Sample material discharge method and device, detection system

Abstract

The present invention relates to the field of metallurgical equipment technology, and in particular to a sample material discharge method and device, and a detection system. The sample material discharge device includes a feed port and a discharge port, and the device also includes: at least one gas-solid separation mechanism connected between the feed port and the discharge port; a negative pressure generating mechanism connected to the gas-solid separation mechanism, used to form a negative pressure environment inside the gas-solid separation mechanism; a sealing cover, provided between the gas-solid separation mechanism and the discharge port, the sealing cover being in a closed state under the action of a negative pressure environment and isolating the gas-solid separation mechanism from the discharge port, and being in an open state and connecting the gas-solid separation mechanism to the discharge port when the negative pressure environment disappears. The present invention can improve the operating efficiency of the device, simplify the maintenance and repair process of the device, and thus improve the production and sample detection efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of metallurgical equipment, and in particular to a sample material discharge method and device, and a detection system. Background Art

[0002] Currently, raw material analysis and testing in the steel and metallurgical industry involves regularly collecting raw material samples manually or using sampling devices. These samples are then manually transported to the laboratory for testing. After testing, the waste is manually dumped and accumulated in a waste bin, where it is subsequently manually handled and processed. This entire raw material analysis and testing process is time-consuming and labor-intensive, typically taking two to three minutes to collect a single piece of data for testing. This manual handling is time-consuming and labor-intensive, and is detrimental to automated steel production.

[0003] With technological advancements, modern steel production workshops are increasingly implementing online, real-time automated testing equipment. This testing data is used to provide real-time feedback and adjust production parameters. Material testing involves the discharge of sample materials, and the volume of material tested in real time is relatively large, making manual sample discharge impossible. Therefore, the key to achieving online testing and improving efficiency is to quickly and efficiently automatically discharge and collect the tested sample materials.

[0004] In non-metallurgical industries, conveying devices that transport particulate materials via airflow exist. These conveying devices can be automated through certain detection and circuit control mechanisms. However, existing conveying devices also present certain challenges. For example, material particles easily adhere to filters, and the smaller the particle size of the discharged material, the more likely they are to clog the conveying device. Furthermore, during filter cleaning, airflow can become obstructed in devices that have been operating for extended periods, impacting normal operation and requiring extended downtime for filter disassembly and replacement.

[0005] It can be seen that the existing material discharging device has the problems of low device operation efficiency and complicated maintenance and repair process, which seriously affects the production and sample detection efficiency. Summary of the Invention

[0006] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0007] To this end, the present invention proposes a sample material discharge device to solve the problems of low device operation efficiency and complicated maintenance and repair processes in existing material discharge devices, which seriously affect production and sample detection efficiency.

[0008] The present invention also provides a detection system.

[0009] The present invention also provides a sample material discharge method.

[0010] A sample material discharge device according to an embodiment of the first aspect of the present invention includes a feed port and a discharge port, and further includes:

[0011] At least one gas-solid separation mechanism connected between the feed port and the discharge port;

[0012] a negative pressure generating mechanism, connected to the gas-solid separation mechanism, for forming a negative pressure environment inside the gas-solid separation mechanism;

[0013] A sealing cover is provided between the gas-solid separation mechanism and the discharge port. The sealing cover is used to be in a closed state and to separate the gas-solid separation mechanism and the discharge port under the action of the negative pressure environment, and to be in an open state and to connect the gas-solid separation mechanism and the discharge port when the negative pressure environment disappears.

[0014] According to one embodiment of the present invention, the gas-solid separation mechanism includes a separation chamber, the top of the separation chamber is respectively connected to the feed port and the negative pressure generating mechanism, the bottom of the separation chamber is connected to the discharge port, and the sealing cover is movably connected to the bottom of the separation chamber and is located between the separation chamber and the discharge port; the side wall of the separation chamber gradually shrinks from the top to the bottom, so that a spiral airflow is formed inside the separation chamber in a negative pressure environment.

[0015] According to one embodiment of the present invention, the gas-solid separation mechanism further includes an air inlet, a first opening and a second opening, the air inlet and the second opening are respectively arranged at the top and bottom of the separation chamber along the axial direction of the separation chamber, the first opening is constructed at the top of the separation chamber and is located next to the air inlet, the air inlet is connected to the negative pressure generating mechanism, the first opening is connected to the feed port, and the second opening is connected to the discharge port; the sealing cover is pivotally connected to the second opening via a rotating shaft, and a push rod mechanism is provided at the bottom of the sealing cover, the protruding end of the push rod mechanism is arranged toward the bottom of the sealing cover, and the protruding end of the push rod mechanism can push the sealing cover to close at the second opening in the extended state.

[0016] According to one embodiment of the present invention, it further includes a feed pipe and a guide pipe, the feed pipe is connected between the gas-solid separation mechanism and the feed port, and the guide pipe is connected to the feed pipe through the feed port; the inner diameter of the guide pipe is smaller than the inner diameter of the feed pipe.

[0017] According to one embodiment of the present invention, one end of the material guiding tube is connected to the material feed port, and the other end of the material guiding tube is provided with a suction nozzle, and the suction nozzle is used to suck the sample material into the material guiding tube.

[0018] According to one embodiment of the present invention, a dust removal filter is further included, and the dust removal filter is connected to the negative pressure generating mechanism.

[0019] According to one embodiment of the present invention, a dust bag is further included, and the dust bag is sleeved on the discharge port.

[0020] According to one embodiment of the present invention, the number of the gas-solid separation mechanisms is two or more, and the gas-solid separation mechanisms are connected in parallel or in series between the feed port and the discharge port.

[0021] According to an embodiment of the second aspect of the present invention, a detection system includes a first conveying mechanism, a second conveying mechanism and the sample material discharge device as described above, wherein the feed port of the sample material discharge device is connected to the first conveying mechanism, and the discharge port of the sample material discharge device is connected to the second conveying mechanism.

[0022] A sample material discharge method according to an embodiment of the third aspect of the present invention is performed by the sample material discharge device as described above, or by the detection system as described above;

[0023] The sample material discharge method comprises:

[0024] Driving the negative pressure generating mechanism to operate so as to form a negative pressure environment inside the gas-solid separation mechanism, and the sealing cover closes under the action of the negative pressure environment to isolate the gas-solid separation mechanism from the discharge port;

[0025] The negative pressure generating mechanism is driven to stop, so that the sealing cover is opened and the gas-solid separation mechanism is connected with the discharge port.

[0026] The above one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

[0027] A sample material discharge device according to an embodiment of the present invention includes a feed port and a discharge port, and the device also includes: at least one gas-solid separation mechanism connected between the feed port and the discharge port; a negative pressure generating mechanism connected to the gas-solid separation mechanism, for forming a negative pressure environment inside the gas-solid separation mechanism; a sealing cover arranged between the gas-solid separation mechanism and the discharge port, the sealing cover being in a closed state in a negative pressure environment and isolating the gas-solid separation mechanism from the discharge port, and connecting the gas-solid separation mechanism with the discharge port in an open state. In other words, the device can achieve gas-solid separation of the sample by the gas-solid separation mechanism by setting a negative pressure environment inside the gas-solid separation mechanism, and can also drive the sealing cover to automatically close in a negative pressure environment and automatically open after the negative pressure environment disappears. Compared to existing technologies, this device can control the negative pressure environment within the gas-solid separation mechanism, thereby automatically switching the sealing cover between open and closed states. It can also disconnect the gas-solid separation mechanism from the discharge port when the sample material is drawn into the gas-solid separation mechanism by the negative pressure, allowing the sample material to remain within the gas-solid separation mechanism for a sufficient period of time to experience sufficient gas-solid separation. This shows that compared to existing technologies, this device can improve operating efficiency and simplify maintenance and repair procedures, thereby increasing production and sample testing efficiency.

[0028] A detection system according to an embodiment of the present invention includes a first conveying mechanism, a second conveying mechanism, and the sample material discharge device described above. The sample material discharge device has an inlet connected to the first conveying mechanism, and a discharge port connected to the second conveying mechanism. The provision of the sample material discharge device provides the detection system with all the advantages of the aforementioned sample material discharge device, which will not be further described here.

[0029] A sample material discharge method according to an embodiment of the present invention is performed by the sample material discharge device described above, or by the detection system described above; the sample material discharge method includes: driving a negative pressure generating mechanism to operate so that a negative pressure environment is formed inside a gas-solid separation mechanism, and the sealing cover closes under the action of the negative pressure environment and isolates the gas-solid separation mechanism from the discharge port; and driving the negative pressure generating mechanism to stop so that the sealing cover opens and connects the gas-solid separation mechanism with the discharge port. Compared with the prior art, this method can control the opening and closing of the negative pressure environment inside the gas-solid separation mechanism, thereby automatically switching the sealing cover between an open state and a closed state, and ensuring that the gas-solid separation mechanism and the discharge port are disconnected when the sample material is sucked into the gas-solid separation mechanism under the action of the negative pressure, so that the sample material can stay inside the gas-solid separation mechanism for a sufficient time and receive sufficient gas-solid separation. In addition, the entire device can switch sequentially between the three processes of material collection, separation, and discharge by cyclically opening and closing the negative pressure environment. It can be seen that compared with the existing technology, this method can improve the operating efficiency of the device and the system, simplify the maintenance and repair process of the device, and improve the production and sample detection efficiency.

[0030] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 Schematic diagram of the working state of the sample material discharge device in the detection system according to an embodiment of the present invention;

[0033] Figure 2 This is a front view of a sample material discharge device according to an embodiment of the present invention;

[0034] Figure 3 It is a side view of a sample material discharge device according to an embodiment of the present invention.

[0035] Reference numerals:

[0036] 1: First conveying mechanism; 2: Suction nozzle; 3: Material guide tube;

[0037] 4: Sample material discharge device (referred to as "device" for short); 401: Gas-solid separation mechanism; 402: Negative pressure generating mechanism; 403: Dust removal filter; 404: Discharge pipe; 405: Push rod mechanism; 406: Sealing cover; 407: Fixing bracket; 408: Dust bag; 409: Feed pipe;

[0038] 5: Support frame; 6: Second conveying mechanism; 7: Discharge of materials. DETAILED DESCRIPTION

[0039] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0040] like Figures 1 to 3 As shown, an embodiment of the present invention provides a sample material discharge device 4 (referred to as the "device" in this embodiment of the present invention). This device 4 can improve the operating efficiency of the device 4 and simplify the maintenance and repair process of the device 4, thereby improving production and sample testing efficiency. Based on this device 4, the present invention also provides a detection system (referred to as the "system" in this embodiment of the present invention) and a sample material discharge method (referred to as the "method" in this embodiment of the present invention).

[0041] Specifically, such as Figure 1 As shown, the device 4 includes a feed inlet and a discharge port. The feed inlet can be connected to a discharge station located outside the sample material discharge device 4, so that the sample material located at the discharge station can be fed into the device 4 through the feed inlet. The discharge port is used to discharge the test sample from the device 4 after gas-solid separation.

[0042] like Figure 1 and Figure 2 As shown, the device 4 further includes at least one gas-solid separation mechanism 401, a negative pressure generating mechanism 402, and a sealing cover 406. The gas-solid separation mechanism 401 is connected between the feed inlet and the discharge outlet and is used to perform gas-solid separation on the sample material. The negative pressure generating mechanism 402 is in communication with the gas-solid separation mechanism 401 and is used to create a negative pressure environment within the gas-solid separation mechanism 401. The negative pressure environment within the gas-solid separation mechanism 401 can generate a strong airflow through the feed inlet, thereby drawing the sample material into the gas-solid separation mechanism 401 through the feed inlet under the influence of the strong airflow. Since the sample material that has undergone the testing stage typically contains particulate dust, and the strong airflow can cause a large amount of dust particles to be mixed into the airflow, the gas-solid separation mechanism 401 can perform gas-solid separation on the sample material, thereby preventing dust mixed in the airflow from hindering the operation of the device 4 and improving the safety of the device 4.

[0043] To improve the operating efficiency and safety of device 4, an openable and closable sealing cover 406 is provided between the gas-solid separation mechanism 401 and the discharge port of device 4. Sealing cover 406 is configured to remain closed and isolate gas-solid separation mechanism 401 from the discharge port when under a negative pressure, and to remain open and connect gas-solid separation mechanism 401 to the discharge port when the negative pressure disappears. In other words, device 4 is able to achieve gas-solid separation of the sample by gas-solid separation mechanism 401 by establishing a negative pressure environment within gas-solid separation mechanism 401. It is also capable of driving sealing cover 406 to automatically close in a negative pressure environment and automatically open after the negative pressure disappears. Because sealing cover 406 can seal and isolate gas-solid separation mechanism 401 from the discharge port in the closed state, it also prevents the negative pressure environment within gas-solid separation mechanism 401 from affecting the discharge port of device 4, which could cause the discharged material 7 discharged from device 4 to be sucked back into gas-solid separation mechanism 401 by the negative pressure, thereby affecting the normal operation and safety of device 4.

[0044] It can be seen that the device 4 can control the negative pressure environment inside the gas-solid separation mechanism 401, so that the sealing cover 406 can automatically switch between the open state and the closed state, and can ensure that the gas-solid separation mechanism 401 and the discharge port are disconnected when the sample material is sucked into the gas-solid separation mechanism 401 under the action of negative pressure, so that the sample material can stay in the gas-solid separation mechanism 401 for a sufficient time and be fully subjected to gas-solid separation.

[0045] It is understood that the negative pressure generating mechanism 402 described in the embodiment of the present invention may be a fan. And because the negative pressure generating mechanism 402 may come into contact with a small amount of granular sample material, it is preferred that the fan blades be wear-resistant blades.

[0046] It is understandable that the number of gas-solid separation mechanisms 401 can be two or more. In order to increase the discharge volume, it is preferred to connect multiple gas-solid separation mechanisms 401 in parallel between the feed port and the discharge port. Furthermore, multiple gas-solid separation mechanisms 401 can be connected in parallel to the same negative pressure generating mechanism 402 to synchronously drive the airflow, or it can be set so that each gas-solid separation mechanism 401 corresponds to one negative pressure generating mechanism 402. In addition, in order to improve the gas-solid separation effect, it is also preferred to connect multiple gas-solid separation mechanisms 401 in series between the feed port and the discharge port, and achieve an ideal separation state through multi-stage separation.

[0047] In one embodiment, Figure 2As shown, the gas-solid separation mechanism 401 includes a separation chamber. The top of the separation chamber is connected to the feed port and the negative pressure generating mechanism 402, respectively, and the bottom of the separation chamber is connected to the discharge port. Preferably, the negative pressure generating mechanism 402 and the discharge port are connected to the top and bottom of the separation chamber respectively along the axial direction of the separation chamber, so that the negative pressure generating mechanism 402 can evacuate air along the axial direction of the separation chamber, thereby forming a negative pressure environment in the separation chamber, so as to adsorb and seal the sealing cover 406 along the axial direction at the bottom of the separation chamber, thereby utilizing the sealing cover 406 in the closed state to separate the separation chamber from the discharge port, thereby ensuring that the sample material in the separation chamber can remain in the separation chamber, thereby extending the duration of gas-solid separation and improving the effect of gas-solid separation.

[0048] In one embodiment, the sidewalls of the separation chamber taper from top to bottom, creating a spiral airflow within the chamber under negative pressure. This spiral airflow drives the sample material within the chamber into a spiral circular motion, thereby achieving gas-solid separation of the sample material. (The gas-solid separation process is described in detail below and is not further detailed here.)

[0049] It is understood that the device 4 further includes a feed pipe 409 and a guide pipe 3. The feed pipe 409 is connected between the gas-solid separation mechanism 401 and the feed inlet, and the guide pipe 3 is connected to the feed pipe 409 through the feed inlet. In other words, the feed pipe 3 and the feed pipe 409 are connected on either side of the feed inlet. The inner diameter of the feed pipe 3 is smaller than that of the feed pipe 409. Preferably, one end of the feed pipe 3 is connected to the feed inlet, and the other end of the feed pipe 3 is equipped with a suction nozzle 2 for aspirating the sample material into the feed pipe 3.

[0050] When the test container reaches the discharge station, the device 4 drives the suction nozzle 2 to insert into the test container. The negative pressure generating mechanism 402 is activated, creating a negative pressure environment within the gas-solid separation mechanism 401 and generating a strong airflow within the material guide pipe 3, which is connected to the gas-solid separation mechanism 401 via the feed pipe 409. This strong airflow impacts the material within the test container through the opening in the suction nozzle 2, causing the sample to be drawn from the test container into the material guide pipe 3 along with the airflow. The material then flows along with the airflow through the material guide pipe 3 and the feed pipe 409 into the gas-solid separation mechanism 401. Because the inner diameter of the feed pipe 3 is smaller than that of the feed pipe 409, which in turn is significantly smaller than the inner diameter of the separation chamber of the gas-solid separation mechanism 401—that is, the internal space of the gas-solid separation mechanism 401 is larger than that of the feed pipe 3—the airflow velocity gradually decreases, and the feed pipe 409 serves as a buffer between the feed pipe 3 and the gas-solid separation mechanism 401. Combined with the structural features of the above-mentioned gas-solid separation mechanism 401, the airflow changes from linear motion to circular motion within the separation chamber. The vast majority of the rotating airflow spirals downward along the inner wall of the separation chamber. During the rotation, centrifugal force is generated, which throws granular or dusty materials with a relative density greater than that of the gas toward the inner wall of the separation chamber. Once the material contacts the wall of the separation chamber, it loses its radial inertial force and falls along the wall due to downward momentum and gravity. When the airflow reaches a certain position at the lower end of the cone of the separation chamber, it reverses from the bottom to the top and continues to spiral upward from the middle of the separation chamber in the same direction of rotation, completing the gas-solid separation. Finally, the gas flows back from the top of the gas-solid separation mechanism 401 to the negative pressure generating mechanism 402.

[0051] In one specific embodiment, the gas-solid separation mechanism 401 further includes an air vent, a first opening, and a second opening. The air vent is connected to the negative pressure generating mechanism 402, with the first opening connected to the feed inlet and the second opening connected to the discharge outlet. The air vent and the second opening are located at the top and bottom of the separation chamber, respectively, along the axial direction of the separation chamber. The negative pressure generating mechanism 402 draws air through the air vent, creating a negative pressure flow within the separation chamber along its axial direction. Due to the sidewall structure of the separation chamber, this negative pressure flow forms an outer spiral downward flow that rotates along the inner wall of the separation chamber, and an inner spiral upward flow that spirals upward along the axial direction of the separation chamber. This drives the sample material in a circular motion within the separation chamber, while dust particles contained in the airflow continuously strike the inclined sidewalls of the separation chamber, causing them to fall. The airflow ultimately returns to the negative pressure generating mechanism 402 through the air vent, achieving gas-solid separation of the sample material. The first opening is located at the top of the separation chamber, next to the air vent. This allows the negative pressure generating mechanism 402 to also provide a suction effect on the feed inlet, thereby driving the sample material into the separation chamber. Furthermore, the first opening is adjacent to the air outlet, which enables the sample material in a gas-solid mixed state entering the separation chamber to be more quickly affected by the spiral airflow and move in a circular motion in the separation chamber, thereby accelerating the efficiency of gas-solid separation.

[0052] In one embodiment, the sealing cover 406 is pivotally connected to the bottom of the separation chamber and is located between the separation chamber and the discharge port, so that the sealing cover 406 can be opened and closed by rotating the sealing cover 406 relative to the bottom of the separation chamber.

[0053] In a specific embodiment, Figure 3 As shown, the sealing cover 406 is pivotally connected to the second opening via a rotating shaft. When the device 4 is in operation, the sealing cover 406 is in a closed state (i.e., a closed state). That is, the sealing cover 406 is pushed by the push rod mechanism 405 to close the second opening. Under the negative pressure environment of the gas-solid separation mechanism 401, it is sealed and fixed between the gas-solid separation mechanism 401 and the discharge port, thereby sealing the gas-solid separation mechanism 401. When the device 4 is discharging, the sealing cover 406 can be switched to an open state, thereby discharging the sample material in the gas-solid separation mechanism 401 through the discharge port.

[0054] In a specific embodiment, Figure 3 As shown, a push rod mechanism 405 is provided at the bottom of the sealing cover 406, and opening and closing are achieved by the push rod mechanism 405. The extended end of the push rod mechanism 405 is arranged toward the bottom of the sealing cover 406, and the extended end of the push rod mechanism 405 can push the sealing cover 406 to close at the second opening when extended.

[0055] Specifically, when the negative pressure generating mechanism 402 is started, the push rod mechanism 405 is powered on and started, and the protruding end of the push rod mechanism 405 is extended toward the sealing cover 406, and the sealing cover 406 is pushed to close at the second opening, and then the push rod mechanism 405 is powered off and retracted. Due to the influence of the negative pressure environment in the gas-solid separation mechanism 401, the sealing cover 406 is adsorbed at the second opening of the gas-solid separation mechanism 401, so that the bottom of the gas-solid separation mechanism 401 is sealed to facilitate the loading of sample materials; when all the sample materials have entered the gas-solid separation mechanism 401 and sufficient gas-solid separation is completed, the negative pressure generating mechanism 402 is closed to eliminate the negative pressure environment in the gas-solid separation mechanism 401, and the sealing cover 406 can be rotated outward along the rotation axis under the action of the gravity of the counterweight block set on the sealing cover 406 and the sample material accumulated on the sealing cover 406 inside the gas-solid separation mechanism 401, thereby opening the sealing cover 406 to realize material discharge.

[0056] In one embodiment, to further enhance the gas-solid separation efficiency of the sample material by the gas-solid separation mechanism 401 and achieve 100% gas-solid separation efficiency, the device 4 further includes a dust filter 403, which is connected to the negative pressure generating mechanism 402. The dust filter 403 is capable of filtering out small amounts of dust carried along by the airflow. Multiple dust filters 403 can be provided, and each of the dust filters 403 can be periodically cleaned, one at a time, without shutting down the machine. Furthermore, the dust filter 403 can be reused after cleaning.

[0057] In one embodiment, after being discharged from the discharge port, the material falls directly onto the second conveying mechanism 6. To prevent dust from being generated during the discharge process, the device 4 also includes a dust bag 408, which is mounted on the discharge port. Preferably, the discharge port is connected to a discharge pipe 404, and the dust bag 408 is mounted on the end of the discharge pipe 404. The other end of the dust bag 408 falls onto the discharged material 7 on the second conveying mechanism 6.

[0058] It is understood that the device 4 further includes a fixed frame 407, the gas-solid separation mechanism 401 is vertically fixed in the fixed frame 407, the negative pressure generating mechanism 402 is installed on the top of the fixed frame 407, and the dust filter 403 is disposed in the fixed frame 407 and located on one side of the gas-solid separation mechanism 401. The feed port of the device 4 is located on the side wall of the fixed frame 407, and the discharge port is located at the bottom of the fixed frame 407.

[0059] Based on the above-mentioned device 4, a detection system according to an embodiment of the present invention is provided. Figure 1 As shown, the system includes a first conveying mechanism 1, a second conveying mechanism 6, and the sample material discharge device 4 described above. The structure of the first conveying mechanism 1 is as described above, and is used to transport the detection container to the discharge station. The second conveying mechanism 6 is preferably arranged below the discharge port of the above-mentioned device 4. The feed port of the sample material discharge device 4 is connected to the first conveying mechanism 1, and the discharge port of the sample material discharge device 4 is connected to the second conveying mechanism 6. By providing the above-mentioned sample material discharge device 4, the detection system has all the advantages of the above-mentioned sample material discharge device 4, which will not be repeated here.

[0060] It can be understood that the first conveying mechanism 1 described in the embodiment of the present invention is arranged on a discharge station located outside the sample material discharge device 4, and the first conveying mechanism 1 is used to transport the detection container carrying the detected sample material discharged from the previous process (such as the detection device) to the discharge station, so that the above-mentioned device 4 of this system can suck the sample material from the detection container into the device 4 through the suction nozzle 2 at the end of the guide tube 3, and discharge it to the second conveying mechanism 6 after gas-solid separation.

[0061] In order to reasonably optimize the system structure and better save space, it is preferred that the system also includes a support frame 5, the above-mentioned device 4 is fixed on the support frame 5, and the second conveying mechanism 6 is arranged below the support frame 5, so that the second conveying mechanism 6 can be correspondingly arranged directly below the discharge port of the above-mentioned device 4 to prevent spillage during material discharge.

[0062] It is understandable that the above-mentioned second conveying mechanism 6 can all be a belt conveyor.

[0063] A sample material discharge method according to an embodiment of the present invention is performed by the sample material discharge device 4 as described above, or by the detection system as described above; the sample material discharge method includes: driving the negative pressure generating mechanism 402 to operate so that a negative pressure environment is formed inside the gas-solid separation mechanism 401, and the sealing cover 406 closes under the action of the negative pressure environment and separates the gas-solid separation mechanism 401 from the discharge port; and driving the negative pressure generating mechanism 402 to stop so that the sealing cover 406 opens and connects the gas-solid separation mechanism 401 with the discharge port. Compared with the existing technology, this method can control the opening and closing of the negative pressure environment inside the gas-solid separation mechanism 401, thereby realizing the automatic switching of the sealing cover 406 between the open state and the closed state, and can also ensure that the gas-solid separation mechanism 401 and the discharge port are disconnected when the sample material is sucked into the gas-solid separation mechanism 401 under the action of negative pressure, so that the sample material can stay inside the gas-solid separation mechanism 401 for a sufficient time and receive sufficient gas-solid separation. In addition, the entire device 4 can be switched in sequence between the three processes of material collection, separation, and discharge by cyclically opening and closing the negative pressure environment. It can be seen that compared with the existing technology, this method can improve the operating efficiency of the device 4 and the system, simplify the maintenance and repair process of the device 4, and improve the efficiency of production and sample detection.

[0064] Based on the above-mentioned device 4, system and method, the embodiment of the present invention provides a specific implementation process to describe the implementation process of the device 4, system and method in detail.

[0065] Specifically, when the system detects that the detection container is transported to the suction nozzle 2 by the first conveying mechanism 1, the device 4 is powered on and starts working. First, the negative pressure generating mechanism 402 is turned on, and then the push rod mechanism 405 is powered on and the protruding end is extended to the front top to push and close the sealing cover 406. Then the push rod mechanism 405 is powered off and the protruding end is retracted. In this state, the sealing cover 406 is adsorbed and sealed and fixed between the gas-solid separation mechanism 401 and the discharge port under the action of the negative pressure environment. After the device 4 starts working, the sample material in the detection container is continuously transported to the gas-solid separation mechanism 401 through the guide pipe 3 with the air flow for gas-solid separation. During the gas-solid separation process, the sample material is continuously accumulated at the bottom of the gas-solid separation mechanism 401. The operating time of the device 4 can be determined according to actual conditions. After the sample material in the test container is emptied, the negative pressure generating mechanism 402 is closed, the sealing cover 406 reopens due to gravity, and the sample material in the gas-solid separation mechanism 401 falls into the discharge pipe 404, and then falls onto the second conveying mechanism 6 through the dust bag 408 to return to the industrial production line. The device 4 can operate in a reciprocating manner according to the above process.

[0066] The above embodiments are intended to illustrate the present invention only and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications, or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and should be encompassed by the scope of the claims of the present invention.

[0067] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0068] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; and direct connections or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on the specific circumstances.

[0069] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0070] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

Claims

1. A sample material discharge device, comprising a feed port and a discharge port, characterized in that: Also includes: At least one gas-solid separation mechanism connected between the feed port and the discharge port; a negative pressure generating mechanism, connected to the gas-solid separation mechanism, for forming a negative pressure environment inside the gas-solid separation mechanism; a sealing cover, disposed between the gas-solid separation mechanism and the discharge port, the sealing cover being in a closed state and isolating the gas-solid separation mechanism from the discharge port under the action of the negative pressure environment, and being in an open state and connecting the gas-solid separation mechanism and the discharge port when the negative pressure environment disappears; The gas-solid separation mechanism includes a separation chamber, the top of the separation chamber is respectively connected to the feed port and the negative pressure generating mechanism, the bottom of the separation chamber is connected to the discharge port, and the sealing cover is movably connected to the bottom of the separation chamber and is located between the separation chamber and the discharge port; the side wall of the separation chamber gradually narrows from the top to the bottom, so that a spiral airflow is formed inside the separation chamber in a negative pressure environment; The gas-solid separation mechanism further includes an air port, a first opening, and a second opening, wherein the air port and the second opening are respectively arranged at the top and bottom of the separation chamber in an axial direction of the separation chamber, the first opening being configured at the top of the separation chamber and located next to the air port, the air port being communicated with the negative pressure generating mechanism, the first opening being communicated with the feed port, and the second opening being connected to the discharge port; The negative pressure generating mechanism draws air through the air port to form a negative pressure airflow in the interior of the separation chamber along its axial direction, and causes the negative pressure airflow to form an outer spiral descending airflow rotating along the inner wall of the separation chamber, and to form an inner spiral ascending airflow along the axial direction of the separation chamber; The sealing cover is pivotally connected to the second opening via a rotating shaft, and a push rod mechanism is provided at the bottom of the sealing cover. The extended end of the push rod mechanism is arranged toward the bottom of the sealing cover, and the extended end of the push rod mechanism can push the sealing cover to close the second opening when in an extended state; The sealing cover is in a closed state when the sample material discharge device is working, that is, the sealing cover is pushed by the push rod mechanism to close at the second opening, and then the push rod mechanism is powered off and retracted. Due to the influence of the negative pressure environment in the gas-solid separation mechanism, the sealing cover is adsorbed at the second opening, thereby making the bottom of the gas-solid separation mechanism airtight; when the sample material discharge device is discharging material, the sealing cover can be switched to an open state, and the negative pressure generating mechanism is closed to eliminate the negative pressure environment in the gas-solid separation mechanism. Under the action of the counterweight block provided on the sealing cover and the gravity of the sample material accumulated on the sealing cover inside the gas-solid separation mechanism, the sealing cover can be rotated outward along the rotation axis.

2. The sample material discharge device according to claim 1, characterized in that: It also includes a feed pipe and a guide pipe, the feed pipe is connected between the gas-solid separation mechanism and the feed port, and the guide pipe is connected to the feed pipe through the feed port; the inner diameter of the guide pipe is smaller than the inner diameter of the feed pipe.

3. The sample material discharge device according to claim 2, characterized in that: One end of the material guiding tube is communicated with the material feed port, and the other end of the material guiding tube is provided with a suction nozzle, and the suction nozzle is used to suck the sample material into the material guiding tube.

4. The sample material discharge device according to claim 1, characterized in that: It also includes a dust removal filter, which is connected to the negative pressure generating mechanism.

5. The sample material discharge device according to claim 1, characterized in that: It also includes a dust bag, which is sleeved on the discharge port.

6. The sample material discharge device according to any one of claims 1 to 5, characterized in that: The number of the gas-solid separation mechanisms is two or more, and each of the gas-solid separation mechanisms is connected in parallel or in series between the feed port and the discharge port.

7. A detection system, characterized in that: It comprises a first conveying mechanism, a second conveying mechanism and a sample material discharge device according to any one of claims 1 to 6, wherein the feed port of the sample material discharge device is connected to the first conveying mechanism, and the discharge port of the sample material discharge device is connected to the second conveying mechanism.

8. A method for discharging a sample material, characterized in that: The method is performed by the sample material discharge device according to any one of claims 1 to 6, or by the detection system according to claim 7; The sample material discharge method includes: Driving the negative pressure generating mechanism to operate so as to form a negative pressure environment inside the gas-solid separation mechanism, and the sealing cover closes under the action of the negative pressure environment to isolate the gas-solid separation mechanism from the discharge port; The negative pressure generating mechanism is driven to stop, so that the sealing cover is opened and the gas-solid separation mechanism is connected with the discharge port.

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