CN211436243U - Interface section thickened type liquid-transfering gun head - Google Patents

Abstract

The utility model discloses a connector section thickened type liquid-transfering gun head, including the rifle head body, the rifle head body is including outer tube and the inner tube that is linked together, the connector section threaded connection of outer tube has the thickening circle, the relative both sides of thickening circle are equipped with spherical fixed slot, be equipped with swing joint's connecting strip in the fixed slot, two can dismantle through the connecting strip between the rifle head body and link together, the lower extreme of outer tube and inner tube is equipped with suction inlet one and suction inlet two respectively, be equipped with the stopper in the suction inlet two, inner tube upper end is through annular fixed plate sealing connection on the inner wall of outer tube, inner tube upper portion lateral wall is equipped with the through-hole with the outer tube intercommunication. The utility model discloses simple structure, convenient to use utilizes the connecting strip to realize the connection of independent liquid-transfering gun head, overcomes the defect that needs dress box one by one that current liquid-transfering gun head exists when actually adorning the box, has improved dress box efficiency, simplifies the dress box procedure, has saved the manpower.

Description

Interface section thickened type liquid-transfering gun head

Technical Field

The utility model relates to an experimental device technical field, concretely relates to interface section thickened type liquid-transfering gun head.

Background

Pipette guns are a type of pipettor commonly used in laboratories for the removal of small or minute quantities of liquid. The components of a pipette used to pipette liquids are referred to as pipette guns. During the use, for making the liquid-transfering gun head can firmly connect on the liquid-transfering gun, need cup joint the liquid-transfering gun head on the mouthpiece of liquid-transfering gun with certain dynamics, if dynamics control then damage the connector on liquid-transfering gun head top easily not well to influence the leakproofness of liquid-transfering gun head. In addition, the prior pipette tips have problems in use, and the prior pipette tips in bulk are required to be arranged one by one and regularly placed in the tip box, so that the work is complicated and time-consuming, and a large amount of time of experimenters is wasted.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve above-mentioned problem, provide one-piece, and interface section thickened type liquid-transfering gun head.

The utility model adopts the following technical scheme:

the utility model provides a joint section thickened type liquid-transfering gun head, includes the rifle head body, the rifle head body is including outer tube and the inner tube that is linked together, the outer tube includes the joint section on upper portion and the imbibition section of lower part, and joint section threaded connection has the thickening circle, the relative both sides of thickening circle are equipped with spherical fixed slot, be equipped with swing joint's connecting strip in the fixed slot, the both ends of connecting strip all be equipped with fixed slot assorted fixture block, fixture block activity block is in the fixed slot, two can dismantle through the connecting strip between the rifle head body and link together, the lower extreme of outer tube and inner tube is equipped with suction inlet one and suction inlet two respectively, be equipped with the stopper in the suction inlet two, inner tube upper end is through annular fixed plate sealing connection on the inner wall of outer tube.

As a preferred technical scheme of the utility model, a suction inlet outside of outer tube is equipped with can dismantle the filter tip of connection, the filter tip includes the connecting portion with outer union coupling and is used for filterable filter house.

As an optimal technical scheme of the utility model, the connecting portion of filter tip are equipped with the internal thread, a suction inlet outer wall of outer tube is equipped with the external screw thread, and the filter tip is in the same place with outer tube threaded connection.

As an optimized technical scheme of the utility model, the filter house of filter tip is for being equipped with the filter screen of filtration pore, the filter house is the hemisphere shape.

The utility model has the advantages that:

the utility model discloses simple structure, convenient to use utilizes the connecting strip to realize the connection of independent liquid-transfering gun head, overcomes the defect that needs dress box one by one that current liquid-transfering gun head exists when actually adorning the box, has improved dress box efficiency, simplifies the dress box procedure, has saved the manpower.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is an enlarged schematic view at A;

FIG. 3 is an enlarged view of B;

fig. 4 is a schematic view of the connection of two pipette tips.

The symbols in the drawings illustrate that:

1: outer tube, 101: interface section, 102: liquid suction section, 103: suction port one, 2: inner tube, 201: suction port two, 3: thickened ring, 301: fixing groove, 4: connecting strip, 401: a latch, 5: plug, 6: fixing plate, 7: through hole, 8: filter, 801: connection portion, 802: and a filtering part.

Detailed Description

The invention will now be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 4, a connector section thickened type liquid-transfering gun head, including the rifle head body, the rifle head body is including outer tube 1 and the inner tube 2 that are linked together, outer tube 1 includes the connector section 101 on upper portion and imbibition section 102 of lower part, and connector section 101 upper end lateral wall is equipped with the external screw thread, and thickening circle 3 is equipped with the internal thread with external screw thread assorted to make thickening circle 3 pass through threaded connection on connector section 101, increased the wall thickness of connector section 101 in other words, can bear bigger extrusion force when cup jointing. The two opposite sides of the thickening ring 3 are provided with spherical fixing grooves 301, the fixing grooves 301 are internally provided with movably connected connecting strips 4, two ends of each connecting strip 4 are respectively provided with a spherical clamping block 401 matched with the fixing grooves 301, the clamping blocks 401 are movably clamped in the fixing grooves 301, the size of the clamping blocks 401 is matched with the size of the fixing grooves 301, the clamping blocks can be clamped in the fixing grooves 301 and cannot fall off automatically, the clamping blocks 401 can be inserted into/pulled out of the fixing grooves 301 through slight exertion, the gun heads are detachably connected through the connecting strips 4, namely the fixing grooves 301 of the first gun head body are internally connected with the connecting strips 4, the other ends of the connecting strips 4 are connected into one fixing groove 301 of the second gun head body, and therefore the two gun head bodies are connected. The fixing groove 301 and the connecting strip 4 of the thickening ring 3 are both simple-structure components, are convenient to connect, can be produced in batches in unified specifications, and are convenient to replace, when two gun head bodies need to be disassembled, the clamping block 401 of the connecting strip 4 only needs to be pulled out of the fixing groove 301, subsequent liquid suction operation is not hindered, the connecting strip 4 can be recycled, and materials are saved; in addition, thickening circle 3 is threaded connection in interface section 101, when only outer tube 1 or (and) inner tube 2 damaged, also can be with thickening circle 3 back-out for recycle, improves its utilization ratio.

The lower extreme of outer tube 1 and inner tube 2 is equipped with suction inlet 103 and suction inlet two 201 respectively, and wherein, suction inlet 103 is annular suction inlet because of the reason of suction inlet two 201, be equipped with stopper 5 in suction inlet two 201, plugs suction inlet two 201 with stopper 5 during the imbibition, inner tube 2 upper end is passed through annular fixed plate 6 sealing connection on the inner wall of outer tube 1, and the upper portion lateral wall of inner tube 2 is equipped with through-hole 7 with outer tube 1 intercommunication. When the liquid is transferred more due to improper operation, the solution firstly enters the cavity between the outer tube 1 and the inner tube 2 from the suction port I103, then rises to enter the cavity of the inner tube 2 through the through hole 7, and then is buffered in the cavity of the inner tube 2 and cannot continuously rise to enter a liquid transferring gun, so that the effect of preventing back pumping is achieved; in addition, the pollutant that drops from the pipette nozzle also can not directly fall into the solution bottle along the lateral wall of outer tube 1, but in the smooth 2 chambeies of inner tube to avoid two-way cross contamination, the solution that absorbs promptly can not pumpback to the pipette, and the pollutant in the pipette also can not directly drip to the solution bottle that holds the solution, only need pull out the stopper 5 of suction inlet two during the washing and just can emit the solution in the 2 chambeies of inner tube.

Further, a filter 8 detachably connected with the outer pipe is arranged outside the first suction opening 103 of the outer pipe 1, the filter 8 comprises a connecting portion 801 connected with the outer pipe and a filtering portion 802 used for filtering, an internal thread is arranged on the connecting portion 801 of the filter 8, an external thread is arranged on the outer wall of the first suction opening 103 of the outer pipe 1, the filter 8 is connected with the outer pipe 1 in a threaded manner, the filtering portion 802 of the filter 8 is a filter screen provided with filter holes, and the filtering portion 802 is in a hemispherical shape. Sometimes, a liquid transfer gun head is needed to operate the suspension, a suction port is likely to be blocked by larger solid particles during operation, a common method is generally to perform a series of operations such as centrifugation or filtration on the suspension in advance, the processes can occupy a large amount of manpower, material resources and time, the filter tip 8 is arranged at the suction port, so that the solid particles larger than the pore diameter of the filter part in the suspension can be blocked outside and cannot enter the lumen, and liquid can freely enter and exit, so that the gun head body is not blocked by the solid particles; in addition, the filter 8 is detachably connected to the outside of the suction port, so that the filter 8 can be disconnected when the filtering liquid transfer is not needed, and the filter 8 can be connected when only needed, and in addition, when most of filter holes of the filter 8 are blocked due to the previous liquid transfer, the filter can be screwed out to replace a new filter 8, and the filter is very convenient.

Finally, it should be noted that: these embodiments are merely illustrative of the present invention and do not limit the scope of the invention. In addition, other variations and modifications will be apparent to persons skilled in the art based on the foregoing description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications may be made without departing from the scope of the present invention.

Claims (4)

1. The utility model provides an interface section thickened type liquid-transfering gun head, includes rifle head body, its characterized in that: the pipette head body comprises an outer tube (1) and an inner tube (2) which are communicated, the outer tube (1) comprises an upper joint section (101) and a lower imbibing section (102), the joint section (101) is in threaded connection with a thickening ring (3), spherical fixing grooves (301) are formed in two opposite sides of the thickening ring (3), movably connected connecting strips (4) are arranged in the fixing grooves (301), clamping blocks (401) matched with the fixing grooves (301) are arranged at two ends of each connecting strip (4), the clamping blocks (401) are movably clamped in the fixing grooves (301), the two pipette head bodies are detachably connected together through the connecting strips (4), a suction port I (103) and a suction port II (201) are respectively arranged at the lower ends of the outer tube (1) and the inner tube (2), a plug (5) is arranged in the suction port II (201), the upper end of the inner tube (2) is hermetically connected to the inner wall of the outer tube (1) through an annular fixing plate (6), the side wall of the upper part of the inner pipe (2) is provided with a through hole (7) communicated with the outer pipe (1).

2. A pipette tip according to claim 1, of the interface section thickened type, wherein: the filter tip (8) is detachably connected to the outside of the first suction opening (103) of the outer pipe (1), and the filter tip (8) comprises a connecting portion (801) connected with the outer pipe (1) and a filtering portion (802) used for filtering.

3. A pipette tip according to claim 2, of the interface section thickened type, wherein: the filter tip is characterized in that a connecting portion (801) of the filter tip (8) is provided with an internal thread, an external thread is arranged on the outer wall of a suction port I (103) of the outer tube (1), and the filter tip (8) is connected with the outer tube (1) in a threaded mode.

4. A pipette tip according to claim 2, of the interface section thickened type, wherein: the filter part (802) of the filter tip (8) is a filter screen provided with filter holes, and the filter part (802) is hemispherical.

Images