CN220677396U

CN220677396U - Auxiliary device for preparing food detection agent

Info

Publication number: CN220677396U
Application number: CN202322134672.9U
Authority: CN
Inventors: 陈芳梅
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-08-09
Filing date: 2023-08-09
Publication date: 2024-03-29
Anticipated expiration: 2033-08-09

Abstract

The utility model provides an auxiliary device for preparing food detection agent, including the installation section of thick bamboo, sealed casing, the evacuating ware, press from both sides the cover ware, the inner chamber of casing is divided into pumping chamber and annotate the liquid chamber, the casing top is provided with the extraction opening, set up the ooff valve in the pumping chamber, the extraction opening is linked together with the evacuating ware, the casing bottom is provided with the cover import, the cover import is linked together with the opening of installation section of thick bamboo, the pumping chamber is linked together with annotating the liquid chamber, the casing top sets up the inlet, the casing bottom sets up the liquid outlet, press from both sides cover mechanism and be located annotating the liquid chamber, press from both sides cover mechanism and be connected with stop gear, stop gear is connected with the shells inner wall, the casing bottom is provided with out the hopper, be provided with the shrouding on the bottom opening of out the hopper. The utility model has the advantages that: keeping the cover clean and automating the cover installation and removal.

Description

Auxiliary device for preparing food detection agent

Technical Field

The utility model relates to the technical field of food detection agent manufacturing, in particular to an auxiliary device for preparing a food detection agent.

Background

GB 5009.28-2016 (determination of benzoic acid, sorbic acid and saccharin sodium in food) prescribes a preparation method of related reagents, wherein the preparation method of an ammonium acetate solution (20 mmol/L) comprises the steps of weighing 1.54g of ammonium acetate, adding a proper amount of water for dissolution, fixing the volume to 1000mL by water, and filtering by a 0.22 mu m aqueous phase microporous filter membrane for later use; the preparation method of the formic acid-ammonium acetate solution (2 mmol/L formic acid+20 mmol/L ammonium acetate) comprises the steps of weighing 1.54g of ammonium acetate, adding a proper amount of water for dissolution, adding 75.2 mu L of formic acid, fixing the volume to 1000mL by using water, and filtering by a 0.22 mu m aqueous phase microporous filter membrane for later use. The preparation of corresponding ammonium acetate solutions is also specified in GB5009.35-2016 "determination of synthetic colorants in food", wherein a microfiltration membrane of 0.45 μm aqueous phase is used.

Both reagents need to be filtered through a microporous filter membrane after volume fixing. At present, the microporous filter membrane is of a structure arranged on the cover, after the syringe sucks solution, the liquid suction head of the syringe is disassembled, the microporous filter membrane cover is covered on the mounting position of the liquid suction head, and then the syringe piston rod of the syringe is pressed to enable the syringe piston to discharge the solution from the liquid suction head into the liquid chromatography sample injection bottle, so that the solution is filtered. However, in this configuration method, the microporous filter membrane is usually exposed in the storage box before use, and the microporous filter membrane cover needs to be manually mounted on the syringe, so that the operation is difficult to ensure the mounting position of the syringe and the cleaning of the microporous filter membrane cover, and the detection effect may be affected. In addition, after the microporous filter membrane cover is installed, the needle cylinder is slowly discharged, so that the needle cylinder piston rod of the needle cylinder is difficult to press, one hand is required to hold the needle cylinder, the other hand is required to press, the operation is inconvenient, and the liquid discharging efficiency is low, so that the needle cylinder for preparing the reagent and the structure of the related structure of the needle cylinder in the prior art are further improved.

Disclosure of Invention

The utility model aims to solve the technical problem of providing an auxiliary device for preparing a food detection agent, which has good sealing performance, can better keep a microporous filter membrane clean and can apply force easily.

The technical scheme adopted for solving the technical problems is as follows: this an auxiliary device for preparing food detection agent, its characterized in that: the device comprises a mounting cylinder, a sealed shell, a vacuumizing device and a jacket cover device, wherein the mounting cylinder, the sealed shell, the vacuumizing device and the jacket cover device can be sequentially arranged in a sleeved mode, the inner cavity of the shell is divided into an air pumping cavity and a liquid injection cavity, the top of the shell corresponding to the air pumping cavity is provided with an air pumping opening, a switch valve capable of opening and closing the air pumping opening is arranged in the air pumping cavity, the air pumping opening is communicated with an air pumping pipe of the vacuumizing device, a jacket cover inlet is arranged at the bottom of the shell corresponding to the air pumping cavity, the jacket cover inlet is communicated with the liquid injection cavity, a liquid inlet capable of being inserted into a needle cylinder is arranged at the top of the shell corresponding to the liquid injection cavity, a jacket cover mechanism capable of being connected with a collecting bottle is arranged at the bottom of the shell corresponding to the liquid inlet, the jacket cover mechanism is arranged in the liquid injection cavity on one side of the liquid inlet, the jacket cover mechanism can clamp a jacket cover adsorbed at the air pumping opening from the air pumping cavity to the liquid injection cavity, the jacket cover mechanism is connected with a limiting mechanism capable of enabling the jacket cover to be separated from the jacket cover mechanism, the limiting mechanism is connected with the inner wall of the shell, the bottom of the shell is connected with the bottom of the shell, the corresponding to the shell is provided with a sealing plate capable of opening and closing the jacket cover corresponding to the bottom is arranged at the bottom of the opening and can be separated from the bottom of the jacket cover.

As an improvement, the jacket cover device may preferably comprise a jacket cover mechanism, a first cylinder and a second cylinder, wherein the jacket cover mechanism comprises an upper fork rod capable of clamping an upper sleeve of the jacket cover and a lower fork rod capable of supporting a middle convex ring of the jacket cover, through holes capable of penetrating the upper fork rod and the lower fork rod are formed in the limiting mechanism, the upper fork rod is connected with a cylinder rod transmission of the first cylinder through an upper driving rod penetrating the shell, and the lower fork rod is connected with a cylinder rod transmission of the second cylinder through a lower driving rod penetrating the shell.

Further, the first cylinder and the second cylinder may be preferably fixed on a support table outside the housing, a cylinder rod of the first cylinder is connected with the upper driving rod through a first connecting sheet, and a cylinder rod of the second cylinder is connected with the lower driving rod through a second connecting sheet.

As an improvement, the limiting mechanism may be a left limiting block and a right limiting block located at the top of the inner wall of the shell, an upper left through hole and a lower left through hole are formed in the left limiting block, an upper right through hole and a lower right through hole are formed in the right limiting block, the left rod body of the upper fork rod penetrates through the upper left through hole, the right rod body of the upper fork rod penetrates through the upper right through hole, the left rod body of the lower fork rod penetrates through the lower left through hole, and the right rod body of the lower fork rod penetrates through the lower right through hole, wherein the distance between the upper left through hole and the upper right through hole is smaller than the distance between the lower left through hole and the lower right through hole.

As an improvement, the top of the shell corresponding to the liquid inlet can be preferably provided with a syringe plug-in seat.

Further improved, a needle cylinder limit seat can be preferably arranged above the needle cylinder plug seat, and the needle cylinder limit seat is connected with the top of the shell.

As an improvement, the switch valve may preferably include a push block and a third cylinder, the third cylinder is mounted on a bracket outside the housing, a cylinder rod of the third cylinder is connected with the push block, the push block is disposed in a guide hole of a side wall of the housing, and the third cylinder can push the push block to open and close the air extraction opening.

As an improvement, the bottom of the shell corresponding to the cover inlet can be preferably provided with a connecting bulge, the middle part of the connecting bulge is provided with a middle through hole communicated with the cover inlet, and the inner wall of the middle through hole is provided with connecting threads capable of being connected with the mounting cylinder in a threaded manner.

As an improvement, the mounting cylinder may preferably be a transparent cylinder body with the number of inner covers visible, and a cylinder cover capable of sealing and covering the mounting cylinder when the mounting cylinder is removed from the housing is arranged on the top of the transparent cylinder body.

As an improvement, a collecting box which can collect waste covers and filtrate can be preferably arranged on the support below the bottom opening.

Compared with the prior art, the utility model has the advantages that: when the sleeve cover is not sleeved on the needle cylinder, the sleeve cover is placed in the mounting cylinder, so that the sleeve cover is prevented from being exposed in the air, and the cleaning of the sleeve cover is effectively maintained; after the mounting cylinder is mounted on the shell, the sleeve covers are sequentially taken out from the mounting cylinder through the vacuumizing device, and then are sent into the liquid injection cavity through the sleeve cover mechanism of the sleeve cover device to be spliced with the needle cylinder, so that automation of sleeve cover taking operation is realized, sleeve cover taking is convenient, and meanwhile, cleaning of the sleeve covers in the taking process is ensured; the syringe is pulled out after the liquid injection is finished, the sleeve cover is automatically separated from the sleeve cover mechanism due to the limiting mechanism, the collection is convenient, the efficiency is higher, and the liquid injection operation is also more labor-saving.

Drawings

FIG. 1 is a perspective view of an embodiment of the present utility model;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is an exploded view of the structure of FIG. 1;

FIG. 5 is a cross-sectional view of FIG. 1 with portions of the housing removed;

FIG. 6 is a perspective view of the movable push block of FIG. 5;

FIG. 7 is an enlarged view of section I of FIG. 3;

FIG. 8 is an enlarged view of section II of FIG. 5;

FIG. 9 is an enlarged view of section III of FIG. 6;

FIG. 10 is a schematic diagram showing the connection of the upper fork, the upper drive rod and the first cylinder in FIG. 3;

fig. 11 is a perspective view of the syringe as it is nested into the pipette tip;

fig. 12 is a perspective view of the syringe as it is nested into the cap.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

As shown in fig. 1 to 10, the auxiliary device for preparing a food testing agent of the present embodiment includes a mounting cylinder 3 capable of housing a set cover 31, a sealed housing 1, a vacuum extractor 2, and a set cover.

The left half part of the shell 1 is a hollow shell with a rectangular front projection, the inner cavity of the hollow shell is an air extraction cavity 11, the right half part of the shell 1 is a hollow shell with a triangular front projection, and the inner cavity of the hollow shell is a liquid injection cavity 12. The top of left half is provided with an extraction opening 111, extraction opening 111 is linked together with the exhaust tube 21 of vacuum extractor 2, the bottom of left half is provided with connecting protrusion 113, set up the middle part through-hole at connecting protrusion 113, be provided with the connecting screw thread that can spiro union mount section of thick bamboo 3 on the inner wall of middle part through-hole, the bottom opening of middle part through-hole is the cover import 112 of intercommunication mount section of thick bamboo inner chamber, the top threaded connection of mount section of thick bamboo 3 is on connecting protrusion 113's connecting screw thread, the inner chamber and the chamber 11 intercommunication of mount section of thick bamboo 3 at this moment, when extraction opening 111 department is taken out, the cover 31 at the top in mount section of thick bamboo 3 is sucked up and is touched on the roof of casing, the opening size of extraction opening 111 is less than the external diameter size of the upper sleeve 311 of cover 31. The caps 31 are sequentially arranged in the mounting cylinder 3, and the lower cap 31 receives insufficient suction force to float out of the mounting cylinder 3 due to the filtering action of the sucked cap 31.

The mounting cylinder 3 is a transparent cylinder body with the number of the inner sleeve covers 31 visible, and when all the sleeve covers 31 are used up, the mounting cylinder 3 can be replaced with a new one. A cover capable of sealing and covering the mounting cylinder 3 when the mounting cylinder 3 is removed from the housing 1 is provided at the top of the transparent cylinder. When the new installation cylinder 3 is installed, the cylinder cover is firstly taken down, and then the new installation cylinder 3 is screwed on the middle through hole of the connecting bulge 113.

An on-off valve capable of opening and closing the air extraction opening 111 is arranged in the air extraction cavity 11, the on-off valve comprises a push block 71 and a third air cylinder 7, the third air cylinder 7 is arranged on a support 8 outside the shell, an air cylinder rod of the third air cylinder 7 is connected with the push block 71, the push block 71 is arranged in a guide hole on the side wall of the shell, and the third air cylinder 7 can push the push block 71 to open and close the air extraction opening 111.

The air suction cavity 11 of the shell 1 is communicated with the liquid injection cavity 12, a liquid inlet 121 which can be inserted into the syringe 4 is arranged at the top of the right half part of the shell 1, and a syringe plug-in seat 15 is arranged at the top of the shell corresponding to the liquid inlet 121. A needle cylinder limit seat 16 is arranged above the needle cylinder plug seat 15, and the needle cylinder limit seat 16 is connected with the top of the shell 1. The inner ring of the needle cylinder limit seat 16 adopts a soft cushion. The bottom of the right half is provided with a liquid outlet 122 which can be connected with a collection bottle 5, the collection bottle 5 is a liquid chromatography sample injection bottle mentioned in the background art. The liquid inlet 121 is vertically aligned with the liquid outlet 122, and the filtered liquid pushed out from the syringe 1 is directly dropped into the collection bottle 5.

The jacket cover mechanism of the jacket cover device 6 is positioned in the liquid injection cavity 12 at one side of the liquid inlet 121, the jacket cover mechanism can clamp the jacket cover 31 adsorbed at the air extraction opening 111 from the air extraction cavity 11 to the liquid injection cavity 12, the jacket cover mechanism is connected with the limiting mechanism 13 which can separate the jacket cover 31 from the jacket cover mechanism, the limiting mechanism 13 is connected with the inner wall of the shell, the bottom of the shell corresponding to the limiting mechanism 13 is provided with the discharge hopper 14 which can collect the jacket cover 31 separated from the jacket cover mechanism, and the bottom opening 141 of the discharge hopper 14 is provided with a sealing plate which can open and close the bottom opening 141. The closure plate may be inserted over the bottom opening 141 or may be hinged to the side wall of the hopper 14 and provided with a catch at the swinging end of the closure plate. A collecting box 9 capable of collecting the waste cap 31 and the filtrate is provided on the holder 8 below the bottom opening 141.

The jacket cover 6 comprises a jacket cover mechanism, a first cylinder 61 and a second cylinder 62, wherein the jacket cover mechanism comprises an upper fork rod 63 capable of clamping an upper sleeve 311 of the jacket cover 31 and a lower fork rod 64 capable of supporting a middle convex ring 312 of the jacket cover 31, through holes capable of penetrating the upper fork rod 63 and the lower fork rod 64 are formed in the limiting mechanism 13, the upper fork rod 63 is connected with a cylinder rod transmission of the first cylinder 61 through an upper driving rod 65 penetrating the shell 1, and the lower fork rod 64 is connected with a cylinder rod transmission of the second cylinder 62 through a lower driving rod 66 penetrating the shell 1.

The first cylinder 61 and the second cylinder 62 are fixed on a support stand outside the housing, respectively, the cylinder rod of the first cylinder 61 is connected with the upper driving rod 65 through a first connecting sheet, and the cylinder rod of the second cylinder 62 is connected with the lower driving rod 66 through a second connecting sheet.

The stop gear 13 is left stopper and right stopper at shells inner wall top, is provided with upper left through-hole and lower left through-hole on the left stopper, is provided with upper right through-hole and lower right through-hole on the right stopper, and the upper left body of rod of going up fork arm 63 passes upper left through-hole, and the right body of rod of going up fork arm 63 passes upper right through-hole, and the left body of rod of fork arm 64 passes lower left through-hole, and the right body of rod of fork arm 64 passes lower right through-hole, and upper left through-hole and upper right through-hole's interval is less than the interval of lower left through-hole and lower right through-hole.

The specific structure of the vacuum extractor belongs to the known technology, the start, stop and reset of the vacuum extractor 2, the first cylinder 61, the second cylinder 62 and the third cylinder 7 are manually realized through respective switches, and also can be controlled by a unified timing control circuit, and the specific circuit structure and the program design used by the timing control circuit belong to the common control circuit structure and flow, and the specific design is not described in detail.

While the utility model has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims. Moreover, for the purpose of simplifying the drawings, some conventional structures and components are shown in the drawings in a simplified schematic manner.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present utility model are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

The description of "first," "second," etc. in this application is for descriptive purposes only and is not intended to be specifically for purposes of order or sequence, nor is it intended to limit the utility model to the particular use of the same technical term to distinguish between components that are described in the same technical term, but is not to be construed to indicate or imply that they are of relative importance or that the number of technical features indicated is implicitly indicated.

Working principle: in the original filtering operation, the syringe 4 is first sleeved into the rubber sleeve 41, namely the liquid suction head, as shown in fig. 11, and then inserted into the test tube to suck the solution, then the rubber sleeve 41 is removed and the sleeve cover 31 is replaced, as shown in fig. 12, and the filtered liquid filtered by the sleeve cover 31 is injected into the collecting bottle 5.

After the auxiliary device is adopted, the cover 31 is uniformly stored in the mounting cylinder 3, is in a sealed state when not in use, is connected to the sealed shell 1 when in use, and the uppermost cover 31 is extracted through the vacuumizer 2, the cover 31 which is adsorbed is clamped by the cover clamping mechanism, and the pushing block 71 blocks the extraction opening 111.

The clamped cover 31 enters the liquid injection cavity 12 along with the jacket cover mechanism and is aligned with the liquid inlet 121, the needle cylinder 4 of the rubber sleeve 41 is arranged on the needle cylinder inserting seat 15 and is inserted with the cover 31, the needle cylinder piston is pressed to finish solution filtration, and filtered liquid flows into the collecting bottle 5 which is screwed on the liquid outlet 122 from the bottom of the cover 31.

After the filtration is completed, the needle cylinder 4 is pulled out, the lower fork rod 64 is removed firstly, the upper fork rod 63 clamps the sleeve cover 31 to move towards one side of the limiting mechanism, the sleeve cover 31 is separated from the upper fork rod 63 when the lower fork rod 64 is removed or moves to the position of the limiting mechanism along with the upper fork rod 63, falls onto the bottom opening 141 along the discharge hopper 14, and is finally collected by the collecting box 9.

Claims

1. An auxiliary device for preparing a food detection agent, characterized in that: comprises a mounting cylinder (3) capable of being filled with a sleeve cover (31) which are sequentially arranged, a sealed shell (1), a vacuum extractor (2) and a jacket cover, wherein the inner cavity of the shell (1) is divided into an air suction cavity (11) and a liquid injection cavity (12), an air suction opening (111) is arranged at the top of the shell corresponding to the air suction cavity (11), a switch valve capable of opening and closing the air suction opening (111) is arranged in the air suction cavity (11), the air suction opening (111) is communicated with an air suction pipe (21) of the vacuum extractor (2), a sleeve cover inlet (112) is arranged at the bottom of the shell corresponding to the air suction cavity (11), the sleeve cover inlet (112) is communicated with an opening of the mounting cylinder (3), the air suction cavity (11) is communicated with a liquid injection cavity (12), a liquid inlet (121) capable of being inserted into a needle cylinder (4) is arranged at the top of the shell corresponding to the liquid inlet (121), a liquid outlet (122) capable of being connected with a collection bottle (5) is arranged at the bottom of the shell corresponding to the liquid inlet (121), a jacket cover mechanism (6) is positioned at one side of the jacket cover mechanism (31) which can be separated from the jacket cover mechanism (13), the jacket cover mechanism can clamp a jacket cover (31) adsorbed at the air extraction opening (111) from the air extraction cavity (11) to the liquid injection cavity (12), the limiting mechanism (13) is connected with the inner wall of the shell, a discharging hopper (14) which can collect the jacket cover (31) separated from the jacket cover mechanism is arranged at the bottom of the shell corresponding to the limiting mechanism (13), and a sealing plate which can open and close the bottom opening (141) is arranged on the bottom opening (141) of the discharging hopper (14).

2. The auxiliary device for preparing a food detection agent according to claim 1, wherein: the jacket cover device (6) comprises a jacket cover mechanism, a first cylinder (61) and a second cylinder (62), wherein the jacket cover mechanism comprises an upper fork rod (63) capable of clamping an upper sleeve (311) of a jacket cover (31) and a lower fork rod (64) capable of supporting a middle convex ring (312) of the jacket cover (31), a through hole capable of penetrating the upper fork rod (63) and the lower fork rod (64) is formed in the limiting mechanism (13), the upper fork rod (63) is connected with the cylinder rod transmission of the first cylinder (61) through an upper driving rod (65) penetrating a shell (1), and the lower fork rod (64) is connected with the cylinder rod transmission of the second cylinder (62) through a lower driving rod (66) penetrating the shell (1).

3. The auxiliary device for preparing a food detection agent according to claim 2, wherein: the first air cylinder (61) and the second air cylinder (62) are respectively fixed on a support table outside the shell, an air cylinder rod of the first air cylinder (61) is connected with the upper driving rod (65) through a first connecting sheet, and an air cylinder rod of the second air cylinder (62) is connected with the lower driving rod (66) through a second connecting sheet.

4. A supplementary device for preparing a food detection agent according to claim 2 or 3, characterized in that: the limiting mechanism (13) is a left limiting block and a right limiting block which are positioned at the top of the inner wall of the shell, an upper left through hole and a lower left through hole are formed in the left limiting block, an upper right through hole and a lower right through hole are formed in the right limiting block, the left rod body of the upper fork rod (63) penetrates through the upper left through hole, the right rod body of the upper fork rod (63) penetrates through the upper right through hole, the left rod body of the lower fork rod (64) penetrates through the lower left through hole, the right rod body of the lower fork rod (64) penetrates through the lower right through hole, and the distance between the upper left through hole and the upper right through hole is smaller than the distance between the lower left through hole and the lower right through hole.

5. A supplementary device for preparing a food detection agent according to any one of claims 1 to 3, characterized in that: the top of the shell corresponding to the liquid inlet (121) is provided with a syringe plug-in seat (15).

6. The auxiliary device for preparing a food detection agent according to claim 5, wherein: a needle cylinder limiting seat (16) is arranged above the needle cylinder inserting seat (15), and the needle cylinder limiting seat (16) is connected with the top of the shell (1).

7. A supplementary device for preparing a food detection agent according to any one of claims 1 to 3, characterized in that: the on-off valve comprises a push block (71) and a third air cylinder (7), wherein the third air cylinder (7) is arranged on a support (8) on the outer side of the shell, an air cylinder rod of the third air cylinder (7) is connected with the push block (71), the push block (71) is arranged in a guide hole on the side wall of the shell, and the third air cylinder (7) can push the push block (71) to open and close the air extraction opening (111).

8. A supplementary device for preparing a food detection agent according to any one of claims 1 to 3, characterized in that: the shell bottom corresponding to the cover inlet (112) is provided with a connecting bulge (113), the middle part of the connecting bulge (113) is provided with a middle through hole communicated with the cover inlet (112), and the inner wall of the middle through hole is provided with connecting threads capable of being connected with the mounting cylinder (3) in a threaded mode.

9. A supplementary device for preparing a food detection agent according to any one of claims 1 to 3, characterized in that: the mounting cylinder (3) is a transparent cylinder body with the number of the inner sleeve covers (31) being visible, and the top of the transparent cylinder body is provided with a cylinder cover which can seal and cover the mounting cylinder (3) when the mounting cylinder (3) is removed from the shell (1).

10. A supplementary device for preparing a food detection agent according to any one of claims 1 to 3, characterized in that: a cover (31) capable of collecting waste and a collecting box (9) for filtering liquid are arranged on the bracket (8) below the bottom opening (141).