CN111678742A - Online sampling method and device for bulk materials and online detection system - Google Patents

Abstract

The invention relates to the technical field of ferrous metallurgy equipment, in particular to a bulk material online sampling method and device and an online detection system. This online sampling device of bulk material includes: the base is provided with a detection port for connecting a detection device; the fixing frame is arranged on the base and is positioned beside the detection port; the extension end of the telescopic rod is provided with a material taking hopper which can be switched between a material taking state and a material placing state; the telescopic rod is installed on the fixing frame and used for driving the material taking hopper to move between the blanking area and the detection port through telescopic motion. The device can take materials on line in a blanking area and convey the taken materials to the detection device for on-line detection, and has the advantages of small single sampling amount, less material circulation times, and fast and efficient material transmission process, so that the efficiency and the safety of material detection are improved.

Description

Online sampling method and device for bulk materials and online detection system

Technical Field

The invention relates to the technical field of ferrous metallurgy equipment, in particular to a bulk material online sampling method and device and an online detection system.

Background

In the field of sintering and pelletizing in the ferrous metallurgy industry, multi-component materials are involved in raw material treatment. Different materials need to be uniformly mixed in the raw material treatment stage, and the more uniform the material mixing is, the more easily the subsequent granulation and roasting stages can be controlled, so that the quality of the final sintered pellet product is better. In the process of material mixing, accurate material mixing uniformity data can be effectively used for the operation parameter feedback adjustment of mixing apparatus for improve mixing apparatus's operation effect, reduce equipment energy consumption and material consumption, promote the misce bene degree of material.

Therefore, it is necessary to provide an on-line material mixing degree detection device on the production line, and the on-line material mixing degree detection process needs to sample and analyze on the production line in real time, the on-line detection needs to meet the requirements of less sampling amount, high sampling speed and high sampling frequency, and the sampling device and the detection device need to be reasonably connected and matched.

However, most of the existing online detection adopts manual material taking, which wastes time and labor. The existing sampling device has the problems of overlarge single sampling amount, more material conversion times and easy material blockage of the detection device. Moreover, the existing sampling device cannot be well connected and matched with the detection device reasonably, so that the problems of low online detection efficiency and poor detection safety are easily caused.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides an on-line sampling device for bulk materials, which aims to solve the problems that the single sampling amount of the existing sampling device is too large, the material conversion times are more, and the material blockage of the detection device is easily caused.

The invention also provides an online detection system.

The invention also provides an on-line sampling method for the bulk materials.

According to an embodiment of the first aspect of the invention, the bulk material online sampling device comprises:

the base is provided with a detection port for connecting a detection device;

the fixing frame is arranged on the base and is positioned beside the detection port;

the extension end of the telescopic rod is provided with a material taking hopper which can be switched between a material taking state and a material placing state; the telescopic rod is installed on the fixing frame and used for driving the material taking hopper to move between the blanking area and the detection port through telescopic motion.

According to one embodiment of the invention, the material taking hopper comprises a fixed hopper and an opening and closing hopper which are communicated with each other, the fixed hopper is detachably arranged at the extending end of the telescopic rod, and the top of the fixed hopper is provided with a material receiving opening; the opening and closing hopper is pivotally connected to the fixed hopper, an openable discharging port is formed between the bottom of the opening and closing hopper and the bottom of the fixed hopper, and the discharging port is used for being opened in a discharging state and being closed in a material taking state. .

According to one embodiment of the invention, the bottom of the opening and closing bucket is connected with the telescopic rod through an elastic piece, and the elastic piece is used for closing the discharge opening through bias.

According to one embodiment of the invention, a feeler lever is arranged at the bottom of the opening and closing hopper, an ejector rod arranged corresponding to the detection port is arranged on the fixed frame, the ejector rod is arranged opposite to the feeler lever, and the ejector rod is used for pushing the feeler lever so as to drive the discharge port above the detection port to be opened.

According to one embodiment of the invention, the fixed frame is provided with a driving mechanism and a guiding mechanism, the driving mechanism is connected with the telescopic rod, and the guiding mechanism is provided with a guiding channel for the telescopic rod to do telescopic motion.

According to one embodiment of the invention, the driving mechanism comprises a driving motor and a driving wheel which are respectively installed on the fixed frame, a plurality of pin rollers are arranged on the telescopic rod at intervals along the length direction, a plurality of gear teeth are arranged on the outer edge of the driving wheel, and the driving wheel drives each gear tooth to be meshed with each pin roller through rotation; the driving wheel is connected with the driving motor.

According to one embodiment of the invention, the guiding mechanism comprises at least two sets of gear sets, and each set of gear sets is arranged on the fixed frame along the length direction of the telescopic rod; each group of the blocking wheel groups comprises a first blocking wheel and a second blocking wheel, the first blocking wheel and the second blocking wheel of each group are respectively in rolling fit with the upper end and the lower end of the telescopic rod, and the guide channel is constructed between the first blocking wheel and the second blocking wheel of each group.

According to one embodiment of the invention, a pressure sensor is arranged on the first catch wheel.

An online detection system according to an embodiment of the second aspect of the invention comprises a first conveying device, a second conveying device, a detection device and the online sampling device for bulk materials, wherein a blanking area is configured between the first conveying device and the second conveying device; the detection port of the bulk material online sampling device is connected with the detection device, and the material taking hopper of the bulk material online sampling device can move between the blanking area and the detection port.

An online bulk material sampling method according to an embodiment of the third aspect of the invention is performed by the online bulk material sampling device as described above or the online detection system as described above;

the online sampling method for the bulk materials comprises the following steps:

the telescopic rod is driven to extend out relative to the fixed frame until the material taking hopper is positioned in the blanking area, and the material taking hopper is kept in a material receiving state;

the telescopic rod is driven to retract relative to the fixed frame until the material taking hopper is positioned above the detection port, and the material taking hopper is kept in a material placing state.

One or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

the bulk material online sampling device is used for taking materials from a blanking area and sending the materials to a detection device. This online sampling device of bulk material includes: the automatic feeding device comprises a base, a fixing frame and a telescopic rod, wherein the base is provided with a detection port for connecting the detection device, the fixing frame is arranged on the base and is positioned beside the detection port, the extending end of the telescopic rod is provided with a material taking hopper capable of being switched between a material taking state and a material placing state, and the telescopic rod is arranged on the fixing frame and is used for driving the material taking hopper to move between a material falling region and the detection port through telescopic motion. The device reasonably connects and matches the device with the detection device by using the detection port on the base, and extends out of the blanking area by driving the telescopic rod, so that the material taking hopper in a material taking state can take materials on line in the blanking area, and the device can take materials with small material taking amount and fast material taking speed in one time by taking materials by the material taking hopper; the device still withdraws to the detection mouth through the drive telescopic link to material sample ability high efficiency in will getting the hopper carries to carry out on-line measuring in the detection device, and the device's material flows to change the number of times few, material transmission process high efficiency, with efficiency and the security that improves material detection.

The on-line detection system comprises a first conveying device, a second conveying device, a detection device and the bulk material on-line sampling device, wherein a blanking area is formed between the first conveying device and the second conveying device; the detection port of the device is connected with the detection device, and the material taking hopper of the device can move between the blanking area and the detection port. The online detection system has all the advantages of the bulk material online sampling device by arranging the bulk material online sampling device, and the detailed description is omitted.

The bulk material online sampling method is executed by the bulk material online sampling device or the online detection system; the bulk material online sampling method comprises the following steps: the telescopic rod is driven to extend out relative to the fixed frame until the material taking hopper is positioned in the blanking area and the material taking hopper is kept in a material receiving state; the telescopic rod is driven to retract relative to the fixed frame until the material taking hopper is positioned above the detection port, and the material taking hopper is kept in a material placing state. The on-line sampling method utilizes the telescopic motion of the telescopic rod, so that the materials can be quickly and efficiently circulated between the blanking area and the detection device, the transmission process is accelerated, and the circulation times are reduced; the method can also realize material receiving and blanking by utilizing the state switching of the material taking hopper, and realize small material taking amount and controllable material taking of sample materials.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of an on-line bulk material sampling device in an on-line detection system according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an on-line bulk material sampling device according to an embodiment of the present invention;

FIG. 3 is a top view of an in-line bulk material sampling device according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A shown in FIG. 3;

FIG. 5 is a cross-sectional view taken along line B-B shown in FIG. 3;

FIG. 6 is a schematic structural diagram of a bulk material on-line sampling device according to an embodiment of the present invention, in which a material taking hopper is in a closed state;

fig. 7 is a schematic structural diagram of a bulk material online sampling device according to an embodiment of the present invention, in which a material taking hopper is in an open state.

Reference numerals:

1: bulk material online sampling devices (referred to as "devices" for short);

101: a material taking hopper; 102: a telescopic rod; 103: a first catch wheel; 104: a fixed mount; 105: a drive motor; 106: a top rod; 107: a feeler lever; 108: a second catch wheel; 109: a drive wheel; 110: a base; 111: a pin roll; 112: an elastic member;

1201: a fixed hopper; 1202: opening and closing the bucket;

2: a detection device;

201: a funnel; 202: detecting the container;

3: a first conveying device; 4: a second conveying device.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

As shown in fig. 1 to 7, an embodiment of the present invention provides an online bulk material sampling device 1 (referred to as "device" in the embodiment of the present invention), where the online bulk material sampling device 1 is used for taking a bulk material from a blanking area and sending the bulk material to a detection device 2. Based on the device 1, the embodiment of the present invention further provides an online detection system (referred to as "system" in the embodiment of the present invention) and an online sampling method for bulk materials (referred to as "method" in the embodiment of the present invention).

Specifically, as shown in fig. 2, the device 1 includes a base 110, a fixed frame 104 and a telescopic rod 102. The base 110 can be fixed on the detection device 2, a detection port for connecting the detection device 2 is arranged on the base 110, and the device 1 and the detection device 2 are reasonably connected and matched by using the detection port on the base 110. Preferably, the detection port is disposed above the detection container 202 of the detection device 2 to improve the accuracy and safety of the material falling into the detection device 2 through the detection port. The fixing frame 104 is installed on the base 110 and located beside the detection port, and the fixing frame 104 can be used as a supporting part for the movement of the telescopic rod 102 and can play a guiding role for the movement of the telescopic rod 102. The extension end of the telescopic rod 102 is provided with a material taking hopper 101 capable of being switched between a material taking state and a material placing state, and the telescopic rod 102 is mounted on the fixed frame 104 and used for driving the material taking hopper 101 to move between a material placing area and a detection port through telescopic motion. The device 1 extends out of the blanking area through the driving telescopic rod 102, so that the material taking hopper 101 in the material taking state can take materials on line in the blanking area, and the material taking amount of the device 1 in one time is small and the material taking speed is high by taking the materials through the material taking hopper 101. The device 1 still retracts to the detection port through the driving telescopic rod 102, so that the material samples in the material taking hopper 101 can be conveyed to the detection device 2 for online detection in a high-speed and high-efficiency mode, the material circulation frequency of the device 1 is low, the material transmission process is high in speed and high in efficiency, and the efficiency and the safety of material detection are improved.

It can be understood that the blanking area according to the embodiment of the present invention refers to a blanking area formed in any production process on a production line. For example, a blanking region formed between the outlet opening and the outlet opening of the mixer or between the inlet opening and the inlet opening of the granulator or roaster.

It can be understood that the detection device 2 according to the embodiment of the present invention is preferably an online material blending degree detection device 2, so as to monitor the blending degree of the multi-component material online and feed back the blending degree to the blending equipment for adjustment, thereby ensuring that the material is kept in a good blending state.

It can be understood that, in order to make the telescopic motion of the telescopic rod 102 shortest so as to make the material flow efficiency highest, the fixing frame 104 and the blanking area are preferably respectively disposed at two opposite sides of the detection port, so that the blanking area and the detection port are both located along the length direction of the telescopic rod 102 and the extension direction thereof, and the telescopic rod 102 can directly point to the blanking area to make the telescopic motion.

It can be understood that the material taking hopper 101 according to the embodiment of the present invention is provided with a material receiving cavity with a predetermined volume inside. The material taking hopper 101 is detachably mounted on the telescopic end of the telescopic rod 102 through a locking mechanism such as a bolt or a screw, so that the material taking hopper 101 with a proper volume can be mounted according to the material taking quantity requirement of a material sample.

It can be understood that the material taking hopper 101 is in a material taking state, which means that materials can enter and remain in the material receiving cavity; correspondingly, the material taking hopper 101 is in a material placing state, which means that the material can leave the material receiving cavity.

In one embodiment, in order to enable the material taking bucket 101 to flexibly and dynamically realize state switching according to the telescopic motion of the telescopic rod 102, the material taking bucket 101 according to the embodiment of the present invention includes a fixed bucket 1201 and an open-close bucket 1202 which are communicated with each other. The fixed hopper 1201 is detachably mounted at the extending end of the telescopic rod 102, and a material receiving opening is arranged at the top of the fixed hopper 1201 and can be set to be in a normally open state, so that the material taking hopper 101 can receive materials in a blanking area conveniently. The opening and closing bucket 1202 is pivotally connected to the fixed bucket 1201. An openable and closable drain opening is formed between the bottom of the openable and closable hopper 1202 and the bottom of the fixed hopper 1201, and the drain opening is configured to be opened when the material taking hopper 101 is in a discharging state and to be closed when the material taking hopper 101 is in a material taking state.

Preferably, the top of the fixed hopper 1201 is configured with an open receiving opening. One end of the top of the fixed bucket 1201, which is away from the extending end of the telescopic rod 102, is connected with the top end of the opening and closing bucket 1202 through a rotating shaft so as to realize that the opening and closing bucket 1202 rotates relative to the fixed bucket 1201, and therefore, an openable and closable discharge hole is constructed between the bottom of the opening and closing bucket 1202 and the bottom of the fixed bucket 1201 through the relative rotation between the opening and closing bucket 1202 and the fixed bucket 1201.

It should be noted that, a pair of connecting plates may also be extended from the side surface of the open-close bucket 1202 and the side surface of the fixed bucket 1201, respectively, which are opposite to each other, and the two pairs of connecting plates are connected by a rotating shaft, so that the open-close bucket 1202 and the fixed bucket 1201 rotate relatively. When the openable bucket 1202 is rotated to close between the top end of the openable bucket 1202 and the top end of the fixed bucket 1201, the bottom end of the openable bucket 1202 and the bottom end of the fixed bucket 1201 are separated from each other, and thus an open discharge port can be formed between the bottom of the openable bucket 1202 and the bottom of the fixed bucket 1201. Correspondingly, in a state that the openable bucket 1202 is rotated to the state that the top end of the openable bucket 1202 is separated from the top end of the fixed bucket 1201, the bottom end of the openable bucket 1202 and the bottom end of the fixed bucket 1201 are closed, so that the discharge port configured between the bottom of the openable bucket 1202 and the bottom of the fixed bucket 1201 can be closed, and an opened material receiving opening is formed due to the separation between the top end of the openable bucket 1202 and the top end of the fixed bucket 1201. This setting can make getting hopper 101 can open under getting the material state and connect material opening and automatic closed drain hole to, this getting hopper 101 can be closed under the blowing state and connect the material opening and open the drain hole automatically, thereby make getting hopper 101 can both play better protection and prevent losing the effect of spilling to the material under different states.

In one embodiment, as shown in fig. 3, the bottom of the foldable bucket 1202 is connected to the retractable rod 102 through the elastic member 112. The elastic member 112 is used to close the material discharging opening by bias, so that the opening and closing hopper 1202 can be driven to reset by the elastic action, i.e. the elastic member 112 is arranged to ensure that the material discharging opening is in a normally closed state. Specifically, the method comprises the following steps: as shown in fig. 7, in the process of switching the material taking hopper 101 from the material taking state to the material placing state, the open-close hopper 1202 is forced to rotate and drives the material discharging opening to be opened, and the bottom of the open-close hopper 1202 drives the elastic member 112 to be forced to extend; correspondingly, as shown in fig. 6, in the process of switching the material taking hopper 101 from the material placing state to the material taking state, the opening and closing hopper 1202 is driven to be automatically closed due to the restoring action of the elastic member 112. This setting can guarantee to get hopper 101 and open the drain hole in the top of detecting the mouth accurately, prevents effectively that the material from losing and spilling.

Preferably, the elastic member 112 is a spring, one end of the spring is connected to one side of the bottom of the opening and closing bucket 1202, and the other end of the spring is connected to the same side of the telescopic rod 102.

In one embodiment, as shown in fig. 3, the bottom of the open-close bucket 1202 is provided with a feeler lever 107, the fixing frame 104 is provided with a top bar 106 corresponding to the detection port, and the top bar 106 is arranged opposite to the feeler lever 107. The top rod 106 is used for pushing the contact rod 107 to drive the discharge opening above the detection opening to be opened. In other words, when the retractable rod 102 drives the material taking bucket 101 to move to the position above the detection port, the top rod 106 on the fixing frame 104 pushes the feeler lever 107, so that the feeler lever 107 drives the open/close bucket 1202 to rotate to open the material discharge port. This setting can guarantee equally to get hopper 101 and open the drain hole in the top of detecting the mouth accurately, prevents effectively that the material from losing and spilling.

It can be understood that, the above-mentioned elastic member 112, the feeler lever 107 and the ejector rod 106 are preferably combined to ensure the accurate discharge and the rapid reset of the material taking hopper 101, so as to further improve the material circulation precision and the safety.

It can be understood that, as shown in fig. 3, preferably, the elastic member 112 and the contact rod 107 are respectively disposed on two sides of the telescopic rod 102, and the push rod 106 is disposed on the fixed frame 104 toward one end of the material taking bucket 101, and the push rod 106 and the contact rod 107 are ensured to be disposed opposite to each other, so as to ensure that the elastic action of the elastic member 112 and the pushing action between the push rod 106 and the contact rod 107 do not interfere with each other, and the structure is reasonably optimized. It is further preferred that the feeler lever 107 and the ram 106 are located beside the detecting opening, so that the material in the material-taking hopper 101 will not touch the ram 106 and the feeler lever 107 during falling into the detecting opening, thereby further preventing the material from being scattered.

As shown in fig. 1, 6 and 7, in order to improve the accuracy of the material dropping from the material-taking hopper 101 of the apparatus 1 to the detection apparatus 2, it is preferable that the detection port be correspondingly disposed above the detection container 202 of the detection apparatus 2. Further, in order to improve the accuracy of the material falling from the material taking hopper 101 into the detection port, it is preferable to install a funnel 201 in the detection port to expand the blanking range of the material taking hopper 101 to the detection port, and to prevent the material from overflowing and scattering in the blanking process.

In one embodiment, the mounting bracket 104 has a drive mechanism and a guide mechanism mounted thereon. The driving mechanism is connected to the telescopic rod 102 and is used for driving the telescopic rod 102 to perform telescopic motion relative to the fixed frame 104. The guiding mechanism is provided with a guiding channel for the telescopic rod 102 to perform telescopic motion, and the guiding channel can not only guide the telescopic direction of the telescopic rod 102, but also monitor the state of the telescopic motion of the telescopic rod 102.

In one embodiment, as shown in fig. 3 and 4, the drive mechanism includes a drive motor 105 and a drive wheel 109, each mounted on the mount 104. The driving motor 105 is connected with the driving wheel 109, and the driving motor 105 is used for driving the driving wheel 109 to rotate. The telescopic rod 102 is provided with a plurality of pin rollers 111 arranged at intervals along the length direction, a plurality of gear teeth are arranged on the outer edge of the driving wheel 109, and the driving wheel 109 drives each gear tooth to be meshed with each pin roller 111 through rotation. Since a gap is left between the adjacent pin rollers 111, the driving wheel 109 is inserted into each gap in turn through each gear tooth during the rotation process, so that the telescopic rod 102 is driven to perform telescopic motion along the length direction thereof under the driving of the meshing action.

It can be understood that, as shown in fig. 3, the fixing frame 104 includes two fixing plates disposed oppositely, and a space for the telescopic rod 102 to move is left between the two fixing plates. The driving motor 105 is mounted on any one of the fixing plates and located outside the fixing frame 104, and the driving shaft of the driving motor 105 passes through the fixing frame 104 and is inserted into the shaft hole of the driving wheel 109, so that the driving wheel 109 is rotatably mounted inside the fixing frame 104 and is connected with the driving motor 105 at the inner side and the outer side of the fixing plate respectively.

It should be noted that the inner side of the fixing frame 104 according to the embodiment of the present invention refers to a space between two fixing plates.

In one embodiment, as shown in fig. 3, 4 and 5, the guiding mechanism includes at least two sets of catch wheel sets, each set of catch wheel set being mounted on the fixing frame 104 along the length direction of the telescopic rod 102 to form a guiding channel by the arrangement of the sets of catch wheel sets. Each group of gear sets comprises a first gear 103 and a second gear 108, the first gear 103 and the second gear 108 of each group are respectively in rolling fit with the upper end and the lower end of the telescopic rod 102, and a guide channel is constructed between the first gear 103 and the second gear 108 of each group.

Preferably, as shown in fig. 5, the cross-sectional upper end of the telescopic rod 102 is configured as a triangle, preferably along the cross-section of the telescopic rod 102, which functions as: because the telescopic rod 102 and the fixing frame 104 are jointly constructed into a long cantilever structure, materials in a material falling area can generate large impact force on the telescopic end of the telescopic rod 102 in the material taking process, the upper end of the cross section of the telescopic rod 102 is constructed into a triangle, so that the stress can be reduced, and the telescopic rod 102 is prevented from deforming under the impact of falling materials when the telescopic rod 102 runs for a long time. Correspondingly, for reasonably optimizing the structure and facilitating the driving of the telescopic rod 102, it is preferable that the cross-sectional lower end of the telescopic rod 102 is configured as a hollow structure, i.e. the top ends of the two side walls of the telescopic rod 102 are closed to configure as the top end of a triangle, and the bottom ends of the two side walls are separated to configure as the above-mentioned hollow mechanism between the two side walls. And, a plurality of pin rollers 111 are arranged at intervals between the bottom ends of the two side walls. The respective pin rollers 111 are preferably arranged at equal intervals. For further reasonable optimization of the structure and space saving, it is preferable that the driving wheel 109 is disposed below the telescopic rod 102 and between the two second stopping wheels 108. The rotational movement of the driving wheel 109 is converted into a linear movement of the telescopic rod 102 by the engagement of the pin roller 111 with the driving wheel 109. In order to ensure the stable operation of the telescopic rod 102 and prevent the telescopic rod 102 from moving up and down, the wheel surface of the first catch wheel 103 preferably located at the top end of the telescopic rod 102 is provided with a sharp groove matched with the top end of the telescopic rod 102, so that the telescopic rod 102 can be effectively prevented from moving along the vertical direction of the telescopic motion.

It can be seen that the fixing frame 104, the driving mechanism and the guiding mechanism according to the embodiment of the present invention are configured to be open structure, so that even if dust adheres to the telescopic rod 102 and the driving wheel 109, the driving mechanism with the open structure can make the dust fall off automatically by the operation of the components during the driving engagement process, thereby ensuring the smooth operation of the device 1 without causing the movement of the device 1 to be locked due to the adhesion of the moisture-containing dust to the driving mechanism or the guiding mechanism.

In one embodiment, a pressure sensor is provided on the first catch wheel 103. The pressure sensor is used for monitoring the acting force of the telescopic rod 102 on the first catch wheel 103, so that whether the material is successfully taken by the material taking hopper 101 or not can be judged, and the running state of the telescopic rod 102 can be monitored. Preferably, two sets of gear sets are installed in the fixing frame 104, one set of gear sets is located at one end of the fixing frame 104 facing the material taking bucket 101, and the other set of gear sets is located at one end of the fixing frame 104 far away from the material taking bucket 101. With the end of the fixed frame 104 facing the material-taking bin 101 as the front end, since the telescopic rod 102 and the fixed frame 104 are configured as a cantilever structure, the length of the cantilever section (i.e. the extension section) of the telescopic rod 102 will gradually change during the operation of the device 1. In the extending process of the telescopic rod 102, the cantilever section of the telescopic rod 102 is gradually lengthened, so that the acting force of the telescopic rod 102 on the first catch wheel 103 positioned at the front end of the fixed frame 104 is gradually reduced, and the acting force of the telescopic rod 102 on the first catch wheel 103 positioned at the rear end of the fixed frame 104 is gradually increased; correspondingly, in the retracting process of the telescopic rod 102, the cantilever section of the telescopic rod 102 becomes gradually shorter, the first catch wheel 103 located at the front end of the fixed frame 104 is gradually increased by the acting force of the telescopic rod 102, and the first catch wheel 103 located at the rear end of the fixed frame 104 is gradually decreased by the acting force of the telescopic rod 102. The above arrangement can detect the operation state of the telescopic rod 102 through the respective stress changes of the first catch wheels 103 of the front and rear catch wheel sets. And when the telescopic rod 102 extends into the blanking area, the dropping of the material impacts the material taking hopper 101 and the telescopic rod 102, so that a large sudden change of stress is generated on the telescopic rod 102, the force of the sudden change can be transmitted to the two first blocking wheels 103 and detected by the pressure sensor, and whether the material is successfully taken by the material taking hopper 101 can be judged by judging the motion state of the telescopic rod 102 and acquiring the data of the sudden change of stress of the telescopic rod 102.

The embodiment of the invention also provides an online detection system. As shown in fig. 1, the system comprises a first conveying device 3, a second conveying device 4, a detection device 2 and the bulk material online sampling device 1. In this system, a blanking region is formed between the first conveyor 3 and the second conveyor 4. The detection port of the apparatus 1 is connected to the detection device 2, and the hopper 101 of the apparatus 1 is movable between the blanking area and the detection port. The online detection system has all the advantages of the online bulk material sampling device 1 by arranging the online bulk material sampling device 1, and the detailed description is omitted.

The embodiment of the invention also provides an online sampling method for the bulk materials. The method is carried out by the above-mentioned bulk material on-line sampling device 1 or by the above-mentioned on-line detection system.

Specifically, the online sampling method comprises the following steps:

the telescopic rod 102 is driven to extend relative to the fixing frame 104 until the material taking hopper 101 is located in the blanking area, and the material taking hopper 101 is kept in a material receiving state;

the telescopic rod 102 is driven to retract relative to the fixed frame 104 until the material taking bucket 101 is positioned above the detection port and the material taking bucket 101 is kept in a material discharging state.

It can be understood that the above steps are not sequential, and may be that the retractable rod 102 is extended first and then retracted, or that the retractable rod 102 is retracted first and then extended, and the initial action is determined according to the specific position of the retractable rod 102 during the use of the device 1 and the system.

According to the online sampling method, the telescopic motion of the telescopic rod 102 is utilized, so that the materials can be quickly and efficiently circulated between the blanking area and the detection device 2, the transmission process is accelerated, and the circulation times are reduced; the method can also realize material receiving and blanking by utilizing the state switching of the material taking hopper 101, and realize small material taking amount and controllable material taking of sample materials.

The above embodiments are merely illustrative of the present invention and are not to be construed as limiting the 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 equivalents may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and the technical solution of the present invention is covered by the claims of the present invention.

In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.

In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Claims (10)

1. The utility model provides an online sampling device of bulk material which characterized in that includes:

the base is provided with a detection port for connecting a detection device;

the fixing frame is arranged on the base and is positioned beside the detection port;

the extension end of the telescopic rod is provided with a material taking hopper which can be switched between a material taking state and a material placing state; the telescopic rod is installed on the fixing frame and used for driving the material taking hopper to move between the blanking area and the detection port through telescopic motion.

2. The bulk material online sampling device of claim 1, wherein the material taking hopper comprises a fixed hopper and an opening and closing hopper which are communicated with each other, the fixed hopper is detachably mounted at the extending end of the telescopic rod, and the top of the fixed hopper is provided with a material receiving opening; the opening and closing hopper is pivotally connected to the fixed hopper, an openable discharging port is formed between the bottom of the opening and closing hopper and the bottom of the fixed hopper, and the discharging port is used for being opened in a discharging state and being closed in a material taking state.

3. The bulk material online sampling device of claim 2, wherein the bottom of the open-close hopper is connected with the telescopic rod through an elastic member, and the elastic member is used for closing the discharge port through bias.

4. The bulk material online sampling device according to claim 3, wherein a feeler lever is arranged at the bottom of the open-close hopper, a top rod corresponding to the detection port is arranged on the fixed frame, the top rod is opposite to the feeler lever, and the top rod is used for pushing the feeler lever to drive the discharge port above the detection port to open.

5. The bulk material online sampling device according to any one of claims 1 to 4, wherein a driving mechanism and a guiding mechanism are mounted on the fixed frame, the driving mechanism is connected with the telescopic rod, and a guiding channel for the telescopic rod to perform telescopic motion is arranged on the guiding mechanism.

6. The bulk material online sampling device of claim 5, wherein the driving mechanism comprises a driving motor and a driving wheel which are respectively installed on the fixed frame, a plurality of pin rollers are arranged on the telescopic rod at intervals along the length direction, a plurality of gear teeth are arranged on the outer edge of the driving wheel, and the driving wheel drives each gear tooth to be meshed with each pin roller through rotation; the driving wheel is connected with the driving motor.

7. The online bulk material sampling device according to claim 5, wherein the guiding mechanism comprises at least two sets of blocking wheel sets, each set of blocking wheel set is mounted on the fixed frame along the length direction of the telescopic rod;

each group of the blocking wheel groups comprises a first blocking wheel and a second blocking wheel, the first blocking wheel and the second blocking wheel of each group are respectively in rolling fit with the upper end and the lower end of the telescopic rod, and the guide channel is constructed between the first blocking wheel and the second blocking wheel of each group.

8. The bulk material on-line sampling device of claim 7, wherein the first catch wheel is provided with a pressure sensor.

9. An on-line detection system, which is characterized by comprising a first conveying device, a second conveying device, a detection device and the bulk material on-line sampling device as claimed in any one of claims 1 to 8, wherein a blanking area is configured between the first conveying device and the second conveying device; the detection port of the bulk material online sampling device is connected with the detection device, and the material taking hopper of the bulk material online sampling device can move between the blanking area and the detection port.

10. An online bulk material sampling method, which is performed by an online bulk material sampling device according to any one of claims 1 to 8, or an online detection system according to claim 9;

the online sampling method for the bulk materials comprises the following steps:

the telescopic rod is driven to extend out relative to the fixed frame until the material taking hopper is positioned in the blanking area, and the material taking hopper is kept in a material receiving state;

the telescopic rod is driven to retract relative to the fixed frame until the material taking hopper is positioned above the detection port, and the material taking hopper is kept in a material placing state.

Images