CN207019929U - A kind of sampling device - Google Patents

Abstract

The utility model discloses a kind of sampling device, including main piece-like tube and at least one from piece-like tube, connected between piece-like tube and main piece-like tube by latch assembly；Latch assembly includes locking female joint and locking pin end, and locking female joint is provided with locking slot, and locking pin end is provided with the locking key that can coordinate clamping with locking slot；Latch assembly also includes locking key can be prevented by the tight locking button deviate from locking slot.Sampling device provided by the utility model, pass through the setting of latch assembly, main piece-like tube can be made and from piece-like tube when descending skewer enters grain heap, the sampling device can integrally be realized counterclockwise and clockwise, and main piece-like tube and the junction from piece-like tube occur without loosening, it is effectively increased the depth selection of piece-like tube, improve downlink efficiency of the piece-like tube during sample, and then improve the reliability of piece-like tube connection and the service life of the sampling device, main piece-like tube and quickly it can be connected and dismantled from piece-like tube, save the total time of sample process.

Description

A kind of sampling device

Technical field

Sample apparatus field is the utility model is related to, more particularly to a kind of sampling device.

Background technology

At present, grain sampling pipe on the market is mostly common stainless steel bare tube, by simply weld repacking and Into.It is existing from piece-like tube during the deep layer sample of grain heap is descending, the junction of piece-like tube is limited by screw thread company, descending mistake In journey piece-like tube can only single direction rotation it is descending, or the grain grain of the principle of negative pressure by air pump, on one side the sucking-off mouth of pipe, while outside Moved downward under power effect.

However, when piece-like tube direction of rotation with it is descending when direction of rotation it is opposite when, the screw thread of piece-like tube junction will Loosening occurs, causes piece-like tube to come off and is embedded in grain heap.Meanwhile existing piece-like tube is simple in construction, sample reaches certain It is difficult to change the distribution of structure and active force in grain heap inside grain heap after depth, causes piece-like tube depth depth selection Limited, when reaching certain depth, piece-like tube would become hard to descending, cause sample time and effort consuming；Existing piece-like tube is to pass through Threaded connection, in deep layer sample, connecting tube is more, and connection often is used to tighten connection screw thread, it is necessary to expend many times, It is also required to spend more time to go to dismantle after piece-like tube is unscrewed when dismantling piece-like tube.

Meanwhile existing piece-like tube needs frequent dismounting, the mode of threaded connection is by frequently tightening and unscrewing it Abrasion occurs in the connection screw thread of piece-like tube afterwards, causes connection not close, leaks air during sample, causes sampling efficiency to decline very It can not extremely sample；Existing sample pipe surface is smooth, and with the increase of sample depth, grain bulk density increases in unit space Add, grain contacts air in formed short space with piece-like tube and further compressed, and forms the negative effect of vacuum suction Fruit, cause deep layer sample difficult, the sample cycle lengthens, and labor strength is big.

Therefore, the sample efficiency of sampling device how is improved, service life and reliability is improved, is those skilled in the art The technical issues that need to address at present.

Utility model content

The purpose of this utility model is to provide a kind of sampling device, and the sampling device makes skewer by the setting of locking device The sample pipe and can that can be turned clockwise in descending sample does counter-clockwise rotary motion, and is not in showing of coming off of piece-like tube As effectively improving sample speed, use reliability improves.

To achieve the above object, the utility model provides following technical scheme：

A kind of sampling device, including main piece-like tube and at least one from piece-like tube, it is described from piece-like tube and the main sample Connected between pipe by latch assembly；The latch assembly includes locking female joint and locking pin end, the locking female joint At least one locking slot is provided with, the locking pin end is provided with least one locking that can coordinate clamping with the locking slot Key；The latch assembly also includes the tight locking button that the locking key can be prevented by loosening abjection in the locking slot.

Preferably, the locking female joint is cylindrical, and the locking slot is L-shaped, and the locking slot is arranged at institute The inner peripheral portion of locking female joint is stated, the locking slot includes along the axially extending of the locking female joint and is available for the locking key With the tight locking button in axially directed axial direction part and the circumferential sections for being available for the locking key to be caught in, the axial direction part is available for described Locking key slides into the common portion that crosses of the axial direction part and the circumferential sections.

Preferably, the locking female joint is fixedly mounted on the tail end of the main piece-like tube, and the locking pin end is fixed Installed in described from one end of piece-like tube, described be equally provided with from the one end of piece-like tube away from the locking pin end can be with phase The adjacent locking female joint for coordinating clamping from the locking pin end of piece-like tube.

Preferably, the main piece-like tube and described it is equipped with least one hand of spiral identical from the peripheral part of piece-like tube Helicla flute.

Preferably, the cross section of the helicla flute is in circular arc or triangle.

Preferably, it is additionally provided with seal washer between the locking pin end and the locking female joint.

Preferably, in addition to can be through the suction sample component from piece-like tube and inside the main piece-like tube, the suction Sample component includes suction cylinder and at least one section inhales sample push rod, and the both ends for inhaling sample push rod are equipped with size identical external screw thread, The suction sample push rod is threadedly coupled with the suction cylinder；The suction cylinder is provided with sample suction port close to the side of the suction sample push rod, The sampling head of the main piece-like tube is radially provided with the sampling opening for being available for material to enter the suction cylinder.

Preferably, for installing the main piece-like tube of the tight locking button or described elastic portion being also equipped with from piece-like tube Part, the elastomeric element abut with the tight locking button, provide an active force for the tight locking button, and the elastomeric element can After the locking key is caught in the locking slot, by the tight locking button be pressed into the position concordant with the locking slot bottom end face with Prevent the locking key from loosening abjection from the locking slot.

Preferably, the main piece-like tube or described be additionally provided with from piece-like tube for installing the tight locking button are used to support The back-up ring of the elastomeric element, one end of the elastomeric element are connected on the back-up ring, and the other end is connected to the tight locking button On.

Preferably, the elastomeric element is spring.

Sampling device provided by the utility model, including main piece-like tube and at least one from piece-like tube, it is described from sample Connected between pipe and the main piece-like tube by latch assembly；The latch assembly includes locking female joint and locking pin end, The locking female joint is provided with least one locking slot, and the locking pin end, which is provided with, to coordinate clamping with the locking slot At least one locking key；The latch assembly also includes the lock that the locking key can be prevented by loosening abjection in the locking slot Link closely.The sampling device, by the setting of the latch assembly, main piece-like tube can be made and enter grain heap from piece-like tube in descending skewer When, the sampling device can integrally be realized counterclockwise and clockwise, and main piece-like tube and the junction from piece-like tube are not in Loosen and come off, be effectively increased the depth selection of piece-like tube, improve downlink efficiency of the piece-like tube during sample, and then improve The reliability of piece-like tube connection and the service life of the sampling device.In addition, main piece-like tube and can quickly connect from piece-like tube and Dismounting, the total time of sample process is saved, meanwhile, the locking female joint and the locking pin end also pass through the locking The setting of button, the cooperation fastness between joint is improved, reduce the labor intensity of sample, improve the mechanization journey of sample Degree.

In a preferred embodiment, the main piece-like tube and described it is equipped with the hand of spiral from the peripheral part of piece-like tube Identical helicla flute.Above-mentioned setting, the sampling device can be caused to adapt to more complicated closely grain layer environment, meanwhile, utilize The rotation of helicla flute, it can also effectively shorten the downgoing time of sample, improve sample efficiency.

Brief description of the drawings

, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work Under, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is a kind of configuration schematic diagram of embodiment of sampling device provided by the utility model；

Fig. 2 is a kind of assembling structure schematic diagram of embodiment of sampling device provided by the utility model；

Fig. 3 is the configuration schematic diagram of the latch assembly of sampling device provided by the utility model；

Fig. 4 is the assembling structure schematic diagram of the latch assembly of sampling device provided by the utility model；

Fig. 5 is the structural representation of the suction sample component of sampling device provided by the utility model；

Fig. 6 is the assembling structure schematic diagram of sampling device another kind embodiment provided by the utility model；

Wherein：The main piece-like tube helicla flute of the main piece-like tubes of 1-, 11-, 12- sampling openings, 13- sampling heads, 2- first lock mother and connect Head, 3- seal washers, 4- locking pin end, 41- locking keies, 5- tight locking buttons, 6- elastomeric elements, 7- are from piece-like tube, 71- from sample Pipe helicla flute, 72- back-up rings, 8- second lock female joint, 9- suction cylinders, 91- sample suction ports, 10- inhale sample push rod, 101- thread bush, 102- nuts.

Embodiment

Core of the present utility model is to provide a kind of sampling device, and the sampling device can avoid the phenomenon that piece-like tube comes off, Sample speed is effectively improved, use reliability and service life are significantly improved.

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made The every other embodiment obtained, belong to the scope of the utility model protection.

Fig. 1 to Fig. 6 is refer to, Fig. 1 is a kind of blast of embodiment of sampling device provided by the utility model Structural representation；Fig. 2 is a kind of assembling structure schematic diagram of embodiment of sampling device provided by the utility model；Figure 3 be the configuration schematic diagram of the latch assembly of sampling device provided by the utility model；Fig. 4 is provided by the utility model Sampling device latch assembly assembling structure schematic diagram；Fig. 5 is the suction sample group of sampling device provided by the utility model The structural representation of part；Fig. 6 is that the assembling structure of sampling device another kind embodiment provided by the utility model is shown It is intended to.

In this embodiment, sampling device includes main piece-like tube 1, at least one from piece-like tube 7 and latch assembly.

Wherein, connected between piece-like tube 7 and main piece-like tube 1 by latch assembly, the sampling head 13 of main piece-like tube 1 is in circle Taper, for inserting inside grain heap, when from the number of piece-like tube 7 for it is multiple when, it is adjacent from same using locking between piece-like tube 7 Component connects, and to increase the length of whole sampling device, and then is effectively increased the sample depth of the sampling device.

Specifically, latch assembly includes locking female joint and locking pin end 4, locking female joint is provided with least one lock Tight groove, locking pin end 4 are provided with least one locking key 41 that can coordinate clamping with locking slot.

Preferably, in order to ensure to lock female joint and lock the connective stability of pin end 4, if being provided with locking female joint Dry locking slot, and some locking slots are uniformly distributed in inside locking female joint, locking key is preferably equal with the number of locking slot, And locking key coordinates clamping one by one with locking slot.

Latch assembly also includes the tight locking button 5 that locking key 41 can be prevented by loosening abjection in locking slot, tight locking button 5 and locking Locking slot in female joint is engaged, and the number of teeth of tight locking button 5 is equal with the number for locking female joint internal locking groove, by locking key 41 After being caught in locking slot, tight locking button 5 can be pushed to position corresponding with locking slot, will under the active force of elastomeric element Tight locking button 5 is fixed on inside locking slot, and further locking key 41 is limited in locking slot, prevents locking key 41 from locking slot Loosen abjection.

More specifically, locking female joint is cylindrical, and locking slot is L-shaped, and locking slot is arranged at locking female joint Inner peripheral portion, locking slot include along the axially extending axial direction part for locking female joint and are available for the circumferential sections that locking key 41 is caught in, and lock The axial direction part of tight groove is available for locking key and tight locking button 5 locking the axially directed of female joint, and the circumferential sections of locking slot are available for locking Key 41 slides into the common portion that crosses of axial direction part and circumferential sections, in case locking key 41 is caught in the circumferential sections of locking slot, realizes lock The axial locking of tight female joint and locking pin end 4.

Further, locking pin end 4 is equally cylindrical, and one end of locking pin end 4 is circumferentially with some locking keies 41, The circumferential sections of locking slot are located at the one end of locking slot away from locking female joint, and locking key 41 under manual action, slide by locking key 41 Enter the axial direction part of locking slot, when slide into reach axial direction part and circumferential sections cross common portion when, manual rotation lock public access First 4 so that locking key 41 is transferred to the circumferential sections of locking slot.

Further, rotation lock links closely 5, the buckle teeth on tight locking button 5 is directed at the axial direction part of locking female joint internal locking groove, Elastomeric element 6, such as spring, active force under tight locking button 5 is coordinated with locking slot, the locking key locked on pin end 4 is blocked It is locked locking female joint locking slot circumferential sections in, locking pin end 4 is rotated in the circumferential.

Need exist for explanation, from the number of piece-like tube 7 should as needed the depth of sample and select, from piece-like tube 7 use as piece-like tube is extended, and can arbitrarily assemble.

The sampling device, by the setting of latch assembly, main piece-like tube and integrally common real from piece-like tube 7 can be enable Now counterclockwise and clockwise rotation, while loosening is occurred without, main piece-like tube and will not fall off from piece-like tube 7, be effectively increased skewer The depth selection of sample pipe, improve downlink efficiency of the piece-like tube during sample, so improve piece-like tube connection reliability and The service life of the sampling device.In addition, by the setting of latch assembly, main piece-like tube is realized and from the quick of piece-like tube 7 Connection and dismounting, the total time of sample process is saved, meanwhile, locking female joint and locking pin end 4 also pass through tight locking button 5 Set, improve the cooperation fastness between joint, reduce the labor intensity of sample, improve the mechanization degree of sample.

On the basis of the respective embodiments described above, locking female joint is fixedly mounted on the tail end of main piece-like tube 1, locks public access First 4 are fixedly mounted on from one end of piece-like tube 7, from piece-like tube 7 away from locking pin end 4 one end be equally provided with can with it is adjacent Coordinate the locking female joint of clamping from the locking pin end 4 of piece-like tube 7.

Certainly, locking female joint can also be fixedly mounted on from one end of piece-like tube 7, locking pin end 4 and be fixedly mounted on The tail end of main piece-like tube 1, being equally provided with from the one end of piece-like tube 7 away from locking pin end 4 can be with the adjacent lock from piece-like tube 7 Tight female joint coordinates the locking pin end 4 of clamping, meanwhile, tight locking button 5 should be engaged with locking the installation site of pin end 4.

On the basis of the respective embodiments described above, main piece-like tube 1 and the peripheral part from piece-like tube 7 are equipped with to lower recess simultaneously And the helicla flute of hand of spiral identical at least one.Above-mentioned setting, it is more complicated close can make it that the sampling device adapts to Grain layer environment, meanwhile, using the rotation of helicla flute, it can also effectively shorten the downgoing time of sample, improve sample efficiency.This In it should be noted that the hand of spiral of helicla flute can be left-handed, or dextrorotation.Meanwhile helicla flute can be one, Or it is a plurality of, it can specifically be set according to use demand.

Specifically, being provided with main piece-like tube helicla flute 11 on main piece-like tube 1, it is provided with from piece-like tube 7 from piece-like tube spiral shell Spin slot 71, in installation locking component, it shall be guaranteed that the main piece-like tube 1 after mating connection and the main piece-like tube spiral shell from piece-like tube 7 Spin slot 11 is identical with the hand of spiral from piece-like tube helicla flute 71, otherwise can influence the Impact direction of piece-like tube, influences sample effect Rate.

On the basis of the respective embodiments described above, the cross section of helicla flute is in circular arc, as shown in Fig. 2 certainly, helicla flute Cross section can also be triangular in shape, as shown in Figure 6.

On the basis of the respective embodiments described above, lock and be additionally provided with seal washer 3 between pin end 4 and locking female joint, Preferably rubber ring, seal washer 3 are placed on the bottom in locking female joint.

On the basis of the respective embodiments described above, in addition to can be through from the suction sample inside piece-like tube 7 and main piece-like tube 1 Component, inhaling sample component includes suction cylinder 9 and at least one section suction sample push rod 10, and the both ends for inhaling sample push rod 10 are equipped with size identical External screw thread, inhale sample push rod 10 and be threadedly coupled with suction cylinder 9；Suction cylinder 9 is provided with sample suction port 91 close to the side for inhaling sample push rod 10, main The sampling head 13 of piece-like tube 1 is radially provided with the sampling opening 12 for being available for material to enter suction cylinder 9.

Specifically, when with multiple suction sample push rods 10, can be connected between adjacent suction sample push rod 10 by thread bush 101 Connect, to change the whole length for inhaling sample component, certainly, the number for inhaling sample push rod 10 should be depending on the number from piece-like tube 7.

More specifically, suction cylinder 9 is boring, and there is a capping one end, and one end is provided with sample suction port without closure construction in capping 91 and the hole for being fixed with inhaling sample push rod 10, inhaling the both ends of sample push rod 10 all has external screw thread, and inhales sample push rod 10 and suction cylinder 9 Between, it is fixed together by the external screw thread on suction sample push rod 10 and the nut 102 on the hole of suction cylinder 9, two suctions The external screw thread for extending through thread bush 101 and inhaling the end of sample push rod 10 between sample push rod 10 realizes connection, inhales sample component and is placed on Main piece-like tube 1 and from the inside of piece-like tube 7；Main piece-like tube and extension are combined together from piece-like tube by latch assembly, are realized The extension of sampling device, inhale sample component and be embedded in inside piece-like tube, the drive by inhaling sample push rod 10, which moves up and down, realizes sample The opening and closing of mouth.

Above-mentioned setting causes the sampling device to include piece-like tube and inhales sample component, and piece-like tube includes main piece-like tube and from sample Pipe, main piece-like tube connects locking into an entirety with from piece-like tube by latch assembly, then will suction sample component to be put into this whole Internal portion, thus constitute the sampling device.

On the basis of the respective embodiments described above, also pacify for the main piece-like tube 1 of installation locking button 5 or from piece-like tube 7 Equipped with elastomeric element 6, elastomeric element 6 abuts with tight locking button 5, and elastomeric element 6 can be after locking key 41 be caught in locking slot, will Tight locking button 5 be pressed into the position concordant with locking slot bottom end face by locking key block it is locked in the circumferential sections of locking slot to prevent Locking key 41 loosens abjection from locking slot.Preferably, elastomeric element 6 can be spring, and the coefficient of elasticity of spring is high, cost It is low and easy for installation.

It is uniformly distributed and the L-shaped locking slot for the dextrorotation that is recessed specifically, at least there are two on the inner surface of locking female joint, Certainly, L-shaped locking slot left-handed can also be distributed, and the number of locking key 41 is preferably identical with the number of locking slot, locking key 41 Number can not be more than the number of locking slot, cause locking key 41 and locking slot not to assemble.

Specifically, being provided with the first locking female joint 2 on main piece-like tube 1, the second locking mother is installed from piece-like tube 7 and connect First 8, the first locking female joint 2 is identical with the structure of the second locking female joint 8.

As shown in Fig. 2 main piece-like tube 1 and first, which is locked after female joint 2 is installed, forms piece-like tube A, from piece-like tube 7 and locking Pin end 4, elastomeric element 6, back-up ring 72 and second lock female joint 8 and are provided with to form piece-like tube B.

On the basis of the respective embodiments described above, also set for the main piece-like tube 1 of installation locking button 5 or from piece-like tube 7 There is the back-up ring 72 for supporting elastomeric element 6, one end of elastomeric element 6 is connected on back-up ring 72, and the other end is connected to tight locking button 5 On.Specifically, back-up ring 72 can be endless metal back-up ring 72, main piece-like tube 1 is welded on or from piece-like tube 7.

On the basis of the respective embodiments described above, tight locking button 5 includes annular ring and some buckle teeth positioned at annular ring side, In buckle teeth is inserted into the axial direction part of locking slot and circumferential sections cross common point part, meanwhile, tight locking button 5 can be around from piece-like tube 7 center axis thereof, to facilitate rotation lock to link closely 5 so that tight locking button 5 is directed at the axial direction part of locking slot.

Specifically, the sampling device that the present embodiment is provided, main piece-like tube with from piece-like tube connect installation when, first give from skewer Tight locking button 5 on sample pipe applies certain power, and direction is towards the direction where elastomeric element 6, under external force, positioned at lock The elastic part to link closely between 5 and back-up ring 72 is compressed, and will be now aligned from the locking key 41 on the locking pin end 4 of piece-like tube L-shaped locking slot axial direction part inside first locking female joint 2, and lock female joint 2 along the axial direction part of L-shaped locking slot to first Internal slide, move to the axial direction part of L-shaped locking slot always and circumferential sections cross the bottommost of common point part, now plus The big thrust applied for connection, make the bottom squeeze seal washer 3 of locking pin end 4, seal washer 3 is produced deformation, directly The circumferential sections that locking key 41 and first on to locking pin end 4 locks the internal locking groove of female joint 2 coordinate and can do circumference During motion, stop the application of power on vertical direction, rotate tight locking button 5 and make L-shaped lock in buckle teeth alignment the first locking female joint 2 The axial direction part of tight groove, removes the power being applied on tight locking button 5, tight locking button 5 and L-shaped locking slot in the presence of elastomeric element 6 Axial direction part coordinates.Then, give locking pin end 4 to apply peripheral force, it is rotated, allow locking key and L-shaped locking slot Circumferential sections are fully mated, and now the buckle teeth under the effect of elastomeric element 6 on tight locking button 5 can be fully moved to the axle of L-shaped locking slot The bottommost for the common point that crossed to section and circumferential sections, so as to the locked circumferential sections in L-shaped locking slot by locking key 41 inflexibly Interior, connection locking device has just been completely fitted into together by this process, and state is as shown in figure 4, so just realize main sample Pipe and the connection from piece-like tube.

Afterwards, will inhale sample push rod 10 makes suction sample push rod 10 be connected with suction cylinder 9 by the screw thread and nut 102 of itself, and The connection of suction sample push rod 10 is extended it with thread bush 101, inhale the bottommost that piece-like tube is put into after sample component installs, inhale sample When component moves upwards, sampling opening can be opened, increase sampling opening, moving downward can make sampling opening close or reduce sample Mouthful.

After main piece-like tube, after piece-like tube, suction sample component all install：

When only main piece-like tube participates in sample, matched somebody with somebody by external device (ED) and the first locking female joint 2 on main piece-like tube Closing makes main piece-like tube rotate while moves downward the downward movement of realizing sample, and sampling head contacts grain heap and moved to During designated depth, outside rotating device is removed, pulls suction sample push rod 10 suction sample component is moved unlatching sampling opening upwards, and outside Sample is taken out by sample suction port 91 in the presence of portion's sample absorbing device, complete sampling；

When be connected with main piece-like tube carry out sample from piece-like tube when, can by external device (ED) with from first on piece-like tube Locking female joint 2 coordinates, and its entirety is rotated while moves downward the downward movement of realizing sample, when sampling head connects Touch after grain heap reaches designated depth and remove rotating device, be sampled using sample absorbing device, when needing to complete deeper, it is only necessary to Connect multiple from the i.e. achievable deep layer sample of piece-like tube；

After designated depth sampling is completed, the taking-up and dismounting of piece-like tube, when only main piece-like tube participates in sample, only need The first locking female joint 2 on external device (ED) and main piece-like tube, which coordinates, rotates while makees motion upwards, until main skewer Sample pipe out, just closes external device (ED) and unloads main piece-like tube completely in grain heap；When being connected with main piece-like tube from sample When pipe carries out sample, coordinated by external device (ED) with locking female joint 2 from first on piece-like tube, make main piece-like tube and from sample Pipe composition entirety rotate and meanwhile makees upwards motion, after from piece-like tube completely from grain heap out after, stopping external device (ED), Apply power of the direction towards elastomeric element 6 to from the tight locking button 5 on piece-like tube, elastomeric element 6 is produced certain compression and connect, now To connection installation operation when rotate opposite direction allow from piece-like tube, locking pin end 4 rotate, when can not rotate Tight locking button 5, the power on elastomeric element 6 are removed, is pulled outward from piece-like tube, makes the L in from piece-like tube along the first locking female joint 2 Shape locking slot axial direction part outward movment, completely disengaged until from piece-like tube and the first locking female joint 2, now back out and inhale sample push rod 10 and thread bush 101, when there are more to participate in sample from piece-like tube, take out and dismounting repeats the above steps and can repeatedly complete to take Go out and dismantlement work.

Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be and other The difference of embodiment, between each embodiment identical similar portion mutually referring to.

Sampling device provided by the utility model is described in detail above.Specific case pair used herein Principle and embodiment of the present utility model are set forth, and the explanation of above example is only intended to help and understands that this practicality is new The method and its core concept of type.It should be pointed out that for those skilled in the art, this practicality is not being departed from On the premise of new principle, some improvement and modification can also be carried out to the utility model, these are improved and modification also falls into this In the protection domain of utility model right requirement.

Claims (10)

1. a kind of sampling device, it is characterised in that described from sample including main piece-like tube (1) and at least one from piece-like tube (7) It is connected between pipe (7) and the main piece-like tube (1) by latch assembly；The latch assembly includes locking female joint and locking is public Joint (4), the locking female joint are provided with least one locking slot, and the locking pin end (4) is provided with can be with the lock Tight groove coordinates at least one locking key (41) of clamping；The latch assembly also includes the locking key (41) can be prevented by described The tight locking button (5) of abjection is loosened in locking slot.

2. sampling device according to claim 1, it is characterised in that the locking female joint is cylindrical, the locking Groove is L-shaped, and the locking slot is arranged at the inner peripheral portion of the locking female joint, and the locking slot includes female along the locking Joint axially extending is simultaneously available for the locking key and the tight locking button (5) in axially directed axial direction part and is available for the locking The circumferential sections that key (41) is caught in, the axial direction part are available for the locking key to slide into crossing for the axial direction part and the circumferential sections Common portion.

3. sampling device according to claim 2, it is characterised in that the locking female joint is fixedly mounted on the main skewer The tail end of sample pipe (1), the locking pin end (4) be fixedly mounted on it is described from one end of piece-like tube (7), it is described from piece-like tube (7) one end away from the locking pin end (4) is equally provided with and can matched somebody with somebody with adjacent from the locking pin end (4) of piece-like tube (7) Close the locking female joint of clamping.

4. sampling device according to claim 1, it is characterised in that the main piece-like tube (1) and described from piece-like tube (7) Peripheral part be equipped with least one hand of spiral identical helicla flute.

5. sampling device according to claim 4, it is characterised in that the cross section of the helicla flute is in circular arc or triangle Shape.

6. sampling device according to claim 1, it is characterised in that the locking pin end (4) connects with the locking mother Seal washer (3) is additionally provided between head.

7. sampling device according to claim 1, it is characterised in that also include can through it is described from piece-like tube (7) and The internal suction sample component of the main piece-like tube (1), the suction sample component includes suction cylinder (9) and at least one section inhales sample push rod (10), the both ends for inhaling sample push rod (10) are equipped with size identical external screw thread, the suction sample push rod (10) and the suction sample Cylinder (9) threaded connection；The suction cylinder (9) is provided with sample suction port (91), the main skewer close to the side of the suction sample push rod (10) The sampling head (13) of sample pipe (1) is radially provided with the sampling opening (12) for being available for material to enter the suction cylinder (9).

8. according to the sampling device described in claim 1 to 7 any one, it is characterised in that for installing the tight locking button (5) The main piece-like tube (1) or it is described be also equipped with elastomeric element (6) from piece-like tube (7), the elastomeric element (6) with it is described After tight locking button (5) abuts, and the elastomeric element (6) can be caught in the locking slot in the locking key (41), by the lock (5) press-in position concordant with the locking slot bottom end face link closely to prevent the locking key (41) pine from the locking slot Dynamic abjection.

9. sampling device according to claim 8, it is characterised in that for installing the main skewer of the tight locking button (5) Sample pipe (1) or the back-up ring (72) being additionally provided with from piece-like tube (7) for supporting the elastomeric element (6), the elastic portion One end of part (6) is connected on the back-up ring (72), and the other end is connected on the tight locking button (5).

10. sampling device according to claim 9, it is characterised in that the elastomeric element (6) is spring.