CN116609130A - Sampling device and sampling and separating machine - Google Patents

Abstract

The invention relates to the technical field of sampling, in particular to a sampling device and a sampling dividing machine, wherein the sampling device comprises a sampling head unit, a telescopic unit and a braking mechanism with a plurality of braking blocks, the outer side of a sampling pipe is provided with a plurality of clamping grooves which can be in one-to-one correspondence with the braking blocks, and the braking blocks are embedded into the clamping grooves when the sampling pipe is tightly held by the braking blocks; the telescopic unit comprises an inner frame, a telescopic belt is arranged on the inner frame, the telescopic belt is wrapped on the two driving rollers, and the sample sampling head unit is arranged on the inner frame in a sliding manner and is fixedly connected with one side of the telescopic belt; the fixed outer frame is arranged on the inner frame in a sliding way, and the other side of the telescopic belt is fixedly connected with the outer frame; and a telescopic driving assembly configured to drive the inner frame to be telescopic. The invention greatly reduces the times of tube replacement, greatly improves the overall efficiency of the lower tube, simultaneously prevents the brake mechanism from slipping to influence the tube feeding efficiency, further improves the overall efficiency of the lower tube, is easy to carry, and can not be carried to a granary because the overall height of the device is too high.

Description

Sampling device and sampling and separating machine

Technical Field

The invention relates to the technical field of sampling, in particular to a sampling device and a sampling sample separating machine.

Background

After the national reserved grains (such as corn, rice, wheat, soybean and the like) are stored for a certain time, the grains are usually sampled through a sampling tube of a sampling device, the sampled grains are required to be separated through a sample separating device, namely, the sampled grains are mixed, a final sample with a certain weight is extracted from the mixed grains, and whether the grains are abnormal or not is verified by detecting the impurity content, the water content and the volume weight of the final sample.

In the prior art, for example, in the patent document with publication number of CN115683746B, the sampling device drives the sampling head unit (mechanism) to descend through the lifting unit (mechanism) arranged to lower the pipe, after the lifting unit descends to the lowest (i.e. the lower part of one sampling pipe is at the limit position), the locking block of the locking mechanism is used to lock the sampling pipe, so that after the sampling pipe is separated from the sampling head unit (mechanism), the sampling head unit (mechanism) is lifted back to the highest point through the lifting unit, another sampling pipe is added to be in butt joint with the original sampling pipe, the pipe is lowered again, and the sampling pipe is repeatedly lowered, lifted back and added (hereinafter referred to as a pipe adding) in this way, thereby lowering the sampling pipe to the grain target depth.

However, in the prior art, on one hand, due to the limitation of the height from the top surface of the grain to the top of the grain bin, the overall height of the sampling device is limited, the stroke of the lifting unit is generally shorter, and the length of the sampling tube added each time is slightly equal to the stroke of the lifting unit (simply increasing the height of the equipment to increase the length of the sampling tube can cause difficulty in carrying the equipment to the grain bin), which can cause more times of adding the tube, and each time of adding the tube needs to take a certain time, thereby causing lower overall efficiency of the lower tube; on the other hand, the locking block and the sampling block are fixed in the circumferential direction by friction force, and the two sampling pipes are required to rotate and added during butt joint, so that the phenomenon of slipping easily occurs to cause difficult butt joint of the sampling pipes, the pipe adding efficiency is affected, and the overall efficiency of the lower pipe is further lower.

Disclosure of Invention

The invention aims to provide a sampling device and a sampling and separating machine, which are used for solving the technical problem of low overall efficiency of a lower pipe in the prior art.

The embodiment of the invention is realized by the following technical scheme:

the sampling device comprises a sampling head unit, a telescopic unit and a braking mechanism with a plurality of braking blocks, wherein the braking mechanism is configured to drive the braking blocks to move so as to hold a sampling pipe, a plurality of clamping grooves which can be in one-to-one correspondence with the braking blocks are arranged on the outer side of the sampling pipe, and the braking blocks are embedded into the clamping grooves when holding the sampling pipe tightly;

the telescoping unit includes:

the inner frame is provided with a telescopic belt, the telescopic belt is wrapped on the two driving rollers, and the sample sampling head unit is arranged on the inner frame in a sliding manner and is fixedly connected with one side of the telescopic belt;

the outer frame is fixedly arranged, the inner frame is arranged on the outer frame in a sliding way, and the other side of the telescopic belt is fixedly connected with the outer frame; and

and a telescopic driving assembly configured to drive the inner frame to be telescopic.

Optionally, the telescopic driving assembly comprises a telescopic driving component, a gear and a rack, wherein the rack is fixedly connected with the inner frame, the telescopic driving component is fixedly connected with the outer frame, and the rack is connected with the output end of the telescopic driving component and meshed with the rack.

Optionally, the racks and the gears are both provided with two racks, the two racks are respectively arranged on two sides of the inner frame, and the two gears are meshed with the two racks in a one-to-one correspondence manner.

Optionally, the telescopic driving component comprises a worm gear case, a transmission shaft, two worm gears, a worm and a telescopic driving element, wherein the two transmission shafts are arranged in the worm gear case in parallel in a rotating way, the two worm gears are respectively arranged on the two transmission shafts, and one ends of the two transmission shafts extend out of the worm gear case and are respectively connected with one gear; the worm is arranged in the worm gear case and meshed with the two worm gears respectively, the telescopic driving element is arranged on the worm gear case, and the output end of the telescopic driving element is connected with the worm.

Optionally, an inner tooth is arranged on the inner ring of the telescopic belt, and the sampling head unit is fixedly connected with a first toothed plate meshed with the inner tooth.

Optionally, the inner ring of the telescopic belt is provided with inner teeth, and the outer frame is fixedly connected with a second toothed plate meshed with the inner teeth.

Optionally, the brake mechanism further comprises a guide ring, the guide ring is configured to rotate around the axis of the guide ring, the brake blocks are circumferentially arranged along the inner side of the guide ring and can slide along the radial direction of the guide ring, the inner side of the guide ring is provided with a reducing groove which is propped against the brake blocks, and the reducing groove is configured to gradually squeeze the brake blocks in the rotation process of the guide ring so that the brake blocks are tightly held by the sampling tube and are embedded in the clamping groove.

Optionally, the guide ring is connected with drive unit, and drive unit includes stay cord and footboard, and one end of stay cord is connected with one place outside the guide ring, and the other end of stay cord is connected with the footboard to pulling the stay cord makes the guide ring rotate when stepping on the footboard.

Optionally, a first resetting component for resetting the guide ring is connected to one position outside the guide ring; the brake block is connected with a second reset component for resetting the brake block.

The invention also provides a sampling and sample separating machine, which comprises the sampling device.

The invention has at least the following advantages and beneficial effects:

1. because the outer frame is fixedly connected with the other side of the telescopic belt (namely, the outer frame is not relatively displaced relative to the telescopic belt, the telescopic belt and the driving roller can relatively move, when the telescopic driving assembly drives the inner frame to ascend, the telescopic belt is continuously close to the driving roller at the lower end of the outer frame, the telescopic belt is continuously close to the driving roller at the upper end of the sampling head unit, and the sampling head unit is fixedly connected with one side of the telescopic belt (namely, the sampling head unit is not relatively displaced relative to the telescopic belt, the inner frame is connected with the telescopic belt), the sampling head unit can continuously close to the driving roller at the upper end while ascending along with the inner frame, compared with the prior art, the double stroke is equivalent to the double stroke of the same time consumption, so that the length of each sampling pipe is conveniently increased, the times of pipe replacement can be greatly reduced under the condition that the sampling pipe is lowered to the same depth, and the overall efficiency of pipe discharging is greatly improved; in addition, the whole inner frame can be retracted while the purpose of increasing the length of the sampling tube is achieved, so that the device cannot be transported to a granary easily due to the fact that the whole height of the device is too high.

2. Through set up a plurality of draw-in grooves with the brake shoe one-to-one at the lateral wall of sampling tube, when the brake shoe is embraced and is tightly inserted the appearance, the brake shoe is embedded in the draw-in groove simultaneously, has restricted the circumference rotation of sampling tube, avoids appearing skidding the phenomenon and leads to the sampling tube difficulty of docking to avoided consequently influencing and added pipe efficiency, further improved the overall efficiency of lower pipe promptly.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a sampling device according to the present invention;

FIG. 2 is a schematic diagram of an assembled structure of a skewer unit and a telescoping unit;

FIG. 3 is a schematic view of an outer frame;

FIG. 4 is a schematic diagram of a second structure of the outer frame;

FIG. 5 is a schematic view of the inner frame;

FIG. 6 is a schematic diagram of a second configuration of the inner frame;

FIG. 7 is a front view of a telescopic belt;

fig. 8 is a schematic structural view of the skewer unit:

FIG. 9 is a schematic diagram of an assembled structure of a brake mechanism and a sampling tube;

FIG. 10 is a schematic view of the structure of a sampling tube;

FIG. 11 is a schematic structural view of the brake mechanism (with the cover and pedal hidden);

FIG. 12 is a schematic view of the structure of a guide ring;

FIG. 13 is a schematic view of a brake pad construction;

fig. 14 is a schematic structural diagram of a sampling device according to the present invention;

100-braking mechanism, 101-braking block, 102-guide ring, 1021-reducing groove, 103-driving part, 1031-pedal, 1032-stay cord, 104-first resetting part, 105-second resetting part, 106-stopper, 1061-first supporting pin, 1062-first roller, 107-second supporting pin, 108-second roller, 109-guide tube, 200-skewer tube, 201-clamping groove, 300-telescoping unit, 301-inner frame, 3011-guide rail, 302-telescoping belt, 3021-inner tooth, 303-driving roller, 304-outer frame, 3041-roller, 3042-pull rod, 305-telescoping driving assembly, 3051-gear, 3052-rack, 3053-worm gear box, 3054-transmission shaft, 3055-worm wheel, 3056-worm, 3057-telescoping driving element, 306-first toothed plate, 307-second toothed plate, 308-slide rail, 309-slide, 400-skewer unit, 401-slide, 500-base.

Detailed Description

Example 1

Referring to fig. 1, a sampling device includes a sampling head unit 400, a telescopic unit 300 and a brake mechanism 100.

The telescopic unit 300 comprises an outer frame 304, an inner frame 301 and a telescopic driving assembly 305 which are fixedly arranged, wherein the telescopic driving assembly 305 is configured to drive the inner frame 301 to stretch and retract, a telescopic belt 302 is arranged on the inner frame 301, the telescopic belt 302 is wrapped on two driving rollers 303, and the sampler head unit 400 is arranged on the inner frame 301 in a sliding manner and is fixedly connected with one side of the telescopic belt 302; the inner frame 301 is slidably disposed on the outer frame 304, and the other side of the telescopic belt 302 is fixedly connected to the outer frame 304.

It should be noted that, because the outer frame 304 is fixedly connected to the other side of the telescopic belt 302 (i.e. there is no relative displacement between the outer frame 304 and the telescopic belt 302 where the outer frame 304 is connected) and the telescopic belt 302 can move relatively between the telescopic belt 302 and the driving roller 303, when the telescopic driving assembly 305 drives the inner frame 301 to rise, the telescopic belt 302 is continuously close to the driving roller 303 at the lower end where the telescopic belt 302 is connected to the outer frame 304, the telescopic belt 302 is continuously close to the driving roller 303 at the upper end where the telescopic belt 302 is connected to the sampling head unit 400, and because the sampling head unit 400 is fixedly connected to one side of the telescopic belt 302 (i.e. there is no relative displacement between the sampling head unit 400 and the inner frame 301 where the telescopic belt 302 is connected), the sampling head unit 400 can follow the rising of the inner frame 301, and simultaneously can continuously close to the driving roller 303 at the upper end, so that the whole is integrally extended (as shown in fig. 14).

In practical application, the outer frame 304 is mounted on the base 500 of the sampler, the outer frame 304 includes two upright posts, the upper and lower ends of the upright posts can be connected by connecting members, the whole structure of a rectangular frame is formed, the specific structures of the upright posts and the connecting members are not limited, for example, the upright posts and the connecting members are welded by channel steel, i-steel, etc., and it should be noted that the connecting members avoid the sampler head unit 400. In order to make the structure stable, in this embodiment, the two sides of the upright posts are connected with the pull rod 3042, the pull rod 3042 is connected with the base 500, in order to facilitate quick installation, two positioning pins can be further arranged on the base 500, positioning holes are formed in the bottoms of the two upright posts, and the positioning pins are matched with the corresponding positioning holes to realize preliminary positioning of the outer frame 304.

The specific structure of the inner frame 301 is not limited, and may be formed by welding a channel steel or other steel structure. Referring to fig. 2-6, the inner frame 301 is slidably disposed on the outer frame 304, specifically, in this embodiment, two sides of the inner frame 301 are provided with guide rails 3011, two sides of the inner frame 304 are provided with rollers 3041 that cooperate with the guide rails 3011, and by limiting the positions of the inner frame 301 by the rollers 3041, the inner frame 301 is conveniently and smoothly stretched, and further, two or more rollers 3041 are disposed on each side, so that the guiding structure is stable. In other embodiments of the present invention, the inner frame 301 may be slidably connected to the outer frame 304 in other manners, such as a manner in which the sliding rails 308 cooperate with the sliding blocks 309, or a manner in which guide blocks are provided on the guide rods.

Referring to fig. 2 and 8, a sampling head unit 400 is slidably disposed on an inner frame 301, specifically, in this embodiment, the inner frame 301 is fixedly provided with a sliding rail 308, the sampling head unit 400 is fixedly connected with a sliding block 309 matched with the sliding rail 308, specifically, the sampling head unit 400 is fixedly connected with a sliding seat 401, the sliding block 309 is connected to the sliding seat 401 through a fastener, and the sliding of the sampling head is smoother due to the matching of the sliding block 309 and the sliding rail 308. Further, two or more slide rails 308 may be provided to make the structure more stable, and in other embodiments of the present invention, the sampling head unit 400 may also be slidably connected to the inner frame 301 in other manners, for example, in a manner that the guide rail 3011 cooperates with the roller 3041, and for example, in a manner that a guide block is penetrated on a guide rod.

Referring to fig. 2 and fig. 5-6, two driving rollers 303 are rotatably disposed at the upper and lower ends of the inner frame 301, a telescopic belt 302 is wrapped around the two driving rollers 303, a sample head unit 400 is fixedly connected to one side of the telescopic belt 302, an outer frame 304 is fixedly connected to the other side of the telescopic belt 302, and inner teeth 3021 (refer to fig. 7) are disposed in an inner ring of the telescopic belt 302 in this embodiment. On this basis, the mode of fixedly connecting the sampling head unit 400 and the telescopic belt 302 in this embodiment is as follows, and the sampling head unit 400 is fixedly connected with the first toothed plate 306 engaged with the inner gear, specifically, the first toothed plate 306 is connected with the sampling head unit 400 through a screw, it is easy to understand that the first toothed plate 306 compresses the telescopic belt 302 on the sampling head unit 400 at the same time, so as to ensure that the first toothed plate 306 is always engaged with the telescopic belt 302. The outer frame 304 is fixedly connected with the telescopic belt 302 in the following way, the outer frame 304 is fixedly connected with a second toothed plate 307 meshed with the inner gear, and similarly, the second toothed plate 307 is connected with the outer frame 304 through screws, and the second toothed plate 307 simultaneously compresses the telescopic belt 302 on the outer frame 304, so that the second toothed plate 307 is always meshed with the telescopic belt 302.

In other embodiments of the present invention, the fixing connection of the sampling head unit 400 to the telescopic belt 302 may take other forms, for example, a connecting member (such as a screw) may be inserted through both the telescopic belt 302 and the sampling head at the same time, and for example, a compressing member may provide a sufficient positive pressure to compress the telescopic belt 302 on the sampling head unit 400, that is, a friction force may be used to achieve the fixing connection between the two. Similarly, in other embodiments of the present invention, the outer frame 304 is fixedly connected to the telescopic belt 302 in other manners as described above.

Referring to fig. 2 and fig. 3-4, the telescopic driving assembly 305 is configured to drive the inner frame 301 to stretch out and draw back, specifically, the telescopic driving assembly 305 includes a telescopic driving component, a gear 3051 and a rack 3052, the rack 3052 is fixedly connected with the inner frame 301, the telescopic driving component is fixedly connected to the outer frame 304, the rack 3052 is connected with an output end of the telescopic driving component and is meshed with the rack 3052, and when in use, the rack 3052 is driven to stretch out and draw back by driving the gear 3051 through the driving component, so that the inner frame 301 is driven to stretch out and draw back. Further, the racks 3052 and the gears 3051 are both provided with two, the two racks 3052 are respectively arranged on two sides of the inner frame 301, the two gears 3051 and the two racks 3052 are meshed in a one-to-one correspondence manner, and thus the transmission structure is more stable. In other embodiments of the present invention, the inner frame 301 may be driven in other manners, such as by a ball screw to drive the inner frame 301 to expand and contract.

In this embodiment, the telescopic driving component includes a worm case 3053, a driving shaft 3054, two worm wheels 3055, a worm 3056 and a telescopic driving element 3057, the two driving shafts 3054 are arranged in the worm case 3053 in parallel in a rotating manner, the two worm wheels 3055 are separately arranged on the two driving shafts 3054, one ends of the two driving shafts 3054 extend out of the worm case 3053 and are respectively connected with one gear 3051, namely, when the worm wheels 3055 rotate, the gears 3051 on the same driving shaft 3054 can be driven to rotate; the worm 3056 is disposed in the worm case 3053 and is engaged with the two worm wheels 3055, the telescopic driving element 3057 is mounted on the worm case 3053, and the output end of the telescopic driving element 3057 is connected with the worm 3056, and the telescopic driving element 3057 may be a motor, a hydraulic motor, or the like, and it is easy to understand that the worm wheels 3055 and the worm 3056 are a reduction mechanism, i.e. the output rotation speed of the telescopic driving element 3057 is reduced and then finally acts on the gear 3051 connected with the transmission shaft 3054.

In other embodiments of the invention, the telescoping drive assembly may take other forms, such as replacing two worm gears 3055 with pulleys that are connected by a belt, eliminating worm 3056, and telescoping drive element 3057 acting on one of the pulleys after being decelerated by other deceleration mechanisms.

Referring to fig. 8, the sampling head unit 400 of this embodiment is the same as the prior art, including sampling box, hollow bull stick, connector, adapter and rotation drive assembly, hollow bull stick rotates the setting and samples the incasement, and the connector is connected with the lower extreme of hollow bull stick, and the connector can adopt the connected mode that prior art provided with the concrete connected mode of hollow bull stick, and the connector is the same with prior art effect, is connected with sampling pipe 200 through the screw thread, and adapter fixed connection is in the top of sampling box, rotates drive assembly and hollow bull stick transmission to drive hollow bull stick and rotate.

Referring to fig. 9-11, the brake mechanism 100 of the present embodiment has a plurality of brake pads 101, and the brake mechanism 100 is configured to drive the brake pads 101 to move so as to hold the sampling tube 200, and a plurality of clamping grooves 201 which can be in one-to-one correspondence with the brake pads 101 are provided on the outer side of the sampling tube 200 (it should be noted that the one-to-one correspondence should not limit the number of the clamping grooves 201 to be equal to the number of the brake pads 101, but it should be understood that, for example, three of the clamping grooves 201 may be provided, or more, only three of the clamping grooves may be provided corresponding to the brake pads 101), and the brake mechanism 100 is configured to drive the brake pads 101 to move so as to hold the sampling tube 200, and the brake pads 101 are embedded in the clamping grooves 201 when holding the sampling tube 200.

In some embodiments, the manner in which brake mechanism 100 drives brake pad 101 may be as provided by the prior art referenced in the background, or as provided by other prior art techniques.

In this embodiment, the brake mechanism 100 further includes a guide ring 102, the guide ring 102 is configured to rotate around an axis thereof, and in this embodiment, three or more brake pads 101 are provided, and in other embodiments, two or more brake pads 101 are disposed circumferentially along an inner side of the guide ring 102 and can slide radially along the guide ring 102, a reducing groove 1021 (please refer to fig. 12) abutting against the brake pads 101 is provided on an inner side of the guide ring 102, and the reducing groove 1021 is configured to gradually squeeze the brake pads 101 during rotation of the guide ring 102, so that the brake pads 101 hold the sampling tube 200 tightly and are embedded in the clamping groove 201, that is, when a new sampling tube 200 is added, the reducing groove 1021 continuously squeezes the brake pads 101 to the sampling tube 200 by rotating the guide ring 102 until the brake pads 101 clamp the original sampling tube 200 (that is, the sampling tube 200 is already embedded in the grain) and is embedded in the clamping groove 201 on the sampling tube 200, thereby achieving the purpose of braking the sampling tube 200 that is embedded in the grain.

In practice, the brake mechanism 100 is mounted on a lock box, which includes a box body and a box cover, and the lock box is fixed to the base 500 of the sampler and the sample divider by fasteners (e.g., screws).

The inner side of the guide ring 102 in this embodiment is fixedly provided (the guide tube 109 is fixedly connected with the box, for example, welded or integrally formed) with the guide tube 109 for positioning the sampling tube 200, specifically, the inner diameter of the guide tube 109 is slightly larger than the outer diameter of the sampling tube, so that the positioning of the sampling tube 200 is facilitated while the lower tube is not affected.

The specific installation mode of the guide ring 102 in this embodiment is as follows, and a plurality of limiting members 106 are circumferentially arranged on the outer side of the guide ring 102, four limiting members 106 in this embodiment are provided, and three or more than four limiting members may be provided in other embodiments. The limiting member 106 is provided with a limiting groove matched with the side edge of the guide ring 102, and the limiting groove can support the guide ring 102 on one hand and limit the radial position of the guide ring 102 on the other hand. Further, the limiting member 106 of this embodiment includes a first supporting pin 1061 and a first roller 1062, one end of the first pin is disposed on the bottom of the case body in a penetrating manner, the other end of the first pin is disposed on the case cover in a penetrating manner, the first roller 1062 is rotatably sleeved on the supporting pin, the limiting groove is annular and disposed on the side wall of the first roller 1062, and thus, the limiting groove is disposed, so that friction between the guide ring 102 and the limiting member 106 is rolling friction, friction can be reduced, and rotation of the guide ring 102 is smoother.

Further, referring to fig. 13, a mounting groove is formed on a side of the brake pad 101 close to the reducing groove 1021, and a second roller 108 that abuts against the reducing groove 1021 is disposed in the mounting groove, so that friction between the guide ring 102 and the brake pad 101 is rolling friction, and smooth rotation of the guide ring 102 is further facilitated.

In other embodiments of the present invention, the guide ring 102 may be installed in other manners, for example, the limiting member 106 is configured as an arc-shaped block, an arc-shaped chute is disposed on the arc-shaped block, the edge of the guide ring 102 is disposed in the arc-shaped chute, and the arc-shaped blocks limit the position of the guide ring 102 together, so that the guide ring 102 rotates in the arc-shaped chute of the arc-shaped blocks when rotating.

In this embodiment, the guide ring 102 is connected with the driving component 103, the driving component 103 includes a pull rope 1032 and a pedal 1031, one end of the pull rope 1032 is connected with one part of the outer side of the guide ring 102, the other end of the pull rope 1032 is connected with the pedal 1031, so that when the pedal 1031 is pressed down, the pull rope is pulled to rotate the guide ring 102, the pedal 1031 is fixed on the base 500 of the sampler, the pedal 1031 can be designed in the prior art cited in the background art, and other modes capable of pulling the pull rope 1032 by pressing down the pedal 1031 can be also designed.

In practical applications, the pull rope 1032 has a guiding support point on one side of the case, i.e. a guiding groove is provided on one side of the case, the pull rope 1032 passes through the guiding groove, and in addition, a section of the pull rope 1032 is preferably perpendicular to the radial direction of the guiding ring 102 between the guiding support point and the position where the pull rope 1032 is connected to the guiding ring 102, even if the pull rope 1032 pulls the guiding ring 102, the guiding ring 102 is stressed tangentially, so as to facilitate the rotation of the guiding ring 102.

In other embodiments of the present invention, the driving manner of the guide ring 102 may be other manners, for example, driving by a gear and rack manner, that is, a section of teeth may be disposed on the outer side of the guide ring 102, a slidable rack may be disposed in the case, and the guide ring 102 may be driven to rotate by movement of the rack; in another embodiment, the manual driving may be performed, for example, a shift lever may be disposed at one position of the guide ring 102, an arc slot with the guide ring 102 as a center of a circle is disposed on the case cover, and the shift lever may be rotated in the arc slot to drive the guide ring 102 to rotate.

On the basis that the guide ring 102 provided in this embodiment drives the guide ring 102 to rotate by matching the pedal 1031 with the pull rope 1032, a first reset component 104 for resetting the guide ring 102 is connected to one position on the outer side of the guide ring 102, specifically, the first reset component 104 is a spring, hooks can be arranged at two ends of the spring, a first connecting column is arranged at one position on the outer side of the guide ring 102, a second connecting column is arranged in the box body close to the first connecting column, one end of the first reset component 104 is hung on the first connecting column through one end of the hook, the other end of the first reset component 104 is hung on the second connecting column through the hook, and after the pedal 1031 is released, the guide ring 102 can rotate under the action of the first reset component 104, so that the initial state is restored. In other embodiments of the present invention, first reset element 104 may also take the form of a piston as provided in the prior art.

Further, in the present embodiment, the brake pad 101 is connected with the second restoring member 105 for restoring the brake pad, the second restoring member 105 is also a spring, it is easy to understand that, in order to make the structure stable, one second restoring member 105 may be disposed at both ends of the brake pad 101, one end of the second restoring member 105 is fixedly connected to the brake pad 101, the other end of the second restoring member 105 is fixedly connected to the outer side of the guide tube 109, after the pedal 1031 is released, the guide ring 102 is restored, the reducing groove 1021 does not press the brake pad 101 any more, and then the brake pad 101 is restored under the action of the second restoring member 105. It will be readily appreciated that in other embodiments, without the guide tube 109, a connection block may be provided within the housing that is fixedly connected to the second restoring member 105. Furthermore, in other embodiments of the present invention, second restoring member 105 may also take the form of a piston.

Example two

The embodiment provides a sampling sample separating machine, including the sampling device that embodiment one provided, still include the branch appearance device, divide the appearance device can be the same with prior art, divide the feed inlet of appearance device to be connected with the transfer pipe through the hose.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The sampling device comprises a sampling head unit (400), a telescopic unit (300) and a braking mechanism (100) with a plurality of braking blocks (101), wherein the braking mechanism (100) is configured to drive the braking blocks (101) to move so as to clamp a sampling pipe (200), and the sampling device is characterized in that a plurality of clamping grooves (201) which can be in one-to-one correspondence with the braking blocks (101) are formed in the outer side of the sampling pipe (200), and the braking blocks (101) are embedded into the clamping grooves (201) when clamping the sampling pipe (200);

the telescopic unit (300) comprises:

the inner frame (301), the inner frame (301) is provided with a telescopic belt (302), the telescopic belt (302) is wrapped on two driving rollers (303), and the sampling head unit (400) is arranged on the inner frame (301) in a sliding manner and is fixedly connected with one side of the telescopic belt (302);

the outer frame (304) is fixedly arranged, the inner frame (301) is arranged on the outer frame (304) in a sliding way, and the other side of the telescopic belt (302) is fixedly connected with the outer frame (304); and

and a telescopic driving assembly (305), wherein the telescopic driving assembly (305) is configured to drive the inner frame (301) to stretch and retract.

2. The sampling device according to claim 1, wherein the telescopic drive assembly (305) comprises a telescopic drive component, a gear (3051) and a rack (3052), the rack (3052) is fixedly connected with the inner frame (301), the telescopic drive component is fixedly connected to the outer frame (304), and the rack (3052) is connected with the output end of the telescopic drive component and is meshed with the rack (3052).

3. The sampling device according to claim 2, wherein two racks (3052) and two gears (3051) are respectively arranged, the two racks (3052) are respectively arranged at two sides of the inner frame (301), and the two gears (3051) are meshed with the two racks (3052) in a one-to-one correspondence manner.

4. The sampling device according to claim 3, wherein the telescopic driving means comprises a worm gear case (3053), a driving shaft (3054), two worm wheels (3055), a worm (3056) and a telescopic driving element (3057), the two driving shafts (3054) are rotatably arranged in the worm gear case (3053) in parallel, the two worm wheels (3055) are arranged on the two driving shafts (3054) separately, and one ends of the two driving shafts (3054) extend out of the worm gear case (3053) and are respectively connected with one gear (3051); the worm (3056) is arranged in the worm gear case (3053) and is meshed with the two worm gears (3055) respectively, the telescopic driving element (3057) is arranged on the worm gear case (3053), and the output end of the telescopic driving element is connected with the worm (3056).

5. The sampling device according to claim 1, characterized in that the inner ring of the telescopic belt (302) is provided with inner teeth (3021), and the sampling head unit (400) is fixedly connected with a first toothed plate (306) meshed with the inner teeth.

6. The sampling device according to claim 1, characterized in that the inner ring of the telescopic belt (302) is provided with inner teeth (3021), and the outer frame (304) is fixedly connected with a second toothed plate (307) meshed with the inner teeth.

7. The skewing device according to any of claims 1-6, characterized in that the brake mechanism (100) further comprises a guide ring (102), the guide ring (102) being configured to rotate about its axis, the brake pads (101) being circumferentially arranged along the inner side of the guide ring (102) and being slidable in the radial direction of the guide ring (102), the inner side of the guide ring (102) being provided with a reducing groove (1021) against the brake pads (101), the reducing groove (1021) being configured to gradually squeeze the brake pads (101) during rotation of the guide ring (102) so that the brake pads (101) hug the skewer tube (200) and are embedded in the clamping groove (201).

8. The sampling device according to claim 7, wherein the guide ring (102) is connected with a driving part (103), the driving part (103) comprises a pull rope (1032) and a pedal (1031), one end of the pull rope (1032) is connected with one outside of the guide ring (102), and the other end of the pull rope (1032) is connected with the pedal (1031) so as to pull the pull rope to rotate the guide ring (102) when the pedal (1031) is pressed down.

9. The sampling device according to claim 8, characterized in that a first resetting member (104) for resetting the guide ring (102) is connected to one outside thereof; the brake block (101) is connected with a second reset component (105) for resetting the brake block.

10. A sampler comprising a sampler device according to any one of claims 1 to 9.