CN113340670A

CN113340670A - Sampling device for chemical material experiments convenient to contrast

Info

Publication number: CN113340670A
Application number: CN202110787399.2A
Authority: CN
Inventors: 刘国栋
Original assignee: Zhifu Shanghai Technology Co ltd
Current assignee: Qingdao Jinniu Oil Technology Co ltd
Priority date: 2021-07-13
Filing date: 2021-07-13
Publication date: 2021-09-03
Anticipated expiration: 2041-07-13
Also published as: CN113340670B

Abstract

The invention discloses a sampling device for chemical material experiments, which is convenient for comparison and comprises a first sampling mechanism, a second sampling mechanism and a connecting and positioning device. According to the invention, the first sampling mechanism and the second sampling mechanism are arranged and are connected through the connecting and positioning device, so that two different sampling devices can be combined into a whole, not only is rapid comparison convenient to carry out, but also the space is saved, and the operation and the use are convenient; through having set up connection positioner, this coupling mechanism one, coupling mechanism two can be respectively in adjusting slide one, the two slides of regulation slide, make sampling mechanism one, sampling mechanism two can carry out the slip regulation position, make things convenient for sampling mechanism one, sampling mechanism two to carry out independent sample work, easy operation is convenient, and the index structure that sets up simultaneously corresponds the scale mark, has improved sampling mechanism one, sampling mechanism two accuracy of comparing numerical value.

Description

Sampling device for chemical material experiments convenient to contrast

Technical Field

The invention relates to the relevant field of experimental equipment, in particular to a sampling device for a chemical material experiment, which is convenient for comparison.

Background

Chemistry is a natural science, which mainly studies the composition, properties, structure and change rule of substances at molecular and atomic level to create new substances (molecules which do not exist in nature). Different from the physical and nuclear physics of particles with smaller research scale, the physical structure and chemical bond of atoms, molecules and ions (groups) and the interaction of intermolecular force and the like in chemical research are in the scale closest to the macroscopic scale in the microscopic world, so the natural laws of the atoms, the molecules and the ions are most closely related to the physical and chemical properties of substances and materials in the macroscopic world where people live. As an important bridge to communicate the micro and macro physical world, chemistry is one of the major methods and means for human understanding and improvement of the physical world.

At the in-process of chemistry experiment, need carry out sample analysis to chemical material through sampling device, and different chemical material, then need use sampling device not simultaneously to take a sample, owing to need a plurality of sampling device sample the back simultaneously, and the parallel is placed with the angle, just can contrast, such mode trouble very, and cause the error, influence the accuracy of contrast.

Disclosure of Invention

Therefore, in order to solve the above-mentioned disadvantages, the present invention provides a sampling device for chemical material experiments, which is convenient for comparison.

The invention is realized in such a way that a sampling device for chemical material experiments convenient for comparison is constructed, and the sampling device comprises a first sampling mechanism, a second sampling mechanism and a connecting and positioning device, wherein the first sampling mechanism and the second sampling mechanism are arranged in bilateral symmetry and are connected with the connecting and positioning device, the first sampling mechanism comprises a sampling cylinder, a cylinder cover, a sampling head, a push rod, a rubber plug and a handle, the cylinder cover is arranged at the upper end of the sampling cylinder, the sampling head is arranged at the bottom of the sampling cylinder, the push rod penetrates through the cylinder cover and extends into the sampling cylinder, the rubber plug is arranged in the sampling cylinder and is connected with one end of the push rod extending into the sampling cylinder, and the push rod is arranged at one end outside the cylinder cover and is provided with the handle.

Preferably, connect positioner including fixed body frame, handle, regulation slide one, regulation slide two, coupling mechanism one, coupling mechanism two, regulation slide three and index structure, fixed body frame top is provided with the handle, be provided with respectively on the fixed body frame left and right sides face and adjust slide one, regulation slide two, coupling mechanism one, coupling mechanism two respectively with adjust slide one, adjust two inboard sliding connection of slide to both cup joint with the sampler barrel of sampling mechanism one, sampling mechanism two respectively mutually, be provided with on the terminal surface before the fixed body frame and adjust slide three, index structure and the three inboard sliding connection of regulation slide.

Preferably, the first connecting mechanism comprises a first positioning sleeve, a first locking bolt, a first connecting slide block and a second locking bolt, the first positioning sleeve is sleeved on a sampling cylinder of the first sampling mechanism and locked and fixed through the first locking bolt arranged on one side of the first positioning sleeve, the first connecting slide block is connected on one side of the first relative locking bolt of the first positioning sleeve, and the first connecting slide block is connected with the inner side of the first adjusting slide way and locked and positioned through the second locking bolt arranged on the first connecting slide block.

Preferably, coupling mechanism two includes position sleeve two, latch bolt three, link block two and latch bolt four, cup joint on position sleeve two and the sampling tube of sampling mechanism two to it is fixed to lock through the latch bolt three that sets up on position sleeve two one side, be connected with link block two on the position sleeve two relative latch bolt three one side, link block two is last to install latch bolt four, link block two with adjust two inboard sliding connection of slide to fix a position through four locks of latch bolt locking.

Preferably, the index structure includes draw runner, lower draw runner, index one, index two, latch bolt five, latch bolt six and latch bolt seven, draw runner and lower draw runner longitudinal symmetry set up to both rear ends all with adjust three inboard sliding connection of slide, index one is installed to the draw runner right-hand member, install index two on the draw runner left end down, draw runner and lower draw runner rear end are respectively through latch bolt five, latch bolt six and adjust three inboard locking location of slide, it is provided with latch bolt seven to go up the draw runner upper end, and through latch bolt seven and lower draw runner locking location.

Preferably, the first sampling mechanism and the second sampling mechanism are both of the same structure, and sampling cylinders of the first sampling mechanism and the second sampling mechanism are both transparent.

Preferably, the diameter of the cylinder cover is larger than that of the sampling cylinder.

Preferably, scale marks are arranged on the three sides of the adjusting slide way at the front end of the fixed main frame.

Preferably, after the upper sliding strip and the lower sliding strip are connected into a whole, the first index and the second index are arranged in parallel and symmetrically left and right.

Preferably, threaded holes are formed in the upper sliding strip and the lower sliding strip, and the threaded holes in the upper sliding strip and the threaded holes in the lower sliding strip are arranged in an up-and-down symmetrical mode.

The invention has the following advantages: the invention provides a sampling device for chemical material experiments, which is convenient to compare by improvement and has the following improvements compared with the same type of equipment:

the method has the advantages that: according to the sampling device for the chemical material experiment, which is convenient to compare, the sampling mechanism I and the sampling mechanism II are arranged and are connected through the connecting and positioning device, so that two different sampling devices can be combined into a whole, not only is the rapid comparison convenient to carry out, but also the space is saved, and the operation and the use are convenient.

The method has the advantages that: according to the sampling device for the chemical material experiment, which is convenient to compare, the first connecting mechanism and the second connecting mechanism can respectively slide on the first adjusting slide way and the second adjusting slide way through the connecting and positioning device, so that the first sampling mechanism and the second sampling mechanism can slide to adjust positions, the first sampling mechanism and the second sampling mechanism can conveniently and independently sample, the operation is simple and convenient, and meanwhile, the set index structure corresponds to the scale marks, so that the accuracy of the comparison numerical value of the first sampling mechanism and the second sampling mechanism is improved.

The method has the advantages that: according to the sampling device for the chemical material experiment, which is convenient to compare, the first connecting mechanism and the second connecting mechanism are arranged and can be respectively connected with the first sampling mechanism and the second sampling mechanism, so that the sampling device can slide in the first adjusting slide way and the second adjusting slide way and then can adjust the position, and the first sampling mechanism or the second sampling mechanism can independently perform sampling operation, so that the first sampling mechanism and the second sampling mechanism cannot mutually influence the sampling operation, the sampling is convenient and rapid, and the comparison operation is convenient and rapid after the positions are adjusted to be parallel.

The advantages are that: according to the sampling device for the chemical material experiment, which is convenient to compare, the index structure is arranged, the upper sliding strip and the lower sliding strip can slide in the adjusting slide way III, the set index I and the set index II can correspond to the corresponding scale marks, the comparison accuracy of the sampling mechanism I and the sampling mechanism II is ensured, and meanwhile, the upper sliding strip and the lower sliding strip can separately slide to adjust positions, so that when the sampling mechanism I or the sampling mechanism II is adjusted at different positions, the numerical value is better determined.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a sampling mechanism according to the present invention;

FIG. 3 is a schematic view of the connection positioning device of the present invention;

FIG. 4 is a schematic view of the left side structure of the fixing main frame of the present invention;

FIG. 5 is a schematic view of a first embodiment of the coupling mechanism of the present invention;

FIG. 6 is a schematic structural view of a second connecting mechanism of the present invention;

FIG. 7 is a schematic diagram of the structure of the index of the present invention;

FIG. 8 is a schematic view of the upper and lower slides of the present invention separated.

Wherein: a sampling mechanism I-1, a sampling mechanism II-2, a connecting and positioning device-3, a sampling cylinder-11, a cylinder cover-12, a sampling head-13, a push rod-14, a rubber plug-15, a handle-16, a fixing main frame-31, a lifting handle-32, an adjusting slideway I-33, an adjusting slideway II-34, a connecting mechanism I-35, a connecting mechanism II-36, an adjusting slideway III-37, an index structure-38, a positioning sleeve I-351, a locking bolt I-352, a connecting slide block I-353, a locking bolt II-354, a positioning sleeve II-361, a locking bolt III-362, a connecting slide block II-363, a locking bolt IV-364, an upper slide strip-381, a lower slide strip-382, an index I-383, an index II-384, a positioning sleeve II-361, a locking bolt III-362, a connecting slide block II-363, a locking bolt III-364, an upper slide strip-381, a lower slide strip-382, an index I-383, an index II-384, a positioning sleeve II-354, a positioning sleeve II-11, a sliding sleeve II-13, a push rod-36, a rubber plug structure, a rubber plug I-37, a rubber plug I-17, a rubber plug structure, a rubber plug structure, Five-385 parts of locking bolt, six-386 parts of locking bolt, seven-387 parts of locking bolt, 301 parts of graduation line and 302 parts of threaded hole.

Detailed Description

The present invention will be described in detail below with reference to fig. 1 to 8, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

Referring to fig. 1, the sampling device for chemical material experiments, which is provided by the invention and is convenient to compare, comprises a first sampling mechanism 1, a second sampling mechanism 2 and a connecting and positioning device 3, wherein the first sampling mechanism 1 and the second sampling mechanism 2 are arranged in a left-right symmetrical manner and are connected with the connecting and positioning device 3, the first sampling mechanism 1 and the second sampling mechanism 2 are of the same structure, and sampling cylinders 11 of the first sampling mechanism 1 and the second sampling mechanism 2 are transparent, so that the comparison is convenient and the comparison accuracy is improved.

Referring to fig. 2, the sampling device for chemical material experiments is provided by the invention through improvement, a sampling mechanism 1 includes a sampling cylinder 11, a cylinder cover 12, a sampling head 13, a pushing rod 14, a rubber plug 15 and a handle 16, the cylinder cover 12 is installed at the upper end of the sampling cylinder 11, the sampling head 13 is installed at the bottom of the sampling cylinder 11, the pushing rod 14 penetrates through the cylinder cover 12 and extends into the sampling cylinder 11, the rubber plug 15 is installed inside the sampling cylinder 11 and is connected with one end of the pushing rod 14 extending into the sampling cylinder 11, the handle 16 is installed at one end of the pushing rod 14, which is located at the outer side of the cylinder cover 12, the diameter of the cylinder cover 12 is larger than that of the sampling cylinder 11, so that after the connecting mechanism 35 and the connecting mechanism 36 are sleeved on the sampling cylinder 1, a blocking can be provided by the cylinder cover 12, and the dropping can be prevented, and after the locking by a locking bolt 352 and a locking bolt 364, the stability of connection is improved.

Referring to fig. 3-4, the invention provides a sampling device for chemical material experiments, which is convenient for comparison through improvement, the connection positioning device 3 includes a fixing main frame 31, a handle 32, a first adjusting slideway 33, a second adjusting slideway 34, a first connecting mechanism 35, a second connecting mechanism 36, a third adjusting slideway 37 and an index structure 38, the handle 32 is arranged on the top of the fixing main frame 31, the first adjusting slideway 33 and the second adjusting slideway 34 are respectively arranged on the left and right side surfaces of the fixing main frame 31, the first connecting mechanism 35 and the second connecting mechanism 36 are respectively connected with the inner sides of the first adjusting slideway 33 and the second adjusting slideway 34 in a sliding manner, and are respectively sleeved with the sampling cylinders 11 of the first sampling mechanism 1 and the second sampling mechanism 2, the third adjusting slideway 37 is arranged on the front end surface of the fixing main frame 31, the index structure 38 is connected with the inner side of the third adjusting slideway 37 in a sliding manner, scale lines 301 are arranged on both sides of the third adjusting slideway 37 at the front end of the fixing main frame 31, the numerical value is accurately determined by corresponding the index one 383 and the index two 384.

Referring to fig. 5, the present invention provides, by way of improvement, a sampling device for chemical material experiments, which is convenient for comparison, wherein the connection mechanism one 35 includes a positioning sleeve one 351, a locking bolt one 352, a connection slide block one 353 and a locking bolt two 354, the positioning sleeve one 351 is sleeved on the sampling cylinder 11 of the sampling mechanism one 1 and is locked and fixed by the locking bolt one 352 arranged on one side of the positioning sleeve one 351, the connection slide block one 353 is connected on one side of the positioning sleeve one 351, which is opposite to the locking bolt one 352, the connection slide block one 353 is slidably connected with the inner side of the adjustment slide way one 33, and is locked and positioned by the locking bolt two 354 arranged on the connection slide block one 353.

Referring to fig. 6, the present invention provides a sampling device for chemical material experiments, which is convenient for comparison through improvement, wherein the second connecting mechanism 36 includes a second positioning sleeve 361, a third locking bolt 362, a second connecting slider 363 and a fourth locking bolt 364, the second positioning sleeve 361 is sleeved on the sampling tube 11 of the second sampling mechanism 2 and is locked and fixed by the third locking bolt 362 arranged on one side of the second positioning sleeve 361, the second connecting slider 363 is connected on one side of the second positioning sleeve 361 opposite to the third locking bolt 362, the fourth locking bolt 364 is arranged on the second connecting slider 363, the second connecting slider 363 is slidably connected with the inner side of the second adjusting slide way 34 and is locked and positioned by the fourth locking bolt 364.

Referring to fig. 7-8, the invention provides a sampling device for chemical material experiments, which is convenient for comparison, by improvement, an index structure 38 includes an upper slide 381, a lower slide 382, an index one 383, an index two 384, a locking bolt five 385, a locking bolt six 386 and a locking bolt seven 387, the upper slide 381 and the lower slide 382 are arranged in a vertically symmetrical manner, and the rear ends of the upper slide 381 and the lower slide 382 are slidably connected with the inner side of a regulating slide three 37, the right end of the upper slide 381 is provided with the index one 383, the left end of the lower slide 382 is provided with the index two 384, the rear ends of the upper slide 381 and the lower slide 382 are respectively locked and positioned with the inner side of the regulating slide three 37 by the locking bolt five 385, the locking bolt six 386 and the locking bolt six 386, the upper slide 381 is provided with the locking bolt seven 387 and is locked and positioned with the lower slide 382, the index one 383 and the index two 384 are arranged in a horizontally symmetrical manner after the upper slide 381 and the lower slide 382 are connected into a whole, guarantee the accuracy of contrast numerical value, all be provided with screw hole 302 on upper slide 381 and the lower slide 382 to screw hole 302 symmetry setting on upper slide 381 and the lower slide 382 makes upper slide 381 and lower slide 382 accessible locking bolt seven 387 connect screw hole on the two after, connect as an organic wholely.

Example two

The invention provides a sampling device for chemical material experiments, which is convenient for comparison through improvement, when a sampling mechanism I1 and a sampling mechanism II 2 are adjusted to be in horizontal positions, a connecting mechanism I35 and a connecting mechanism II 36 are arranged in bilateral symmetry, a handle 16 arranged at the upper end of a push rod 14 is of an oval structure, the sampling device is convenient for being held by hands, scale marks 301 are arranged on two sides of an adjusting slideway III 37 at the front end of a fixed main frame 31, the indexes I383 and II 384 are convenient to accurately determine numerical values correspondingly, the length of the adjusting slideway I33 is consistent with that of the adjusting slideway II 34, the adjusting distances of the connecting mechanism I35 and the connecting mechanism II 36 are the same, the connecting mechanism I35 and the connecting mechanism II 36 are of circular ring structures, the sampling device I1 and the sampling mechanism II 2 are convenient to be matched and sleeved, an upward protruding extension block is arranged on the left side of a lower sliding strip 382, the height of the index II 384 and the height of the index I383 can be kept parallel, and the outer ends of the first pointer 383 and the second pointer 384 are obliquely arranged, and the tip points of the first pointer 383 and the second pointer 384 are corresponding to accurate values.

The invention provides a sampling device for chemical material experiments, which is convenient for comparison through improvement, and the working principle is as follows:

firstly, a first sampling mechanism 1 and a second sampling mechanism 2 are arranged to be of the same structure, when sampling is carried out, a sampling head 13 corresponds to a chemical material to be sampled, then force is applied after a handle 16 is held tightly, a pushing rod 14 is pulled to drive a rubber plug 15 to move in a sampling cylinder 11, and the chemical material is pumped into the sampling cylinder 11, so that sampling work is carried out, the first sampling mechanism 1 and the second sampling mechanism 2 are connected through a connecting and positioning device 3, two different sampling devices can be combined into a whole, not only is rapid comparison convenient to carry out, but also space is saved, and operation and use are convenient;

secondly, the arranged connecting and positioning device 3 facilitates comparison between the first sampling mechanism 1 and the second sampling mechanism 2, the first connecting mechanism 35 and the second connecting mechanism 36 can respectively slide in the first adjusting slide way 33 and the second adjusting slide way 34 on two sides of the fixed main frame 31, so that the first sampling mechanism 1 and the second sampling mechanism 2 can slide up and down to adjust positions, and the first sampling mechanism 1 and the second sampling mechanism 2 can conveniently perform independent sampling work, namely when the first sampling mechanism 1 needs to sample, the first connecting mechanism 35 is slid to enable the first sampling mechanism 1 to descend to be not parallel to the second sampling mechanism 2, after the sampling mechanism 1 reaches a proper position, the first sampling mechanism 1 can perform sampling work, after sampling, the sampling mechanism 1 can move to the original position to perform comparison work, when the second sampling mechanism 2 performs sampling, the operation can be synchronized, and the operation is simple and convenient;

thirdly, the first connecting mechanism 35 and the second connecting mechanism 36 are arranged and can be respectively connected with the first sampling mechanism 1 and the second sampling mechanism 2, the first positioning sleeve 351 and the second positioning sleeve 361 are respectively sleeved on the sampling cylinder 11 of the first sampling mechanism 1 and the second sampling mechanism 2 and then locked by the first locking bolt 352 and the third locking bolt 362, the first connecting slide block 353 and the second connecting slide block 363 respectively slide in the first adjusting slide way 33 and the second adjusting slide way 34 on the two sides of the fixed main frame 31, and after sliding to a proper position, the second locking bolt 354 and the fourth locking bolt 364 can respectively lock the position, so that the first sampling mechanism 1 or the second sampling mechanism 2 can independently perform sampling operation, the sampling operation cannot be influenced by each other, the rapid sampling is convenient, and after the adjusting positions are parallel, the comparison operation is convenient and rapid;

fourthly, the provided index structure 38 is more convenient, faster and more accurate when used for comparison of the first sampling mechanism 1 and the second sampling mechanism 2, the position of the upper slide bar 381 and the lower slide bar 382 can be adjusted after sliding in the third adjusting slide way 37, meanwhile, the first index 383 and the second index 384 arranged on the upper slide bar 381 and the lower slide bar 382 can respectively correspond to the scale marks 301 on two sides of the third adjusting slide way 37, which are opposite, so as to ensure the comparison accuracy of the first sampling mechanism 1 and the second sampling mechanism 2, the upper slide bar 381 and the lower slide bar 382 can respectively perform sliding position adjustment, after the position adjustment, the five locking bolts 385 and the six locking bolts 386 can respectively lock positions, so that when the first sampling mechanism 1 or the second sampling mechanism 2 is adjusted at different positions, the numerical value can be better determined, and when the upper slide bar 381 and the lower slide bar 382 need to be connected into a whole, the threaded holes arranged on the upper slide bar 381 and the lower slide bar 382 are connected through the seven locking bolts 387, so that the two are connected into a whole, and when the two are separated, the locking bolt seven 387 is loosened.

The sampling device for the chemical material experiment, which is convenient to compare, is provided by improvement, the sampling mechanism I1 and the sampling mechanism II 2 are arranged and are connected through the connecting and positioning device 3, so that two different sampling devices can be combined into a whole, the rapid comparison is convenient, the space is saved, and the operation and the use are convenient; by arranging the connecting and positioning device 3, the first connecting mechanism 35 and the second connecting mechanism 36 can respectively slide on the first adjusting slide way 33 and the second adjusting slide way 34, so that the first sampling mechanism 1 and the second sampling mechanism 2 can slide to adjust positions, the first sampling mechanism 1 and the second sampling mechanism 2 can conveniently and independently sample, the operation is simple and convenient, and meanwhile, the set index structure 38 corresponds to the scale mark 301, so that the accuracy of the first sampling mechanism 1 and the second sampling mechanism 2 in comparison of numerical values is improved; the first sampling mechanism 1 and the second sampling mechanism 2 can be respectively connected through the first connecting mechanism 35 and the second connecting mechanism 36, so that the sampling mechanisms can slide in the first adjusting slide way 33 and the second adjusting slide way 34 and then can be adjusted in position, the first sampling mechanism 1 or the second sampling mechanism 2 can independently perform sampling work, the sampling work cannot be influenced by each other, the sampling is convenient and rapid, and the comparison work is convenient and rapid after the positions are adjusted to be parallel; through having set up index structure 38, this upper slide 381, lower slide 382 can slide in adjusting slide three 37, and the index 383, index two 384 that set up simultaneously can correspond relative scale mark 301, guarantee the accuracy of sampling mechanism one 1, the contrast of sampling mechanism two 2, and upper slide 381, lower slide 382 can separate and carry out the slip regulation position simultaneously, make sampling mechanism one 1 or sampling mechanism two 2 adjust when different positions, better definite numerical value.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. The standard parts used in the invention can be purchased from the market, the special-shaped parts can be customized according to the description of the specification and the description of the attached drawings, the specific connection mode of each part adopts conventional means such as bolt, rivet, welding and the like mature in the prior art, the machines, the parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, so that the detailed description is omitted.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a sampling device for chemical material experiments convenient to contrast which characterized in that: comprises a first sampling mechanism (1), a second sampling mechanism (2) and a connecting and positioning device (3), the first sampling mechanism (1) and the second sampling mechanism (2) are arranged symmetrically left and right, and the sampling mechanism I (1) comprises a sampling cylinder (11), a cylinder cover (12), a sampling head (13), a push rod (14), a rubber plug (15) and a handle (16), the upper end of the sampling cylinder (11) is provided with the cylinder cover (12), and the bottom is provided with a sampling head (13), the pushing rod (14) penetrates through the barrel cover (12) and extends to the inside of the sampling barrel (11), the rubber plug (15) is arranged inside the sampling barrel (11), and is connected with one end of a push rod (14) extending into the sampling tube (11), and a handle (16) is arranged at one end of the outer side of the tube cover (12) of the push rod (14).

2. A sampling device for chemical material experiments for facilitating comparison according to claim 1, wherein: the connecting and positioning device (3) comprises a fixing main frame (31), a lifting handle (32), a first adjusting slideway (33), a second adjusting slideway (34), a first connecting mechanism (35), a second connecting mechanism (36), a third adjusting slideway (37) and an index structure (38), a handle (32) is arranged at the top of the fixing main frame (31), a first adjusting slideway (33) and a second adjusting slideway (34) are respectively arranged on the left side surface and the right side surface of the fixing main frame (31), the first connecting mechanism (35) and the second connecting mechanism (36) are respectively connected with the inner sides of the first adjusting slideway (33) and the second adjusting slideway (34) in a sliding way, and the two are respectively sleeved with the sampling cylinders (11) of the first sampling mechanism (1) and the second sampling mechanism (2), an adjusting slideway III (37) is arranged on the front end surface of the fixing main frame (31), the index structure (38) is connected with the inner side of the third adjusting slide way (37) in a sliding mode.

3. A sampling device for chemical material experiments for facilitating comparison according to claim 2, wherein: the first connecting mechanism (35) comprises a first positioning sleeve (351), a first locking bolt (352), a first connecting slide block (353) and a second locking bolt (354), the first positioning sleeve (351) is sleeved with the sampling cylinder (11) of the first sampling mechanism (1) and is locked and fixed through the first locking bolt (352) arranged on one side of the first positioning sleeve (351), the first positioning sleeve (351) is connected with the first connecting slide block (353) on one side of the first locking bolt (352) relatively, the first connecting slide block (353) is connected with the first adjusting slide way (33) in an inner side sliding mode and is locked and positioned through the second locking bolt (354) arranged on the first connecting slide block (353).

4. A sampling device for chemical material experiments for facilitating comparison according to claim 2, wherein: the second connecting mechanism (36) comprises a second positioning sleeve (361), a third locking bolt (362), a second connecting slide block (363) and a fourth locking bolt (364), the second positioning sleeve (361) is sleeved with the sampling cylinder (11) of the second sampling mechanism (2) and is locked and fixed through the third locking bolt (362) arranged on one side of the second positioning sleeve (361), the second connecting slide block (363) is connected to one side of the second positioning sleeve (361) opposite to the third locking bolt (362), the fourth locking bolt (364) is installed on the second connecting slide block (363), the second connecting slide block (363) is connected with the inner side of the second adjusting slide way (34) in a sliding mode and is locked and positioned through the fourth locking bolt (364).

5. A sampling device for chemical material experiments for facilitating comparison according to claim 2, wherein: index structure (38) include draw runner (381), draw runner (382) down, index (383), index two (384), locking bolt five (385), locking bolt six (386) and locking bolt seven (387), draw runner (381) and draw runner (382) longitudinal symmetry set up to both rear ends all with adjust slide three (37) inboard sliding connection, index one (383) is installed to draw runner (381) right-hand member, install index two (384) on draw runner (382) left end down, go up draw runner (381) and draw runner (382) rear end respectively through locking bolt five (385), locking bolt six (386) and adjust slide three (37) inboard locking location, go up draw runner (381) upper end and be provided with locking bolt seven (387) to lock the location through locking bolt seven (387) and draw runner (382).

6. A sampling device for chemical material experiments for facilitating comparison according to claim 1, wherein: the first sampling mechanism (1) and the second sampling mechanism (2) are of the same structure, and sampling cylinders (11) of the first sampling mechanism and the second sampling mechanism are transparent.

7. A sampling device for chemical material experiments for facilitating comparison according to claim 1, wherein: the diameter of the cylinder cover (12) is larger than that of the sampling cylinder (11).

8. A sampling device for chemical material experiments for facilitating comparison according to claim 2, wherein: and scale marks (301) are arranged on two sides of the adjusting slideway III (37) at the front end of the fixed main frame (31).

9. A sampling device for chemical material experiments for facilitating comparison according to claim 5, wherein: after the upper sliding strip (381) and the lower sliding strip (382) are connected into a whole, the first index (383) and the second index (384) are arranged in parallel and symmetrical left and right.

10. A sampling device for chemical material experiments for facilitating comparison according to claim 5, wherein: threaded holes (302) are formed in the upper sliding strip (381) and the lower sliding strip (382), and the threaded holes (302) in the upper sliding strip (381) and the lower sliding strip (382) are arranged in an up-and-down symmetrical mode.