A dispensing bottle and an automatic dispensing and weighing mechanism

Abstract

This invention discloses a feeding bottle, comprising a feeding bottle body, a feeding base plate, a feeding bottle cap, and a stirrer. The feeding base plate is detachably connected to the bottom of the feeding bottle body and can move relative to it. The bottom of the feeding bottle body has one or more eccentrically arranged feeding holes A. The feeding base plate has feeding holes B that fit with the feeding holes A. The opening and closing and size of the feeding channel can be adjusted by moving the feeding holes B to offset them from the feeding holes A. The feeding bottle cap is detachably and sealingly connected to the feeding bottle body. The stirrer, partially located inside the feeding bottle body, is mounted on the feeding bottle cap and can rotate relatively independently. Furthermore, an automatic feeding and weighing mechanism is also disclosed. The device of this invention has a simple and compact structure and a high degree of automation. It ensures that the sample is free from dust and changes in its state of contact with air, and ensures that the sample is stirred evenly without segregation. It solves the problems of difficult feeding due to blockage and uncontrollable feeding speed, ensures accurate feeding, and the bottle mouth is easy to clean, avoiding cross-contamination.

Description

Technical Field

[0001] This invention belongs to the field of analysis and metering technology for solid powders such as fuels, and in particular relates to a discharge bottle and an automatic discharge weighing mechanism. Background Technology

[0002] When testing solid substances such as coal, ore, biomass, and pharmaceuticals, it is usually necessary to prepare the test samples into small-volume powders. Samples within a specific mass range must be accurately weighed according to the testing methods for different samples, and precise weighing of the powdered samples may also be required. Furthermore, the accuracy requirements for weighing trace amounts of solid powder samples are high. For example, in determining the coulombic sulfur content of coal samples, a sample of 50 mg is typically required, with an error range within ±5 mg and a feed orifice size generally within 5 mm. This precise control of the powder sample's feed range and orifice size is beyond the capabilities of typical small valves.

[0003] Existing sampling and weighing methods have the following drawbacks:

[0004] 1. Existing sampling and weighing mechanisms require a robotic arm to take samples into the weighing hopper using a sampling spoon, which can easily cause spillage and dust.

[0005] 2. Existing weighing methods using sampling spoons or vibratory feeding methods result in single sampling points and are prone to stratification and segregation of samples with different particle sizes, leading to poor sample representativeness. For example, Chinese patent application CN20182160694 discloses an automatic uniform material vibratory feeder and automatic sample feeding and weighing system, but its vibratory feeding method easily causes stratification and segregation of coal samples with different particle sizes.

[0006] 3. Existing plunger-type feeding weighing mechanisms have small feeding holes to ensure sample feeding accuracy, which easily causes sample blockage and is difficult to clean. The sample is also prone to blockage after being compacted.

[0007] 4. Existing sampling and weighing mechanisms use a sampling spoon or sampling hole with a fixed volume to collect and dispense samples. This results in low sampling efficiency and poor weighing accuracy for small-volume powder samples.

[0008] 5. Existing sampling and weighing mechanisms have multiple transfer devices during the sample feeding process, resulting in a complex and large sample dropping mechanism with a small sample dropping hole that is difficult to clean inside.

[0009] 6. Existing sampling and weighing mechanisms cannot perform multiple consecutive weighings after a single sample is deposited, and the remaining sample cannot be recovered after weighing.

[0010] Therefore, there is an urgent need to design a bottle feeding and automatic feeding and weighing mechanism. Summary of the Invention

[0011] To address the shortcomings of existing technologies, this invention presents an improved design for a sample dispensing bottle and an automatic dispensing and weighing mechanism. This weighing mechanism features a simple, compact structure and a high degree of automation. It can simultaneously fill multiple sample bottles with multiple samples, and the dispensing bottle has a sealed inlet and outlet to ensure the sample remains free from dust and changes in its state of contact with air. The dispensing bottle incorporates a stirring and auxiliary dispensing mechanism, ensuring uniform mixing and preventing segregation, resulting in high sample representativeness. This solves problems such as clogging and difficulty in dispensing. The size of the dispensing outlet is adjustable, resolving the issue of uncontrollable dispensing speed and ensuring accurate dispensing. Furthermore, the wide inlet of the dispensing bottle facilitates cleaning and avoids cross-contamination. In addition, the dispensing bottle and automatic dispensing and weighing mechanism can continuously weigh multiple samples in a closed space, and if the sample test results exceed the tolerance, the remaining sample in the dispensing bottle can be used for re-dispensing and weighing, enabling automatic retesting.

[0012] This invention provides a discharge bottle, comprising a discharge bottle body, a discharge base plate, a discharge bottle cap, and a stirrer. The discharge base plate is detachably connected to the bottom of the discharge bottle body and can move relative to it. The bottom of the discharge bottle body has one or more eccentrically arranged discharge holes A. The discharge base plate has discharge holes B that fit with the discharge holes A. The opening and closing and size of the discharge channel can be adjusted by moving the discharge holes B and misaligning them with the discharge holes A. The discharge bottle cap is detachably and sealingly connected to the discharge bottle body. The stirrer, partially located inside the discharge bottle body, is mounted on the discharge bottle cap and can rotate relatively independently.

[0013] Preferably, the material discharge hole A and the material discharge hole B are triangular, oblong, square, or round holes.

[0014] Preferably, the outer periphery of the discharge bottle body is provided with a clamping and positioning surface for clamping, grasping and positioning. Specifically, the clamping and positioning surface is a stepped planar structure arranged in the vertical direction, and the number of clamping and positioning surfaces is two or more.

[0015] Preferably, the bottom plate of the material discharge is in close contact with the bottom surface of the material discharge bottle above it, and the bottom plate of the material discharge is provided with a recessed structure with an arc-shaped groove to accommodate the material discharge bottle. The arc-shaped groove is a groove arranged in an arc shape within the recessed structure, and the material discharge hole B is opened in the arc-shaped groove.

[0016] Preferably, the material discharge base plate has a transmission surface around its periphery for receiving external force transmission, and a mounting hole is provided at the center of the recessed structure on the material discharge base plate. The mounting hole can cooperate with a blind hole opened at the bottom of the material discharge bottle. The mounting hole and the blind hole can be detachably connected by a mounting shaft. A rotation positioning surface is provided between the mounting hole and the mounting shaft so that the position of the material discharge hole B can be adjusted by rotating the material discharge base plate with external force.

[0017] Preferably, the agitator includes a lower agitator rod and an upper agitator drive wheel. The agitator rod is fixedly connected to the agitator drive wheel. The agitator rod is arranged in a horizontal direction. The agitator is provided with a feeding wire perpendicular to the discharge hole A. The feeding wire is a spiral wire structure that can extend and retract into the discharge hole A.

[0018] In another aspect, the present invention also discloses an automatic material feeding and weighing mechanism, comprising a feeding bottle, a positioning plate, a crucible, a weighing device, a transmission mechanism, and a drive clutch mechanism as described in any of the above claims. The feeding bottle is detachably fixed on the positioning plate, and the crucible and the weighing device are located below the feeding bottle. The drive clutch mechanism is disposed on the positioning plate and can drive the transmission mechanism to move horizontally toward the feeding bottle. The transmission mechanism is used to drive the stirrer of the feeding bottle to rotate and can adjust the opening degree of the feeding port between the feeding hole B and the feeding hole A by driving the movement of the feeding bottom plate.

[0019] Preferably, the automatic material feeding and weighing mechanism further includes a sensor switch. The sensor switch, which is fixed on the transmission mechanism, is located on the side below the positioning plate near the material feeding base plate. The sensor switch is used to detect whether the upper material feeding hole B and the material feeding hole A are in a completely misaligned initial state. The positioning plate is provided with a wedge-shaped through hole. The material feeding bottle can be fixed at the narrow end of the wedge-shaped through hole. The drive clutch mechanism and the transmission mechanism are located at the wide end of the wedge-shaped through hole.

[0020] Preferably, the transmission mechanism includes two sets of transmission wheels and a transmission motor. The transmission motor is connected to the transmission wheels, and the transmission wheels are gears. The two sets of transmission wheels and the transmission motor are located on the upper and lower sides of the positioning plate respectively through a U-shaped plate. The upper transmission wheel can drive the stirrer to rotate, and the lower transmission wheel can drive the material discharge bottom plate to move relative to the material discharge bottle.

[0021] In another aspect, the present invention also discloses an operating method for the above-mentioned automatic material feeding and weighing mechanism, including:

[0022] Step 1: In the initial state, open the cap of the discharge bottle, add the sample to be tested into different discharge bottles, seal the cap tightly, and place the discharge bottles in their respective positions.

[0023] Step 2: Transfer and fix the dispensing bottle onto the positioning plate of the automatic dispensing and weighing mechanism;

[0024] Step 3: Place the crucible at the weighing position below the material discharge hole A and above the weighing device;

[0025] Step 4: The drive clutch mechanism extends to engage the transmission wheel of the transmission mechanism with the agitator on the discharge bottle and the transmission surface of the discharge bottom plate, and at the same time drives the induction switch to move to the bottom plate of the discharge to detect whether the discharge hole B is in the initial state directly above the induction switch.

[0026] Step 5: The transmission mechanism drives the stirrer to rotate to continuously stir the sample; and drives the transmission mechanism to rotate the material discharge plate to open the material discharge channel to adjust the opening of the material discharge port.

[0027] Step 6: The weighing device monitors the weight of the material in real time and adjusts the opening of the feeding port according to the sample mass in the crucible until the material reaches the required sample mass range and then stops feeding.

[0028] Step 7: The transmission mechanism drives the bottom plate to rotate to close the material discharge channel until the induction switch detects that the material discharge hole B is in the initial state, and then the transmission mechanism stops moving.

[0029] Step 8: Drive the clutch mechanism to retract, causing the transmission mechanism to engage and disengage with the agitator and the transmission surface of the discharge bottle body.

[0030] Compared with the prior art, the feeding bottle and automatic feeding and weighing mechanism of the present invention have the following beneficial effects:

[0031] (1) The sample feeding bottle of the present invention can directly utilize existing sample containers for sampling and weighing. The closed container reduces dust and changes in the sample's state when in contact with air. It also allows for stirring and mixing of the sample inside the sealed sampling feeder, ensuring that the sample does not segregate and has high representativeness. Internal stirring can also solve the problems of internal blockage and difficulty in feeding. The size of the sample feeding port can be adjusted by aligning the feeding holes A and B, allowing for automatic feeding and weighing of different sample quantities. When weighing a large sample quantity, the large hole ensures rapid feeding; when weighing a small sample quantity or to the required sample mass, the size of the feeding port is adjusted to reduce the feeding speed, ensuring accurate and reliable sample quality.

[0032] (2) The closed-type automatic feeding and weighing mechanism for recyclable samples in this invention has a simple and compact structure, unlike large-scale material feeding and weighing devices. The size of the sampling discharge hole in this invention is adjustable, the sampling discharge port is wide and easy to clean, and the discharge port can be automatically cleaned to reduce cross-contamination between different samples and ensure sample representativeness. Through the inductive switch and drive clutch mechanism, multiple samples can be automatically and continuously weighed in a closed space after a single weighing, and the weighed samples can be recycled to reduce waste and pollution. The recycled samples can be used for re-weighing after exceeding the tolerance, realizing the function of re-weighing. This automatic feeding and weighing mechanism with a discharge bottle is particularly suitable for accurately weighing solid powder samples such as small particulate solid fuels (e.g., coal samples within 50±5mg), and its degree of automation is high.

[0033] (3) The automatic feeding and weighing mechanism of the present invention is safe and reliable to operate and easy to operate. It can control the feeding hole B to rotate from the original position when it is misaligned to the overlapping opening position of the feeding hole A directly above it through the induction switch and the transmission motor below. In addition, it can safely control the drive clutch mechanism to drive the transmission mechanism to engage or disengage the two passive transmission gears of the upper and lower parts of the feeding bottle. When necessary, it can realize the functions of stirring and adjusting the opening of the feeding port, and it can facilitate the replacement or cleaning of the feeding bottle. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0035] Figure 1 This is a side sectional view of the discharge bottle in this invention;

[0036] Figure 2 yes Figure 1 Schematic diagram of the discharge bottle;

[0037] Figure 3 yes Figure 2 A bottom view of the discharge bottle body;

[0038] Figure 4 yes Figure 1 Schematic diagram of the bottom plate for material feeding;

[0039] Figure 5 This is a top view of the blanking base plate, where the dotted lines represent the arc-shaped groove.

[0040] Figure 6 yes Figure 1 Schematic diagram of the dropper cap and agitator;

[0041] Figure 7 This is a schematic diagram of the automatic material feeding and weighing mechanism in this invention;

[0042] Figure 8 This is a schematic diagram of the weighing device in this invention;

[0043] Figure 9 This is a schematic diagram of the transmission mechanism at the top of the present invention, which is used to drive the agitator.

[0044] Figure 10 This is a three-dimensional view of the upper part of the automatic material feeding and weighing mechanism in this invention.

[0045] Figure label:

[0046] 1. Feeding bottle; 1.1. Feeding bottle body; 1.1.1. Material hopper; 1.1.2. Feeding hole A; 1.1.3. Clamping and positioning surface; 1.2. Feeding base plate; 1.2.1. Transmission surface; 1.2.2. Feeding hole B; 1.2.3. Mounting hole; 1.3. Feeding bottle cap; 1.4. Stirrer; 1.4.1. Stirring drive wheel; 1.4.2. Stirring rod; 1.4.3. Feeding wire; 2. Crucible; 3. Weighing device; 3.1. Weighing balance; 3.2. Weighing beam; 4. Drive motor; 5. Transmission wheel; 6. Drive clutch mechanism; 7. Inductive switch. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0048] Example 1:

[0049] See Figure 1-6As shown, in order to accurately weigh powdery or granular materials (such as coal samples within 50±5mg) with a required weighing error range of less than 0.1g, this invention improves the design of a feeding bottle 1, which includes a feeding bottle body 1.1, a feeding bottom plate 1.2, a feeding bottle cap 1.3, and a stirrer 1.4. The feeding bottom plate 1.2 is detachably connected to the bottom of the feeding bottle body 1.1 and can move relative to it (including relative translation and relative rotation). The feeding bottle body 1.1 contains a material storage bin 1.1.1, and the bottom of the feeding bottle body 1.1 has one or more eccentrically positioned feeding points. Hole A1.1.2, i.e., discharge hole A, is located at the bottom of the bottle body, not on the central axis. The discharge base plate 1.2 is provided with discharge hole B1.2.2, which fits with the upper discharge hole A1.1.2. The opening and closing and size of the discharge channel can be adjusted by moving discharge hole B and misaligning it with discharge hole A. In addition, the discharge bottle cap 1.3 and the discharge bottle body 1.1 are detachably and sealed (preferably threaded connection) to form a sealed cavity. A stirrer 1.4, part of which is located in the discharge bottle body 1.1, is installed on the discharge bottle cap 1.3 and can rotate independently, thereby mixing the sample and accelerating the discharge.

[0050] Therefore, it can be seen that the feeding bottle of the present invention has a compact structure, with a stirring and auxiliary feeding mechanism inside, which ensures that the sample can be stirred evenly without segregation and that the sample has high representativeness. It solves the problems of clogging and difficulty in feeding. The size of the feeding port can be adjusted, which solves the problem of uncontrollable feeding speed and ensures accurate feeding. In addition, the feeding bottle has a wide inlet, which is easy to clean and can avoid cross-contamination.

[0051] In another embodiment, see Figure 2-3 As shown, the upper part of the discharge bottle 1 is a container opening with four closed sides, and the middle is a material storage chamber 1.1.1 for holding the sample. The bottom of the discharge bottle has one or more eccentrically arranged discharge holes A1.1.2, through which the sample can be discharged from the discharge holes A to the discharge base plate 1.2 below. In addition, the outer periphery of the discharge bottle body 1.1.1 has clamping and positioning surfaces 1.1.3 for gripping, grasping, and positioning. The discharge bottle 1 includes a bottle body, a bottle cap, and a discharge base plate. The top cap can be opened and closed to seal the container for holding the sample. The discharge bottle 1 can be round, square, or other shapes. The discharge bottle cap 1.3 can contact and seal with the discharge bottle body 1.1, forming a sealed material storage cavity. The sealing method can be surface contact, line contact sealing, or sealing by screwing or buckling.

[0052] In addition, the discharge bottle body 1.1 and the discharge base plate 1.2 may have one or more discharge holes A and B. Discharge holes A1.1.2 and B1.2.2 are preferably triangular, oblong, square, or round holes of the same size, with a diameter of 3–6 mm (the diameter of discharge holes A and B can be less than 1 cm) to facilitate precise control of the amount of powder falling. The clamping and positioning surface 1.1.3 can specifically be a stepped planar structure arranged vertically, and the number of clamping and positioning surfaces arranged circumferentially can be four. This facilitates the robotic arm to grasp and move the discharge bottle 1 through the planar structure, and also facilitates the positioning platform with wedge-shaped through holes to fix the bottle body of the discharge bottle 1 by the right-angle engagement between the steps (see...). Figure 7 and Figure 10 ).

[0053] In another embodiment, see Figure 4-5 As shown, the bottom surface of the discharge base plate 1.2 is in contact with the bottom surface of the discharge bottle 1.1 above it, and their central axes coincide. The discharge base plate 1.2 is provided with a recessed structure with an arc-shaped groove to accommodate the discharge bottle 1.1. The recessed structure is used to accommodate the bottom surface of the discharge bottle 1.1 and its protruding discharge hole A. The arc-shaped groove is a groove with a circular arc angle arranged within the recessed structure (see...). Figure 5 The dotted line indicates an arc-shaped groove (which, compared to an annular groove, has only one arc angle and can also serve as a mechanical limit for rotation), so as to fit tightly with the protruding discharge hole A on the discharge bottle body 1.1, which is low in the middle and high around the edges. The arc-shaped groove is provided with a discharge hole B1.2.2, which is located at the bottom of the arc-shaped groove, so that it can fit tightly with the upper protruding discharge hole A and adjust the opening. Because the downward protruding part of the discharge hole A extends into the arc-shaped groove, it can play a positioning role during rotation. At this time, the sample can fall from the discharge hole A and fall outward through the discharge hole B of the arc-shaped groove, ensuring that the discharge base plate 1.2 and the bottom surface of the discharge bottle body 1.1 are sealed and can rotate relative to each other, preventing sample powder from falling into the gap when the two rotate relative to each other.

[0054] Furthermore, the material dropping base plate 1.2 has a transmission surface 1.2.1 around its periphery for receiving external force transmission. The transmission surface 1.2.1 is preferably a gear surface, but it can also be a transmission method such as friction transmission. The material dropping base plate 1.2 can adjust the position of the material dropping hole B by freely rotating horizontally within the recessed structure under the action of external force. Furthermore, to better achieve a detachable connection and relative free rotation between the discharge base plate 1.2 and the discharge bottle body 1.1, a mounting hole 1.2.3 is provided at the center of the circular recessed structure on the discharge base plate 1.2. The mounting hole 1.2.3 can mate with a blind hole opened at the bottom of the discharge bottle body 1.1. The mounting hole 1.2.3 and the blind hole can be detachably fixedly connected by a screw thread (i.e., the blind hole of the discharge base plate can be provided with an internal thread that mates with the screw). A bearing sleeve is also provided between the outside of the screw, which serves as the mounting shaft, and the mounting hole 1.2.3 of the discharge base plate, as a rotation positioning surface. This allows the discharge base plate 1.2 to rotate relative to the fixed discharge bottle body 1.1. The opening and closing of the discharge channel and the size of the opening can be adjusted by misalignment. When the two holes A and B are completely misaligned, the discharge channel is closed. When the two holes A and B are aligned, the discharge channel is at its maximum. When the two holes A and B are staggered, the opening size of the discharge channel can be adjusted according to the staggered position.

[0055] It is worth mentioning that the aforementioned transmission surface 1.2.1, mounting holes 1.2.3, and screw threads are designed so that the transmission surface on the side of the discharge base plate can take force when necessary, thereby controlling the relative free rotation of the discharge base plate 1.2 and the discharge bottle body 1.1. This not only makes better use of the side workspace to accommodate the movable transmission mechanism, but also facilitates the overall movement or cleaning of the discharge bottle. Conversely, if the discharge base plate 1.2 is fixed to the bottom of the discharge bottle body 1.1 by a freely rotatable rotating support shaft, it would be inconvenient to move the crucible 2 and move the discharge bottle 1 as a whole, and the low space utilization would result in a less compact overall structural layout of the weighing mechanism. In addition, the discharge base plate 1.2 is provided with an arc-shaped groove for mechanically limiting the excessive rotation of the discharge hole B. This prevents the electric drive of the discharge hole B to rotate 360 ​​degrees during discharge, effectively controlling the extreme position of the discharge hole B during rotation.

[0056] In another embodiment, see Figure 6As shown, the stirrer 1.4 and the discharge bottle cap 1.3 are assembled as a single unit, and the stirrer 1.4 can rotate freely relative to the discharge bottle cap 1.3. The stirrer 1.3 includes a lower stirring rod 1.4.2 and an upper stirring drive wheel 1.4.1. The stirring rod 1.4.2 and the stirring drive wheel 1.4.1 are fixedly connected, and the rotation of the stirring rod 1.4.2 is transmitted by the rotation of the stirring drive wheel 1.4.1 through external force. The stirring rod 1.4.2 is horizontally positioned around its circumference and a feeding wire 1.4.3 is perpendicular to the stirring rod 1.4.2 or the discharge hole A. The feeding wire can be made of steel wire or nylon and has a spiral wire structure that can extend and retract into the discharge hole A. The elastic feeding wire 1.4.3 can slightly extend into the discharge hole A when it is rotated above the discharge hole A (without extending below the discharge hole A), thereby assisting in the discharge of samples such as adhering coal samples in the discharge hole A and preventing the discharge hole A from becoming blocked.

[0057] Furthermore, there can be multiple stirring rods 1.4.2, which can be cylindrical or flat strips, etc. Multiple stirring rods 1.4.2 can be positioned at different heights on the stirrer 1.4 to thoroughly stir the powder sample. Additionally, a rolling bearing can be provided between the stirrer 1.4 and the discharge bottle cap 1.3 to ensure that the stirrer 1.4 can rotate freely relative to the discharge bottle body 1.1 when driven by an external force.

[0058] Example 2:

[0059] See Figure 7-10 As shown, in Figure 1-6 Based on the discharge bottle 1 shown, this invention also discloses an automatic discharge and weighing mechanism, comprising the discharge bottle 1 of Embodiment 1, a positioning plate, a crucible 2, a weighing device 3, a transmission mechanism, a drive clutch mechanism 6, and an induction switch 7. The discharge bottle 1 is detachably fixed on the positioning plate, and the positioning plate is provided with the drive clutch mechanism 6. The drive clutch mechanism 6 can drive the transmission mechanism and the induction switch 7 to move horizontally toward the discharge bottle 1. The induction switch 7 is located below the positioning plate. The transmission mechanism is used to drive the stirrer 1.4 of the discharge bottle 1 to rotate, and can adjust the discharge opening between the discharge hole B and the discharge hole A by driving the discharge bottom plate 1.2 to move.

[0060] In another embodiment, the crucible 2 has an opening at the top and a space for containing the sample. The crucible 2 is aligned with the bottom discharge channel of the discharge bottle 1, that is, it is located below the eccentric discharge hole A, and is used to catch the sample falling out of the discharge hole A of the discharge bottle 1.

[0061] In another embodiment, see Figure 8As shown, the weighing device 3 includes a weighing balance 3.1 and a weighing rod 3.2. The weighing rod 3.2 is installed on the weighing balance 3.1 and placed below the crucible 2 and the bottle body discharge port. It is used to weigh the crucible and sample mass, weigh and provide feedback on the sample mass in real time, and automatically adjust the size of the discharge channel.

[0062] In another embodiment, the transmission mechanism includes a transmission wheel 5 and a transmission motor 4. The transmission motor 4 is connected to the transmission wheel 5, which is preferably a gear, and the transmission motor is preferably a stepper motor. There are two sets of transmission mechanisms, which are disposed on the upper and lower sides of the positioning plate via U-shaped plates. That is, the transmission mechanism includes independent drive mechanisms that drive the upper agitator and the lower material discharge plate to rotate respectively. The U-shaped plates are connected to a retractable drive clutch mechanism 6, and the U-shaped plates are located within the wedge-shaped through-hole area of ​​the positioning plate. See also... Figure 9 As shown, the transmission mechanism above the positioning plate is mainly used to drive the stirrer 1.4 to rotate. The upper transmission wheel 5 can mesh with the stirring transmission wheel 1.4.1 to achieve the stirring function. The transmission mechanism below the positioning plate is used to drive the discharge base plate 1.2 to rotate relative to the discharge bottle body 1.1 to adjust the discharge port opening. The lower transmission wheel 5 can mesh with the transmission surface 1.2.1 of the discharge base plate 1.2. The discharge port opening is adjusted by controlling the rotation angle of the discharge hole B. In addition, the transmission mechanism can also drive the stirring transmission wheel 1.4.1 and the transmission surface 1.2.1 to move by friction drive or other transmission methods.

[0063] Additionally, the inductive switch 7 is located below the transmission wheel 5, near the material discharge base plate 1.2. Specifically, it can be fixed to the side of the transmission motor 4 below, used to detect whether the material discharge hole B and material discharge hole A are in a completely misaligned initial state when the drive clutch mechanism 6 extends towards the material discharge bottle 1. Below the material discharge hole B on the material discharge base plate, there can also be a sensor signal reflection device for the inductive switch 7 to check the hole position. Specifically, the material discharge base plate 1.2 can be made of plastic, while the base plate of the material discharge bottle 1 can be made of metal. The inductive switch 7 can detect metal switch signals (such as a metal detection sensor), allowing it to determine whether the material discharge hole B is directly above the inductive switch 7 by detecting the presence of a metal signal within a certain range above it, thus determining whether the material discharge base plate is in its original position where the material discharge hole B and material discharge hole A are completely misaligned. Furthermore, because the material discharge hole B has a certain depth, the inductive switch 7 can also be configured as a proximity sensor to detect the distance reflected from obstacles, thereby detecting whether the material discharge hole B is directly above the inductive switch 7 through depth changes.

[0064] See Figure 10As shown, the positioning plate is provided with a wedge-shaped through hole (i.e., a gradually changing inverted triangular V-shaped hole). The discharge bottle 1 can be fixed at the narrow end of the wedge-shaped through hole. The drive clutch mechanism 6 and the upper and lower transmission mechanisms set on the drive clutch are set at the wide end of the wedge-shaped through hole, so that the transmission mechanism and the drive clutch mechanism 6 can move relative to the discharge bottle 1 in the wedge-shaped through hole, and make the automatic discharge weighing mechanism compact and orderly.

[0065] In another embodiment, the drive clutch mechanism 6 includes a translation mechanism and an engagement buffer mechanism. The drive clutch mechanism 6 is connected to two sets of upper and lower transmission mechanisms, so that it can drive the transmission wheel 5 of the transmission mechanism to engage or disengage with the agitator of the discharge bottle and the transmission surface of the discharge bottom plate by translation or rotation. It can also drive the inductive switch 7 to move downward toward the transmission wheel 5 to detect whether the discharge hole B is in the corresponding original position of the initial state (i.e., the position completely offset from the discharge hole A). In addition, the telescopic function of the drive clutch mechanism 6 can be realized by transmission methods such as hydraulic cylinder, pneumatic cylinder, electric cylinder, gear rack, synchronous belt, etc., and its extension and retraction range is within the hollow range of the wedge-shaped through hole on the positioning plate.

[0066] It should be noted that the multiple automatic feeding and weighing mechanisms in Embodiment 2 of the present invention can be arranged along the circumferential direction, thereby reducing the area occupied and enabling the feeding bottle 1 to be matched with crucibles 2 at other different workstations by rotating the positioning plate, so as to facilitate mixing and weighing.

[0067] See also Figure 1-10 As shown, in order to fully clarify the advantages of the present invention and the cooperation relationship between its various components, the specific working steps of the feeding bottle and automatic feeding and weighing mechanism in the above embodiments will now be described:

[0068] Step 1: In the initial state, open the cap of the discharge bottle, add the sample to be tested into different discharge bottles, seal the cap tightly, and place the discharge bottles in their respective positions.

[0069] Specifically, in step 1, in the initial state, the eccentric discharge hole A1.1.2 on the discharge bottle body 1.1 of the discharge bottle 1 and the discharge hole B1.2.2 on the discharge base plate 1.2 are misaligned, i.e., in their original positions, and the discharge channel is closed; the transmission mechanism and drive clutch mechanism 6 are in the disengaged position from the discharge bottle. At this time, the drive clutch mechanism 6 can drive the transmission mechanism to safely disengage from the discharge bottle cap, ensuring that there is space for the hopper or sample to enter or exit. In addition, in each step, operations such as opening and tightening the discharge bottle cap, adding samples, and moving the discharge bottle can be performed manually or by a robotic arm.

[0070] Step 2: Transfer and fix the dispensing bottle onto the positioning plate of the automatic dispensing and weighing mechanism.

[0071] Step 3: Place the crucible at the weighing position below the discharge hole A and above the weighing device.

[0072] Step 4: The drive clutch mechanism extends to engage the transmission wheel of the transmission mechanism with the agitator on the discharge bottle and the transmission surface of the discharge bottom plate, and at the same time drives the induction switch to move below the discharge bottom plate to detect whether the discharge hole B is in the initial state directly above the induction switch.

[0073] Specifically, in step 4, when the inductive switch detects that the material feeding base plate is in its initial position, it means that the inductive switch 7 can detect the bottom of the feeding bottle 1 through the upper feeding hole B to determine that the feeding hole B is in an original position completely misaligned with the feeding hole A. That is, at this time, the feeding hole A corresponds to the position above the crucible, and the feeding hole B corresponds to the position above the inductive switch. The purpose of using the inductive switch to detect the feeding hole B is to ensure that the rotation angle is based on the detection position directly above the inductive switch, avoiding cumulative angular errors and displacements in the transmission wheel after multiple consecutive uses, thereby ensuring the adjustment accuracy of the feeding port opening each time. If the feeding hole B is not in the initial position directly above the inductive switch, the position of the feeding hole B can be adjusted manually or by the transmission mechanism to reset it.

[0074] Step 5: The transmission mechanism drives the stirrer to rotate to continuously stir the sample; and drives the transmission mechanism to rotate the material discharge plate to open the material discharge channel to adjust the opening of the material discharge port.

[0075] Specifically, in step 5, the opening of the material discharge port in the material discharge channel is adjusted in real time as needed. At this time, the material discharge port A of the material discharge bottle begins to discharge material into the crucible through the material discharge port B. The opening of the material discharge port is adjusted by the rotation angle of the lower drive wheel. The lower drive motor can preferably be a stepper motor. During material discharge, the material discharge port B and the upper material discharge port A are partially or completely overlapped, and the inductive switch 7 can only detect the position on the material discharge base plate 1.2 that is not at the material discharge port B.

[0076] Step 6: The weighing device monitors the weight of the material in real time and adjusts the opening of the discharge port according to the sample mass in the crucible until the material reaches the required sample mass range and then stops discharging.

[0077] Step 7: The transmission mechanism drives the bottom plate to rotate to close the material discharge channel until the induction switch detects that the material discharge hole B of the bottom plate is in the initial state, and then the transmission mechanism stops moving (at this time, both upper and lower transmission wheels stop moving, and the material discharge hole B is in the original state).

[0078] Step 8: Drive the clutch mechanism to retract, causing the transmission mechanism to engage and disengage with the agitator and the transmission surface of the discharge bottle body.

[0079] After precise sample collection, the dispensing bottle can be removed from the positioning plate and returned to its original position. Other sample dispensing bottles can then be used for the next sample collection, allowing for continuous collection of different samples using the same station and positioning plate. Furthermore, for multiple automatic dispensing and weighing mechanisms arranged circumferentially, the positioning plates at different stations can be rotated above the same crucible. This allows for continuous collection of the same crucible using other samples from dispensing bottles on different positioning plates, eliminating the need to change the dispensing bottles.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automatic material feeding and weighing mechanism, characterized in that, The device includes a discharge bottle, a positioning plate, a crucible, a weighing device, a transmission mechanism, and a drive clutch mechanism. The discharge bottle is detachably fixed on the positioning plate. The crucible and the weighing device are located below the discharge bottle. The drive clutch mechanism is mounted on the positioning plate and can drive the transmission mechanism to move horizontally toward the discharge bottle. The transmission mechanism is used to drive the stirrer of the discharge bottle to rotate and can adjust the discharge opening between the discharge hole B and the discharge hole A by driving the movement of the discharge bottom plate. The discharge bottle includes a discharge bottle body, a discharge base plate, a discharge bottle cap, and a stirrer. The discharge base plate is detachably connected to the bottom of the discharge bottle body and can move relative to it. The bottom of the discharge bottle body has one or more eccentrically arranged discharge holes A. The discharge base plate has discharge holes B that fit with the discharge holes A. The opening and closing and size of the discharge channel can be adjusted by moving the discharge holes B and misaligning them with the discharge holes A. The discharge bottle cap is detachably and sealingly connected to the discharge bottle body. The stirrer, which is partly located in the discharge bottle body, is mounted on the discharge bottle cap and can rotate relatively independently. The material discharge base plate and the bottom surface of the material discharge bottle are tightly fitted together. The material discharge base plate is provided with a recessed structure with an arc-shaped groove to accommodate the material discharge bottle. The arc-shaped groove is a groove arranged in an arc shape within the recessed structure. The material discharge hole B is opened in the arc-shaped groove. A portion of the material discharge hole A protrudes downward and extends into the arc-shaped groove, thus playing a positioning role during rotation. At this time, the sample can fall from the material discharge hole A and be discharged outward through the material discharge hole B in the arc-shaped groove, ensuring that the material discharge base plate and the bottom surface of the material discharge bottle are sealed and fitted together and can rotate relative to each other, preventing sample powder from falling into the gap when the two rotate relative to each other. The automatic material feeding and weighing mechanism also includes a sensor switch. The sensor switch, fixed to the transmission mechanism, is located below the positioning plate near the material feeding base plate. The sensor switch detects whether the upper material feeding hole B and the upper material feeding hole A are in a completely misaligned initial state. The positioning plate has a wedge-shaped through hole, and the material feeding bottle can be fixed at the narrow end of the wedge-shaped through hole. The drive clutch mechanism and transmission mechanism are located at the wide end of the wedge-shaped through hole. The outer periphery of the material feeding bottle body has a clamping and positioning surface for gripping and positioning. Specifically, the clamping and positioning surface is a stepped planar structure arranged vertically. The automatic feeding and weighing mechanism can weigh powdery or granular materials with an error range of less than 0.1g.

2. The automatic material feeding and weighing mechanism according to claim 1, characterized in that, The discharge hole A and discharge hole B are triangular, oblong, square, or round.

3. The automatic material feeding and weighing mechanism according to claim 1, characterized in that, The number of clamping and positioning surfaces is two or more.

4. The automatic material feeding and weighing mechanism according to claim 1, characterized in that, The material discharge base plate has a transmission surface around its periphery for receiving external force transmission. A mounting hole is provided at the center of the recessed structure on the material discharge base plate. The mounting hole can cooperate with a blind hole opened at the bottom of the material discharge bottle. The mounting hole and the blind hole can be detachably connected by a mounting shaft. A rotation positioning surface is provided between the mounting hole and the mounting shaft so that the position of the material discharge hole B can be adjusted by rotating the material discharge base plate with external force.

5. The automatic material feeding and weighing mechanism according to claim 1, characterized in that, The agitator includes a lower agitator rod and an upper agitator drive wheel. The agitator rod is fixedly connected to the agitator drive wheel and is arranged in a horizontal direction. The agitator is provided with a feeding wire perpendicular to the material discharge hole A. The feeding wire is a spiral wire structure that can extend and retract into the material discharge hole A.

6. The automatic material feeding and weighing mechanism according to claim 1, characterized in that, The transmission mechanism includes two sets of transmission wheels and a transmission motor. The transmission motor is connected to the transmission wheels, and the transmission wheels are gears. The two sets of transmission wheels and the transmission motor are respectively set on the upper and lower sides of the positioning plate through a U-shaped plate. The upper transmission wheel can drive the stirrer to rotate, and the lower transmission wheel can drive the material discharge bottom plate to move relative to the material discharge bottle.

7. The automatic material feeding and weighing mechanism according to claim 6, characterized in that, The operation method of the automatic material feeding and weighing mechanism includes: Step 1: In the initial state, open the cap of the discharge bottle, add the sample to be tested into different discharge bottles, seal the cap tightly, and place the discharge bottles in their respective positions. Step 2: Transfer and fix the dispensing bottle onto the positioning plate of the automatic dispensing and weighing mechanism; Step 3: Place the crucible at the weighing position below the material discharge hole A and above the weighing device; Step 4: The drive clutch mechanism extends to engage the transmission wheel of the transmission mechanism with the agitator on the discharge bottle and the transmission surface of the discharge bottom plate, and at the same time drives the induction switch to move to the bottom plate of the discharge to detect whether the discharge hole B is in the initial state directly above the induction switch. Step 5: The transmission mechanism drives the stirrer to rotate to continuously stir the sample; and drives the transmission mechanism to rotate the material discharge plate to open the material discharge channel to adjust the opening of the material discharge port. Step 6: The weighing device monitors the weight of the material in real time and adjusts the opening of the feeding port according to the sample mass in the crucible until the material reaches the required sample mass range and then stops feeding. Step 7: The transmission mechanism drives the bottom plate to rotate to close the material discharge channel until the induction switch detects that the material discharge hole B is in the initial state, and then the transmission mechanism stops moving. Step 8: Drive the clutch mechanism to retract, causing the transmission mechanism to engage and disengage with the agitator and the transmission surface of the discharge bottle body.

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