CN219977847U - Sampling device - Google Patents

Abstract

The utility model discloses a sampler which comprises a suction pipe, an extraction mechanism and a quantifying mechanism, wherein the suction pipe is connected to the extraction mechanism, the quantifying mechanism is sleeved outside the extraction mechanism, and the quantifying mechanism axially rotates relative to the extraction mechanism. The advantage utilizes quantitative mechanism to set up the volume of sampler sample, in reuse extraction mechanism and the reset module in the quantitative mechanism extracted the straw to the experiment medicament, accomplishes the quantitative extraction of experiment medicament, simple structure convenient operation, and the complicated size of current device structure that mentions among the solution background art is great, uses inconvenient problem.

Description

Sampling device

Technical Field

The utility model particularly relates to a sampler.

Background

In laboratory experiment process liquid experiment medicament is generally stored in test tube, and in experiment process often need take a sample to the medicament of experiment, take a sample the liquid reagent in every test tube and drip to corresponding liquid reagent experiment retort for carry out experiment and observe the reaction condition, current sampling method generally utilizes the rubber head burette to take a sample, but the rubber head burette can not quantitative sample, need adjust repeatedly and utilize measuring container side can reach quantitative sampling effect, and the rubber head of rubber head burette is rubber product, easy and test medicament chemical reaction takes place, produces the corruption.

In chinese patent: 201810818307.0, the name is: a pharmacy experiment sampler is described in, including the outer sleeve, its characterized in that: the inside of the outer sleeve is provided with a sampling structure, the inside of a suction pipe of the sampling structure is provided with a pushing device, the right end of the inside of the suction pipe is provided with a cleaning device, the inner side surface of the outer sleeve is provided with an ultraviolet disinfection lamp, the right end of the outer sleeve is provided with a water tank, the water outlet of the water tank is connected with the water inlet of an extraction pipeline of the cleaning device, the right side surface of the water tank is provided with a water inlet pipeline, the joint of the water tank and the water inlet pipeline is provided with a second one-way valve, the right side of the lower end of the side surface of the outer sleeve is provided with a handle, the inside of the handle is provided with a storage tank, the inside of the storage tank is provided with a storage battery pack, the side surface of the handle is provided with a switch group, the input end of the ultraviolet disinfection lamp is electrically connected with the output end of the switch group, and the input end of the switch group is electrically connected with the output end of the storage battery pack; the sampling structure comprises a suction pipe, wherein scale marks which are uniformly distributed are arranged at the left end of the side face of the suction pipe, two symmetrically arranged fixed sleeves are arranged at the right end of the side face of the suction pipe, the fixed sleeves are connected with the fixed ends of first electric telescopic rods, the telescopic ends of the first electric telescopic rods are fixedly connected with the right end face of the inside of the outer sleeve, and the input ends of the first electric telescopic rods are electrically connected with the output ends of the switch groups; the pushing device comprises a pushing plate, the pushing plate is movably clamped with the suction pipe, the right side face of the pushing plate is fixedly connected with the telescopic end of the second electric telescopic rod, the fixed end of the second electric telescopic rod is fixedly connected with the right end face of the interior of the suction pipe, and the input end of the second electric telescopic rod is electrically connected with the output end of the switch group.

As shown in fig. 1 of patent 201810818307.0, the patent mainly uses an electric telescopic rod to push a push plate to control the extraction of test agents, and has the function of quantitative measurement, but the device needs electricity, cannot be operated when no electricity is needed, and has a complex structure and a large size, so that the device is inconvenient for use and placement of experimenters.

Disclosure of Invention

The utility model aims to solve the problems that the existing sampler cannot quantitatively sample and the existing sampler needs electricity and cannot be used after no electricity is used.

Aiming at the technical problems, a sampler is provided; the method is realized by the following technical scheme: including straw, extraction mechanism and ration mechanism, the straw is connected on extraction mechanism, and ration mechanism overlaps in extraction mechanism's outside, and ration mechanism is rotatory along the axial for extraction mechanism, and ration mechanism includes inner tube, urceolus, reset module, and the urceolus cover is in the outside of inner tube, and the urceolus is rotatory along the axial for the inner tube, and reset module sets up in urceolus inner wall and inner tube outer wall contact department, is provided with the locking buckle of mutual rotatory between control urceolus and the inner tube on the urceolus, locking buckle one end card is on the inner tube, and extraction mechanism includes the inflator, presses the push rod of sliding closure and connection piston, and the one end that the push rod is connected with the piston is inserted at the inflator, presses the other end of sliding closure setting at the push rod, is provided with the straw connector at the one end of inflator, and the straw can be dismantled through the straw connector and connect on the inflator.

According to the utility model, the quantitative mechanism is used for setting the sampling amount of the sampler, and then the extraction mechanism and the reset module in the quantitative mechanism are used for extracting the experimental medicament into the suction pipe, so that the quantitative extraction of the experimental medicament is completed, the structure is simple, the operation is convenient, and the problems of large complex structure and large size and inconvenience in use of the conventional device in the prior art are solved.

According to the technical scheme, the outer cylinder is provided with the observation port for checking the scale on the inner cylinder, and the arrangement of the observation port is convenient for checking the scale indicated on the inner cylinder.

According to the technical scheme, the suction pipe is made of transparent glass, the scale marks are printed on the suction pipe, and the arrangement of the scale marks on the suction pipe enables the suction amount which can be determined through the scale on the suction pipe and the quantitative mechanism to be compared, so that incorrect measurement errors are prevented.

Compared with the prior art, the utility model has the following beneficial effects:

according to the technical scheme, the quantitative mechanism is used for setting the sampling amount of the sampler, the extraction mechanism and the reset module in the quantitative mechanism are used for extracting the experimental medicament into the suction pipe, so that the quantitative extraction of the experimental medicament is completed, the structure is simple, the operation is convenient, and the problems of large structural complexity and large size and inconvenience in use of the conventional device in the background technology are solved.

Drawings

Fig. 1 is a schematic perspective view of the present utility model.

FIG. 2 is a partial cross-sectional view of the present utility model except for a straw and a cartridge.

Fig. 3 is an enlarged view at a in fig. 2.

Fig. 4 is a perspective view of the extraction mechanism.

Fig. 5 is a schematic perspective view of the inner barrel.

Fig. 6 is a perspective view of the outer cylinder.

Fig. 7 is an exploded view of the present utility model.

Detailed Description

The following describes the technical solution in the embodiment of the present utility model in detail with reference to fig. 1 to 7 in the embodiment of the present utility model.

Example 1

As shown in fig. 1, a sampler includes a pipette 1, an extraction mechanism 2, and a dosing mechanism 3.

As shown in fig. 1 and 7, the suction tube 1 is a hollow tube with both ends open, and in order to enhance the versatility of the sampler, the suction end of the suction tube 1 is tapered to facilitate the suction of the liquid medicine in a small space and the extrusion of the liquid medicine; in order to facilitate the installation and the disassembly of the suction tube 1, the other end of the suction tube 1 can be sleeved on the suction tube connector 24 of the port of the air cylinder 21, the suction tube 1 is firmly sleeved on the suction tube connector 24, the condition of air leakage and falling under the unmanned condition can not occur, and in addition, in order to prevent the liquid medicine from being sucked into the air cylinder 21, the volume of the suction tube 1 is larger than that of the air cylinder 21.

In order to facilitate the cleaning of the suction tube 1 and check the amount of the sucked liquid medicine, the whole suction tube 1 is made of transparent glass, volume mark scales are printed on the outer wall of the suction tube 1, and the amount of the sucked liquid medicine of the suction tube 1 can be checked through the scale marks.

As shown in fig. 2, 3 and 4, the drawing mechanism 2 comprises a cylinder 21, a pressing slide 22 and a push rod 23, the cylinder 21 is a hollow cylinder with two open ends, the whole appearance is similar to a syringe cylinder, the whole body of the cylinder 21 is made of PP plastic through injection molding, one end of the cylinder 21 is not closed, the push rod 23 connected with a piston is inserted into the cylinder 21 from the port, threads for connecting with the inner cylinder 31 in the dosing mechanism 3 are arranged on the outer wall of the port of the cylinder 21, the other end of the cylinder 21 is sealed, the center of the sealing surface is vertical to the sealing surface, a suction pipe joint 24 extends outwards and protrudes, the suction pipe joint 24 is a hollow cone boss, the suction pipe joint 24 and the cylinder 21 are communicated, and the suction pipe 1 is fixed on the cylinder 21 by being sleeved outside the suction pipe joint 24.

The push rod 23 is cylindrical straight rod, push rod 23 one end is inserted in the piston and is fixedly connected with the piston, can not drop when pulling between piston and the push rod 23, the piston is a sealing plug made of elastic rubber, the diameter of the piston is slightly larger than the inner diameter of the air cylinder 21, so that the air leakage can not be caused from the contact position of the piston and the inner wall of the air cylinder 21 after the piston is inserted into the air cylinder 21, the quantitative sampling is inaccurate, a circular pressing sliding cover 22 is fixed at the other end of the push rod 23 through glue, the pressing sliding cover 22 is an opening at one end, a hollow cover with one sealed end is arranged, the inner diameter of the pressing sliding cover 22 is equal to the outer diameter of the inner cylinder 31, an annular boss is arranged on the inner wall perpendicular to the inner wall at one end of the opening of the pressing sliding cover 22 and is 2mm higher than the inner surface of the pressing sliding cover 22, and the pressing sliding cover 22 can be sleeved on the inner cylinder 31 in the quantitative mechanism 3 through the annular boss so as to be convenient to install and fix the pressing sliding cover 22.

The fixed disc 25 is arranged on the push rod 23 near the piston, the fixed disc 25 is a circular disc with the diameter slightly larger than that of the push rod 23, the fixed disc 25 and the push rod 23 are arranged on the same axis, the surface of the fixed disc 25 is perpendicular to the fixed disc 25, four circular spring fixing holes 26 are uniformly formed, the four spring fixing holes 26 penetrate through the fixed disc 25, the spring fixing holes 26 are uniformly arranged along the circular surface of the fixed disc 25, the angle between every two of the spring fixing holes is 90 degrees, and the fixed disc 25 cannot interfere with the adjacent parts when the push rod 23 is pulled.

The push rod 23 and the push sliding cover 22 are made of plastic with good toughness, and can be integrally formed by injection molding, and the plastic materials can be selected according to requirements, such as PP and PE.

As shown in fig. 2, 5 and 6, the dosing mechanism 3 comprises an inner cylinder 31, an outer cylinder 32, a reset module 33 and a locking buckle 34, wherein the inner cylinder 31 is a circular tube with two open ends, an inner thread for screwing with threads on the air cylinder 21 is arranged on the inner wall of one end of the inner cylinder 31, an annular boss is arranged at the position, which is 5mm away from a port, of the outer surface of the other end of the inner cylinder 31 and is vertical to the outer surface of the inner cylinder 31, the annular boss is 2mm higher than the outer surface of the inner cylinder 31, the inner cylinder 31 and the pressing sliding cover 22 are sleeved together through the annular boss, and the inner cylinder 31 is made of PP plastic with certain elasticity and toughness for convenient installation and fixation; a section of spiral groove 37 is concavely arranged on the outer surface of the inner cylinder 31 along the length direction of the inner cylinder 31 perpendicularly to the inner cylinder 31, two ends of the spiral groove 37 are respectively 5mm away from two ends of the inner cylinder 31 in the axial direction of the inner cylinder 31, and the section shape of the spiral groove 37 is semicircular.

Fixing teeth 38 are concavely arranged on the outer surface of the inner cylinder 31, close to the spiral groove 37, perpendicular to the surface of the inner cylinder 31, the fixing teeth 38 are uniformly distributed along the extending direction of the spiral groove 37, the fixing teeth 38 are in a step shape, the fixing teeth 38 are matched and fixed with locking pins on the locking buckles 34, and the locking pins can be inserted into the fixing teeth 38.

Four fixing tables 27 with holes are uniformly arranged on the inner surface of one end of the annular boss of the inner cylinder 31 along the radial direction of the inner cylinder 31, one end of a tension spring 28 is hung in a spring fixing hole 26 on the fixing table 27, and one end of the tension spring 28 is hung in a fixing disc 25, and the push rod 23 after being pressed down is reset through the elasticity of the tension spring 28.

Scale marks are uniformly printed in the pitch space of the spiral groove 37 along the spiral direction.

The outer cylinder 32 is a hollow tube with two open ends, a spiral groove 37 matched with the inner cylinder 31 is formed on the inner wall of the outer cylinder, and the section of the spiral groove 37 on the outer cylinder 32 and the section of the spiral groove 37 on the inner cylinder 31 can be combined into a complete circle.

A rectangular observation port 35 is formed on the surface of one end of the outer cylinder 32 and perpendicular to the surface of the outer cylinder 32, the observation port 35 penetrates through one side of the outer cylinder 32, an indication arrow is marked in the middle of the observation port 35, and the indication arrow can be marked by printing or by adding an indication arrow on the observation port 35 during production injection molding.

The outer surface of the outer barrel 32 near one end of the observation port 35 is provided with a circular boss in a protruding mode perpendicular to the outer barrel 32, a circular through hole penetrating through the single-side surface of the outer barrel 32 is formed in the circle center of the circular boss perpendicular to the outer barrel 32, a locking pin on the locking buckle 34 is inserted into the circular through hole, in order to facilitate unlocking and locking of the locking buckle 34, one half of the circular boss perpendicular to the outer barrel 32 is cut off in the axial direction, the circular boss is changed into two stepped semicircular bosses with different heights, and the two semicircular bosses are connected in a transitional and smooth mode through cambered surfaces in the height.

The locking pin is cylindric, locking pin one end inserts in fixed tooth 38, and one end passes ring boss and utilizes screw and handle 36 to link together, and handle 36 and locking pin are perpendicular on the axis, and handle 36 places on ring boss, sets up a circular platform near locking pin inserts fixed tooth 38 one end, places a compression spring on circular platform, and compression spring overlaps the outside at the locking pin, and compression spring one end is propped on circular platform, and one end is supported on the inner wall of urceolus 32, in order to prevent compression spring from skidding, can open a concave circular slot in the corresponding position on the inner wall of urceolus 32 for place compression spring.

Regarding locking and unlocking of the locking buckle 34, when the outer barrel 32 needs to be rotated, the handle 36 is rotated first, the handle 36 moves from a low semicircular boss to a high semicircular boss in the circular bosses, and the locking pin connected with the handle 36 is lifted simultaneously in the lifting process of the handle 36, so that the locking pin is removed from the fixing teeth 38, unlocking of the locking buckle 34 is completed, namely the outer barrel 32 can be rotated, at the moment, the pressure spring is in a compression stress state, after the outer barrel 32 is rotated, the locking outer barrel 32 of the locking buckle 34 is needed, rebound of the outer barrel 32 is prevented, when the outer barrel 32 needs to be locked, the handle 36 is rotated first, the handle 36 moves from the high semicircular boss in the circular bosses to the low semicircular boss, at the moment, the handle 36 and the locking pin are ejected out under the action of the pressure spring, the locking pin is inserted into the fixing teeth 38, and the locking of the locking buckle 34 is completed, and the effect of fixing the outer barrel 32 is achieved.

The reset module 33 is arranged in the spiral groove 37 between the outer cylinder 32 and the inner cylinder 31, the reset module 33 mainly comprises a reset spring 39 and a reset block plugged in the reset spring 39, the diameter of the reset spring 39 is slightly smaller than that of the spiral groove 37, the reset spring 39 is placed in the spiral groove 37, the reset block is cylindrical, one end of the reset block is smaller than the inner diameter of the reset spring 39 and can be inserted into the reset spring 39, and the other end of the reset block is larger than the outer diameter of the reset spring 39 but smaller than the inner diameter of the spiral groove 37, so that the reset block can be placed in the spiral groove 37.

Regarding the reset mode of the reset module 33, when the quantitative medicine taking is needed, the outer barrel 32 is rotated first, the quantitative medicine taking value is determined according to the number in the observation port 35 on the outer barrel 32, when the outer barrel 32 is rotated, the outer barrel 32 drives the reset block to rotate along the spiral groove 37, and then drives the reset spring 39 to compress, at the moment, the reset spring 39 is in a compressed state, at the moment, the outer barrel 32 cannot rotate for reset under the action of the locking buckle 34, when the reset is needed, the locking buckle 34 is unlocked, and the outer barrel 32 rotates until reset under the action of the reset spring 39.

The utility model also has a plurality of use modes:

quantitatively sampling, namely setting a sampling value through a quantitative mechanism 3, and quantitatively sampling;

the non-quantitative sampling is performed, the locking buckle 34 is unlocked, the outer barrel 31 can be rotated and lowered at will, the pressing sliding cover 22 is pressed during use, and at the moment, the outer barrel 31 is rotated downwards under the pushing of the pressing sliding cover 22 to any position within the range, so that the non-quantitative sampling is achieved.

The use process of the embodiment is as follows:

1) Before use, the clean suction pipe 1 is sleeved on the suction pipe joint 24 on the inflator 21;

2) Rotating the handle 36 on the locking buckle 34, wherein the handle 36 moves from a low semicircular boss to a high semicircular boss in the circular bosses, and the locking pin connected with the handle 36 is lifted at the same time in the lifting process of the handle 36, so that the locking pin moves from the fixed teeth 38, and unlocking of the locking buckle 34 is completed;

3) The outer cylinder 32 of the quantifying mechanism 3 is rotated, at the moment, the outer cylinder 32 descends along the spiral groove 37 in a spiral way under the action of the quick reset, at the moment, the number indicated on the inner cylinder 31 can be seen from the observation port 35 until the arrow at the observation port 35 points to the number scale to be measured, and the quantifying of the quantifying mechanism 3 is completed;

4) After the quantitative operation is completed, the thumb presses the pressing sliding cover 22 downwards, at the moment, the pressing sliding cover 22 slides downwards along the inner cylinder 32, meanwhile, the push rod 23 is pushed to slide downwards in the air cylinder 21, and the pressing is stopped after the lower port of the pressing sliding cover 22 is contacted with the upper port of the outer cylinder 32;

5) The suction pipe 1 is inserted into the liquid to be sampled, the pressing sliding cover 22 is loosened, the pressing sliding cover 22 and the push rod 23 connected with the piston ascend and reset under the action of the tension spring 28, and then the push rod 23 is driven to ascend, and the liquid to be sampled is sucked into the suction pipe 1 through the air cylinder 21 and the push rod 23 connected with the piston;

6) The liquid in the suction tube 1 is extruded into a designated container by pressing the sliding cover 22 downwards to sample.

The above embodiments are only for illustrating the technical idea of the present utility model, and the protection scope of the present utility model is not limited thereto, and any modification made on the basis of the technical scheme according to the technical idea of the present utility model falls within the protection scope of the present utility model.

Claims (3)

1. A sampler, characterized in that: comprises a suction tube (1), an extraction mechanism (2) and a dosing mechanism (3), wherein the suction tube (1) is connected to the extraction mechanism (2), the dosing mechanism (3) is sleeved outside the extraction mechanism (2), the dosing mechanism (3) axially rotates relative to the extraction mechanism (2), the dosing mechanism (3) comprises an inner tube (31), an outer tube (32) and a reset module (32), the outer tube (32) is sleeved outside the inner tube (31), the outer tube (32) axially rotates relative to the inner tube (31), the reset module (32) is arranged at the contact position between the inner wall of the outer tube (32) and the outer wall of the inner tube (31), a locking buckle (34) for controlling the mutual rotation between the outer tube (32) and the inner tube (31) is arranged on the outer tube (32), one end of the locking buckle (34) is clamped on the inner tube (31), the extraction mechanism (2) comprises a push rod (21), a sliding cover (22) and a connecting piston, one end of the push rod (23) is connected with the piston is inserted into the push rod (21), the other end of the push rod (22) is arranged at the other end of the push rod (21), the suction pipe (1) is detachably connected to the inflator (21) through a suction pipe joint (24).

2. A sampler according to claim 1, wherein: an observation port (35) for observing scales on the inner cylinder (31) is arranged on the outer cylinder (32).

3. A sampler according to claim 1, wherein: the suction pipe (1) is made of transparent glass, and scale marks are printed on the suction pipe (1).