), and two sides of the rotating mechanism adaptor (6) are respectively connected with the first rotating mechanism (3) and the guide shaft support (5).
7. The quantitative reduction device according to claim 4, further comprising a detection mechanism (7) for detecting a rotation angle of the first rotation mechanism (3), wherein the detection mechanism (7) is mounted to the driving assembly (41) and the rotation mechanism fixing seat (43).
8. The quantitative reduction device according to any one of claims 1 to 7, wherein the weighing mechanism (1) comprises a weigher (11), a weighing tray (12) and a receiving container (13) placed on the weighing tray (12), the weighing tray (12) being provided on the weigher (11).
9. The quantitative reduction device according to claim 8, further comprising a control system, wherein the weighing device (11), the first rotating mechanism (3) and the second rotating mechanism (4) are connected with the control system, the weighing device (11) is used for sending weight information of an object above the weighing tray (12) to the control system, and the control system is used for receiving the weight information and controlling the operation states of the first rotating mechanism (3) and the second rotating mechanism (4).
10. A quantitative reduction method, wherein the quantitative reduction device according to claim 9 is used, comprising:
setting the sample weight m1 of the source to be divided, and the second rotating mechanism (4) driving the first rotating mechanism (3) to rotate for a single time by the angle theta, and waiting for time t;
placing a source sample within the source sample carrier assembly (2);
the weighing tray (12) obtains the weight m2 of the receiving container (13) and sends weight information to the control system, the control system controls the first rotating mechanism (3) to drive the source sample bearing assembly (2) to rotate, and simultaneously controls the second rotating mechanism (4) to drive the first rotating mechanism (3) to rotate by an angle theta;
within a set time t range, the weight information sent by the weighing device (11) to the control system is not changed, and the control system continues to control the second rotating mechanism (4) to drive the first rotating mechanism (3) to rotate by an angle theta, so that circulation is performed until the weight information sent by the weighing device (11) to the control system is changed;
within a set time t range, the numerical value of the weight information acquired by the weighing device (11) is gradually increased to m1+ m2, and a control system controls the first rotating mechanism (3) to stop acting and controls the second rotating mechanism (4) to drive the first rotating mechanism (3) to return to an initial position;
or within a set time t range, the weight information value sent by the weighing device (11) to the control system stays at a position smaller than m1+ m2, the control system continues to control the second rotating mechanism (4) to drive the first rotating mechanism (3) to continue rotating by an angle theta, and the operation is circulated until the weight information value obtained by the weighing device (11) is m1+ m2, the control system controls the first rotating mechanism (3) to stop operating, and controls the second rotating mechanism (4) to drive the first rotating mechanism (3) to reset to the initial position.
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| CN111207984B (en) | 2021-01-26 |
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