CN113856783A

CN113856783A - Food inspection ultrasonic cavitation liquid-transfering device

Info

Publication number: CN113856783A
Application number: CN202111458965.1A
Authority: CN
Inventors: 许莉; 孟千军; 王忻
Original assignee: Weifang Inspection And Testing Center
Current assignee: Weifang Inspection And Testing Center
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2021-12-31

Abstract

The invention relates to the technical field of food inspection equipment and discloses an ultrasonic cavitation liquid transfer device for food inspection, which comprises a pipette, wherein the inside of the pipette is slidably connected with a plunger assembly, the outside of the pipette is movably connected with a counting mechanism, the bottom of the side wall of the pipette is slidably connected with a liquid suction assembly, the bottom of the side wall of the pipette is fixedly connected with a syringe, and the bottom of the side wall of the pipette is fixedly connected with an ultrasonic generator; make the inside bubble of pipette take place cavitation through ultrasonic generator, through ultrasonic generator's effect, effectively get rid of the air of dissolving in food inside simultaneously, effectively improve the effect of getting rid of the inside bubble of food, get rid of the air of dissolving simultaneously, avoid the air of dissolving in the testing process to separate out and produce bubble once more and influence the testing effect, and when cavitation takes place, advance to reach the effect of disinfecting through cavitation, thereby effectively reduce the influence factor that food detected, improve the accuracy that food detected.

Description

Food inspection ultrasonic cavitation liquid-transfering device

Technical Field

The invention relates to the technical field of food inspection equipment, in particular to an ultrasonic cavitation liquid-transferring device for food inspection.

Background

When liquid food is processed, liquid food is required to be subjected to liquid transfer treatment generally, and because liquid food is usually in a sticky state, a large amount of gas is often generated in the liquid food in the processing process, in order to eliminate the influence of bubbles on food detection, long-time standing treatment is generally required to be performed, and bubbles in the liquid food are naturally dissipated, so that the detection efficiency is low, and the bubbles are still not completely eliminated after the standing treatment, so that the accuracy of a detection result is influenced.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the ultrasonic cavitation liquid transfer device for food inspection, which has the advantages of accurate liquid transfer, accurate digital display of liquid transfer amount, effective elimination of internal bubbles and guarantee of detection accuracy.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a food inspection ultrasonic cavitation liquid-transfering device, including the pipette, the holding ring, the plunger subassembly, the plunger rod, the loop bar, the dog, the screens groove, the count gear, the plunger head, the exhaust chamber, the sprue, the connecting rod, lower briquetting, go up the briquetting, counting mechanism, the digit ring, interior ring gear, the all-gear, the connecting axle, sector gear, interior locating lever, the transition tooth post, the main shaft pole, the bracing axle pole, the master gear, the axostylus axostyle resets, the transition gear, the imbibition subassembly, the imbibition slider, the imbibition needle tubing, the intercommunication piece, the syringe, the check valve piece, ultrasonic generator.

The positions and the connection relations of the structures are as follows:

the inner part of the pipette is connected with a plunger assembly in a sliding manner, the outer part of the pipette is movably connected with a counting mechanism, the bottom of the side wall of the pipette is connected with a liquid suction assembly in a sliding manner, the bottom of the side wall of the pipette is fixedly connected with an injection tube, the bottom of the side of the pipette is fixedly connected with an ultrasonic generator, and the side part of the pipette is provided with a long and narrow opening for transparent observation;

the plunger assembly comprises a plunger rod, the outer part of the plunger rod is connected with a loop bar in a threaded manner, the top of the loop bar is rotatably connected with a counting gear, a limiting sliding block is arranged on the inner side of the counting gear, a vertical limiting sliding groove is formed in the side wall of the plunger rod, the limiting sliding block is connected in the limiting sliding groove in a sliding manner, and the bottom of the plunger rod is fixedly connected with a plunger head;

the counting mechanism comprises a digital ring, an inner gear ring is fixedly connected to the inner wall of the digital ring, an inner side of the inner gear ring is meshed with a full gear, a connecting shaft is fixedly connected to the outer portion of the full gear, a sector gear is fixedly connected to the outer portion of the connecting shaft, a transition tooth post is meshed with the outer portion of the sector gear, a main shaft rod is fixedly connected to the outer portion of the transition tooth post, a main gear is sleeved on the outer portion of the main shaft rod, a reset shaft rod is fixedly connected to the outer portion of the main gear, and a transition gear is meshed with the outer portion of the main gear;

and when the sleeve rod is positioned at the inner vertex position of the pipette, the transition gear is meshed with the counting gear.

Preferably, the inboard fixedly connected with holding ring of pipette, the internal diameter of holding ring and the external diameter adaptation of loop bar, and be provided with radial limit structure between holding ring and the loop bar, the outside fixedly connected with dog of loop bar, the screens groove has been seted up to the lateral wall of loop bar, the screens groove is located the top of dog, the inside fixedly connected with clamping ring of holding ring, and when the bottom butt of dog and holding ring, the clamping ring joint is in the inside in screens groove, the loop bar takes place radial spacing unable commentaries on classics rotation because of radial limit structure with the holding ring simultaneously.

Preferably, screens ring sum screens groove is elastic clamping, can break away from and get into the joint under the effect of external force, radial limit structure sets up to radial stopper and spacing groove.

Preferably, the vent chamber has been seted up to plunger head bottom, and the inside swing joint in vent chamber has the sprue, and the intercommunicating pore has been seted up to the inside of plunger rod, and vent chamber and exterior space are connected to the intercommunicating pore, the top fixedly connected with connecting rod of sprue, connecting rod swing joint is in the inside of intercommunicating pore, the top fixedly connected with of connecting rod goes up the briquetting, the top fixedly connected with of plunger rod is briquetting down.

Preferably, the outer diameter of the connecting rod is smaller than the inner diameter of the communicating hole.

Preferably, the connecting shafts are provided with four groups, the inside of each connecting shaft is rotatably connected with an inner positioning rod, the four groups of connecting shafts are sequentially arranged on the upper portion and the lower portion of the outside of the inner positioning rod, the inner positioning rods are fixedly connected with the pipette, the four groups of transition tooth columns are provided with four groups of connecting shafts, the four groups of transition tooth columns are sequentially arranged on the upper portion and the lower portion, the uppermost transition tooth column is fixedly connected with the main shaft rod, and the inside of the three groups of lower transition tooth columns is movably connected with a supporting shaft rod which is fixedly connected with the pipette.

Preferably, the upper and lower both ends of three groups of top of connecting axle respectively with full gear, sector gear fixed connection, the top fixedly connected with full gear of below connecting axle, the full gear and the sector gear dislocation at connecting axle both ends and the meshing of different transition tooth post are connected, the digit ring is provided with four groups, and the inside inner gear ring of every digit ring all is connected with full gear meshing.

Preferably, the transmission ratio formed by the inner gear ring, the full gear, the sector gear and the transition gear column is that the upper digit ring rotates for one circle, the lower digit ring rotates for one tenth of a circle, and the transmission ratio of the counting gear, the transition gear, the main gear, the top transition gear column, the top full gear and the top inner gear ring is that the plunger rod rotates to push a unit volume space downwards, and the top inner gear ring rotates for one tenth of a circle.

Preferably, the imbibition subassembly includes imbibition slider and imbibition needle tubing, imbibition needle tubing fixed connection is in the bottom of imbibition slider, and imbibition slider sliding connection is in the lateral wall bottom of pipette, the bottom fixedly connected with intercommunication piece of pipette, the inside liquid-transfering through-hole of having seted up of intercommunication piece, when the imbibition slider removes to the pipette bottom side, intercommunication piece intercommunication pipette and imbibition needle tubing, when the imbibition slider moved to pipette upper portion, the sealed liquid-transfering through-hole export of intercommunication piece of imbibition slider.

Preferably, a one-way valve plate is arranged between the injection tube and the pipette, the direction limited by the one-way valve plate is used for controlling liquid to flow outwards in a one-way mode, and the one-way valve plate is opened by applying pressure.

Has the advantages that:

1. this food inspection ultrasonic cavitation moves liquid device, make the inside bubble of pipette take place cavitation through ultrasonic generator, through ultrasonic generator's effect, effectively get rid of the air of dissolving in food inside simultaneously, effectively improve the effect of getting rid of the inside bubble of food, get rid of the air of dissolving simultaneously, avoid dissolved air in the testing process to separate out and produce bubble once more and influence the testing effect, and when cavitation takes place, advance to reach the effect of disinfecting through cavitation, thereby effectively reduce the influence factor that food detected, improve the accuracy that food detected.

2. This food inspection ultrasonic cavitation moves liquid device, make imbibition and move liquid through two needle tubing parts through setting up imbibition needle tubing and syringe and go on, avoid carrying out the bubble through ultrasonic generrator when eliminating, the imbibition needle tubing is because not in ultrasonic generrator working range, therefore can't eliminate its inside tiny bubble, avoid accomplishing the moving liquid that food detected through the imbibition needle tubing once more, with the inside bubble injection of imbibition needle tubing like food detection test tube, thereby influence the effect that the bubble was eliminated, distinguish the injection through the syringe, further guarantee that injection food is inside does not contain the bubble, thereby reduce the influence of bubble to food testing result.

3. This food inspection ultrasonic cavitation moves liquid device, in-process through the rotatory downward removal of plunger rod, the plunger rod drives the rotation of count gear, count gear passes through transition gear and master gear and drives the main shaft pole and rotate, the main shaft pole drives the transition tooth post and rotates, the transition tooth post drives full gear revolve, full gear passes through the connecting axle and drives sector gear revolve, then sector gear drives down one-level transition tooth post and rotates, the digital ring is driven in-process to full gear revolve simultaneously, then carry out accurate liquid-transfering amount show by the digital ring, be convenient for audio-visual demonstration liquid-transfering's capacity, and move down the volume through plunger rod and loop bar threaded connection control, further guarantee the accuracy that the control moved liquid, reach the effect of accurate liquid-transfering.

4. This food inspection ultrasonic cavitation moves liquid device, when moving liquid to the second test tube, both conveniently calculate the volume of instiling into of moving liquid for the second time through the stack of digit, also conveniently through upwards pulling the reduction axostylus axostyle, make master gear and transition gear disengage the meshing, make the digit ring zero reset through rotating the reduction axostylus axostyle, will control master gear and transition gear meshing through the reduction axostylus axostyle, thereby conveniently count from new skill, avoid the trouble of calculation, reduce the use degree of difficulty, effectively improve the device's result of use.

Drawings

FIG. 1 is a schematic view of the overall appearance of the structure of the present invention;

FIG. 2 is a schematic cross-sectional view of the upper portion of a pipette in accordance with the teachings of the present invention;

FIG. 3 is an enlarged view of part A of FIG. 2 according to the present invention;

FIG. 4 is an enlarged view of part B of FIG. 2 according to the present invention;

FIG. 5 is a schematic view of a structural loop bar of the present invention;

FIG. 6 is a schematic view of the counting mechanism of the present invention;

FIG. 7 is a schematic view of the arrangement of the present invention showing the connection of the full gear, the connecting shaft and the sector gear;

fig. 8 is a schematic view of the lower section of a pipette in accordance with the teachings of the present invention.

In the figure: 1. a pipette; 11. a positioning ring; 2. a plunger assembly; 21. a plunger rod; 22. a loop bar; 221. a stopper; 222. a clamping groove; 23. a counting gear; 24. a plunger head; 25. an exhaust chamber; 26. blocking; 27. a connecting rod; 28. pressing the block; 29. pressing the blocks; 3. a counting mechanism; 31. a digital ring; 32. an inner gear ring; 33. all-gear; 34. a connecting shaft; 35. a sector gear; 36. an inner positioning rod; 37. a transition tooth post; 38. a main shaft rod; 39. a support shaft; 310. a main gear; 311. resetting the shaft lever; 312. a transition gear; 4. a wicking assembly; 41. a liquid suction slide block; 42. a liquid suction needle tube; 5. a communicating block; 6. an injection tube; 61. a one-way valve plate; 7. an ultrasonic generator.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.

Referring to fig. 1-8, an ultrasonic cavitation liquid-transfering device for food inspection comprises a liquid-transfering tube 1, a liquid-transfering component 4, a communicating block 5, a syringe 6 and an ultrasonic generator 7.

The positions and the connection relations of the structures are as follows:

the inner part of the pipette 1 is connected with a plunger assembly 2 in a sliding way, the outer part of the pipette 1 is movably connected with a counting mechanism 3, the bottom of the side wall of the pipette 1 is connected with a liquid suction assembly 4 in a sliding way, the bottom of the side wall of the pipette 1 is fixedly connected with a syringe 6, the bottom of the side of the pipette 1 is fixedly connected with an ultrasonic generator 7, and the side part of the pipette 1 is provided with a long and narrow opening for transparent observation;

wherein, imbibition subassembly 4 includes imbibition slider 41 and imbibition needle tubing 42, imbibition needle tubing 42 fixed connection is in the bottom of imbibition slider 41, imbibition slider 41 sliding connection is in the lateral wall bottom of pipette 1, the bottom fixedly connected with intercommunication piece 5 of pipette 1, the inside liquid-moving through-hole that has seted up of intercommunication piece 5, when imbibition slider 41 moves to pipette 1 bottom side, intercommunication piece 5 communicates pipette 1 and imbibition needle tubing 42, when imbibition slider 41 moves to pipette 1 upper portion, the sealed liquid-moving through-hole export of intercommunication piece 5 of imbibition slider 41.

When liquid needs to be transferred, the liquid absorption sliding block 41 slides downwards to enable the liquid absorption needle tube 42 to be communicated with the inside of the pipette 1 through the communicating block 5, at the moment, the plunger assembly 2 is located at the bottom of the pipette 1, the liquid absorption needle tube 42 is inserted into liquid food, the plunger rod 21 is pulled upwards, the plunger rod 21 drives the plunger head 24 to move upwards to absorb the liquid food, and the primary operation is completed.

The plunger assembly 2 comprises a plunger rod 21, a loop bar 22, a stopper 221, a blocking groove 222, a counting gear 23, a plunger head 24, an exhaust cavity 25, a blocking block 26, a connecting rod 27, a lower pressing block 28 and an upper pressing block 29.

The plunger assembly 2 is connected in the following way:

the outer part of the plunger rod 21 is connected with a loop rod 22 in a threaded manner, the top of the loop rod 22 is rotatably connected with a counting gear 23, a limiting sliding block is arranged on the inner side of the counting gear 23, a vertical limiting sliding groove is formed in the side wall of the plunger rod 21, the limiting sliding block is connected in the limiting sliding groove in a sliding manner, and the bottom of the plunger rod 21 is fixedly connected with a plunger head 24;

in the process of moving the plunger rod 21 upwards, until the stopper 221 abuts against the positioning ring 11, the detent groove 222 and the detent ring are clamped, and the primary positioning of the plunger rod 21 is completed. At the moment, the sleeve rod 22 is located at the bottom of the plunger rod 21, the sleeve rod 22 is inserted into the positioning ring 11, and meanwhile, the sleeve rod 22 and the positioning ring 11 generate radial limit, and the sleeve rod 22 cannot rotate inside the positioning ring 11.

When the liquid suction slide block 41 is moved upward, the liquid outlet of the communicating block 5 and the liquid inlet of the liquid suction needle tube 42 are staggered to complete the sealing of the liquid suction path.

Wherein, the vent chamber 25 has been seted up to plunger head 24 bottom, and the inside swing joint in vent chamber 25 has sprue 26, and the intercommunicating pore has been seted up to the inside of plunger rod 21, and vent chamber 25 and exterior space are connected to the intercommunicating pore, and the top fixedly connected with connecting rod 27 of sprue 26, connecting rod 27 swing joint are in the inside of intercommunicating pore, and briquetting 29 is gone up to the top fixedly connected with of connecting rod 27, and briquetting 28 under the top fixedly connected with of plunger rod 21.

Wherein the outer diameter of the connecting rod 27 is smaller than the inner diameter of the communication hole.

Wherein, the inboard fixedly connected with holding ring 11 of pipette 1, the internal diameter of holding ring 11 and the external diameter adaptation of loop bar 22, and be provided with radial limit structure between holding ring 11 and the loop bar 22, the outside fixedly connected with dog 221 of loop bar 22, screens groove 222 has been seted up to the lateral wall of loop bar 22, screens groove 222 is located the top of dog 221, the inside fixedly connected with screens ring of holding ring 11, and when the bottom butt of dog 221 with holding ring 11, the screens ring joint is in the inside of screens groove 222, loop bar 22 takes place radial spacing unable commentaries on classics rotation because of radial limit structure with holding ring 11 simultaneously.

The clamping ring and the clamping groove 222 are elastically clamped and can be separated from and clamped into the clamping groove under the action of external force, and the radial limiting structure is a radial limiting block and a limiting groove.

The upper pressing block 29 is shifted upwards to separate the upper pressing block 29 from the lower pressing block 28, the upper pressing block 29 drives the blocking block 26 to move upwards in the exhaust cavity 25 through the connecting rod 27, the exhaust cavity 25 is communicated with the inside of the pipette 1 in the upward moving process of the blocking block 26 due to the fact that the shape of the interface of the exhaust cavity 25 and the blocking block 26 is in a trapezoidal design, and air exists inside the pipette needle tube 42 in the initial state in the imbibing process, so that air exists at the top of the liquid level inside the pipette 1 and before the plunger head 24 in the imbibing process. When the air vent chamber 25 is communicated with the interior of the pipette 1, the air on the top of the liquid level inside the pipette 1 is communicated with the outside air through the air vent chamber 25, the communication hole of the plunger rod 21.

Start ultrasonic generator 7, make the inside bubble of pipette 1 take place cavitation through ultrasonic generator 7, through ultrasonic generator 7's effect, effectively get rid of simultaneously and dissolve in the inside air of food, effectively improve the effect of getting rid of the inside bubble of food, get rid of the air that dissolves simultaneously, avoid the dissolved air in the testing process to separate out and produce the bubble once more and influence the testing effect.

After the work of ultrasonic generator 7 is ended, through rotating plunger rod 21, because plunger rod 21 and loop bar 22 threaded connection, loop bar 22 is at the inside radial spacing joint of holding ring 11, thereby only the plunger rod 21 folk prescription rotates, thereby plunger rod 21 spiral moves down, and through screw thread rotary drive, reach accurate control's effect, observe through the transparent observation mouth that pipette 1 set up, when clearing with the inside air of pipette 1, briquetting 29 is gone up in the downward pressure, make briquetting 29 and the coincidence of briquetting 28 down, the exhaust chamber 25 is sealed again to the sprue 26 this moment, then pipette 1 is inside to become the seal chamber once more.

The counting mechanism 3 comprises a digital ring 31, an inner gear ring 32, a full gear 33, a connecting shaft 34, a sector gear 35, an inner positioning rod 36, a transition gear column 37, a spindle rod 38, a supporting shaft rod 39, a main gear 310, a reset shaft rod 311 and a transition gear 312.

The counting mechanism 3 is connected as follows:

an inner gear ring 32 is fixedly connected to the inner wall of the digital ring 31, a full gear 33 is meshed and connected to the inner side of the inner gear ring 32, a connecting shaft 34 is fixedly connected to the outer portion of the full gear 33, a sector gear 35 is fixedly connected to the outer portion of the connecting shaft 34, a transition tooth column 37 is meshed and connected to the outer portion of the sector gear 35, a main shaft rod 38 is fixedly connected to the outer portion of the transition tooth column 37, a main gear 310 is sleeved on the outer portion of the main shaft rod 38, a reset shaft rod 311 is fixedly connected to the outer portion of the main gear 310, and a transition gear 312 is meshed and connected to the outer portion of the main gear 310; and when the sleeve rod 22 is located at the top position inside the pipette 1, the transition gear 312 and the counting gear 23 are in meshed connection.

Wherein, be provided with one-way valve block 61 between syringe 6 and the pipette 1, one-way valve block 61 restriction direction is for controlling the one-way outside flow of liquid, and one-way valve block 61 is opened through exerting pressure.

The plunger rod 21 is continuously rotated to enable the liquid to extrude and open the one-way valve sheet 61 to enter the injection tube 6, when the liquid reaches the tip of the injection tube 6, the reset shaft lever 311 is controlled to move downwards to enable the main gear 310 and the transition gear 312 to be meshed and connected, meanwhile, when the stopper 221 of the loop bar 22 is abutted to the positioning ring 11, the counting gear 23 is meshed and connected with the transition gear 312, because the inner side of the counting gear 23 is provided with the limit slider, the side wall of the plunger rod 21 is provided with a vertical limit sliding chute, the limit slider is connected in the limit sliding chute in a sliding manner, in the process that the plunger rod 21 moves downwards by rotation, the plunger rod 21 drives the counting gear 23 to rotate, the counting gear 23 drives the main shaft 38 to rotate through the transition gear 312 and the main gear 310, the main shaft 38 drives the transition toothed column 37 to rotate, the transition toothed column 37 drives the full gear 33 to rotate, and the full gear 33 drives the sector gear 35 to rotate through the connecting shaft 34, the sector gear 35 drives the next stage transition tooth post 37 to rotate, and simultaneously drives the number rings 31 in the process of rotating the full gear 33, and each number ring 31 can have 0-9 numbers at the ten-divided positions.

The four connecting shafts 34 are provided with four groups, the inner parts of the four connecting shafts 34 are rotatably connected with inner positioning rods 36, the four connecting shafts 34 are sequentially arranged on the outer parts of the inner positioning rods 36 from top to bottom, the inner positioning rods 36 are fixedly connected with the pipette 1, the transition tooth columns 37 are provided with four groups, the four groups of transition tooth columns 37 are sequentially arranged from top to bottom, the uppermost transition tooth column 37 is fixedly connected with a spindle rod 38, and the lower three groups of transition tooth columns 37 are movably connected with supporting shaft rods 39 which are fixedly connected with the pipette 1.

The upper ends and the lower ends of the three groups above the connecting shaft 34 are fixedly connected with the full gear 33 and the sector gear 35 respectively, the top end of the connecting shaft 34 at the lowest part is fixedly connected with the full gear 33, the full gears 33 and the sector gears 35 at the two ends of the connecting shaft 34 are in staggered and meshed connection with different transition tooth columns 37, the number rings 31 are provided with four groups, and the inner tooth rings 32 in each number ring 31 are meshed and connected with the full gear 33.

The transmission ratio of the internal gear ring 32, the full gear 33, the sector gear 35 and the transition gear 37 is that the upper digit ring 31 rotates one circle, the lower digit ring 31 rotates one tenth of a circle, the transmission ratio of the counting gear 23, the transition gear 312, the main gear 310, the top transition gear 37, the top full gear 33 and the top internal gear ring 32 is that the plunger rod 21 rotates to push one unit volume space downwards, and the top internal gear ring 32 rotates one tenth of a circle.

Meanwhile, the transmission ratio formed by the inner gear ring 32, the full gear 33, the sector gear 35 and the transition gear 37 is that the upper digit ring 31 rotates for one circle, the lower digit ring 31 rotates for one tenth circle, the transmission ratio of the counting gear 23, the transition gear 312, the main gear 310, the top transition gear 37, the top full gear 33 and the top inner gear ring 32 is that the plunger rod 21 rotates to push a unit volume space downwards, and the top inner gear ring 32 rotates for one tenth circle, so that the dropping amount of the pipetting is accurately known through reading, and the pipetting accuracy is effectively ensured.

When the liquid is transferred to the second test tube, the dripping amount of the second liquid transfer is conveniently calculated through superposition of numbers, the reset shaft lever 311 is pulled upwards, the main gear 310 and the transition gear 312 are disengaged, the reset shaft lever 311 is rotated to return the digital ring 31 to zero and reset, and the main gear 310 and the transition gear 312 are controlled to be engaged through the reset shaft lever 311, so that the counting is conveniently carried out according to the new technology, the calculation trouble is avoided, the use difficulty is reduced, and the use effect of the device is effectively improved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An ultrasonic cavitation liquid-transfering device for food inspection, which comprises a liquid-transfering tube (1), and is characterized in that: the inner part of the pipette (1) is connected with a plunger assembly (2) in a sliding manner, the outer part of the pipette (1) is movably connected with a counting mechanism (3), the bottom of the side wall of the pipette (1) is connected with a liquid suction assembly (4) in a sliding manner, the bottom of the side wall of the pipette (1) is fixedly connected with a syringe (6), the bottom of the side of the pipette (1) is fixedly connected with an ultrasonic generator (7), and the side part of the pipette (1) is provided with a long and narrow opening for transparent observation;

the plunger assembly (2) comprises a plunger rod (21), the outer part of the plunger rod (21) is connected with a sleeve rod (22) in a threaded manner, the top of the sleeve rod (22) is rotatably connected with a counting gear (23), a limiting slide block is arranged on the inner side of the counting gear (23), a vertical limiting slide groove is formed in the side wall of the plunger rod (21), the limiting slide block is connected in the limiting slide groove in a sliding manner, and the bottom of the plunger rod (21) is fixedly connected with a plunger head (24);

the counting mechanism (3) comprises a digital ring (31), an inner gear ring (32) is fixedly connected to the inner wall of the digital ring (31), a full gear (33) is meshed and connected to the inner side of the inner gear ring (32), a connecting shaft (34) is fixedly connected to the outer portion of the full gear (33), a sector gear (35) is fixedly connected to the outer portion of the connecting shaft (34), a transition tooth column (37) is meshed and connected to the outer portion of the sector gear (35), a main shaft rod (38) is fixedly connected to the outer portion of the transition tooth column (37), a main gear (310) is sleeved on the outer portion of the main shaft rod (38), a reset shaft rod (311) is fixedly connected to the outer portion of the main gear (310), and a transition gear (312) is meshed and connected to the outer portion of the main gear (310);

and when the sleeve rod (22) is positioned at the inner top position of the pipette (1), the transition gear (312) is meshed with the counting gear (23).

2. The ultrasonic cavitation pipetting device for food inspection according to claim 1, characterized in that: the inboard fixedly connected with holding ring (11) of pipette (1), the internal diameter of holding ring (11) and the external diameter adaptation of loop bar (22), and be provided with radial limit structure between holding ring (11) and loop bar (22), outside fixedly connected with dog (221) of loop bar (22), screens groove (222) have been seted up to the lateral wall of loop bar (22), screens groove (222) are located the top of dog (221), the inside fixedly connected with screens ring of holding ring (11), and when the bottom butt of dog (221) and holding ring (11), the inside at screens groove (222) is blocked to the screens ring, simultaneously loop bar (22) and holding ring (11) take place radial spacing unable rotation to the rotation because of radial limit structure.

3. The ultrasonic cavitation pipetting device for food inspection according to claim 2, characterized in that: the clamping ring and the clamping groove (222) are in elastic clamping connection and can be separated from and enter the clamping connection under the action of external force, and the radial limiting structure is arranged into a radial limiting block and a limiting groove.

4. The ultrasonic cavitation pipetting device for food inspection according to claim 1, characterized in that: air discharge chamber (25) have been seted up to plunger head (24) bottom, the inside swing joint in air discharge chamber (25) has sprue (26), and the intercommunicating pore has been seted up to the inside of plunger rod (21), air discharge chamber (25) and exterior space are connected to the intercommunicating pore, the top fixedly connected with connecting rod (27) of sprue (26), connecting rod (27) swing joint is in the inside of intercommunicating pore, briquetting (29) on the top fixedly connected with of connecting rod (27), briquetting (28) under the top fixedly connected with of plunger rod (21).

5. The ultrasonic cavitation pipetting device for food inspection according to claim 4, characterized in that: the outer diameter of the connecting rod (27) is smaller than the inner diameter of the communicating hole.

6. The ultrasonic cavitation pipetting device for food inspection according to claim 1, characterized in that: connecting axle (34) are provided with four groups, and four groups the inside of connecting axle (34) is rotated and is connected with interior locating lever (36), and four groups connecting axle (34) are arranged in proper order from top to bottom including the outside of locating lever (36), interior locating lever (36) and pipette (1) fixed connection, transition column gear (37) are provided with four groups, and four groups transition column gear (37) are arranged in proper order from top to bottom, and top transition column gear (37) and spindle rod (38) fixed connection, and the inside swing joint of three groups transition column gear (37) in below has supporting shaft pole (39), supporting shaft pole (39) and pipette (1) fixed connection.

7. The ultrasonic cavitation pipetting device for food inspection according to claim 6, characterized in that: the upper and lower both ends of three groups of top of connecting axle (34) respectively with full gear (33), sector gear (35) fixed connection, the top fixedly connected with full gear (33) of below connecting axle (34), full gear (33) and sector gear (35) dislocation and different transition tooth post (37) meshing connection at connecting axle (34) both ends, digit ring (31) are provided with four groups, and the inside interior ring gear (32) of every digit ring (31) all is connected with full gear (33) meshing.

8. The ultrasonic cavitation pipetting device for food inspection according to claim 7, characterized in that: the transmission ratio formed by the inner gear ring (32), the full gear (33), the sector gear (35) and the transition gear column (37) is that the upper digit ring (31) rotates for one circle, then the lower digit ring (31) rotates for one tenth of a circle, the transmission ratio of the counting gear (23), the transition gear (312), the main gear (310), the top transition gear column (37), the top full gear (33) and the top inner gear ring (32) is that the plunger rod (21) rotates to push a unit volume space downwards, and then the top inner gear ring (32) rotates for one tenth of a circle.

9. The ultrasonic cavitation pipetting device for food inspection according to claim 1, characterized in that: imbibition subassembly (4) are including imbibition slider (41) and imbibition needle tubing (42), imbibition needle tubing (42) fixed connection is in the bottom of imbibition slider (41), and imbibition slider (41) sliding connection is in the lateral wall bottom of pipette (1), the bottom fixedly connected with intercommunication piece (5) of pipette (1), intercommunication piece (5) inside has seted up and has moved liquid through-hole, when imbibition slider (41) remove to pipette (1) bottom side, intercommunication piece (5) intercommunication pipette (1) and imbibition needle tubing (42), when imbibition slider (41) moves to pipette (1) upper portion, the liquid through-hole export that moves liquid through-hole of sealed intercommunication piece (5) of imbibition slider (41).

10. The ultrasonic cavitation pipetting device for food inspection according to claim 1, characterized in that: a one-way valve plate (61) is arranged between the injection tube (6) and the pipette (1), the direction limited by the one-way valve plate (61) is used for controlling liquid to flow outwards in a one-way mode, and the one-way valve plate (61) is opened by applying pressure.