CN218465776U - Handheld automatic liquid gun that is equipped with - Google Patents

Abstract

The utility model discloses a handheld automatic liquid rifle of being equipped with, handheld automatic liquid rifle of being equipped with is including the propelling movement barral of a gun that sets gradually, arrange helical pitch pole, connection lid, a helical pitch section of thick bamboo in the propelling movement barral of a gun in, arrange helical pitch subassembly, front end housing in a helical pitch section of thick bamboo in, install a piston section of thick bamboo on the front end housing, move back the gun case and move liquid rifle head. Install one or more pipette head on corresponding piston cylinder, promote the piston rod on the helical pitch subassembly through the helical pitch pole and remove in piston cylinder, thereby accomplish the absorption to the solution, and the accessible moves back the gun case and pushes away from a plurality of pipette heads from piston cylinder, with solve prior art in succession, the biological solution droplet size inequality that easily appears when preparing biological solution droplet fast, cultivate the problem of the undersize of droplet, also solve the complicated problem of large-scale automatic liquid preparation device operation simultaneously, just the utility model discloses the processing simple manufacture of handheld automatic liquid preparation rifle, small, the application scene is more nimble, the operation more accords with operating personnel's operation custom and cost reduce by a wide margin.

Description

Handheld automatic liquid gun that is equipped with

Technical Field

The utility model belongs to the technical field of the biomedical sample preparation, concretely relates to handheld automatic liquid rifle that is equipped with.

Background

At present, the solution preparation in hospitals is finished manually, and a large amount of solution preparation operation occupies most of the time of operators. The process of preparing the liquid generally requires two doctors to cooperate, and the manual operation of long-time mechanical repetition is very labor-consuming. And in the process of continuously preparing a plurality of droplets of biological solution in one culture dish, the following problems are encountered: because the area of the operating surface at the bottom of the culture dish is limited, the sizes of the biological solution droplets continuously and quickly prepared are not uniform due to different working experiences and proficiency of operators, the sizes of the culture droplets are not favorable for culturing biological materials, the culture droplets are too small and are not favorable for contacting walls to collapse or are fused with adjacent droplets, even if the operators are skilled, the prepared biological solution droplets can have the problems of nonuniform volumes and irregular arrangement, the whole process is time-consuming and labor-consuming, the efficiency is low, and the quality control of a culture system is not favorable. Meanwhile, the commercial liquid preparation devices in the current market are few and are complex and large-scale automatic devices. The liquid preparation process needs to maintain an aseptic environment, the whole process is finished in a super clean bench, and large-scale equipment is not superior in space utilization and is not flexible. The large-scale automatic liquid preparation device is high in selling price and needs regular training and maintenance.

Patent publication No. CN112175825A discloses an automatic liquid preparation instrument. The liquid preparation instrument comprises a liquid preparation mechanism, a transfer mechanism and an incubator, wherein the liquid preparation mechanism is used for completing liquid preparation operation to obtain a finished product, and the transfer mechanism is used for placing the finished product into the incubator for pretreatment. The liquid preparation mechanism automatically finishes the liquid preparation action, so that the position, the size and the shape of the titrated liquid drop are regular, the titration amount of the liquid can be accurately controlled, and the oil covering amount of the liquid can also be accurately controlled; in addition, after the liquid preparation action is finished, the titrated liquid can be immediately placed into an incubator by a transfer mechanism for pretreatment of temperature and PH value adjustment; finally, the whole liquid preparation process does not need manual intervention, thereby greatly reducing the labor cost. However, the liquid preparation mechanism and the transfer mechanism of the device are responsible, and the device occupies a large space, and cannot be applied to a scene of miniaturized sampling.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a handheld automatic liquid rifle that is equipped with, through the propelling movement barral of force that sets gradually, arrange propelling movement barral of force in lead pole, connection lid, a lead section of thick bamboo, arrange in lead subassembly, front end housing in the lead section of thick bamboo, install in piston cylinder on the front end housing, move back the gun case and move the liquid gun head, realize installing one or more liquid gun head on corresponding piston cylinder, promote the piston rod on the lead section of thick bamboo through the lead section pole and be in move in the piston cylinder to accomplish the absorption to solution, and accessible move back the gun case and push away from a plurality of liquid gun heads from the piston cylinder, in order to solve the above-mentioned problem of large-scale automation liquid device of being equipped with, just the utility model discloses the handheld automatic liquid gun that is equipped with processing simple manufacture, small, the application scene is more nimble, the operation more accords with operating personnel's operation custom and cost reduction by a wide margin.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme:

a hand-held automatic liquid preparation gun comprising:

the gun rod pushing device comprises a gun rod pushing device, a gun rod pushing device and a gun rod locking device, wherein a gun rod cavity is axially arranged on the gun rod pushing device;

the lead rod is arranged in the gun rod cavity and moves in the gun rod cavity along the axial direction of the pushing gun rod;

one side of the connecting cover is connected with one end of the pushing gun rod;

the connecting cover is connected with the lead cylinder through a screw, the screw can be preferably arranged in a mounting hole on the peripheral wall of the lead cylinder, and one end of the lead rod penetrates through the connecting cover and extends into the lead chamber;

the lead assembly is arranged in a lead cavity of the lead cylinder and comprises a plurality of piston rods, and the piston rods are arranged at one end of the lead rods, which faces away from the lead cylinder, so that the lead rods push the piston rods to move in the lead cavity;

one end of the front end cover is connected with one end, far away from the connecting cover, of the lead cylinder, and a plurality of piston cylinders matched with the piston rods are arranged on the front end cover, so that the piston rods can be inserted into the corresponding piston cylinders in a matched mode;

and the liquid-transfering gun head is used for being connected with one end, far away from the front end cover, of the piston cylinder.

Preferably, the connecting cover is provided with a through hole for one end of the lead rod to pass through, and one end of the lead rod passes through the connecting cover from the through hole on the connecting cover and then extends into the lead cylinder to be connected with the lead assembly.

Preferably, the front end cover and the lead cylinder are designed in a split mode, and are of independent structures and fixedly connected through screws.

More preferably, the front end cover and the lead cylinder are of an integral structure, so that the installation links of the front end cover and the lead cylinder are saved.

Preferably, the pipette further comprises a gun withdrawing sleeve, one end of the gun withdrawing sleeve is connected with the front end cover or the lead cylinder, and a through hole for the piston cylinder to pass through is formed in the other end of the gun withdrawing sleeve, so that one end, far away from the front end cover, of the piston cylinder extends out of the through hole and is connected with the pipette head.

By the arrangement, the cylinder body of the piston cylinder can be arranged in the cavity of the gun withdrawing sleeve, so that the gun withdrawing sleeve is ensured to protect the piston cylinder, and the piston cylinder is prevented from being damaged after being impacted.

Preferably, the gun withdrawing sleeve is movably connected with the front end cover or the lead cylinder, and the gun withdrawing sleeve can reciprocate relative to the front end cover or the lead cylinder, so that one end, provided with the through hole, of the gun withdrawing sleeve pushes the pipette head to separate the pipette head from the piston cylinder.

The arrangement is that when the pipette head is required to be detached from the piston cylinder, the pipette head can be detached from the piston cylinder only by pushing the gun withdrawing sleeve, so that the end surface of the gun withdrawing sleeve can be in contact with the end surface of the pipette head, the gun withdrawing sleeve pushes the pipette head to be separated from the piston cylinder, the pipette head does not need to be pulled out from the piston cylinder one by one, and the detaching speed of the pipette head is improved.

Preferably, the piston cylinder can be inserted into the pipette head, or a connecting pipe inserted into the piston cylinder is arranged at the end part of the pipette head connected with the piston cylinder, the outer diameter of the end part of the piston cylinder connected with the pipette head is smaller than the aperture of the perforation on the gun withdrawal sleeve, and the outer diameter of the end part of the pipette head connected with the piston cylinder is larger than the aperture of the perforation, so that the piston cylinder can extend out of the perforation on the gun withdrawal sleeve, and the gun withdrawal sleeve can push the pipette head to separate from the piston cylinder when the gun withdrawal sleeve moves towards the pipette head. The pipette tip is of a conical structure, and the end with the largest outer diameter of the pipette tip is connected with the piston cylinder.

Preferably, one end of the piston cylinder, which is used for being connected with the pipette tip, is provided with a step-shaped adaptive structure, the step-shaped adaptive structure can be in butt joint with the pipette tip and realizes sealing, and the step-shaped adaptive structure is an annular step surface arranged on the outer wall of the piston cylinder.

Preferably, the gun withdrawing sleeve is connected with the front end cover through an elastic assembly, and the gun withdrawing sleeve is pushed to compress or stretch an elastic piece in the elastic assembly so as to move relative to the front end cover and separate the pipette head from the piston barrel. Elastic component among the elastic component can be elastic parts such as rubber column, spring part, can realize moving back the automatic resilience of gun case through resumeing deformation.

Set up like this, can make quick reset, it can realize popping out simultaneously of multiunit rifle head.

Preferably, the gun withdrawing sleeve can be connected with one end, facing the lead cylinder, of the front end cover, an elastic piece in the elastic assembly is arranged between one end, connected with the front end cover, of the gun withdrawing sleeve and one end, facing the lead cylinder, of the front end cover, when the gun withdrawing sleeve is pushed, the gun withdrawing sleeve compresses the elastic piece, so that the gun withdrawing sleeve moves towards the pipette head and pushes the pipette head away from the piston cylinder, after the pipette head is separated from the piston cylinder, only the pushing force applied to the gun withdrawing sleeve is cancelled, the elastic piece recovers deformation, and the gun withdrawing sleeve is reset through the pushing force of the elastic piece.

Preferably, the elastic component comprises a spring part, a spring pressing block and a fastening bolt, the spring pressing block is fixed at the end part of the gun sleeve withdrawing through the fastening bolt, a mounting hole for assembling the spring part is formed in the front end cover, one end of the spring part is fixed in the mounting hole, and the other end of the spring part is connected with the spring pressing block. The arrangement can enable the spring piece to be connected with the gun withdrawing sleeve and the connecting cover, and the spring pressing block on the gun withdrawing sleeve can be compressed or stretched by pushing the gun withdrawing sleeve.

Preferably, one end of the gun withdrawing sleeve, which is used for being connected with the connecting cover, is provided with a plurality of lug structures, the lug structures are provided with mounting grooves for mounting spring pressing blocks, the lug structures penetrate through the lug and the spring pressing blocks through fastening bolts, so that the spring pressing blocks are fixed on the gun withdrawing sleeve, one side, facing the connecting cover, of the spring pressing blocks is further provided with guide pillars, the guide pillars are used for being inserted into inner rings of the spring parts, and therefore the spring parts can be prevented from transversely shaking in the compression, stretching or deformation recovery processes, and the spring parts cannot transversely swing and deform in the pushing process of the gun withdrawing sleeve.

Preferably, the spring compression block is in sliding connection with the outer side wall of the lead cylinder, a sliding groove is formed in the outer side wall of the lead cylinder, and the spring compression block is matched with the sliding groove towards one side of the outer side wall of the lead cylinder, so that the spring compression block can slide in the sliding groove in a guiding manner when the gun withdrawing sleeve moves.

Preferably, the spring pressing block faces towards the arc-shaped side wall on one side of the outer side wall of the lead cylinder, and the sliding groove is an adaptive arc-shaped groove, so that the sliding smoothness is facilitated. And in the moving process of the gun case withdrawing, the spring pressing block can slide in the sliding groove in the lead cylinder, so that the gun case withdrawing is guided.

Preferably, the lead assembly further comprises a lead plate, a groove for fixing the piston rod is arranged at one end of the lead plate, which is away from the connecting cover, and one end of the lead plate, which faces the connecting cover, is connected with the lead rod.

Preferably, the lead plate is away from one end of the connecting cover and is provided with a plurality of grooves arranged in an array mode, clamping platforms used for clamping the end portions of the piston rods are arranged in the grooves, and the end portions of the piston rods are clamped and fixed in the grooves.

Preferably, the lead rod may be directly connected to the lead plate.

Preferably, the lead cylinder is internally provided with a sliding groove matched with the lead plate, and the sliding groove can enable the lead plate to slide in the lead cylinder with only one degree of freedom, so that the lead plate is prevented from rotating in the sliding process.

Preferably, still include the piston barrel clamp plate, the front end housing orientation the one end of piston barrel is provided with the confession the indent of piston barrel clamp plate installation, the piston barrel clamp plate install in the indent, be provided with the confession on the front end housing the fixed orifices that the piston barrel was pegged graft, the piston barrel with the one end that the front end housing was pegged graft is provided with the snap ring, the external diameter of snap ring is greater than the internal diameter of fixed orifices, the piston barrel clamp plate be used for with the snap ring compresses tightly in the indent of front end housing. The arrangement can enable the clamping ring to be clamped on one side, facing the lead cylinder, of the front end cover and abutted to the clamping ring at the end part of the piston cylinder, so that the piston cylinder pressing plate can tightly press the piston cylinder on the front end cover, and the piston cylinder is prevented from shaking during liquid suction.

Preferably, one end of the lead rod, which is far away from the pushing gun rod, is provided with a lead rod fixing part, and the lead rod fixing part is connected with one side, which faces the connecting cover, of the lead component. Specifically, the lead rod mounting with lead plate fixed connection, so that the lead rod can promote the lead plate removes, and then drives piston rod on the lead plate is in propelling movement in the piston cylinder to cause pressure differential realization to liquid suction function.

Preferably, the lead bar orientation the one end of propelling movement barral of a gun is provided with the sliding block, the confession has been seted up to the lateral wall of propelling movement barral of a gun the side fluting that the sliding block stretches out, through promoting the sliding block is so that the lead bar is in remove in the barral of a gun cavity.

Preferably, the structure of sliding block includes sliding block body, fixture block and promotes the piece, it all sets up on one side lateral wall of sliding block to promote piece and fixture block, it certainly to promote the piece slope extends the setting on the lateral wall of sliding block body, and promotes the piece and follow stretch out the setting in the side fluting, sets up like this and can be convenient for promote with the hand in the use promote the piece, the fixture block be used for with the joint groove cooperation of propelling movement barral of a gun lateral wall, when promoting and promote the piece, it drives to promote the piece sliding block body, fixture block move together, the fixture block is in move in the joint groove, and when the fixture block moved the diapire contact with the joint groove, the joint groove can carry on spacingly to the fixture block to realize spacing sliding block and helical pitch pole, prevent that helical pitch pole from roll-off in the barral cavity.

Preferably, one side of connecting the lid be provided with the joint spare that the propelling movement barral of a gun is connected, the propelling movement barral of a gun with the one end of connecting the lid be provided with joint spare cooperation ring groove.

Preferably, one side of ring groove is provided with the breach section, and it is convenient to set up like this connect the joint spare of covering can follow the breach section card is gone into in the ring groove to accomplish connect the lid with the assembly of promotion barral of a gun.

Has the advantages that:

the utility model discloses a handheld automatic liquid gun of being equipped with is through the propelling movement barral of a gun that sets gradually, arrange the helical pitch pole in the propelling movement barral of a gun, connect lid, a helical pitch section of thick bamboo, arrange in helical pitch subassembly, front end housing in the helical pitch section of thick bamboo, install in piston cylinder on the front end housing, move back the gun case and move liquid gun head, realize installing one or more move liquid gun head on corresponding piston cylinder, when needing to absorb biological solution, pour biological solution into the liquid bath of speciality into, insert the liquid bath pulling sliding block with the rifle head, thereby make helical pitch pole promote the piston rod on the helical pitch subassembly to keep away from in the piston cylinder move in the direction of moving back the gun case, thereby accomplish the absorption to solution, uncap the culture dish after that, aim at the culture dish center with handheld automatic liquid gun of being equipped with, promote the sliding block, with biological solution liquid drop in the culture dish, thereby accomplish in the culture dish in-connection and continuously prepare a plurality of biological solution droplets, and the biological solution droplet is even, the orderly problem of arrangement of volume of preparation, whole operation process need not hard, efficiency obviously improves.

The utility model discloses move back the gun case in being equipped with the liquid gun and pass through elastic component with the front end housing and be connected, through promoting move back the elastic component among the gun case compression or the tensile elastic component, so that move back the gun case for the front end housing removes, and will move liquid gun head with the piston section of thick bamboo separation pops out when realizing multiunit liquid gun head in proper order. And the elastic piece recovers deformation to realize automatic rebounding of the retreat gun sleeve, so that the retreat gun sleeve can be quickly reset.

The utility model discloses handheld automatic liquid gun's processing simple manufacture, small, applied scene more nimble, the operation more accords with operating personnel's operation custom and cost reduce by a wide margin.

Drawings

FIG. 1 is a front view of a hand-held automatic liquid gun according to embodiment 1;

FIG. 2 is a perspective view of a hand-held automatic liquid preparation gun according to embodiment 1;

FIG. 3 is an exploded perspective view of a hand-held automatic liquid gun according to embodiment 1;

FIG. 4 is an enlarged view at A in FIG. 2;

fig. 5 is an assembly view of the slide block, the lead rod, and the lead assembly of the hand-held automatic liquid preparation gun according to embodiment 1;

fig. 6 is an assembly schematic diagram of a gun withdrawal sleeve and a front end cover in a handheld automatic liquid preparation gun according to embodiment 1;

FIG. 7 is a schematic view of a lead assembly of the hand-held automatic liquid preparation gun according to example 1;

fig. 8 is an assembly view of the piston cylinder and the front end cap of the hand-held automatic liquid preparation gun according to embodiment 5.

Reference numerals

1. Pushing the gun rod; 11. side grooving; 111. a slider body; 112. a pushing block; 113. a clamping block; 12. an annular clamp groove; 121. a notch section; 2. a lead rod; 21. a lead rod fixing member; 3. a connecting cover; 31. a clamping piece; 4. a lead cylinder; 41. a chute; 5. withdrawing the gun sleeve; 51. a lug structure; 52. an elastic member; 521. a spring member; 522. a spring compression block; 523. fastening the bolt; 6. a lead assembly; 61. a piston rod; 62. a lead plate; 7. a front end cover; 8. a piston cylinder pressure plate; 9. a piston cylinder; 91. a snap ring; 10. a pipette tip; 13. a pipetting button;

Detailed Description

In order to more clearly illustrate embodiments of the present invention or technical solutions in the prior art, specific embodiments of the present invention will be described below with reference to the accompanying drawings. It is obvious that the drawings in the following description are only examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.

The technical solution of the present invention is described in detail with specific embodiments below.

Example 1

As shown in fig. 1 to 3, the handheld automatic liquid preparation gun comprises a pushing gun rod 1, a lead rod 2 arranged in the pushing gun rod 1, a connecting cover 3, a lead cylinder 4, a lead assembly 6 arranged in the lead cylinder 4, a front end cover 7, a piston cylinder 9 arranged on the front end cover 7, a gun withdrawal sleeve 5 and a liquid transfer gun head 10 which are sequentially arranged.

A gun rod cavity is axially arranged on the pushing gun rod 1; the lead rod 2 is arranged in the gun rod cavity and moves in the gun rod cavity along the axial direction of the pushing gun rod 1; one side of the connecting cover 3 is connected with one end of the pushing gun rod 1; the connecting cover 3 is connected with the lead cylinder 4 through a screw, the screw can be preferably arranged in a mounting hole on the outer peripheral wall of the lead cylinder 4, and one end of the lead cylinder 2 penetrates through the connecting cover 3 and extends into the lead cavity; the lead assembly 6 is arranged in a lead cavity of the lead cylinder 4, the lead assembly 6 comprises a plurality of piston rods 61, and the piston rods 61 are arranged at one end of the lead rod 2, which is far away from the lead cylinder 4, so that the lead rod 2 pushes the piston rods 61 to move in the lead cavity; one end of the front end cover 7 is connected with one end of the lead cylinder 4 far away from the connecting cover 3, and the front end cover 7 is provided with a plurality of piston cylinders 9 matched with the piston rod 61, so that the piston rod 61 can be inserted into the corresponding piston cylinders 9 in a matching manner; the pipette tip 10 is used for being connected with one end of the piston cylinder 9 far away from the front end cover 7.

Connect and set up on the lid 3 and supply the through-hole that one end of lead pole 2 passed, the one end of lead pole 2 is followed through-hole on the connection lid 3 passes stretch into behind the connection lid 3 in the lead section of thick bamboo 4 with lead subassembly 6 is connected.

The front end cover 7 and the lead cylinder 4 are designed in a split mode, are of independent structures and are fixedly connected through screws.

As shown in fig. 3 and 5, a sliding block is disposed at one end of the lead rod 2 facing the gun rod pushing body 1, a side groove 11 for the sliding block to extend out is disposed on a side wall of the gun rod pushing body 1, and the sliding block is pushed to move the lead rod 2 in the gun rod cavity. The slider is the pipetting button 13 of the liquid preparation gun.

The structure of the sliding block comprises a sliding block body 111, a clamping block 113 and a pushing block 112, wherein the pushing block 112 and the clamping block 113 are arranged on one side wall of the sliding block, the pushing block 112 is obliquely arranged on the side wall of the sliding block body 111 in an extending mode, the pushing block 112 extends out of the side opening groove 11, the pushing block 112 and the clamping block 113 can be pushed by hand in the using process conveniently, the clamping block 113 is used for being matched with a clamping groove in the side wall of the pushing gun rod 1, when the pushing block 112 is pushed, the pushing block 112 drives the sliding block body 111 and the clamping block 113 to move together, the clamping block 113 moves in the clamping groove, and when the clamping block 113 moves to be in contact with the bottom wall of the clamping groove, the clamping groove can limit the clamping block 113, so that the limiting of the sliding block and the lead rod 2 is achieved, and the lead rod 2 is prevented from sliding out of a gun rod cavity.

As shown in fig. 4, a clamping piece 31 connected with the pushing gun rod 1 is arranged on one side of the connecting cover 3, and an annular clamping groove 12 matched with the clamping piece 31 is arranged at one end of the pushing gun rod 1 connected with the connecting cover 3. Joint spare 31 is a ring spare structure, one side of ring groove 12 is provided with breach section 121, and it is convenient to set up like this joint spare 31 on the connection lid 3 can be followed breach section 121 card is gone into in the ring groove 12 to accomplish connect lid 3 with promote the assembly of barral of a gun.

As shown in fig. 6, the lead assembly 6 further includes a lead plate 62, a groove for fixing the piston rod 61 is provided at an end of the lead plate 62 facing away from the connecting cover 3, and an end of the lead plate 62 facing toward the connecting cover 3 is connected to the lead rod 2.

The lead plate 62 deviates from the groove formed by arranging a plurality of arrays is formed in one end of the connecting cover 3, the clamping tables used for clamping the end part of the piston rod 61 are arranged in the groove, and the end part of the piston rod 61 is clamped and fixed in the groove. The one end that lead rod 2 deviates from propelling movement rifle pole 1 is provided with lead rod mounting 21, lead rod mounting 21 with lead subassembly 6 is towards one side of connecting lid 3 is connected. Specifically, the lead rod fixing member 21 is fixedly connected to the lead plate 62 toward one side of the connecting cover 3, so that the lead rod 2 can push the lead plate 62 to move, and further drive the piston rod 61 on the lead plate 62 to push in the piston cylinder 9, thereby causing a pressure difference to realize a liquid suction function.

The lead cylinder 4 is internally provided with a sliding groove matched with the lead plate 62, and the sliding groove can enable the lead plate 62 to slide in the lead cylinder 4 with only one degree of freedom, so that the lead plate 62 is prevented from rotating in the sliding process.

One end of the gun withdrawing sleeve 5 is connected with the front end cover 7 or the lead cylinder 4, and the other end of the gun withdrawing sleeve 5 is provided with a through hole for the piston cylinder 9 to pass through, so that one end of the piston cylinder 9, which is far away from the front end cover 7, extends out of the through hole to be connected with the pipette tip 10. By the arrangement, the cylinder body of the piston cylinder 9 can be arranged in the cavity of the gun withdrawing sleeve 5, so that the gun withdrawing sleeve 5 is ensured to protect the piston cylinder 9, and the piston cylinder 9 is prevented from being damaged after being impacted.

The gun withdrawing sleeve 5 is movably connected with the front end cover 7 or the lead cylinder 4, and the gun withdrawing sleeve 5 can reciprocate relative to the front end cover 7 or the lead cylinder 4, so that one end, provided with the through hole, of the gun withdrawing sleeve 5 pushes the liquid transfer gun head 10 to separate the liquid transfer gun head 10 from the piston cylinder 9. By means of the arrangement, when the pipette tip 10 needs to be detached from the piston cylinder 9, the end face of the withdrawal sleeve 5 can be in contact with the end face of the pipette tip 10 by only pushing the withdrawal sleeve 5, so that the withdrawal sleeve 5 pushes the pipette tip 10 to be separated from the piston cylinder 9, the pipette tip 10 does not need to be pulled out from the piston cylinder 9 one by one, and the detaching speed of the pipette tip 10 is improved.

The gun withdrawing sleeve 5 is connected with the front end cover 7 through an elastic assembly 52, and the elastic member in the elastic assembly 52 is compressed or stretched by pushing the gun withdrawing sleeve 5, so that the gun withdrawing sleeve 5 moves relative to the front end cover 7, and the pipette tip 10 is separated from the piston barrel 9. The elastic member in the elastic component 52 may be a rubber column, a spring member 521, or other elastic member, and can realize automatic springback of the gun case 5 by restoring deformation. Set up like this, can make quick reset, it can realize popping out when multiunit rifle head.

The gun withdrawing sleeve 5 can be connected with one end, facing the lead cylinder 4, of the front end cover 7, an elastic piece in the elastic assembly 52 is arranged between one end, connected with the front end cover 7, of the gun withdrawing sleeve 5 and one end, facing the lead cylinder 4, of the front end cover 7, when the gun withdrawing sleeve 5 is pushed, the gun withdrawing sleeve 5 compresses the elastic piece, so that the gun withdrawing sleeve 5 moves towards the pipette tip 10 and pushes the pipette tip 10 away from the piston cylinder 9, after the pipette tip 10 is separated from the piston cylinder 9, only thrust applied to the gun withdrawing sleeve 5 needs to be cancelled, the elastic piece restores deformation, and the gun withdrawing sleeve 5 is reset through the thrust of the elastic piece.

As shown in fig. 6, in the present embodiment, preferably, the elastic component 52 includes a spring element 521, a spring pressing block 522, and a fastening bolt 523, the spring pressing block 522 is fixed at an end of the holster block 5 through the fastening bolt 523, the front end cover 7 is provided with a mounting hole for assembling the spring element 521, one end of the spring element 521 is fixed in the mounting hole, and the other end of the spring element 521 is connected to the spring pressing block 522. The arrangement is such that the spring member 521 connects the ejection sleeve 5 with the connection cap 3, and the spring pressing block 522 on the ejection sleeve 5 can compress or stretch the spring member 521 by pushing the ejection sleeve 5.

The gun withdrawing sleeve 5 is provided with a plurality of lug structures 51 at one end connected with the connecting cover 3, the lug structures 51 are provided with mounting grooves for mounting spring pressing blocks 522, fastening bolts 523 transversely penetrate through the lugs and the spring pressing blocks 522 so that the spring pressing blocks 522 are fixed on the gun withdrawing sleeve 5, and one side of the spring pressing blocks 522, facing the connecting cover 3, is also provided with guide posts which are inserted into inner rings of the spring part 521, so that the spring part 521 can be prevented from transversely shaking in the processes of compression, stretching or deformation recovery, and the spring part 521 can not transversely swing and deform in the pushing process of the gun withdrawing sleeve 5.

The spring pressing block 522 is slidably connected with the outer side wall of the lead cylinder 4, a sliding groove 41 is formed in the outer side wall of the lead cylinder 4, and one side of the spring pressing block 522, which faces the outer side wall of the lead cylinder 4, is matched with the sliding groove 41, so that the spring pressing block 522 can slide in the sliding groove 41 in a guiding manner when the gun withdrawing sleeve 5 moves.

As shown in fig. 3, the side of the spring pressing block 522 facing the outer side wall of the lead cylinder 4 is an arc-shaped side wall, and the sliding groove 41 is an adaptive arc-shaped groove, so that the smoothness of sliding is facilitated. And in the moving process of the gun case 5, the spring pressing block 522 can slide in the sliding groove 41 on the lead cylinder 4, so that the gun case 5 is guided.

The piston cylinder 9 can be inserted into the pipette tip 10, or a connecting pipe inserted into the piston cylinder 9 is arranged at the end of the pipette tip 10 used for being connected with the piston cylinder 9, the outer diameter of the end of the piston cylinder 9 connected with the pipette tip 10 is smaller than the diameter of the perforation on the withdrawal sleeve 5, and the outer diameter of the end of the pipette tip 10 used for being connected with the piston cylinder 9 is larger than the diameter of the perforation, so that the piston cylinder 9 can extend out from the perforation on the withdrawal sleeve 5, and the withdrawal sleeve 5 can push the pipette tip 10 to separate from the piston cylinder 9 when the withdrawal sleeve 5 moves towards the pipette tip 10. The pipette tip 10 is of a conical structure, and one end of the pipette tip 10 with the largest outer diameter is connected with the piston cylinder 9.

One end of the piston cylinder 9, which is used for being connected with the pipetting gun head 10, is provided with a step-shaped adaptive structure, the step-shaped adaptive structure can be in butt joint with the pipetting gun head 10 and realizes sealing, and the step-shaped adaptive structure is an annular step surface arranged on the outer wall of the piston cylinder 9.

The installation process of the handheld automatic liquid preparation gun of the embodiment is as follows:

firstly, one end of the lead rod 2 is connected with the sliding block body 111, the fixture block 113 and the pushing block 112 on the sliding block body 111 extend out of the side open groove 11 of the pushing gun rod 1, the other end of the lead rod 2 penetrates through the connecting cover 3 to be connected with the lead rod fixing member 21, then the pushing gun rod 1 is clamped with the connecting cover 3, after the lead rod fixing member 21 is fixedly connected with the lead plate 62, one end of the lead cylinder 4 is fixedly connected with the connecting cover 3, so that the lead rod 2 and the piston rod 61 on the lead plate 62 are placed in the lead cylinder 4, then the piston cylinder 9 is installed on the front end cover 7, then the front end cover 7 is fixedly connected with the other end of the lead cylinder 4, so that the piston rods 61 and the piston cylinders 9 are arranged in a one-to-one correspondence manner, the piston rods 61 can extend into the piston cylinder 9, after the front end cover 7 and the lead cylinder 4 are installed, the gun withdrawing sleeve 5 is connected with the lead cylinder 4 through the elastic component 52, and finally the liquid transferring cylinder 10 is installed on the gun withdrawing sleeve 5 from one end of the punch hole, so as to complete the whole hand-held automatic liquid preparing gun.

The working process of the handheld liquid preparation gun is as follows:

1. a piston cylinder 9 of the handheld automatic liquid preparation gun is butted with a liquid transfer gun head 10, so that the liquid transfer gun head 10 is firmly sleeved on the piston cylinder 9, and the measuring range of the liquid preparation gun is adjusted according to requirements;

2. pouring the biological solution into a special solution transferring groove, inserting the pipette head into the solution transferring groove, pulling a sliding block on the handheld automatic solution preparing gun to drive the piston rod 61 to move towards the direction far away from the pipette head 10, and enabling the pipette head 10 to suck the solution;

3. opening a cover of the culture dish, aligning the handheld automatic liquid preparation gun to the center of the culture dish, pushing a sliding block on the handheld automatic liquid preparation gun in the opposite direction to enable the solution to drip into the culture dish, adding mineral oil, and putting the culture dish into an incubator to complete liquid preparation operation, wherein the handheld automatic liquid preparation gun can drip one or more culture dishes by sucking liquid once;

4. after the solution is instilled, the pipette tips 10 are simultaneously ejected by sliding the withdrawal sleeve 5.

Example 2

In this embodiment, the front end cover 7 and the lead cylinder 4 are of an integral structure, so that the installation steps of the front end cover 7 and the lead cylinder 4 are saved.

Example 3

Only the difference from the above embodiment is described in this embodiment, and other technical features are the same, in this embodiment, in another embodiment, the gun withdrawing sleeve 5 may be connected to one end of the front end cover 7 away from the lead cylinder 4, and the elastic member in the elastic assembly 52 is disposed between one end of the gun withdrawing sleeve 5 connected to the front end cover 7 and one end of the front end cover 7 away from the lead cylinder 4, when the gun withdrawing sleeve 5 is pushed, the gun withdrawing sleeve 5 stretches the elastic member, so that the gun withdrawing sleeve 5 moves towards the pipette tip 10 and pushes the pipette tip 10 away from the piston cylinder 9, and after the pipette tip 10 is separated from the piston cylinder 9, only the pushing force applied to the gun withdrawing sleeve 5 needs to be cancelled, so that the elastic member recovers its deformation, and the gun withdrawing sleeve 5 is reset by the pulling force of the elastic member.

Example 4

In this embodiment, only the difference from the above-described embodiment is described, and other technical features are the same, and in this embodiment, the lead rod 2 may be directly connected to the lead plate 62.

Example 5

Only differences from the above embodiment are described in this embodiment, and other technical features are the same, in this embodiment, the handheld automatic liquid preparation gun further includes a piston barrel pressing plate 8, a pressing groove for mounting the piston barrel pressing plate 8 is provided at one end of the front end cover 7 facing the piston barrel 9, the piston barrel pressing plate 8 is mounted in the pressing groove, a fixing hole for inserting the piston barrel 9 is provided on the front end cover 7, as shown in fig. 8, a snap ring 91 is provided at one end of the piston barrel 9 inserted into the front end cover 7, an outer diameter of the snap ring 91 is greater than an inner diameter of the fixing hole, and the piston barrel pressing plate 8 is used for pressing the snap ring 91 in the pressing groove of the front end cover 7. The arrangement can enable the snap ring 91 to be clamped at one side of the front end cover 7 facing the lead cylinder 4 and abut against the snap ring 91 at the end part of the piston cylinder 9, so that the piston cylinder pressing plate 8 can press the piston cylinder 9 on the front end cover 7, and the piston cylinder 9 is prevented from shaking during liquid suction.

Example 6

Only differences from the above embodiment are described in this embodiment, and other technical features are the same, in this embodiment, the end of the pushing gun rod 1 away from the connecting cover 3 is provided with a pipetting button 13 and a liquid amount adjusting gear, one end of the pipetting button 13 extends into the gun rod cavity of the pushing gun rod 1 to be connected with the lead rod 2, and the pipetting button 13 pushes the lead rod 2 to complete the dripping. The liquid measure regulating gear with move liquid button 13 and be connected, set up a plurality of gears on the liquid measure regulating gear, through rotating liquid measure regulating gear adjusts the dropping liquid volume at every turn, liquid measure regulating gear can adjust the orientation that presses at every turn and move liquid button 13 produced the distance of removal in the barral of a gun cavity, and then adjusts move liquid button 13 promotes the distance that lead pole 2 moved, finally accomplishes the accurate control of liquid drop volume, therefore the xul capacity solution of absorbing in the liquid-transfering gun head 10 in this embodiment can come one or more times to discharge through adjusting liquid measure regulating gear.

Specifically, the liquid amount adjusting gear can be set to 5 gears, the liquid amount adjusting gear corresponds to the liquid drops with the amounts (3 ul,6ul,9ul,12ul and 15ul), and the liquid amount adjusting gear is rotated, so that the pipetting button 13 is pressed to push the lead rod to push out the liquid drops with the corresponding volumes.

The working process of the handheld liquid preparation gun of the embodiment is as follows:

1. a piston cylinder 9 of the handheld automatic liquid preparation gun is butted with a liquid transfer gun head 10, so that the liquid transfer gun head 10 is firmly sleeved on the piston cylinder 9, and the measuring range of the liquid preparation gun is adjusted according to requirements;

2. pouring the biological solution into a special solution transferring groove, inserting the gun head into the solution transferring groove, pulling a sliding block on the handheld automatic solution preparing gun to drive the piston rod 61 to move towards the direction far away from the solution transferring gun head 10, and enabling the solution transferring gun head 10 to absorb solution with the volume of xul;

3. opening a cover of the culture dish, aligning the handheld automatic liquid preparation gun to the center of the culture dish, adjusting the gear of the liquid quantity adjusting gear according to the volume requirement of actually required liquid drops, then pressing a liquid transfer button 13 to push the lead rod 2 to enable the solution to be dripped into the culture dish, wherein the volume of the liquid drops discharged each time is determined by the gear of the liquid quantity adjusting gear, the solution with the volume of xul can be discharged for multiple times, then mineral oil is added, and the solution is put into the culture box to complete liquid preparation operation, and one or more culture dishes can be dripped by the handheld automatic liquid preparation gun through one-time liquid absorption;

4. after the solution instillation is finished, the gun withdrawing sleeve 5 is slid to eject the pipette tips 10 simultaneously.

It is right above that the utility model provides an embodiment of sample liquid detection card has explained in detail. The principle and the implementation of the present invention are explained by applying a specific embodiment, and the description of the above embodiment is only used to help understand the core idea of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can also make several improvements and modifications, and these improvements and modifications also fall into the protection scope of the claims of the present invention.

Claims (10)

1. A hand-held automatic liquid preparation gun, comprising:

the gun pushing device comprises a pushing gun rod (1), wherein a gun rod cavity is arranged on the pushing gun rod (1) along the axial direction;

the lead rod (2) is arranged in the gun rod cavity, and moves along the axial direction of the pushing gun rod (1) in the gun rod cavity;

one side of the connecting cover (3) is connected with one end of the pushing gun rod (1);

the lead cylinder (4) is provided with a lead cavity, one end of the lead cylinder (4) is connected with the other side of the connecting cover (3) so that the connecting cover (3) closes one side opening of the lead cavity, and one end of the lead rod (2) penetrates through the connecting cover (3) and extends into the lead cavity;

the lead assembly (6) is arranged in a lead cavity of the lead cylinder (4), the lead assembly (6) comprises a plurality of piston rods (61), and the piston rods (61) are arranged at one end of the lead rod (2) departing from the lead cylinder (4) so that the lead rod (2) pushes the piston rods (61) to move in the lead cavity;

the front end cover (7), one end of the front end cover (7) is connected with one end of the lead cylinder (4) far away from the connecting cover (3), and the front end cover (7) is provided with a plurality of piston cylinders (9) matched with the piston rod (61), so that the piston rod (61) can be inserted into the corresponding piston cylinders (9) in a matching manner;

the pipette tip (10) is used for being connected with one end, far away from the front end cover (7), of the piston cylinder (9).

2. The hand-held automatic liquid preparation gun according to claim 1, further comprising a gun withdrawal sleeve (5), wherein one end of the gun withdrawal sleeve (5) is connected with the front end cap (7) or the lead cylinder (4), and the other end of the gun withdrawal sleeve (5) is provided with a through hole for the piston cylinder (9) to pass through, so that one end of the piston cylinder (9) far away from the front end cap (7) extends out of the through hole to be connected with the pipette tip (10).

3. The hand-held automatic liquid preparation gun according to claim 2, wherein the gun withdrawal sleeve (5) is movably connected with the front end cap (7) or the lead cylinder (4), and the gun withdrawal sleeve (5) can reciprocate relative to the front end cap (7) or the lead cylinder (4) so that the end of the gun withdrawal sleeve (5) provided with the perforation pushes the pipette tip (10) to separate the pipette tip (10) from the piston cylinder (9).

4. The hand-held automatic liquid preparation gun according to claim 2 or 3, characterized in that the withdrawal sleeve (5) is connected to the front end cap (7) by means of a spring assembly (52), and the spring in the spring assembly (52) is compressed or stretched by pushing the withdrawal sleeve (5) to move the withdrawal sleeve (5) relative to the front end cap (7) and separate the pipette tip (10) from the piston barrel (9).

5. The hand-held automatic liquid preparation gun according to claim 4, wherein the elastic component (52) comprises a spring element (521), a spring pressing block (522) and a fastening bolt (523), the spring pressing block (522) is fixed at the end of the gun withdrawal sleeve (5) through the fastening bolt (523), the front end cover (7) is provided with a mounting hole for assembling the spring element (521), one end of the spring element (521) is fixed in the mounting hole, and the other end of the spring element (521) is connected with the spring pressing block (522).

6. Hand-held automatic liquid preparation gun according to claim 1, characterized in that the lead assembly (6) further comprises a lead plate (62), wherein a groove for fixing the piston rod (61) is provided at an end of the lead plate (62) facing away from the connection cap (3), and an end of the lead plate (62) facing towards the connection cap (3) is connected with the lead rod (2).

7. The hand-held automatic liquid preparing gun according to claim 1, further comprising a piston barrel pressing plate (8), wherein a pressing groove for installing the piston barrel pressing plate (8) is formed in one end, facing the piston barrel (9), of the front end cover (7), a fixing hole for inserting the piston barrel (9) is formed in the front end cover (7), a clamping ring (91) is arranged at one end, inserted into the front end cover (7), of the piston barrel (9), the outer diameter of the clamping ring (91) is larger than the inner diameter of the fixing hole, and the piston barrel pressing plate (8) is used for pressing the clamping ring (91) into the pressing groove of the front end cover (7).

8. Hand-held automatic liquid preparation gun according to claim 1, 6 or 7, characterized in that the end of the lead rod (2) facing away from the ejector gun rod (1) is provided with a lead rod securing (21), the lead rod securing (21) being connected to the side of the lead assembly (6) facing the connection cap (3).

9. The hand-held automatic liquid preparation gun according to claim 1, wherein a sliding block is disposed at one end of the lead rod (2) facing the push gun rod (1), a side groove (11) for extending the sliding block is disposed on a side wall of the push gun rod (1), and the lead rod (2) moves in the gun rod cavity by pushing the sliding block.

10. The hand-held automatic liquid preparation gun according to claim 1, wherein a clamping piece (31) connected with the pushing gun rod (1) is arranged on one side of the connecting cover (3), and an annular clamping groove (12) matched with the clamping piece (31) is arranged at one end of the pushing gun rod (1) connected with the connecting cover (3).

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