CN202113872U

CN202113872U - Adjustable micropipettor

Info

Publication number: CN202113872U
Application number: CN201120154464XU
Authority: CN
Inventors: 梅方敏
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-05-13
Filing date: 2011-05-13
Publication date: 2012-01-18
Anticipated expiration: 2021-05-13

Abstract

The utility model discloses an adjustable micropipettor, which comprises a device body serving as an outer casing. A pushing column extending axially is arranged in a cavity of the device body, an amount regulating screw is slidingly arranged on the outer peripheral wall of the pushing column in sleeve mode, the amount regulating screw is in thread fit with a capacity regulation sleeve fixed on the inner peripheral wall in the device body, an adjusting disk matched with an upper end opening of the device body in clamping mode is further sleeved on the top of the amount regulating screw, an axially extending track matched with a sliding column arranged at the top of the amount regulating screw is arranged on the inner peripheral wall in the adjustable disk, a tension band is fixed at the waist portion of the adjusting disk, an upper clamp spring groove and a lower clamp spring groove which are matched with the tension band are arranged on the upper peripheral wall of the inner cavity of the device body, a plurality of capacity locking gears are fixedly arranged on the lower peripheral edge of a cap of the adjusting disk, and capacity locking grooves matched with the capacity locking gears in inserting and locking mode are correspondingly arranged on the upper end opening of the device body. The adjustable micropipettor has the advantages of being compact in structure, simple and convenient to adjust, accurate to measure, small in misoperation possibility.

Description

A kind of adjustable micropipettor

Technical field

The utility model relates to the apparatus that is used for the sample circuit liquid feeding, relates in particular to pipettor, specifically a kind of adjustable micropipettor.

Background technology

Pipettor divides quantitatively and adjustable two kinds for measuring the formula weight device, and initial pipettor is not owing to be provided with the imbibition nozzle push rod; After finishing, liquid to be moved also need manual work that imbibition nozzle is taken off; The infection that is prone to that the staff is received and is moved liquid is prone to again make simultaneously and is moved liquid and polluted, and it is also inconvenient to operate.Though the pipettor after the improvement has increased the imbibition nozzle push rod, because its piston machining accuracy is not high, sealing effectiveness is bad, can only realize coarse adjustment, and therefore, reliability is not high.ZL200420020854.8 discloses a kind of pipettor that can realize fine tuning; Not locking of the volume regulator of this pipettor; If run into volume regulator because of carelessness or cause volume regulator to rotate voluntarily, then can have a strong impact on the pipettor metering accuracy when moving liquid because of other maloperations.

Summary of the invention

The utility model technical problem to be solved is to above-mentioned prior art present situation, and a kind of adjustable micropipettor is provided, with traditional pipettor relatively, have compact conformation, regulate simple, convenient, metering accurately, the maloperation possibility little characteristics.

The utility model solves the problems of the technologies described above the skill scheme that is adopted: a kind of adjustable micropipettor; Comprise be set in drive on the muzzle and the double apparatus main body of doing shell and can be in the apparatus main body inner chamber reciprocating plunger; Be equipped with axially extended promotion post in the apparatus main body inner chamber; This promotion post periphery wall slip cap is provided with accent amount screw rod; Accent amount screw rod cooperates with capacity regulating external threading on being fixed on the apparatus main body internal perisporium, and accent amount screw rod top also is arranged with and can blocks the adjustment disk of joining mutually with the apparatus main body port, and this adjustment disk internal perisporium is equipped with the axially extended runway that matches with accent amount screw rod top traveller; The adjustment disk waist is fixed with cranse; Apparatus main body inner chamber upper perimeter wall is shaped on last jump ring groove and the lower circlip groove that matches with cranse, and block edge next week of adjustment disk is set with a plurality of capacity locking teeths, and the apparatus main body port is shaped on the capacity lock slots that inserts lock fit with the capacity locking teeth accordingly.

For optimizing technique scheme, the concrete measure of taking also comprises:

Above-mentioned adjustment disk periphery wall bottom is provided with the locating slot that axially has certain-length, is shaped on the hole on the apparatus main body housing, in this hole alignment pin is housed, and this alignment pin stretches in the locating slot.

Above-mentioned imbibition rod rear end hole is inserted with depression bar, and depression bar is set with spring, and this depression bar insertion end slides and be fitted with the O RunddichtringO, the other end with promote the conflict of post front end and cooperate.

Above-mentioned capacity regulating cover outer peripheral face suit one counter, the accent of this counter is counted bar and is stretched in the capacity regulating cover inner chamber, and can overlap in capacity regulating and make circular motion in the inner chamber, apparatus main body and rolling counters forward device opposite position be provided with one be used for reading window.

Above-mentioned imbibition bar upper end is fixedly connected with the apparatus main body lower port through the attaching nut.

Above-mentionedly drive the protective disc that muzzle and corresponding position, attaching nut position are provided with a horizontal expansion, and this protective disc shape and attaching nut's outline adapts.

Said apparatus main body upper end is provided with handguard, and this handguard is the low hooked shape structures in middle high two ends.

Above-mentioned promotion capital end is arranged with button cap.

Above-mentioned counter is the digital gear counter.

Above-mentioned capacity locking teeth quantity is 10.

Compared with prior art, be equipped with axially extended promotion post in the apparatus main body inner chamber of the utility model, this promotion post periphery wall slip cap is provided with accent amount screw rod, and accent amount screw rod cooperates with capacity regulating external threading on being fixed on the apparatus main body internal perisporium; Accent amount screw rod top also is arranged with and can blocks the adjustment disk of joining mutually with the apparatus main body port, and this adjustment disk internal perisporium is equipped with the axially extended runway that matches with accent amount screw rod top traveller, and the adjustment disk waist is fixed with cranse, and apparatus main body inner chamber upper perimeter wall is shaped on last jump ring groove and the lower circlip groove that matches with cranse; Block edge next week of adjustment disk is set with a plurality of capacity locking teeths, and the apparatus main body port is shaped on the capacity lock slots that inserts lock fit with the capacity locking teeth accordingly, and the adjustment disk internal perisporium is equipped with the axially extended runway that matches with accent amount screw rod top traveller, and accent amount screw rod is axially moved with respect to adjustment disk; Apparatus main body inner chamber upper perimeter wall is shaped on last jump ring groove and the lower circlip groove that matches with cranse, during pondage, upwards spurs adjustment disk, makes cranse fall into the jump ring groove; The rotation adjusting dish, promptly adjustable capacity after the adjusting end, is pressed adjustment disk downwards; Make cranse fall into the lower circlip groove, the capacity locking teeth on the adjustment disk buckles in the capacity lock slots simultaneously, makes adjustment disk not rotatable, and maloperation changes capacity in preventing to use; Regulate simply, conveniently, increased the precision of pipettor, adjustment disk periphery wall bottom is provided with the locating slot that axially has certain-length; Is shaped on the hole on the apparatus main body housing, in this hole alignment pin is housed, and this alignment pin stretches in the locating slot, this design make alignment pin can with locating slot upper end edge and the inconsistent cooperation of lower end edge; Make the axially-movable that adjustment disk can not be unlimited, thereby this design makes in the time of can preventing operate miss pondage damage pipettor greater than the pipettor heap(ed) capacity, imbibition rod rear end hole is inserted with depression bar, and depression bar is set with spring; And this depression bar insertion end is slided and is fitted with the O RunddichtringO, and the other end is conflicted with promotion post front end and cooperated, and promotes post during imbibition to pressing down, and depression bar is pressed in the imbibition bar; Because the depression bar insertion end is slided and is fitted with the O RunddichtringO,, promote post and reset the depression bar travelling backwards again so the air in the imbibition bar is extruded away; In the imbibition bar, form draught head, in draws fluid imbibition bar, promptly accomplished the imbibition action, the O RunddichtringO can well produce sealing effectiveness; Draught head can accurately be controlled, realized accurate measurement, capacity regulating cover outer peripheral face suit one counter, the accent of this counter is counted bar and is stretched in the capacity regulating cover inner chamber; And can overlap in capacity regulating and make circular motion in the inner chamber, apparatus main body and rolling counters forward device opposite position be provided with one be used for reading window, counter has been arranged, the user can observe the metering that moves liquid easily; Make that to move liquid more accurate, drive the protective disc that muzzle and corresponding position, attaching nut position are provided with a horizontal expansion, and this protective disc shape and attaching nut's outline adapts, the attaching nut must be sleeved on the apparatus main body lower end closely; If become flexible, can influence the precision of metering, protective disc is set makes the attaching nut be difficult for being touched, it is loosening to reduce the attaching nut who causes because of maloperation; Further promoted the precision of this pipettor, the apparatus main body upper end is provided with handguard, and this handguard is the low hooked shape structures in middle high two ends; Promote the capital end and be arranged with button cap, counter is the digital gear counter, and these designs all are in order to let the convenient comfortable use pipettor of user's ability.

Description of drawings

Fig. 1 is the structural representation of the embodiment of the invention;

Fig. 2 is the front view of the apparatus main body of the embodiment of the invention;

Fig. 3 is the stereogram of the embodiment of the invention;

Fig. 4 is that overlooking of Fig. 1 partly cutd open figure;

Fig. 5 is the front view of Fig. 1.

The specific embodiment

Embodiment to the utility model describes in further detail below in conjunction with accompanying drawing.

Fig. 1 is extremely shown in Figure 5 to be the structural representation of the utility model.

Reference numeral wherein is: apparatus main body 1, hole 10, threaded body 11, window 12, go up jump ring groove 13, lower circlip groove 14, capacity lock slots 15, capacity regulating cover 16, handguard 17, adjustment disk 20, block 20a, traveller 21, promote post 22, accent amount screw rod 23, locating slot 24, runway 25, capacity locking teeth 26, cranse 27, button cap 28, imbibition bar 31, attaching nut 32, depression bar 33, drive muzzle 40, protective disc 41, alignment pin 5, counter 6, transfer number bar 61.

Extremely shown in Figure 5 like Fig. 1; A kind of adjustable micropipettor of the utility model; Comprise the imbibition bar 31 that has liquid sucting port; Be sleeved on the imbibition bar 31 and have by hand drive muzzle 40, be set in drive on the muzzle 40 and the double apparatus main body 1 of doing shell and can be in apparatus main body 1 inner chamber reciprocating plunger, be equipped with axially extended promotion post 22 in apparatus main body 1 inner chamber; These promotion post 22 periphery wall slip caps are provided with accent amount screw rod 23; Accent amount screw rod 23 cooperates with the threaded body 11 of capacity regulating cover 16 on being fixed on apparatus main body 1 internal perisporium, and accent amount screw rod 23 tops also are arranged with and can block the adjustment disk 20 of joining mutually with apparatus main body 1 port, and these adjustment disk 20 internal perisporiums are equipped with the axially extended runway 25 that matches with accent amount screw rod 23 top travellers 21; Adjustment disk 20 waists are fixed with cranse 27; Apparatus main body 1 inner chamber upper perimeter wall is shaped on the last jump ring groove 13 and lower circlip groove 14 that matches with cranse 27, and block 20a edge next week of adjustment disk 20 is set with a plurality of capacity locking teeths 26, and apparatus main body 1 port is shaped on the capacity lock slots 15 that inserts lock fit with capacity locking teeth 26 accordingly.The adjustment disk internal perisporium is equipped with the axially extended runway that matches with accent amount screw rod top traveller, and accent amount screw rod 23 is axially moved with respect to adjustment disk 20, and apparatus main body 1 inner chamber upper perimeter wall is shaped on the last jump ring groove 13 and lower circlip groove 14 that matches with cranse 27; During pondage, upwards spur adjustment disk 20, make cranse 27 fall into jump ring groove 13; Rotation adjusting dish 20 drives accent amount screw rod 23 and follows rotation, because accent amount screw rod 23 overlaps 16 threaded engagement with capacity regulating; So 23 rotations of accent amount screw rod can make and self produce axial displacement, have realized the adjusting of capacity, in addition; Adjustment disk 20 internal perisporiums are equipped with the axially extended runway 25 that matches with accent amount screw rod 23 top travellers 21, and accent amount screw rod 23 can slide on runway 25 and do not drive adjustment disk 20 and move together when accent amount screw rod 23 produced axial displacements, had made things convenient for operation; After regulating end, press adjustment disk 20 downwards, make cranse 27 fall into lower circlip groove 14; Capacity locking teeth 26 on the adjustment disk 20 buckles in the capacity lock slots 15 simultaneously, makes adjustment disk 20 not rotatable, and maloperation changes capacity in preventing to use; Regulate simply, conveniently, increased the precision of pipettor.

Among the embodiment, adjustment disk 20 periphery wall bottoms are provided with the locating slot 24 that axially has certain-length, are shaped on hole 10 on apparatus main body 1 housing, in this hole 10 alignment pin 5 are housed, and this alignment pin 5 stretches in the locating slot 24.This design make alignment pin 5 can with locating slot 24 upper end edges and the inconsistent cooperation of lower end edge, make the axially-movable that adjustment disk 20 can not be unlimited, thereby this design makes in the time of can preventing operate miss pondage damage pipettor greater than the pipettor heap(ed) capacity.

Among the embodiment, imbibition bar 31 back stomidiums are inserted with depression bar 33, and depression bar 33 is set with spring, and these depression bar 33 insertion ends slide and be fitted with the O RunddichtringO, the other end with promote the conflict of post 22 front ends and cooperate.Promote post 22 during imbibition to pressing down, depression bar 33 is pressed in the imbibition bar 31, be fitted with the O RunddichtringO because depression bar 33 insertion ends are slided; So the air in the imbibition bar 31 is extruded away, promotes post 22 and reset depression bar 33 travelling backwards again; In imbibition bar 31, form draught head, in draws fluid imbibition bar 31, promptly accomplished the imbibition action; The O RunddichtringO can well produce sealing effectiveness, and draught head can accurately be controlled, and has realized accurate measurement.

Among the embodiment; Capacity regulating is overlapped 16 outer peripheral face suits, one counter 6; The accent of this counter 6 is counted bar 61 and is stretched into capacity regulating and overlap in 16 inner chambers, and can overlap in 16 inner chambers in capacity regulating and make circular motion, apparatus main body 1 and rolling counters forward device 6 opposite positions be provided with one be used for reading window 12.Counter 6 has been arranged, and the user can observe the metering that moves liquid easily, makes that to move liquid more accurate.

Among the embodiment, imbibition bar 31 upper ends are fixedly connected with apparatus main body 1 lower port through attaching nut 32.Attaching nut 32 is fixed together imbibition bar 31 and apparatus main body 1, and the operation to depression bar 33 can conveniently be communicated on the imbibition bar 31.

Among the embodiment, drive the protective disc 41 that muzzle 40 and corresponding position, attaching nut 32 position are provided with a horizontal expansion, and these protective disc 41 shapes and attaching nut's 32 outline adapts.Attaching nut 32 must be sleeved on apparatus main body 1 lower end closely; If become flexible, can influence the precision of metering, protective disc 41 is set makes attaching nut 32 be difficult for being touched; Minimizing is loosening because of the attaching nut 32 that maloperation causes, and has further promoted the precision of this pipettor.

Among the embodiment, apparatus main body 1 upper end is provided with handguard 17, and this handguard 17 is the low hooked shape structures in middle high two ends.The tiger shape of this kind structure and staff adapts, and convenient taking held.

Among the embodiment, promote post 22 tops and be arranged with button cap 28.The handled easily personnel press and promote post 22, increase the comfort of operation.

Among the embodiment, counter 6 is the digital gear counter.

Among the embodiment, capacity locking teeth 26 quantity are 10.

The most preferred embodiment of the utility model is illustrated, and various variations of being made by those of ordinary skills or remodeling can not break away from the scope of the utility model.

Claims

1. adjustable micropipettor; Comprise be set in drive that muzzle (40) is gone up and the double apparatus main body (1) of doing shell and can be in apparatus main body (1) inner chamber reciprocating plunger; It is characterized in that: be equipped with axially extended promotion post (22) in said apparatus main body (1) inner chamber; This promotion post (22) periphery wall slip cap is provided with accent amount screw rod (23); Said accent amount screw rod (23) be fixed on capacity regulating cover (16) threaded engagement on said apparatus main body (1) internal perisporium; Said accent amount screw rod (23) top also is arranged with and can blocks the adjustment disk (20) of joining mutually with apparatus main body (1) port; This adjustment disk (20) internal perisporium is equipped with the axially extended runway (25) that matches with accent amount screw rod (23) top traveller (21), and said adjustment disk (20) waist is fixed with cranse (27), and apparatus main body (1) inner chamber upper perimeter wall is shaped on last jump ring groove (13) and the lower circlip groove (14) that matches with said cranse (27); Block (20a) edge next week of said adjustment disk (20) is set with a plurality of capacity locking teeths (26), and said apparatus main body (1) port is shaped on the capacity lock slots (15) that inserts lock fit with said capacity locking teeth (26) accordingly.

2. a kind of adjustable micropipettor according to claim 1; It is characterized in that: said adjustment disk (20) periphery wall bottom is provided with the locating slot (24) that axially has certain-length; Be shaped on hole (10) on said apparatus main body (1) housing; Alignment pin (5) is housed in this hole (10), and this alignment pin (5) stretches in the locating slot (24).

3. a kind of adjustable micropipettor according to claim 2; It is characterized in that: said imbibition bar (31) back stomidium is inserted with depression bar (33); Said depression bar (33) is set with spring; And this depression bar (33) insertion end is slided and is fitted with the O RunddichtringO, and the other end is conflicted with said promotion post (22) front end and cooperated.

4. a kind of adjustable micropipettor according to claim 3; It is characterized in that: said capacity regulating cover (16) outer peripheral face suit one counter (6); The accent of this counter (6) is counted bar (61) and is stretched in capacity regulating cover (16) inner chamber; And can in capacity regulating cover (16) inner chamber, make circular motion, said apparatus main body (1) and rolling counters forward device (6) opposite position be provided with one be used for reading window (12).

5. a kind of adjustable micropipettor according to claim 4 is characterized in that: said imbibition bar (31) upper end is fixedly connected with apparatus main body (1) lower port through attaching nut (32).

6. a kind of adjustable micropipettor according to claim 5; It is characterized in that: saidly drive the protective disc (41) that muzzle (40) and said attaching nut (32) corresponding position, position are provided with a horizontal expansion, and this protective disc (41) shape and said attaching nut's (32) outline adapts.

7. a kind of adjustable micropipettor according to claim 6 is characterized in that: said apparatus main body (1) upper end is provided with handguard (17), and this handguard (17) is the low hooked shape structures in middle high two ends.

8. a kind of adjustable micropipettor according to claim 7 is characterized in that: said promotion post (22) top is arranged with button cap (28).

9. a kind of adjustable micropipettor according to claim 8 is characterized in that: said counter (6) is the digital gear counter.

10. a kind of adjustable micropipettor according to claim 9 is characterized in that: said capacity locking teeth (26) quantity is 10.