CN210720065U

CN210720065U - Cantilever type reciprocating cylinder dissolution instrument

Info

Publication number: CN210720065U
Application number: CN201921215456.4U
Authority: CN
Inventors: 刘欢; 孙红雪; 李涛; 陈晨
Original assignee: Shanghai Focs Analytical Instruments Co ltd
Current assignee: Shanghai Focs Analytical Instruments Co ltd
Priority date: 2019-07-30
Filing date: 2019-07-30
Publication date: 2020-06-09
Anticipated expiration: 2029-07-30

Abstract

The utility model discloses a reciprocal section of thick bamboo of cantilever type dissolves out appearance relates to medicine detecting instrument field. The method comprises the following steps: the water bath box is arranged at the bottom of the cantilever type reciprocating cylinder dissolution instrument, and the top of the water bath box is provided with a dissolution cup rack; a plurality of dissolving cup groups which are arranged in sequence and are erected in the water bath tank through the dissolving cup racks; a vertical guide rail is arranged on the vertical bracket; the needle frame is arranged above the water bath box and is vertically connected with the vertical guide rail; the reciprocating barrel frame is arranged between the needle frame and the water bath tank and is vertically connected with the vertical guide rail; each row of dissolution cup group is provided with a cover plate which is hinged on the dissolution cup frame; the top of the cover plate is provided with a baffle plate in a protruding and inclined manner; the flip structure is arranged on the vertical support. The utility model has the advantages that: the cover plate is arranged on the dissolution cup group, and the cover plate is automatically opened and closed in the experiment, so that the influence of contamination and the like in the experiment is reduced; the limiting block limits the needle frame not to do rapid high-frequency reciprocating motion, and the possibility of damage of pipelines and lines on the needle frame is avoided.

Description

Cantilever type reciprocating cylinder dissolution instrument

Technical Field

The utility model relates to a medicine detecting instrument especially relates to a reciprocal section of thick bamboo of cantilever type dissolves out appearance.

Background

The reciprocating cylinder method is called as UPS third method or UPS3 for short, and is a method for drug dissolution test in the United states Federal, under certain conditions, the dissolution speed and dissolution degree from solid preparations such as tablets or capsules, etc., the drug dissolution directly influences the absorption and utilization of the drug in vivo, and the method is an internal index for evaluating the quality of the drug, is an effective alternative method for researching and evaluating the availability of the drug in vitro, and is an important means for ensuring and measuring whether the production process and quality of solid oral preparations are reasonable and stable, so the accuracy of the one-step measurement is particularly important. Conventional dissolution instruments suffer from the following drawbacks and disadvantages: the conventional dissolution cup group is not protected by an opening, but the open dissolution cup can not completely avoid the error splashing or contamination in the dissolution rate measurement experiment, and the open dissolution cup is directly contacted with the environment, so the environment has influence on the dissolution cup; when the dissolution instrument is used in an experiment, frequent rapid reciprocating motion needs to be carried out on a reciprocating barrel frame provided with a reciprocating barrel, at the moment, a needle frame can also synchronously and rapidly reciprocate along with the reciprocating barrel, and the pipeline or the line on the needle frame is easily damaged by the frequent rapid reciprocating motion.

Disclosure of Invention

In order to solve the above problems, the present invention provides a cantilever type dissolution instrument with a reciprocating cylinder, comprising:

the water bath box is arranged at the bottom of the cantilever type reciprocating cylinder dissolution instrument, and the top of the water bath box is provided with a dissolution cup rack;

the plurality of dissolving-out cup groups are sequentially arranged in rows and are erected in the water bath tank through the dissolving-out cup racks;

the vertical bracket is provided with a vertical guide rail;

the needle frame is arranged above the water bath tank, is vertically connected with the vertical guide rail and reciprocates in the vertical direction along the vertical guide rail;

the reciprocating barrel frame is arranged between the needle frame and the water bath box, is vertically connected with the vertical guide rail and reciprocates in the vertical direction along the vertical guide rail;

the cover plate is correspondingly arranged above each row of the dissolving-out cup group, and each cover plate is hinged on the dissolving-out cup rack;

a blocking piece is arranged on the top of each cover plate in a protruding mode and close to one side of the vertical guide rail, and the blocking piece and the cover plate are arranged in an inclined angle mode;

and the flip structure is arranged on the vertical support.

Preferably, the flip structure includes:

the fixed block is arranged on the vertical support, a long shifting piece is hinged to the fixed block, and a shifting rod is arranged at one end, far away from a hinged point with the fixed block, of the long shifting piece;

the limiting screw is arranged on one side of the long shifting piece, and the distance between the limiting screw and the hinge point is smaller than the length of the long shifting piece;

the direction of the side of the long-strip shifting piece is consistent with the inclination direction of the blocking piece by the limiting screw, and the vertical distance between the shifting rod and the cover plate is smaller than that between the blocking piece and the top of the cover plate.

Preferably, the device further comprises a translation driving device disposed below the vertical support, the translation driving device includes:

the translation guide rail is arranged below the vertical bracket;

the translation sliding block is arranged at the bottom of the vertical bracket and is in sliding connection with the translation guide rail;

the screw rod penetrates through a threaded hole formed in the bottom of the vertical support and is in threaded fit with the threaded hole;

and the motor is connected with the screw rod.

Preferably, the needle frame further comprises a limiting block, the limiting block is arranged on the vertical support, the reciprocating barrel frame drives the needle frame to move downwards in the vertical direction to the position of the limiting block, the needle frame is stopped at the position of the limiting block, and the reciprocating barrel frame continues to move downwards and does rapid high-frequency reciprocating motion below the limiting block.

Preferably, still include a stopper, the stopper set up in on the support and be close to guide rail one side, just reciprocal barrel holder drives the needle frame is followed vertical direction downstream arrives during the position at stopper place, the needle frame stops the position at stopper place, reciprocal barrel holder continues downstream and is quick high frequency reciprocating motion below the stopper.

Preferably, the device further comprises a vertical driving device disposed on the vertical support, the vertical driving device comprises:

the sliding groove is arranged on the vertical support and is parallel to the vertical guide rail;

and the reciprocating slide block is arranged in the sliding groove and is fixed on the reciprocating barrel frame.

And the reciprocating module is arranged on the vertical support and drives the reciprocating slide block to reciprocate in the chute along the vertical direction.

Preferably, the device also comprises a plurality of reciprocating cylinders which are arranged below the reciprocating cylinder frame, and each reciprocating cylinder is connected with the reciprocating cylinder frame through a metal rod;

an anti-evaporation cover is arranged at the top of each reciprocating cylinder and sleeved on the metal rod.

Preferably, the needle frame is provided with:

the sampling filter head seats are arranged on the needle frame, and a sampling needle interface is arranged on the side surface of each sampling filter head seat;

the sampling filter head seat is connected with a sampling needle arranged below the needle frame through the sampling needle interface; the sampling needle penetrates through the evaporation-proof cover and extends to the periphery of the reciprocating cylinder;

each liquid supplementing needle interface is connected with a liquid supplementing needle arranged below the needle frame, and the liquid supplementing needle penetrates through the evaporation prevention cover and extends to the periphery of the reciprocating cylinder.

Preferably, still include a waste liquid collection device, waste liquid collection device specifically includes:

the waste liquid groove is arranged on the dissolution cup frame and is far away from one side of the dissolution cup group;

the inlet end of the waste liquid pipeline is connected with the waste liquid groove, and the outlet end of the waste liquid pipeline extends out towards one side far away from the dissolution cup group;

and the waste liquid tank is arranged below the outlet end of the waste liquid pipeline.

Preferably, the water bath heating device is further included and is connected with the water bath tank.

Preferably, the needle frame further comprises a vertical drag chain, and the vertical drag chain is arranged inside the vertical support and connected with the needle frame.

The utility model discloses following beneficial effect has: the cover plate is arranged on the dissolution cup group, the cover plate is automatically opened for experiment in the experiment, the cover plate is automatically closed after the experiment is finished, and the solute in the dissolution cup is in an isolation space after the arrangement, so that the influence of contamination and environment on the solute is reduced, and the experimental data is more reliable; the limit block limits the needle frame not to follow the rapid high-frequency reciprocating motion of the reciprocating cylinder, so that the possibility of damage to a pipeline or a circuit on the needle frame caused by the rapid high-frequency reciprocating motion is avoided.

Drawings

FIG. 1 is a schematic diagram of a cantilever-type reciprocating tube dissolution apparatus according to a preferred embodiment of the present invention;

FIG. 2 is a schematic diagram of a cantilever-type reciprocating tube dissolution apparatus according to a preferred embodiment of the present invention;

FIG. 3 is a schematic diagram of a cantilever-type reciprocating tube dissolution apparatus according to a preferred embodiment of the present invention;

FIG. 4 is a schematic view of the initial positions of the needle holder and the reciprocating cylinder holder according to the preferred embodiment of the present invention;

FIG. 5 is a schematic view of the needle frame and the reciprocating barrel frame at the position of the limiting block according to the preferred embodiment of the present invention;

fig. 6 is a schematic view of the needle frame in the bottom position of the reciprocating cylinder at the position of the limiting block according to the preferred embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

The present invention will be further described with reference to the accompanying drawings and specific embodiments, but the present invention is not limited thereto.

In order to solve the above problems, the present invention provides a cantilever type reciprocating tube dissolution instrument, as shown in fig. 1 to 3, comprising:

the water bath tank 1 is arranged at the bottom of the cantilever type reciprocating cylinder dissolution instrument, and the top of the water bath tank 1 is provided with a dissolution cup rack 11;

a plurality of dissolving cup groups 12, wherein the dissolving cup groups 12 are arranged in a row in sequence and are erected in the water bath tank 1 through a dissolving cup frame 11;

the vertical bracket 4 is provided with a vertical guide rail 41;

the needle frame 2 is arranged above the water bath tank 1, and the needle 2 is vertically connected with the vertical guide rail 41 and reciprocates in the vertical direction along the vertical guide rail 41;

the reciprocating barrel frame 3 is arranged between the needle frame 2 and the water bath tank 1, and the reciprocating barrel 3 is vertically connected with the vertical guide rail 41 and reciprocates in the vertical direction along the vertical guide rail 41;

a cover plate 13 is correspondingly arranged above each row of dissolution cup groups 12, and each cover plate 13 is respectively hinged on the dissolution cup frame 11;

a blocking piece 14 is arranged at the top of each cover plate 13 and protrudes from one side close to the vertical guide rail, and the blocking piece 14 and the cover plate 13 are arranged at an inclined angle;

and the flip structure is arranged on the vertical support 4.

Specifically, in the present embodiment, the cantilever-type reciprocating tube dissolution apparatus comprises a water bath tank 1 arranged at the bottom of the dissolution apparatus, and a plurality of rows of dissolution cup groups 12 arranged on a dissolution cup frame in the water bath tank 1; the solution contained in the dissolution cup group 12 is used for testing the dissolution rate of the medicine in the reciprocating barrel, and the needle frame 2 and the reciprocating barrel frame 3 can do rapid high-frequency reciprocating motion along the vertical guide rail 41, so that the reciprocating barrel 31 arranged on the reciprocating barrel frame 3 is driven to do rapid high-frequency reciprocating motion in the dissolution cup group 12; a cover plate 13 is arranged on the column stripping cup group 12, a baffle plate 14 is arranged on the cover plate 13 at one side close to the vertical guide rail 41, and the baffle plate 14 and the cover plate 13 are arranged at an inclined angle; the cover plate 13 is hinged on the dissolution cup holder 11 and can be turned over relative to the dissolution cup holder 11; when the experiment is started, the cover plate 13 is automatically opened by the flip structure through the blocking piece 14, then the reciprocating cylinder 31 is driven by the reciprocating cylinder frame 3 to do rapid high-frequency reciprocating motion in the dissolution cup group 12, the reciprocating cylinder 31 performs dissolution experiment in the dissolution cup group 12, and when the experiment is finished, the flip structure can automatically cover the cover plate 13 on the dissolution cup group through the blocking piece 14. The cover plate 13 covering the dissolution cup set 12 is opened only when the dissolution experiment is carried out, and the cover plate 13 is covered on the dissolution cup set 12 once the experiment is finished. Namely, the dissolution cup group 12 is isolated from the external environment by the cover plate 13 before and after the whole experiment, so as to ensure the reliability of the experimental data.

In a preferred embodiment of the present invention, the flip structure comprises:

the fixed block 42 is arranged on the vertical support 4, the fixed block 42 is hinged with a long shifting sheet 43, and a shifting lever 44 is arranged at one end, far away from a hinged point with the fixed block 42, of the long shifting sheet 43;

the limiting screw 45 is arranged on one side of the long shifting piece 43, and the distance between the limiting screw 45 and a hinge point is smaller than the length of the long shifting piece 43;

the direction of the limit screw 45 at one side of the long shifting piece 43 is consistent with the inclination direction of the blocking piece 14, and the vertical distance between the shifting rod 44 and the cover plate 13 is smaller than the vertical distance between the blocking piece 14 and the top of the cover plate 13.

Specifically, in this embodiment, a long shifting piece 43 is hinged to the fixed block 42, a shifting lever 44 is fixed to the long shifting piece 43, and the long shifting piece 43 and the shifting lever 44 can rotate together around a hinge point of the long shifting piece 43 and the fixed block 42. The stopper screw 45 is provided on one side of the long paddle 43, so that the long paddle 43 can move only to one side. The cover plate 13 is hinged on the dissolution cup holder 11 and can be turned over relative to the dissolution cup holder 11, a blocking piece 14 is convexly arranged at one side of the top of the cover plate 13 close to the fixing block 42, and the blocking piece 14 and the cover plate 13 form an inclined angle; the blocking plate 14 is inclined in the same direction as the stopper screw 45 on the side of the elongated plate 43, so that the rear lever 44 can open the cover plate 13 by means of the stopper screw 45. The distance between the limit screw 45 and the hinge point is less than the length of the long shifting piece 43, when the long shifting piece 43 and the shifting rod 44 move horizontally towards the blocking piece,

specifically, before each row of dissolution cup sets is subjected to relevant experiments, the cover plate 13 is in a covering state, and the fixing block 42 is located above the cover plate 13, when the flip structure in this embodiment starts to operate, the fixing block 42 drives the long-strip shifting piece 43 and the shifting rod 44 to move toward the blocking piece 14 protruding from the cover plate 13, and when the shifting rod 44 moves to the position of the blocking piece 14, the blocking piece 14 blocks the shifting rod 44 from moving, but because of the existence of the limit screw 45, the limit screw 45 pushes against the long-strip shifting piece 43 to cause the shifting rod 44 to continue to move, and resistance generated by the continued movement of the shifting rod 44 drives the blocking piece 14 to move together, so that the cover plate 13 connected with the blocking piece 14 is turned over along the hinged position of the cover plate 13 and the dissolution cup holder 11, the cover plate 13 is opened.

Further, when the experiment of the dissolution cup set 12 is finished, the long-strip shifting piece 43 and the shifting lever 44 need to move back to the original position, the fixed block 42 drives the long-strip shifting piece 43 and the shifting lever 44 to move along the direction opposite to the direction when the structure of the cover plate 13 starts to work, when the shifting lever 44 moves to the position of the cover plate 13, the cover plate 13 can block the movement of the shifting lever 44, but due to the action of the self gravity of the shifting lever 44 and the long-strip shifting piece 43, the shifting lever 44 drives the cover plate 13 to move together, the cover plate 13 is turned over along the hinged position of the cover plate 13 and the dissolution cup holder 11, the cover plate 13 is covered, and the experiment operation of the row.

The utility model discloses in the preferred embodiment, still include a translation drive arrangement, set up in the below of vertical support 4, translation drive arrangement includes:

the translation guide rail 16 is arranged below the vertical bracket 4;

the translation sliding block 15 is arranged at the bottom of the vertical support 4 and is in sliding connection with the translation guide rail 16;

the screw rod 17 penetrates through a threaded hole formed in the bottom of the vertical support 4 and is in threaded fit with the threaded hole;

and the motor 18 is connected with the screw rod 17.

Specifically, in this embodiment, the translation slider 15 makes a reciprocating motion on the translation guide rail 16 along the arrangement direction of the dissolution cup group 12, so as to drive the vertical support 4 to make a reciprocating motion along the arrangement direction of the dissolution cup group 12, thereby driving the flip structure disposed on the vertical support 4 to make a reciprocating motion along the arrangement direction of the dissolution cup group 12. The bottom of the vertical support 4 is provided with a threaded hole, the screw rod 17 passes through the threaded hole and is in threaded fit with the threaded hole, and the motor 18 drives the screw rod 17, so that the vertical support 4 drives the flip structure to move back and forth.

The utility model discloses in the embodiment of preferred, still include a stopper 46, stopper 46 sets up on vertical support 4, and reciprocal barrel holder 3 drives needle frame 2 along vertical direction downstream to stopper 46 when the position at place, and needle frame 2 stops in the position at stopper 46 place, and reciprocal barrel holder 3 continues the downstream and is quick high frequency reciprocating motion below stopper 46.

Specifically, in the embodiment, preferably, a needle frame mounting plate 112 is mounted at the bottom of the needle frame 2, is connected with the vertical guide rail 4 and synchronously reciprocates on the vertical guide rail 4, and a reciprocating barrel frame mounting plate 113 is mounted at the bottom of the reciprocating barrel frame 3, is connected with the vertical guide rail 4 and synchronously reciprocates on the vertical guide rail 4; for clarity of illustration, the drawings provided in this embodiment do not show the needle rack 2 and the reciprocating carriage 3, but only the needle rack mounting plate 112 and the reciprocating carriage mounting plate 113; at the beginning of the experiment, as shown in fig. 4, the needle frame mounting plate 112 and the reciprocating barrel frame mounting plate 113 are arranged on the upper part of the vertical bracket 4, then the reciprocating barrel frame 3 and the reciprocating barrel frame mounting plate 113 are driven by the vertical driving device to slowly move downwards along the vertical guide rail 41, and preferably, the needle frame 2 moves downwards under the action of the gravity of the needle frame 2 and the reciprocating barrel frame 3 synchronously. As shown in fig. 5, when moving to the position of the stop block 7, the needle frame 2 is stopped by the stop block 46 through the needle frame mounting plate 112 and stays at the position, the reciprocating barrel frame 3 stops slightly at the position and then starts to perform rapid high-frequency reciprocating motion along the guide rail 41 alone, when the rapid high-frequency reciprocating motion of the reciprocating barrel frame 3 is finished, the reciprocating barrel frame 3 stays at the lowest point as shown in fig. 6, and then the reciprocating barrel frame 3 is driven by the vertical driving device to move upwards slowly, moves to the needle frame 2 and drives the needle frame 2 to move upwards synchronously to the initial position as shown in fig. 4.

The utility model discloses in the preferred embodiment, still include a vertical drive unit, set up on vertical support 4, vertical drive unit includes:

the sliding groove 51 is arranged on the vertical support 4, and the sliding groove 51 is arranged in parallel with the vertical guide rail 41;

and a reciprocating slider 52 disposed in the slide groove 51 and fixed to the reciprocating cylinder frame 3.

And the reciprocating module 53 is arranged on the vertical bracket 4 and drives the reciprocating slide block 52 to reciprocate in the sliding chute 51 along the vertical direction.

Specifically, in the present embodiment, the reciprocating module 53 drives the reciprocating slide block 52 disposed parallel to the vertical guide rail 41 to reciprocate in the slide slot 51, so as to drive the reciprocating rack 3 to reciprocate.

In the preferred embodiment of the present invention, the device further comprises a plurality of reciprocating cylinders 31 disposed below the reciprocating cylinder frame 3, each reciprocating cylinder 31 is connected to the reciprocating cylinder frame 3 through a metal rod 32;

an evaporation-proof cover 33 is provided on the top of each reciprocating cylinder 31, and the evaporation-proof cover 33 is sleeved on the metal rod 32.

Specifically, in this embodiment, the evaporation-proof cover 33 is sleeved on the metal rod 32 and can move up and down along the metal rod 32, and when the reciprocating cylinder 31 performs rapid high-frequency reciprocating motion in the dissolution cup, the evaporation-proof cover 33 is always covered on the dissolution cup under its own weight, so as to prevent evaporation of the solution in the dissolution cup, and to make the experimental data more reliable.

In the preferred embodiment of the present invention, the needle frame 2 is provided with:

a plurality of sampling filter head seats 22 arranged on the needle frame 2, and a sampling needle interface 25 is arranged on the side surface of each sampling filter head seat 22;

the sampling filter head seat 22 is connected with a sampling needle 21 arranged below the needle frame 2 through a sampling needle interface 25; the sampling needle 21 passes through the evaporation-proof cover 33 and extends to the periphery of the reciprocating cylinder 31;

and each liquid supplementing needle port 24 is connected with a liquid supplementing needle 23 arranged below the needle frame 2, and the liquid supplementing needle 23 penetrates through the evaporation preventing cover 33 and extends to the periphery of the reciprocating cylinder 31.

Specifically, in the present embodiment, in the experiment, the sampling needle 21 takes out the corresponding solution from the dissolution cup set 12, and the corresponding solution is filtered by the sampling filter seat 22 and then is transmitted from the sampling needle interface 25 to the sampler for testing the experimental data; after sampling, corresponding solution supplementing is carried out, and the corresponding solution is conveyed to a solution supplementing needle interface 24 and is supplemented into the dissolution cup group 12 through a solution supplementing needle 23 so as to carry out the next group of experiments.

The utility model discloses in the preferred embodiment, still include a waste liquid collection device, waste liquid collection device specifically includes:

a waste liquid tank 61 provided on the dissolution cup holder 11 and away from the dissolution cup group 12;

a waste liquid pipe 62, wherein the inlet end of the waste liquid pipe 62 is connected with the waste liquid tank 61, and the outlet end of the waste liquid pipe 62 extends out towards one side far away from the dissolving-out cup group 12;

and a waste liquid tank 63 disposed below the outlet end of the waste liquid pipe 62.

Specifically, in this embodiment, when an experiment is finished or a fluid infusion pipeline needs to be cleaned, the needle holder 2 may be moved onto the waste fluid tank 61 to clean the fluid infusion pipeline, and the cleaned waste fluid enters the waste fluid tank 61 from the fluid infusion needle 23 and then enters the waste fluid tank 63 through the waste fluid pipeline 62, so as to perform a next set of experiments or wait for a next experiment after cleaning.

The utility model discloses the preferred embodiment still includes water bath heating device, and water bath heating device connects water bath 1.

Specifically, in this embodiment, the water bath heating apparatus controls the temperature of the water bath tank 1 so that the dissolution cup group 12 is at the set experimental temperature.

The utility model discloses in the preferred embodiment, still include vertical tow chain 7, vertical tow chain 7 sets up inside vertical support 4 and is connected with needle frame 2.

In particular, in the embodiment, the vertical drag chain 7 effectively avoids the damage caused by the internal circuit being pulled when the needle frame 2 moves.

The above description is only an example of the preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and those skilled in the art should be able to realize the equivalent alternatives and obvious variations of the present invention.

Claims

1. A cantilevered, reciprocating-barrel dissolution apparatus, comprising:

the vertical bracket is provided with a vertical guide rail;

and the flip structure is arranged on the vertical support.

2. The cantilevered reciprocating cartridge dissolution instrument according to claim 1, the flip structure comprising:

3. The cantilevered reciprocating cartridge dissolution apparatus according to claim 1, further comprising a translational drive means disposed below the vertical support, the translational drive means comprising:

the translation guide rail is arranged below the vertical bracket;

and the motor is connected with the screw rod.

4. The cantilever type reciprocating barrel dissolution instrument according to claim 1, further comprising a limiting block, wherein the limiting block is disposed on the vertical support, and when the reciprocating barrel holder drives the needle holder to move downward along the vertical direction to the position of the limiting block, the needle holder stays at the position of the limiting block, and the reciprocating barrel holder continues to move downward and performs a fast and high-frequency reciprocating motion below the limiting block.

5. The cantilevered reciprocating cartridge dissolution apparatus according to claim 1, further comprising a vertical drive disposed on said vertical support, said vertical drive comprising:

the reciprocating slide block is arranged in the sliding groove and is fixed on the reciprocating barrel frame;

6. The cantilevered reciprocating barrel dissolution apparatus according to claim 1, further comprising a plurality of reciprocating barrels disposed below said reciprocating barrel holder, each of said reciprocating barrels being connected to said reciprocating barrel holder by a metal rod;

7. The cantilevered reciprocating cartridge dissolution apparatus according to claim 6, wherein the needle carriage is provided with:

the sampling filter head seat is connected with a sampling needle arranged below the needle frame through the sampling needle interface;

the sampling needle penetrates through the evaporation-proof cover and extends to the periphery of the reciprocating cylinder;

8. The cantilevered reciprocating cartridge dissolution apparatus according to claim 1, further comprising a waste fluid collection device, said waste fluid collection device comprising:

9. The cantilevered reciprocating barrel dissolution apparatus according to claim 1, further comprising a water bath heating device connected to said water bath tank.

10. The cantilevered reciprocating barrel dissolution apparatus according to claim 1, further comprising a vertical drag chain disposed inside the vertical support and connected to the needle carriage.