Multi-head micropipettor

Abstract

The utility model discloses a multi-head micropipettor. The multi-head micropipettor comprises a pipettor main body, the bottom of the pipettor main body is fixedly connected with a pipetting suction pipe, the bottom of the pipetting suction pipe is provided with a connecting piece, the top of the connecting piece is provided with a mounting mechanism, and one side of the mounting mechanism is provided with a fixing mechanism; and the mounting mechanism comprises a fixing ring which is fixedly connected with the outer wall of the top of the connecting piece and communicates with the interior of the connecting piece, a fixing groove is formed in the top of the fixing ring, and a mounting ring is slidably connected to the inner wall of the fixing groove. According to the multi-head micropipettor provided by the utility model, the mounting ring is inserted into the inner wall of the fixing ring and the fixing groove, the gear can rotate after the rack is in contact with the gear, the limiting rod can be reset by matching with the elastic force of the limiting spring, the gear can be limited by the limiting rod, and then the mounting ring is fixed, so that the multi-head micropipettor is directly mounted through insertion connection; and the effect of reducing the labor intensity of workers is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipettor technical field especially relates to a multi -head micro pipettor. BACKGROUND

[0002] The pipettor commonly used in biological laboratory is a kind of precise liquid taking instrument, and the basic principle is to rely on the up-down movement of piston in instrument, absorbs and removes the gas in piston cavity, and then realizes the liquid taking and liquid discharging of the gun head connected with piston cavity, and the liquid suction volume and liquid discharge volume depend on the sectional area of piston and the distance of piston up-down movement, and a multi -head micro pipettor is needed.

[0003] The prior art discloses a kind of medical experiment micro pipettor, including outer cylinder, press bar, pipette tip and pipette, the top of press bar is fixedly installed with pressing base, and opening is provided on pressing base Installation groove faces upwards, buffer assembly is installed in installation groove inside, and the bottom of buffer assembly is fixedly installed in the bottom of installation groove, and the top of buffer assembly is fixedly installed in the bottom surface of pressing block.

[0004] However, the connecting piece and the pipette tip are fixedly connected when the above-mentioned device is used, in order to ensure stable fixation and avoid liquid leakage, generally fixedly connected by bolt, the staff needs to disassemble and assemble it by means of tool, which is inconvenient for the operation of staff.

[0005] Therefore, it is necessary to provide a multi -head micro pipettor to solve the above technical problems. UTILITY MODEL CONTENT

[0006] In view of the above situation, in order to overcome the defects of prior art, the utility model provides a kind of multi -head micro pipettor, which can be directly installed by inserting, and the effect of reducing the labor intensity of staff is realized.

[0007] To achieve the above object, the technical scheme adopted by the utility model is as follows:

[0008] Multi -head micro pipettor, including pipettor main part, the bottom of pipettor main part is fixedly connected with pipette tube, the bottom of pipette tube is provided with connecting piece, the top of connecting piece is provided with mounting mechanism, and the side of mounting mechanism is provided with fixed mechanism;

[0009] The mounting mechanism includes fixed ring fixedly connected with the top outer wall of connecting piece and connected with the inner communication of connecting piece, the top of fixed ring is provided with fixed slot, the inner wall of fixed slot is slidably connected with mounting ring, the mounting ring is fixedly connected between mounting ring and pipette tube, the mounting ring is double-layered annular structure, the outer edge annular length of mounting ring is less than the inner edge annular length of mounting ring, directly installed by inserting, and the effect of reducing the labor intensity of staff is realized.

[0010] Preferably, the bottom of the mounting ring is fixedly connected with a clamping ring, the clamping ring is in L-shaped structure, and the clamping ring is arranged to cooperate with the sealing ring to seal the mounting ring and the fixed ring and to avoid splashing of residual liquid in the connecting piece during disassembly.

[0011] Preferably, the bottom of the clamping ring is fixedly connected with a sealing ring, the sealing ring is in contact with the inner wall of the fixed ring and forms a sliding fit, the sealing ring is made of rubber, and a cavity is formed in the sealing ring.

[0012] Preferably, the fixing mechanism comprises two symmetrical racks fixedly connected with the inner wall of the mounting ring, rotating openings are formed in the outer walls of the fixed ring, one rotating shaft is rotatably connected between the inner walls of the two ends of the rotating opening through a bearing, a gear is fixedly connected to the surface of the rotating shaft, and the gear is engaged with the rack.

[0013] Preferably, a movable limiting rod is arranged in the rotating opening, the limiting rod is in sliding fit with the inner wall of the gear on one side, and the limiting rod is in T-shaped structure.

[0014] Preferably, the bottom of the limiting rod is fixedly connected with a limiting block in T-shaped structure, a limiting groove in T-shaped structure is formed in the bottom inner wall of the rotating opening, and the inner wall of the limiting groove is in sliding fit with the limiting block.

[0015] Preferably, one end of the limiting rod is fixedly connected with a limiting spring, and the limiting spring is fixedly connected between the end wall of the rotating opening.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] (1) The utility model discloses a mounting ring is inserted into the inner wall of the fixed ring and the fixed groove, the gear can be rotated after the rack and the gear contact, the elastic force of the limiting spring can reset the limiting rod, the limiting rod can limit the gear, and the mounting ring is fixed, so that the effect of reducing the labor intensity of the staff is realized by inserting and directly installing.

[0018] (2) The clamping ring can cooperate with the sealing ring to seal the mounting ring and the fixed ring, and can avoid splashing of residual liquid in the connecting piece during disassembly.

[0019] (3) The utility model discloses a limiting block can slide in the inner wall of the limiting groove, and the position of the limiting rod can be adjusted conveniently for the staff, and the limiting spring can exert pressure on the limiting rod, so that the limiting rod can be reset conveniently. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A three-dimensional structure schematic view of a multi-head micropipette is provided in the utility model.

[0021] Figure 2 A structure schematic view of a multi-head micropipette highlighting a clamping ring is provided in the utility model.

[0022] Figure 3 A structure schematic view of a multi-head micropipette highlighting a limiting spring is provided in the utility model.

[0023] Figure 4 A Figure 3 An enlarged structure schematic view of part A is provided in the utility model.

[0024] Figure 5 A structure schematic view of a multi-head micropipette highlighting a clamping ring is provided in the utility model.

[0025] Corresponding names of the reference signs are as follows: 1, pipette main body; 2, pipette suction tube; 3, connecting piece; 4, fixed ring; 5, fixed groove; 6, mounting ring; 7, clamping ring; 8, sealing ring; 9, cavity; 10, rack; 11, rotating port; 12, rotating shaft; 13, gear; 14, limiting rod; 15, limiting groove; 16, limiting block; 17, limiting spring. DETAILED DESCRIPTION

[0026] The utility model will be further described below in combination with the drawings and examples, and the mode of the utility model includes but is not limited to the following examples.

[0027] First embodiment:

[0028] As Figures 1-5 shown, the bottle cap for storing honey provided in the utility model includes a pipette main body 1, the bottom of the pipette main body 1 is fixedly connected with a pipette suction tube 2, the bottom of the pipette suction tube 2 is provided with a connecting piece 3, the top of the connecting piece 3 is provided with a mounting mechanism, and one side of the mounting mechanism is provided with a fixing mechanism.

[0029] The mounting mechanism includes a fixed ring 4 fixedly connected between the top outer wall of the connecting piece 3 and in communication with the connecting piece 3, the top of the fixed ring 4 is provided with a fixed groove 5, the inner wall of the fixed groove 5 is slidably connected with a mounting ring 6, the mounting ring 6 is fixedly connected between the mounting ring 6 and the pipette suction tube 2, the mounting ring 6 is in double-layer annular structure, the outer edge annular length of the mounting ring 6 is less than the inner edge annular length of the mounting ring 6, and the reference Figures 1-5When in use, the mounting ring 6 fixedly connected with the pipette 2 is inserted into the inner wall of the fixed ring 4 and the fixed groove 5, and the gear 13 can be rotated after the rack 10 contacts the gear 13; at this time, the limiting rod 14 can make the limiting block 16 slide in the inner wall of the limiting groove 15, and the limiting spring 17 is extruded after the limiting rod 14 is separated from the gear 13; after the fixed ring 4 is clamped into the bottom inner wall of the fixed groove 5 and the sealing ring 8 is located below the rotating port 11, the elastic force of the limiting spring 17 can reset the limiting rod 14, the limiting rod 14 can limit the gear 13, and then the mounting ring 6 is fixed, so that the installation is directly realized by insertion, and the effect of reducing the labor intensity of workers is realized.

[0030] By setting the bottom of the clamping ring 7 to be inclined, the residual liquid in the connecting piece 3 can be limited, and splashing can be avoided; the sealing ring 8 cooperates with the clamping ring 7 to avoid liquid leakage; when the connecting piece 3 is disassembled, the limiting rod 14 is directly moved, and the mounting ring 6 is separated from the fixed groove 5, and the disassembly is completed.

[0031] Second embodiment:

[0032] As shown in Figure 5 , the bottom of the mounting ring 6 is fixedly connected with the clamping ring 7, and the clamping ring 7 is in L-shaped structure.

[0033] By setting the clamping ring 7, the sealing between the fixed ring 4 and the mounting ring 6 can be realized in cooperation with the sealing ring 8, and the residual liquid in the connecting piece 3 can also be prevented from splashing out during disassembly.

[0034] Third embodiment:

[0035] In order to ensure the sealing performance, the one side bottom of the clamping ring 7 is fixedly connected with the sealing ring 8, the sealing ring 8 is in contact with the inner wall of the fixed ring 4 and forms a sliding fit, the sealing ring 8 is made of rubber material, and the cavity 9 is formed in the sealing ring 8.

[0036] By setting the sealing ring 8, the inner wall of the fixed ring 4 can be extruded, and the liquid can be prevented from leaking through the gap between the mounting ring 6 and the fixed ring 4.

[0037] Fourth embodiment:

[0038] As shown in Figures 3-4 , the fixing mechanism comprises two racks 10 which are symmetrically distributed and fixedly connected with the inner wall of the mounting ring 6; the both sides of the fixed ring 4 are provided with rotating ports 11, the same rotating shaft 12 is rotatably connected between the inner walls of the both ends of the rotating port 11 through a bearing, the gear 13 is fixedly connected to the surface of the rotating shaft 12, and the gear 13 is engaged with the rack 10.

[0039] By setting the gear 13 can be in the rack 10 movement, with rotating shaft 12 rotation operation, both can ensure the linear installation ring 6 disassembly, also can be in the gear 13 limit, so that the rack 10 limit.

[0040] Fifth embodiment:

[0041] As shown in Figures 3-4 the rotating mouth 11 is provided with a movable limit rod 14, one side of the limit rod 14 and the inner wall of the gear 13 form a sliding fit, the limit rod 14 is T-shaped structure.

[0042] By setting the limit rod 14 can be in contact with the inner wall of the gear 13, the gear 13 is limited, which can be in contact with the inner wall of the gear 13, the gear 13 is convenient for rotation operation.

[0043] Sixth embodiment:

[0044] In order to ensure the linear movement of the limit rod 14, the bottom of the limit rod 14 is fixedly connected with the limit block 16 which is T-shaped structure, the bottom inner wall of the rotating mouth 11 is provided with the limit slot 15 which is T-shaped structure, the inner wall of the limit slot 15 and the limit block 16 form a sliding fit.

[0045] By setting the limit block 16 can be in the inner wall of the limit slot 15, which can facilitate the staff to adjust the position of the limit rod 14.

[0046] Seventh embodiment:

[0047] As shown in Figures 3-4 , one end of the limit rod 14 is fixedly connected with the limit spring 17, and the limit spring 17 is fixedly connected between the end wall of the rotating mouth 11.

[0048] By setting the limit spring 17 can exert pressure on the limit rod 14, which can facilitate the reset of the limit rod 14.

[0049] Working principle: through the sealing ring 8 cooperation clamping ring 7 can avoid the leakage, in the rack 10 and gear 13 contact can make the gear 13 rotation, at this time, pull the limit rod 14 can make the limit block 16 in the inner wall of the limit slot 15, in the fixed ring 4 card to the fixed slot 5 bottom inner wall and sealing ring 8 is located below the rotating mouth 11, the limit spring 17 elastic force cooperation limit rod 14 can make the gear 13 limit, and then make the installation ring 6 fixed, when the connecting piece 3 is disassembled, directly move the limit rod 14 and make the installation ring 6 and fixed slot 5 separate, therefore, through the plug directly installed, realize the effect of reducing the labor intensity of workers.

[0050] The above embodiment is only one of the preferred embodiments of the present application, and should not be used to limit the protection scope of the present application, but any insignificant modification or polishing made in the main design idea and spirit of the present application, the technical problems solved are still consistent with the present application, and should be included in the protection scope of the present application.

Claims

1. A multi-head micropipette, comprising a pipette body (1), wherein a pipette tube (2) is fixedly connected to the bottom of the pipette body (1), and a connector (3) is provided at the bottom of the pipette tube (2), characterized in that, The top of the connector (3) is provided with an installation mechanism, and a fixing mechanism is provided on one side of the installation mechanism; The mounting mechanism includes a fixing ring (4) that is fixedly connected to the top outer wall of the connector (3) and communicates with the inside of the connector (3). The top of the fixing ring (4) is provided with a fixing groove (5). The inner wall of the fixing groove (5) is slidably connected to an installation ring (6). The installation ring (6) is fixedly connected to the pipette (2). The installation ring (6) has a double-ring structure. The length of the outer ring of the installation ring (6) is less than the length of the inner ring of the installation ring (6).

2. The multi-head micropipette according to claim 1, characterized in that, The bottom of the mounting ring (6) is fixedly connected to a locking ring (7), which has an L-shaped structure.

3. A multi-head micropipette according to claim 2, characterized in that, A sealing ring (8) is fixedly connected to one side bottom of the positioning ring (7). The sealing ring (8) is in contact with the inner wall of the fixing ring (4) and forms a sliding fit. The sealing ring (8) is made of rubber and has a cavity (9) inside.

4. A multi-head micropipette according to claim 1, characterized in that, The fixing mechanism includes two symmetrically distributed racks (10), which are fixedly connected to the inner wall of the mounting ring (6). The outer walls on both sides of the fixing ring (4) are provided with rotating openings (11). The inner walls at both ends of the rotating openings (11) are rotatably connected to the same rotating shaft (12) through bearings. A gear (13) is fixedly connected to the surface of the rotating shaft (12), and the gear (13) meshes with the rack (10).

5. A multi-head micropipette according to claim 4, characterized in that, A movable limiting rod (14) is provided inside the rotating port (11). One side of the limiting rod (14) forms a sliding fit with the inner wall of the gear (13). The limiting rod (14) has a T-shaped structure.

6. A multi-head micropipette according to claim 5, characterized in that, The bottom of the limiting rod (14) is fixedly connected to a limiting block (16) with a T-shaped structure, and the bottom inner wall of the rotating port (11) is provided with a limiting groove (15) with a T-shaped structure. The inner wall of the limiting groove (15) and the limiting block (16) form a sliding fit.

7. A multi-head micropipette according to claim 6, characterized in that, One end of the limiting rod (14) is fixedly connected to a limiting spring (17), and the limiting spring (17) is fixedly connected to the end wall of the rotating port (11).

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