Automatic blanking and weighing device

Abstract

The utility model discloses an automatic blanking and weighing device. The automatic blanking and weighing device comprises a rack, a blanking hopper, a stirring mechanism and a weighing mechanism, a baffle of the material blocking mechanism is movably installed on the material falling hopper, and a telescopic driving assembly is connected with the baffle and used for driving the baffle to move so as to open or close a material falling opening. The stirring mechanism comprises a lifting assembly and a stirring assembly, a sealing cover is arranged on the lower side of a support of the stirring assembly, a stirring driving part is arranged on the support, and a stirring part penetrates through the sealing cover and is connected with the stirring driving part; the lifting assembly is used for driving the stirring assembly to move up and down, so that the stirring part can move into the blanking hopper, and the sealing cover covers a feeding hole of the blanking hopper; and the weighing mechanism is used for placing the material receiving container and weighing the material receiving container and the falling materials in the material receiving container. The feeding port and the discharging port can be closed, contact between a sample and air and dust raising are reduced, materials can be continuously stirred in the discharging process, layering and segregation of the sample are prevented, the size of the discharging port can be adjusted, the discharging speed can be controlled, and the discharging weighing precision can be improved.

Description

Technical Field

[0001] This application relates to the technical field of sampling and weighing devices, and particularly to an automatic blanking and weighing device. Background Art

[0002] When it is necessary to conduct chemical tests on substances such as coal, ore, biomass, and drugs, we usually need to make the samples into powder form and weigh samples within a certain mass range according to the test methods of different samples for chemical tests.

[0003] The existing sampling and weighing device samples through a robotic arm sampling spoon and feeds it into a weighing hopper. The sampling spoon discharges materials through vibration, and this method is prone to material spilling and dust raising. The existing sampling and weighing device has a single sampling point and is prone to stratification and segregation of samples with different particle sizes. Moreover, the sampling efficiency is low and the weighing accuracy is poor.

[0004] Therefore, how to provide an automatic blanking and weighing device with high sampling efficiency, high weighing accuracy, and uniform sample mixing, and which can prevent sample spilling and dust raising, is a technical problem that needs to be urgently solved by those skilled in the art. Utility Model Content

[0005] To solve the above technical problems, the utility model provides an automatic blanking and weighing device, which can close the feed inlet and the blanking outlet, reduce the contact between the sample and air and dust raising, and stir the material during the blanking process to prevent sample stratification and segregation. By adjusting the size of the blanking outlet, the blanking speed is controlled, thereby helping to improve the accuracy of blanking and weighing.

[0006] The technical solution provided by the utility model is as follows:

[0007] An automatic blanking and weighing device, comprising: a frame;

[0008] A blanking hopper provided on the frame, the top of the blanking hopper is provided with a feed inlet, and the bottom of the blanking hopper is provided with a blanking outlet;

[0009] A material blocking mechanism, comprising a baffle and a telescopic driving assembly, the baffle is movably installed on the blanking hopper and fits with the blanking outlet, and the telescopic driving assembly is connected to the baffle for driving the baffle to move relative to the blanking outlet to open or close the size of the blanking outlet;

[0010] The stirring mechanism disposed on the frame includes a lifting component disposed on the frame and a stirring component disposed on the lifting component. The stirring component includes a support, a stirring drive component, and a stirring part. The support is connected to the lifting component. The stirring drive component is disposed on the support. A sealing cover is disposed on the lower side of the support. The stirring part passes through the sealing cover and is connected to the stirring drive component. The lifting component is used to drive the stirring component to move up and down, enabling the stirring part to move into the blanking hopper and the sealing cover to cover the feeding port of the blanking hopper.

[0011] The weighing mechanism is located below the blanking port. A receiving container is placed on the weighing mechanism and weighed.

[0012] Further, a connecting part is provided on the blanking hopper. The connecting part includes a rotating shaft and a sleeve outside the rotating shaft. The sleeve is disposed on the side wall of the blanking hopper. The baffle is mounted on the rotating shaft. One end of the baffle is at the bottom of the blanking port, and the other end of the baffle is connected to the telescopic drive assembly. When the telescopic drive assembly extends, it can drive the baffle to rotate and open the blanking port. When the telescopic drive assembly retracts, it can drive the baffle to rotate and close the blanking port.

[0013] Further, the telescopic drive assembly includes a first drive component, a guide rail, and a connecting plate. A connecting groove is provided on the connecting plate. The end of the baffle is detachably disposed in the connecting groove. The connecting plate is mounted on the guide rail. The first drive component is connected to the connecting plate and used to drive the connecting plate to move along the guide rail.

[0014] Further, the baffle is movably mounted on the blanking hopper along the radial direction of the blanking port. One end of the baffle is at the bottom of the blanking port, and the other end of the baffle is connected to the telescopic drive assembly. When the telescopic drive assembly retracts, it drives the baffle to open the blanking port. When the telescopic drive assembly extends, it causes the baffle to close the blanking port.

[0015] Further, the upper end of the stirring part is detachably connected to the output shaft of the stirring drive component through a connector.

[0016] Further, the automatic blanking weighing device further includes a cleaning mechanism disposed on the frame. The cleaning mechanism is used to clean the blanking hopper and the stirring part.

[0017] Further, the cleaning mechanism includes a cleaning tank, a positioning seat, and a purging assembly. A cover plate is movably arranged on the top of the cleaning tank, and a sewage outlet is arranged at the bottom of the cleaning tank. The positioning seat and the purging assembly are arranged inside the cleaning tank. The positioning seat is used to fix the hopper, and the purging assembly is used to blow high-pressure gas towards the fixed position of the positioning seat.

[0018] Further, a robotic arm is arranged on the frame. A gripper is arranged on the robotic arm. A clamping portion is arranged on the hopper. The gripper can cooperate with the clamping portion to clamp the hopper and move along the robotic arm, so as to transfer the hopper to the positioning seat inside the cleaning tank.

[0019] Further, the cleaning mechanism includes a second driving component, a mounting plate, and a suction pipe. A purging assembly is arranged inside the suction pipe. An outlet is communicated with the side wall of the suction pipe. The mounting plate is movably sleeved on the suction pipe. A fixing portion is fixed on the outer wall of the suction pipe. An elastic member is arranged between the fixing portion and the mounting plate. The mounting plate is connected with the second driving component. The second driving component is used to drive the mounting plate to drive the suction pipe to move, so that the bottom of the suction pipe is aligned with the feed inlet. The lifting assembly can drive the stirring assembly to move so that the sealing cover covers the top of the suction pipe. The purging assembly is used to blow high-pressure gas into the suction pipe. The outlet is used to connect an external negative pressure mechanism.

[0020] Further, the lower part of the material-containing cavity in the hopper is in an inverted conical shape.

[0021] Further, the automatic blanking weighing device further includes an aggregating mechanism. The aggregating mechanism is connected with the hopper. The aggregating mechanism is used to make the materials inside the hopper gather towards the middle through vibration.

[0022] For the automatic blanking weighing device provided by the present utility model, during the blanking process, the sealing cover of its stirring assembly is hermetically covered on the feed inlet of the hopper, which can reduce dust and sample spilling. The stirring part continuously stirs and mixes the materials in the hopper, which can prevent the sample materials from stratifying and separating, the representativeness of the sample is high, the sampling accuracy is improved. At the same time, by stirring the materials in the hopper, the blanking port can be prevented from being blocked, and the blanking is smooth. By controlling the movement of the baffle to open or close the blanking port and adjusting the size of the blanking port, the blanking speed can be controlled, so that the weighing efficiency can be improved. And when the blanking amount is close to the required value, narrowing the blanking port helps to improve the weighing accuracy. Description of the Drawings

[0023] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 The first structural schematic diagram of the automatic blanking weighing device in the embodiment of the present utility model;

[0025] Figure 2 The first structural schematic diagram of the stirring mechanism of the automatic blanking weighing device in the embodiment of the present utility model;

[0026] Figure 3 The first structural schematic diagram of the material blocking mechanism in the embodiment of the present utility model;

[0027] Figure 4 For Figure 3 The sectional view of;

[0028] Figure 5 The first structural schematic diagram of the telescopic driving assembly of the material blocking mechanism in the embodiment of the present utility model;

[0029] Figure 6 The second structural schematic diagram of the material blocking mechanism in the embodiment of the present utility model;

[0030] Figure 7 The second structural schematic diagram of the stirring mechanism of the automatic blanking weighing device in the embodiment of the present utility model;

[0031] Figure 8 The first structural schematic diagram of the cleaning mechanism of the automatic blanking weighing device in the embodiment of the present utility model;

[0032] Figure 9 The second structural schematic diagram of the cleaning mechanism of the automatic blanking weighing device in the embodiment of the present utility model;

[0033] Figure 10 The second structural schematic diagram of the automatic blanking weighing device in the embodiment of the present utility model;

[0034] Figure 11 The third structural schematic diagram of the cleaning mechanism of the automatic blanking weighing device in the embodiment of the present utility model;

[0035] Figure 12 The third structural schematic diagram of the automatic blanking weighing device in the embodiment of the present utility model;

[0036] Figure 13 The structural schematic diagram of the aggregate mechanism in the embodiment of the present utility model.

[0037] Reference numerals: blanking hopper 1, feed inlet 101, blanking outlet 102, sleeve 103, rotating shaft 104, clamping portion 105, baffle mechanism 2, baffle 201, first driving member 202, guide rail 203, connecting plate 204, connecting groove 205, connecting member 206, spring 207, stirring mechanism 3, lifting assembly 301, stirring assembly 302, support 3021, stirring driving member 3022, stirring portion 3023, sealing cover 3024, connector 3025, weighing mechanism 4, cleaning mechanism 5, cleaning tank 501, positioning seat 502, first fixing position 5021, second fixing position 5022, purging nozzle 503, cover plate 504, sewage outlet 505, second driving member 506, mounting plate 507, suction pipe 508, outlet 509, fixing portion 510, elastic member 511, robotic arm 6, gripper 7, first clamping position 701, second clamping position 702, aggregate mechanism 8, fixing seat 801, impact cylinder 802, impact plate 803, translation cylinder 804. Detailed implementation manners

[0038] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the scope of protection of this application.

[0039] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0040] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to this application.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more such features. In the description of this application, "a plurality of" or "several" means two or more, unless otherwise specifically defined.

[0042] It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in the art to understand and read, and are not used to limit the implementation conditions of this application. Therefore, they do not have substantial technical significance. Any modification of the structure, change in the ratio relationship, or adjustment of the size, without affecting the effects that this application can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in this application.

[0043] In the existing sampling and weighing device, during the sample sampling and feeding process, multiple transfers are required, and multiple transfer mechanisms need to be configured, resulting in a complex structure. Moreover, in order to ensure the blanking accuracy, the blanking hole is small, and the blanking hole is prone to blockage and difficult to clean.

[0044] In order to solve the technical problems existing in the prior art, as Figure 1 and Figure 2 shown, this embodiment provides an automatic blanking and weighing device, including: a frame;

[0045] A blanking hopper 1 provided on the frame, the top of the blanking hopper 1 is provided with a feed inlet 101, and the bottom of the blanking hopper 1 is provided with a blanking outlet 102;

[0046] A material blocking mechanism 2, including a baffle 201 and a telescopic driving assembly, the baffle 201 is movably installed on the blanking hopper 1 and fits with the blanking outlet 102, and the telescopic driving assembly is connected to the baffle 201 for driving the baffle 201 to move relative to the blanking outlet 102 to open or close the size of the blanking outlet 102;

[0047] The stirring mechanism 3 arranged on the frame includes a lifting component 301 arranged on the frame and a stirring component 302 arranged on the lifting component 301, the stirring component 302 includes a support 3021, a stirring driving component 3022 and a stirring portion 3023, the support 3021 is connected to the lifting component 301, the stirring driving component 3022 is arranged on the support 3021, a sealing cover 3024 is arranged on the lower side of the support 3021, the stirring portion 3023 is penetrated on the sealing cover 3024 and connected to the stirring driving component 3022, the lifting component 301 is used to drive the stirring component 302 to move up and down, so that the stirring portion 3023 can be moved into the drop hopper 1 and the sealing cover 3024 is covered on the feed port 101 of the drop hopper 1;

[0048] The weighing mechanism 4 is located below the material drop opening 102 , and is used to place a material receiving container and weigh the material receiving container.

[0049] The automatic material discharging and weighing device provided in the present embodiment is mainly used for automatic material discharging and weighing in the process of coal material sampling and testing. The frame is used to install various structures so that they can work together, which is not drawn in the accompanying drawings. The inside of the discharging hopper 1 has a material holding cavity that can accommodate sample materials. The top of the discharging hopper 1 is open to form a feeding port 101. The weighing mechanism 4 can specifically be a weight sensor or other weighing mechanism 4. The weighing mechanism 4 is located directly below the discharging port 102. The material receiving container is preferably a crucible. The material receiving container is placed on the weighing container and is located directly below the discharging port 102. The stirring assembly 302 is located directly above the discharging hopper 1. The stirring part 3023 specifically includes a stirring shaft. The lower end of the stirring shaft is provided with a stirring end. The stirring end is provided with a stirring wire or a stirring blade to better stir the material. The stirring shaft is passed through the middle of the sealing cover 3024, and the upper end of the stirring shaft is connected to the stirring drive component 30 through a connector 3025. 22 is a detachable transmission connection. The lifting component 301 can specifically adopt a cylinder or a linear motor to drive the support 3021 to move downward, so that the stirring part 3023 enters the drop hopper 1 and the sealing cover 3024 is covered on the feed port 101. The sealing cover 3024 is in sealing contact with the feed port 101. The stirring drive component 3022 drives the stirring shaft to rotate for stirring. The telescopic drive component drives the baffle 201 to move relative to the drop port 102, so that the drop port 102 is at a suitable size. The material falls into the receiving container from the drop port 102. The weighing mechanism 4 weighs the receiving container and the material therein in real time. When the drop amount is close to the requirement, the telescopic drive component drives the baffle 201 to move to adjust the size of the drop port 102 and reduce the rotation speed of the stirring shaft. When the drop amount reaches the required range, the stirring shaft stops rotating, and the telescopic drive component drives to close the baffle 201 to stop the drop.

[0050] The automatic blanking and weighing device provided in this embodiment has a sealing cover 3024 of the stirring assembly 302 covering the feeding port 101 of the blanking hopper 1, which reduces the change in the state of the material caused by contact with air and is beneficial to ensuring the properties of the sample material. During the blanking process, it can reduce dust and sample spillage; the stirring part 3023 continuously stirs and mixes the material in the blanking hopper 1, which can prevent the sample material from stratifying and segregating, and the representativeness of the sample is high, improving the sampling accuracy. At the same time, by stirring the material in the blanking hopper 1, it can prevent the material from "bridging" and blocking the blanking port 102 near the blanking port 102, making the blanking smooth; the blanking port 102 is relatively large and easy to clean. By controlling the movement of the baffle 201 to open or close the blanking port 102 and adjust the size of the blanking port 102, the blanking speed can be controlled, thereby improving the weighing efficiency. And when the blanking amount is close to the required value, narrowing the blanking port 102 helps to improve the weighing accuracy.

[0051] Preferably, the stirring part 3023 is fixedly installed on the sealing cover 3024, the sealing cover 3024 is detachably connected to the support 3021, and the stirring part 3023 is detachably connected to the stirring drive component; or the stirring part 3023 is fixedly installed on the sealing cover 3024, the stirring part 3023 is detachably connected to the stirring drive component. By disassembling the sealing cover 3024 and the stirring part 3023, the stirring part 3023 and the sealing cover 3024 can be transferred as a whole, and the stirring part 3023 and the sealing cover 3024 can be cleaned.

[0052] Preferably, as Figure 4 shown, the lower part of the material-containing cavity in the blanking hopper 1 is in an inverted cone shape. The material-containing cavity inside the blanking hopper 1 is cylindrical, with the upper part open as the feeding port 101, the lower part of the material-containing cavity is in an inverted cone shape, and the bottom is the blanking port 102, which is convenient for the material to gather towards the middle blanking port 102, so that all the material in the blanking hopper 1 can fall from the blanking port 102. The feeding port 101 is relatively large, which is convenient for adding material to the blanking hopper 1 to achieve continuous blanking. The blanking port 102 is relatively small, which is convenient for controlling the blanking speed and improving the blanking accuracy.

[0053] The first implementation manner of the material blocking mechanism 2 provided in this embodiment is as Figure 3 and Figure 4 shown. A connecting part is provided on the blanking hopper 1. The connecting part includes a rotating shaft 104 and a sleeve 103 outside the rotating shaft 104. The sleeve 103 is arranged on the side wall of the blanking hopper 1. The baffle 201 is installed on the rotating shaft. One end of the baffle 201 is at the bottom of the blanking port 102, and the other end of the baffle 201 is connected to the telescopic drive assembly. When the telescopic drive assembly extends, it can drive the baffle 201 to rotate and open the blanking port 102. When the telescopic drive assembly retracts, it can drive the baffle 201 to rotate and close the blanking port 102.

[0054] Specifically, the blanking hopper 1 is generally cylindrical. The baffle 201 is arranged radially at the blanking port 102 of the blanking hopper 1. One end of the baffle 201 is hermetically blocked at the bottom of the blanking port 102, and the other end is connected to the telescopic drive assembly. The rotating shaft 104 and the sleeve 103 are arranged parallel to the axis of the blanking hopper 1. Preferably, a spring 207 is provided on the rotating shaft 104. One end of the spring 207 is fixed to the sleeve 103, and the other end of the spring 207 is fixed to the baffle 201. By providing the spring, it can be ensured that the blanking port is always in a closed state to prevent the blanking port from being opened abnormally. There are two ways to install the rotating shaft 104 in the sleeve 103: The first way is that the rotating shaft 104 is rotatably installed in the sleeve 103, and the lower part of the rotating shaft 104 is fixedly connected to the baffle 201. Of course, the rotating shaft 104 can be integrally formed with the baffle 201. The spring 207 is specifically a torsion spring. The spring 207 is sleeved on the rotating shaft 104. The upper end of the spring 207 is fixed to the inner wall of the sleeve 103, and the lower end of the spring 207 is fixed to the baffle 201. When the telescopic drive assembly extends to drive the baffle 201, the baffle 201 drives the rotating shaft 104 to rotate, and at the same time twists the spring 207. The baffle 201 opens the blanking port 102. When the telescopic drive assembly retracts, it drives the baffle 201 and the rotating shaft 104 to rotate in the reverse direction to close the blanking port 102, and at the same time the spring 207 resets. The second way is that the rotating shaft 104 is fixedly installed in the sleeve 103. Of course, the rotating shaft 104 can also be integrally formed with the sleeve 103. The lower part of the rotating shaft 104 is rotatably installed in the mounting hole of the baffle 201. The spring 207 is specifically a torsion spring. The spring 207 is sleeved on the rotating shaft 104. The upper end of the spring 207 is fixed to the inner wall of the sleeve 103, and the lower end of the spring 207 is fixed to the baffle 201. When the telescopic drive assembly extends to drive the baffle 201, the baffle 201 rotates relative to the rotating shaft 104 to open the blanking port 102, and at the same time twists the spring 207. When the telescopic drive assembly retracts, it drives the baffle 201 to rotate in the reverse direction to close the blanking port 102, and at the same time the spring 207 resets. When the telescopic drive assembly is in the initial state, the spring 207 always keeps the baffle 201 in the position of blocking the blanking port 102, so that the baffle 201 will not be easily opened and cause material leakage. By controlling the extension distance of the telescopic drive assembly, the size of the blanking port 102 opened by the baffle 201 can be controlled. The bottom of the blanking hopper 1 is closed, and it can be directly clamped and transferred without the need to cooperate with other structures for operations such as flipping. The sample will not spill out during the transfer process.

[0055] In this embodiment, as Figure 5As shown in the figure, the telescopic driving assembly includes a first driving member 202, a guide rail 203 and a connecting plate 204. A connecting groove 205 is provided on the connecting plate 204. The end of the baffle 201 is detachably arranged in the connecting groove 205. The connecting plate 204 is installed on the guide rail 203. The first driving member 202 is connected to the connecting plate 204 and is used to drive the connecting plate 204 to move along the guide rail 203. The first driving member 202 is a linear driving member, specifically it can be a linear motor, a cylinder or an electric cylinder. The guide rail 203 is arranged perpendicular to the baffle 201. The connecting plate 204 is slidably installed on the guide rail 203. The connecting groove 205 is arranged in the direction perpendicular to the guide rail 203. In order to facilitate the installation of one end of the baffle 201 in the connecting groove 205, the baffle 201 is Z-shaped. A connecting member 206 is provided at the end of the baffle 201 away from the material dropping port 102. The connecting member 206 is detachably and movably installed in the connecting groove 205. The first driving member 202 extends to drive the connecting plate 204 to move along the guide rail 203, driving the connecting plate 204 to rotate and at the same time the connecting member 206 to move along the connecting groove 205.

[0056] The second embodiment of the material blocking mechanism 2 is also provided in this embodiment. As Figure 6 shown in the figure, the baffle 201 is movably installed along the radial direction of the material dropping port 102 on the material dropping hopper 1. One end of the baffle 201 is located at the bottom of the material dropping port 102. The other end of the baffle 201 is connected to the telescopic driving assembly. The telescopic driving assembly retracts to drive the baffle 201 to open the material dropping port 102. The telescopic driving assembly extends to make the baffle 201 close the material dropping port 102. The material dropping port is circular. In the initial state, one end of the baffle 201 blocks the bottom of the material dropping port 102. The telescopic driving assembly retracts to drive the baffle 201 to move radially away from the material dropping port 102, thereby gradually opening the material dropping port 102. Preferably, a limiting step is provided at the end of the baffle 201 close to the material dropping port 102. A spring is sleeved on the baffle 201, and the spring is located between the step and the inner wall of the material dropping hopper 1. In the initial state, due to the elastic force of the spring, it is not easy for the baffle 201 to move radially, so it is not easy for the baffle 201 to be opened and cause material leakage. The telescopic driving assembly retracts, pulling the baffle 201 away from the material dropping port 102 and at the same time compressing the spring. The telescopic driving assembly extends to drive the baffle 201 close to the material dropping port 102, and at the same time the spring resets, thereby realizing the baffle 201 to gradually open or close the material dropping port 102.

[0057] In order to realize the detachable connection between the stirring part and the stirring driving member, preferably in this embodiment, as Figure 7As shown, the upper end of the stirring part is detachably connected to the output shaft of the stirring drive part 3022 through a connector 3025. Specifically, the connector 3025 includes a first quick connector and a second quick connector. The first quick connector is fixedly installed on the stirring part 3023, and the second quick connector is fixedly installed on the output shaft of the stirring drive part 3022. The first quick connector and the second quick connector can be quickly connected and fixed in cooperation.

[0058] Preferably in this embodiment, as Figure 1 and Figure 8 shown, the automatic blanking weighing device further includes a cleaning mechanism 5 provided on the frame. The cleaning mechanism 5 is used to clean the blanking hopper 1 and the stirring part 3023. The blanking hopper 1 and the stirring part 3023 can be covered and separated. After blanking is completed, the blanking hopper 1 and the stirring part 3023 are separated, and the blanking hopper 1 and the stirring part 3023 are respectively transferred to the cleaning mechanism 5 for cleaning, which can avoid cross-contamination when different samples are blanked.

[0059] The first implementation manner of the cleaning mechanism 5 is provided in this embodiment. As Figure 8 shown, the cleaning mechanism 5 includes a cleaning tank 501, a positioning seat 502 and a purging assembly. A cover plate 504 is movably arranged on the top of the cleaning tank 501. A sewage outlet 505 is arranged at the bottom of the cleaning tank 501. The positioning seat 502 and the purging assembly are arranged inside the cleaning tank 501. The positioning seat 502 is used to fix the blanking hopper 1, and the purging assembly is used to blow high-pressure gas towards the fixed position of the positioning seat 502.

[0060] Specifically, the cleaning tank 501 is installed on the frame. The positioning seat 502 is located in the middle of the cleaning tank 501 and can move up and down. A fixed position is provided on the positioning seat 502. The blanking hopper 1 is placed and fixed on the fixed position of the positioning seat 502 so that the blanking hopper 1 is in a vertical state. A position for fixing the stirring part 3023 is also provided on the positioning seat 502. The purging assembly includes a purging nozzle 503 and an air pipe. The air pipe is installed on the cover plate 504. The purging nozzle 503 is installed at one end of the air pipe. The other end of the air pipe is connected to an external high-pressure air source. When the cover plate 504 covers the top of the cleaning tank 501, the purging nozzle 503 faces the fixed position of the positioning seat 502. The working process is as follows: move the cover plate 504 to open the top of the cleaning tank, the positioning seat 502 rises, so as to transfer the blanking hopper 1 to the fixed position of the positioning seat 502. The blanking hopper 1 is vertically placed on the fixed position, and the stirring part 3023 is fixedly placed on the positioning seat 502. Then the positioning seat 502 descends, move the cover plate 504 to close the top of the cleaning tank 501, and the purging nozzle 503 is directly above the blanking hopper 1. Open the air source to clean the blanking hopper 1. The sample residue is discharged through the blanking port 102 and discharged from the cleaning tank 501 through the sewage outlet 505 at the bottom of the cleaning tank, and the sample residue can be collected at the sewage outlet 505.

[0061] Preferably, as Figure 9 shown, the positioning seat 502 is respectively provided with a first fixing position 5021 and a second fixing position 5022. The first fixing position 5021 is used to fix the blanking hopper 1, and the second fixing position 5022 is used to fix the stirring part 3023. The positioning seat 502 can fixedly place the blanking hopper 1 and the stirring part 3023. A purging port is arranged on the lower side wall of the second fixing position 5022 for blowing high-pressure gas to the stirring part 3023 for cleaning.

[0062] In order to transfer the blanking hopper 1, in this embodiment, as Figure 1 shown, a robotic arm 6 is arranged on the frame. A jaw 7 is arranged on the robotic arm 6. A clamping part 105 is arranged on the blanking hopper 1. The jaw 7 can cooperate with the clamping part 105 to clamp the blanking hopper 1 and move along the robotic arm 6, so that the blanking hopper 1 is transferred to the positioning seat 502 in the cleaning tank 501. The clamping part 105 is arranged along the circumferential direction of the blanking hopper 1. An installation part is arranged on the clamping part 105 on one side of the blanking hopper 1. The sleeve 103 is fixedly installed on the installation part. During operation, the jaw 7 moves along the robotic arm 6 to the blanking position, the jaw 7 opens and clamps the lower side of the clamping part 105 of the blanking hopper 1, and closes to make the clamping part 105 stuck on the jaw 7, and then moves along the robotic arm 6 to the cleaning mechanism, so that the blanking hopper 1 is transferred to the fixing position of the positioning seat 502. The jaw 7 opens and disengages from the blanking hopper 1. The positioning seat 502 drives the blanking hopper 1 to descend into the cleaning tank, and the jaw 7 moves along the robotic arm 6 to leave the position of the cleaning mechanism. Preferably, as Figure 10 shown, the jaw 7 is provided with a first clamping position 701 and a second clamping position 702. The opening of the first clamping position 701 is larger than that of the second clamping position 702. The first clamping position 701 is used to clamp the blanking hopper 1, and the second clamping position 702 is used to clamp the stirring part 3023. The blanking hopper 1 and the stirring part 3023 can be sequentially clamped and transferred by the jaw 7, and the blanking hopper 1 and the stirring part 3023 are sequentially transferred to the positioning seat 502. The jaw 7 and the robotic arm 6 can adopt the prior art, and their specific structures are not described herein again.

[0063] This embodiment also provides a second implementation manner of the cleaning mechanism 5, as Figure 11 and 12As shown, the cleaning mechanism 5 includes a second driving component 506, a mounting plate 507, and a material suction pipe 508. A purging assembly is provided inside the material suction pipe 508. An outlet 509 is communicated with the side wall of the material suction pipe 508. The mounting plate 507 is movably sleeved on the material suction pipe 508. A fixing part 510 is fixed on the outer wall of the material suction pipe 508. An elastic member 511 is arranged between the fixing part 510 and the mounting plate 507. The mounting plate 507 is connected to the second driving component 506. The second driving component 506 is used to drive the mounting plate 507 to drive the material suction pipe 508 to move, so that the bottom of the material suction pipe 508 is aligned with the feed inlet 101. The lifting assembly 301 can drive the stirring assembly 302 to move so that the sealing cover 3024 covers the top of the material suction pipe 508. The purging assembly is used to blow high-pressure gas into the material suction pipe 508. The outlet 509 is used to connect an external negative pressure mechanism.

[0064] Specifically, the second driving component 506 is a linear driving component, which can specifically be a linear motor, a cylinder or an electric cylinder. The second driving component 506 is installed on the frame. The mounting plate 507 is fixedly connected to the driving end of the second driving component 506, and the mounting plate 507 is in a horizontal state. An installation opening is provided in the middle of the fixing plate. The material suction pipe 508 is movably installed in the installation opening. The fixing part 510 on the outer wall of the material suction pipe 508 can specifically be a fixing block. The fixing part 510 is connected to the mounting plate 507 through the elastic member 511. The elastic member 511 is preferably a spring. The elastic member 511 is parallel to the axial direction of the material suction pipe 508, that is, the elastic member 511 is perpendicular to the mounting plate 507. The elastic member 511 can be compressed to make the material suction pipe 508 move relative to the mounting plate 507. When the blanking hopper 1 needs to be cleaned, the second driving component 506 drives the mounting plate 507 to drive the material suction pipe 508 to move above the blanking hopper 1, and the material suction pipe 508, the blanking hopper 1 and the stirring part 3023 are on the same straight line. The lifting assembly 301 drives the stirring assembly 302 to descend, so that the stirring part 3023 extends into the material suction pipe 508, and the sealing cover 3024 covers the top of the material suction pipe 508. And the stirring assembly 302 continues to move downward, pressing down the material suction pipe 508, and at the same time compressing the spring. The lower end of the material suction pipe 508 is sealed with the feed hopper of the blanking hopper 1. The purging nozzle 503 of the purging assembly is communicated with an external high-pressure gas source for blowing and cleaning. The high-pressure gas takes the residual samples in the blanking hopper 1 and the stirring part 3023 out from the outlet 509. Such a cleaning structure and cleaning process do not require the transfer of the blanking hopper 1 and the stirring part 3023. The cleaning operation is simple and convenient, and the structure is simple.

[0065] Preferably in this embodiment, as Figure 1 and Figure 12As shown, the automatic blanking weighing device further includes an aggregate mechanism 8. The aggregate mechanism 8 is connected to the blanking hopper 1, and the aggregate mechanism 8 is used to make the materials inside the blanking hopper 1 gather towards the middle through vibration. Specifically, the aggregate mechanism 8 includes a fixed seat 801 and a vibrator. The fixed seat 801 is installed on the frame or the installation platform. The fixed seat 801 is located on one side of the blanking hopper 1. The vibrator is installed on the fixed seat 801 and contacts the blanking hopper 1. The vibrator can impact the blanking hopper 1 to make the blanking hopper 1 vibrate. When the blanking hopper 1 is not discharging materials, the vibrator vibrates or impacts the blanking hopper 1 to make the materials at the inner wall of the blanking hopper 1 gather towards the middle blanking area of the blanking hopper 1, so that the materials in the blanking hopper 1 can completely fall from the blanking port 102. More specifically, as Figure 13 shown, the vibrator includes an impact cylinder 802 and an impact plate 803 connected to the impact cylinder 802. The impact plate 803 contacts the side wall of the blanking hopper 1. The impact cylinder 802 makes the blanking hopper 1 vibrate by impacting the impact plate 803 back and forth. In order to adjust the distance between the vibrator and the blanking hopper 1, the aggregate mechanism further includes a translation cylinder 804. The fixed seat 801 is connected to the translation cylinder 804. The telescopic movement of the translation cylinder 804 can drive the fixed seat 801 to move relative to the blanking hopper 1, so as to adjust the distance between the impact plate 803 and the blanking hopper 1.

[0066] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An automatic blanking weighing device, characterized in that: include: frame; A material dropping hopper is arranged on the frame, wherein a feeding port is arranged at the top of the material dropping hopper and a material dropping port is arranged at the bottom of the material dropping hopper; The material blocking mechanism comprises a baffle and a telescopic driving assembly, wherein the baffle is movably mounted on the material dropping hopper and fits the material dropping opening, and the telescopic driving assembly is connected to the baffle and is used to drive the baffle to move relative to the material dropping opening to open or close the size of the material dropping opening; The stirring mechanism arranged on the frame includes a lifting assembly arranged on the frame and a stirring assembly arranged on the lifting assembly, the stirring assembly includes a support, a stirring driving component and a stirring part, the support is connected to the lifting assembly, the stirring driving component is arranged on the support, a sealing cover is arranged on the lower side of the support, the stirring part is penetrated on the sealing cover and connected to the stirring driving component, the lifting assembly is used to drive the stirring assembly to move up and down, so that the stirring part can be moved into the drop hopper and the sealing cover is arranged on the feeding port of the drop hopper; A weighing mechanism is located below the material drop opening, and the weighing mechanism is used to place a material receiving container and weigh the material receiving container.

2. The automatic blanking weighing device according to claim 1, characterized in that: The drop hopper is provided with a connecting portion, which includes a rotating shaft and a sleeve on the outside of the rotating shaft, the sleeve is provided on the side wall of the drop hopper, the baffle is installed on the rotating shaft, one end of the baffle is located at the bottom of the drop port, and the other end of the baffle is connected to the telescopic driving assembly, the telescopic driving assembly can be extended to drive the baffle to rotate and open the drop port, and the telescopic driving assembly can be retracted to drive the baffle to rotate and close the drop port.

3. The automatic blanking weighing device according to claim 2, characterized in that: The telescopic drive assembly includes a first drive component, a guide rail and a connecting plate, the connecting plate is provided with a connecting groove, the end of the baffle is detachably arranged in the connecting groove, the connecting plate is installed on the guide rail, and the first drive component is connected to the connecting plate to drive the connecting plate to move along the guide rail.

4. The automatic blanking weighing device according to claim 1, characterized in that: The baffle is movably installed on the material dropping hopper along the radial direction of the material dropping port, one end of the baffle is located at the bottom of the material dropping port, and the other end of the baffle is connected to the telescopic drive assembly. The telescopic drive assembly retracts to drive the baffle to open the material dropping port, and the telescopic drive assembly extends to cause the baffle to close the material dropping port.

5. The automatic blanking weighing device according to claim 1, characterized in that: The upper end of the stirring part is detachably connected to the output shaft of the stirring driving component through a connector.

6. The automatic blanking weighing device according to any one of claims 1 to 5, characterized in that: It also includes a cleaning mechanism arranged on the frame, and the cleaning mechanism is used for cleaning the drop hopper and the stirring part.

7. The automatic blanking weighing device according to claim 6, characterized in that: The cleaning mechanism includes a cleaning tank, a positioning seat and a purge assembly. A cover plate is movably provided on the top of the cleaning tank, a sewage outlet is provided at the bottom of the cleaning tank, the positioning seat and the purge assembly are arranged inside the cleaning tank, the positioning seat is used to fix the drop hopper, and the purge assembly is used to blow high-pressure gas to the fixed position of the positioning seat.

8. The automatic blanking weighing device according to claim 7, characterized in that: The frame is provided with a mechanical arm, the mechanical arm is provided with a clamping claw, the drop hopper is provided with a clamping portion, the clamping claw can cooperate with the clamping portion to clamp the drop hopper and move along the mechanical arm, so that the drop hopper is transferred to the positioning seat in the cleaning tank.

9. The automatic blanking weighing device according to claim 6, characterized in that: The cleaning mechanism includes a second driving component, a mounting plate, and a suction pipe. A purge assembly is arranged in the suction pipe. The side wall of the suction pipe is connected to an outlet. The mounting plate is movably mounted on the suction pipe. A fixing portion is fixed on the outer wall of the suction pipe. An elastic member is arranged between the fixing portion and the mounting plate. The mounting plate is connected to the second driving component. The second driving component is used to drive the mounting plate to drive the suction pipe to move so that the bottom of the suction pipe is aligned with the feed inlet. The lifting assembly can drive the stirring assembly to move so that the sealing cover covers the top of the suction pipe. The purge assembly is used to blow high-pressure gas into the suction pipe. The outlet is used to connect an external negative pressure mechanism.

10. The automatic blanking weighing device according to claim 1, characterized in that: The lower part of the material containing cavity in the dropping hopper is in an inverted cone shape.

11. The automatic blanking weighing device according to claim 10, characterized in that: It also includes a material collecting mechanism, which is connected to the material dropping hopper and is used to gather the materials inside the material dropping hopper to the middle through vibration.

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