CN210045423U - Liquid taking mechanism for low-speed table type centrifugal machine - Google Patents

Abstract

The utility model relates to a liquid taking mechanism for a low-speed table centrifuge, which comprises a bottle cap body, wherein the middle part of the bottle cap body is provided with a through jack, and the periphery of the jack is provided with a fixed ring plate; the fixed ring plate is vertically fixed on the outer wall of the bottle cap; a rubber head dropper is inserted in the fixed ring plate and is in sliding fit with the fixed ring plate; a locking component used for locking the position of the rubber head dropper on the fixing ring plate is additionally arranged between the rubber head dropper and the fixing ring plate. The utility model discloses set up sliding connection's rubber head drip tube on the bottle lid body, can realize getting liquid of supernatant when not influencing centrifugal effect, improved the clarity of getting liquid to improve the experimental accuracy in later stage.

Description

Liquid taking mechanism for low-speed table type centrifugal machine

Technical Field

The utility model relates to a desk-top centrifuge of low-speed especially relates to a get liquid mechanism for desk-top centrifuge of low-speed.

Background

Centrifuges are machines that utilize centrifugal force to separate components of a mixture of liquid and solid particles or liquid and liquid. The low-speed desk centrifuge adopts the brushless control of a whole computer, has low noise when operating the whole centrifuge, is convenient to operate, is safe and reliable, and can be widely applied to qualitative analysis of serum, plasma, urine and the like in experiments and scientific research works in the fields of biology, chemistry, medicine and pharmacology and the like.

Chinese patent with grant bulletin number CN204583502U discloses a desk-top low-speed centrifuge, including casing and the apron of lid on the casing, the casing in be equipped with motor and centrifugal chamber, be equipped with the pivot of being connected with the motor in the centrifugal chamber, the position that is located around the pivot in the centrifugal chamber is equipped with the centrifugal platform, the top swing joint of pivot has the rotor, the rotor is equipped with a plurality of detachable hanging flower baskets, be equipped with the centrifuging tube in the hanging flower basket, the perpendicular distance between rotor and centrifugal platform is greater than the length of centrifuging tube, be equipped with the detachable protective sheath in the centrifugal chamber, the protective sheath is including covering the last protective sheath on the centrifugal platform, cover the well protective sheath outside the pivot and cover the lower protective sheath bottom.

The above prior art solutions have the following drawbacks: when liquid is taken out, the centrifugal tube is taken out from the hanging basket and inserted into the test tube rack. And then the test tube rack is transported to a test place, the centrifuge tube is taken out, the bottle cap at the top of the centrifuge tube is unscrewed, and the supernatant in the centrifuge tube is taken out by using a rubber-tipped dropper for testing. No matter take out the centrifuge tube from the hanging flower basket, still at the in-process of transport test-tube rack, can cause rocking of centrifuge tube, lead to the inside upper clear liquid of centrifuge tube and lower floor turbid liquid to mix once more for contain part turbid thing in the upper clear liquid of taking out, influence the experimental result in later stage.

Disclosure of Invention

The utility model aims at providing a get liquid mechanism for desk-top centrifuge of low-speed can reduce the probability that upper clear liquid and the turbid liquid of lower floor mix when getting liquid, improves the cleanliness of the upper clear liquid of taking out to improve the experimental accuracy in later stage.

The above object of the present invention is achieved by the following technical solutions:

a liquid taking mechanism for a low-speed table type centrifuge comprises a bottle cap body, wherein a through jack is formed in the middle of the bottle cap body, and a fixed ring plate is arranged on the periphery of the jack; the fixed ring plate is vertically fixed on the outer wall of the bottle cap; a rubber head dropper is inserted in the fixed ring plate and is in sliding fit with the fixed ring plate; and a locking assembly for locking the position of the rubber head dropper on the fixed ring plate is additionally arranged between the rubber head dropper and the fixed ring plate.

Through adopting above-mentioned technical scheme, in the in-service use process, pour into the centrifuging tube with the liquid that needs the centrifugation earlier, according to centrifugal requirement, liquid level height does not exceed 2/3 of centrifuging tube height in the centrifuging tube. Then the bottle cap body is sleeved on the pipe orifice of the centrifugal pipe to seal the pipe orifice. And moving the rubber head dropper to enable a larger distance to be formed between one end of the rubber head dropper, which is positioned in the centrifugal tube, and the liquid level, and locking the position of the rubber head dropper by using the locking assembly. The centrifuge tubes were placed in a low speed bench top centrifuge for centrifugation. After the centrifugation is finished, the locking mechanism is unlocked for the rubber head dropper, the rubber head dropper is moved to enable the bottom end of the rubber head dropper to enter the supernatant of the centrifuge tube, liquid is taken from the supernatant, and then the rubber head dropper is moved upwards to enable the rubber head dropper to be far away from the liquid level in the centrifuge tube. The tube was then removed. According to the method, liquid extraction is carried out on the supernatant liquid immediately after centrifugation, the rubber-headed dropper after liquid extraction is moved upwards and away from the liquid level for a certain distance, the influence of the movement of the centrifugal tube in the later period on liquid extraction of the rubber-headed dropper is reduced, and the accuracy of later-period detection is improved.

The utility model discloses further set up to: the locking assembly comprises a sleeve sleeved outside the fixed ring plate, and the sleeve and the fixed ring plate are fixed through threads; a sealing plate is fixed at one end of the sleeve, which is far away from the fixed ring plate, a through hole is formed in the middle of the sealing plate, and the rubber head dropper penetrates through the through hole; and a rubber ring is fixed on the inner wall of the through hole and tightly propped against the outer wall of the rubber head dropper.

By adopting the technical scheme, in the actual installation process, the sleeve is firstly sleeved outside the rubber head dropper, and the rubber head on the rubber head dropper is installed. Because the centrifuging tube does the rotation of horizontal direction in low-speed desk-top centrifuge inside, and because the displacement of centrifuging tube in vertical direction of centrifugal force effect is restricted by the hanging flower basket. Meanwhile, the centrifugal force given to the rubber head dropper by the low-speed desk type centrifuge is small in component force along the axial direction of the rubber head dropper, and the component force is not enough to overcome the frictional resistance between the outer wall of the rubber head dropper and the rubber ring, so that the rubber head dropper cannot move along the axial direction of the fixed ring plate in the centrifugation process. And when the rubber head dropper needs to be moved, only the centrifugal tube needs to be pressed, force is applied to the outer wall of the rubber head dropper, and the rubber head dropper is lifted or pressed down, so that the operation is convenient and fast.

The utility model discloses further set up to: a limiting assembly is additionally arranged between the rubber head dropper and the fixed ring plate and comprises a sliding groove formed in the inner wall of the fixed ring plate; the sliding groove is formed in the axial direction of the fixing ring plate from one end, far away from the bottle cap body, of the fixing ring plate, a sliding block is fixed on the side wall of the rubber head dropper, and the sliding block is in sliding fit with the sliding groove; the inner wall of the fixed ring plate is also provided with a plurality of positioning ring grooves which are arranged along the axial direction of the fixed ring plate, and the positioning ring grooves are communicated with the sliding grooves; the sliding block is in sliding fit with the positioning ring groove.

By adopting the technical scheme, in the practical use process, before centrifugation, the rubber head dropper is moved to enable the sliding block to be located at the position of the positioning ring groove far away from the liquid level, and the rubber head dropper is rotated to enable the sliding block to move to the position of the positioning ring groove far away from the sliding groove, so that the axial movement of the rubber head dropper is limited, and the structural stability of the rubber head dropper in the centrifugation process is further improved.

The utility model discloses further set up to: the sliding block is arranged in a spherical shape.

Through adopting above-mentioned technical scheme, reduce the frictional force between the slider motion in-process and the spout to improve the smoothness nature of slider motion in the spout.

The utility model discloses further set up to: the cross section of the positioning ring groove is matched with the shape of the sliding block.

Through adopting above-mentioned technical scheme, reinforcing positioning ring groove is to the spacing effect of slider.

The utility model discloses further set up to: the sliding grooves are formed in the fixed ring plate at least twice, and the number of the sliding blocks is consistent with that of the sliding grooves.

By adopting the technical scheme, the structural stability and the stress uniformity in the movement process of the rubber head dropper are improved.

The utility model discloses further set up to: the sleeve is formed by splicing a first arc-shaped plate and a second arc-shaped plate, and a fixing assembly is arranged between the first arc-shaped plate and the second arc-shaped plate; the shrouding is including being fixed in the first plate body on the first arc and being fixed in the second plate body on the second arc, the rubber circle is including being fixed in the first adhesive tape on the first arc and being fixed in the second adhesive tape on the second arc.

Through adopting above-mentioned technical scheme, rubber ring on the sleeve can be because wearing and tearing or ageing and become invalid after long-term the use, and above-mentioned setting can be convenient for take off the sleeve from rubber head burette to the change of rubber strip is convenient for.

The utility model discloses further set up to: the fixing assembly comprises a groove formed in the end face of the first arc-shaped plate along the circumferential direction of the first arc-shaped plate and an inserting block fixed on the end face of the second arc-shaped plate along the circumferential direction of the second arc-shaped plate; the insertion block is provided with an insertion hole; the first arc-shaped plate is provided with corresponding holes, and the corresponding holes penetrate through the outer wall of the first arc-shaped plate; when the inserting block is inserted into the groove, the inserting holes are aligned with the corresponding holes; and a bolt penetrates through the corresponding hole, and the end part of the bolt is inserted into the plug hole and is in threaded fit with the plug hole.

Through adopting above-mentioned technical scheme, when the sleeve is dismantled to needs, unscrew the bolt for the bolt tip leaves the spliced eye, then with the inserted block follow the recess in take out can, convenient operation is swift, and joint strength is high.

To sum up, the utility model discloses a beneficial technological effect does:

1. the rubber head dropper in sliding connection is arranged on the bottle cap body, so that liquid taking of supernatant liquid can be realized without influencing the centrifugal effect, the clarity of the obtained liquid is improved, and the accuracy of later tests is improved;

2. set up spacing subassembly, further improve the structural stability of rubber head burette at the inside removal in-process of fixed ring board to can carry out axial spacing to the rubber head burette when the centrifugation.

Drawings

FIG. 1 is a schematic view of the whole structure of the liquid taking mechanism fixed on the top of the centrifuge tube.

Fig. 2 is a schematic view of the overall structure of the liquid taking mechanism.

Fig. 3 is a sectional view taken along line a-a of fig. 2.

Fig. 4 is a sectional view taken along line B-B of fig. 1.

In the figure, 1, a bottle cap body; 11. a jack; 12. a stationary ring plate; 121. a rubber head dropper; 2. a limiting component; 21. a chute; 22. a positioning ring groove; 23. a slider; 3. a locking assembly; 31. a sleeve; 311. a first arc-shaped plate; 312. a second arc-shaped plate; 32. closing the plate; 321. a first plate body; 322. a second plate body; 33. a rubber ring; 331. a first adhesive tape; 332. a second adhesive tape; 4. a fixing assembly; 41. a groove; 42. inserting a block; 43. a bolt; 5. inserting holes; 6. corresponding to the hole.

Detailed Description

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

Referring to fig. 1, for the utility model discloses a get liquid mechanism for desk-top centrifuge of low-speed, bottle lid body 1, set up in the jack 11 of bottle lid body 1 central point and the fixed ring board 12 of vertical fixation on bottle lid body 1.

The fixing ring plate 12 is fixed to the periphery of the insertion hole 11, and the inner wall of the fixing ring plate 12 is flush with the inner wall of the insertion hole 11. A rubber dropper 121 is inserted into the fixed ring plate 12, and the rubber dropper 121 is slidably fitted along the fixed ring plate 12.

With reference to fig. 1 and 2, a limiting assembly 2 is additionally arranged between the rubber head dropper 121 and the fixed ring plate 12, and the limiting assembly 2 includes a sliding groove 21, a positioning ring groove 22 and a sliding block 23. Spout 21 is seted up on the inner wall of fixed ring board 12 along the axial of fixed ring board 12 from the one end that fixed ring board 12 kept away from bottle lid body 1, and spout 21 is provided with at least twice on fixed ring board 12, and this embodiment explains in order to set up twice spout 21. The cross section of the sliding groove 21 is rectangular, and the sliding block 23 is spherical. The sliding block 23 is embedded in the sliding groove 21, and the sliding block 23 is in sliding fit along the sliding groove 21.

Referring to fig. 2 and 3, the positioning ring groove 22 is formed in a plurality of circumferential directions along the inner wall of the fixed ring plate 12, and the embodiment is described by taking two positioning ring grooves 22 as an example. Two positioning ring grooves 22 are arranged along the axial direction of the fixed ring plate 12 at intervals, and each positioning ring groove 22 is communicated with two sliding grooves 21. And the section of the positioning ring groove 22 is matched with the section of the sliding block 23, when the rubber head dropper 121 is moved to enable the sliding block 23 to move to a position communicated with the positioning ring groove 22 along the sliding groove 21, the rubber head dropper 121 is rotated to enable the sliding block 23 to move into the positioning ring groove 22, and therefore the movement of the rubber head dropper 121 in the axial direction is limited.

With reference to fig. 1 and 4, a locking assembly 3 for locking the position of the rubber dropper 121 on the fixed ring plate 12 is additionally arranged between the rubber dropper 121 and the fixed ring plate 12.

The locking assembly 3 comprises a sleeve 31, a closure plate 32 and a rubber ring 33. The sleeve 31 is sleeved outside the fixed ring plate 12, and the sleeve 31 and the fixed ring plate 12 are fixed in a threaded manner. The closing plate 32 is fixed at one end of the sleeve 31 far away from the fixed ring plate 12, and a through hole is formed in the middle of the closing plate 32. The rubber ring 33 is fixed on the inner wall of the through hole, and the rubber dropper 121 penetrates through the rubber ring 33 and abuts against the rubber ring 33. An operator can apply force to the dropper 121 to overcome the friction between the outer wall of the dropper 121 and the rubber ring 33, so that the dropper 121 can move axially along the sleeve 31.

The sleeve 31 is formed by splicing a first arc-shaped plate 311 and a second arc-shaped plate 312, and the first arc-shaped plate 311 and the second arc-shaped plate 312 are semi-circular rings with the same shape. The sealing plate 32 includes a first plate 321 fixed on the first arc-shaped plate 311 and a second plate 322 fixed on the second arc-shaped plate 312, and the rubber ring 33 includes a first adhesive strip 331 fixed on the first arc-shaped plate 311 and a second adhesive strip 332 fixed on the second arc-shaped plate 312.

A fixing component 4 is arranged between the first arc-shaped plate 311 and the second arc-shaped plate 312, and the fixing components 4 are respectively arranged at two ends of the first arc-shaped plate 311. The fixing component 4 comprises a groove 41 arranged on the end surface of the first arc-shaped plate 311 along the circumferential direction thereof and an inserting block 42 fixed on the end surface of the second arc-shaped plate 312 along the circumferential direction thereof, wherein the inserting block 42 is in inserting fit with the groove 41. The inserting block 42 is provided with an inserting hole 5, the first arc-shaped plate 311 is provided with a corresponding hole 6, and the corresponding hole 6 penetrates through the outer wall of the first arc-shaped plate 311. When the insert 42 is inserted inside the recess 41, the insertion hole 5 is aligned with the corresponding hole 6. A bolt 43 penetrates through the corresponding hole 6, and the end part of the bolt 43 is inserted into the plug hole 5 and is in threaded fit with the plug hole 5.

The implementation principle of the embodiment is as follows: pouring liquid to be centrifuged into a centrifuge tube, wherein the liquid level in the centrifuge tube does not exceed 2/3 of the height of the centrifuge tube according to the centrifugation requirement. Then cup joint bottle lid body 1 in the mouth of pipe of centrifuging tube to rotate bottle lid body 1 and make the opening position of bottle lid body 1 and centrifuging tube fixed. The end of the head dropper 121 is inserted into the inside of the fixed ring plate 12 so that the slider 23 is inserted into the slide groove 21. The dropper 121 is moved downward so that the slider 23 is positioned at the position of the positioning ring groove 22, and the dropper 121 is rotated so that the slider 23 is inserted into the positioning ring groove 22 at a position away from the slide groove 21. At this time, a large distance is left between the bottom of the rubber-tipped dropper 121 and the liquid level.

The first arc-shaped plate 311 and the second arc-shaped plate 312 are sleeved outside the rubber head dropper 121, and the fixing component 4 is used for locking the positions of the first arc-shaped plate 311 and the second arc-shaped plate 312, so that the rubber ring 33 is tightly abutted against the outer wall of the rubber head dropper 121. The sleeve 31 is moved to be close to the fixed ring plate 12, the rubber dropper 121 is held and the sleeve 31 is rotated to screw-fix the sleeve 31 and the fixed ring plate 12.

The centrifuge tube was inserted into a low speed bench top centrifuge for centrifugation. After the centrifugation is completed, the centrifuge tube is pressed to limit the movement. Force is applied to the outer wall of the rubber head dropper 121 to rotate the rubber head dropper 121 until the rubber head dropper 121 can move along the axial direction. The rubber head of the rubber head dropper 121 is squeezed to squeeze out air in the rubber head dropper 121, the rubber head dropper 121 is pushed to move downwards, the end portion of the rubber head dropper 121 enters a position below the liquid level, and the rubber head is loosened to enable part of supernatant to enter the rubber head dropper 121. And then the rubber head dropper 121 is lifted up to be away from the liquid level, so that the probability of contact between the liquid level and the rubber head dropper 121 in the later-stage centrifugal tube transportation process is reduced.

When the basket is added into the centrifugal process and is in a hollow or transparent structure in the low-speed table type centrifugal machine, the supernatant liquor can be directly taken out of the low-speed table type centrifugal machine. If the basket is a circumferentially closed shell made of opaque material, the bottom of the chute 21 can be directly set to a height that enables the bottom of the rubber-tipped dropper 121 to extend into the upper clear liquid, so that the upper clear liquid can be extracted without observing the bottom motion state of the rubber-tipped dropper 121.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (8)

1. The utility model provides a get liquid mechanism for desk-top centrifuge of low-speed, includes bottle lid body (1), its characterized in that: the middle part of the bottle cap body (1) is provided with a through insertion hole (11), and a fixed ring plate (12) is arranged on the periphery of the insertion hole (11); the fixed ring plate (12) is vertically fixed on the outer wall of the bottle cap; a rubber head dropper (121) is inserted in the fixed ring plate (12), and the rubber head dropper (121) is in sliding fit with the fixed ring plate (12); and a locking assembly (3) for locking the position of the rubber head dropper (121) on the fixed ring plate (12) is additionally arranged between the rubber head dropper (121) and the fixed ring plate (12).

2. A liquid extraction mechanism for a low speed table centrifuge as defined in claim 1, wherein: the locking assembly (3) comprises a sleeve (31) sleeved outside the fixed ring plate (12), and the sleeve (31) and the fixed ring plate (12) are fixed through threads; a sealing plate (32) is fixed at one end of the sleeve (31) far away from the fixed ring plate (12), a through hole is formed in the middle of the sealing plate (32), and the rubber head dropper (121) penetrates through the through hole; a rubber ring (33) is fixed on the inner wall of the through hole, and the rubber ring (33) abuts against the outer wall of the rubber head dropper (121).

3. A liquid take-off mechanism for a low-speed table centrifuge according to claim 1 or 2, wherein: a limiting assembly (2) is additionally arranged between the rubber head dropper (121) and the fixed ring plate (12), and the limiting assembly (2) comprises a sliding groove (21) arranged on the inner wall of the fixed ring plate (12); the sliding groove (21) is formed in the axial direction of the fixed ring plate (12) from one end, far away from the bottle cap body (1), of the fixed ring plate (12), a sliding block (23) is fixed on the side wall of the rubber head dropper (121), and the sliding block (23) is in sliding fit with the sliding groove (21); the inner wall of the fixed ring plate (12) is also provided with a plurality of positioning ring grooves (22) which are axially arranged along the fixed ring plate (12), and the positioning ring grooves (22) are communicated with the sliding grooves (21); the sliding block (23) is in sliding fit with the positioning ring groove (22).

4. A liquid extraction mechanism for a low speed table centrifuge as defined in claim 3, wherein: the sliding blocks (23) are arranged in a spherical shape.

5. The liquid extraction mechanism for a low speed table centrifuge of claim 4, wherein: the cross section of the positioning ring groove (22) is matched with the shape of the sliding block (23).

6. A liquid extraction mechanism for a low speed table centrifuge as defined in claim 3, wherein: the sliding grooves (21) are arranged on the fixed ring plate (12) at least twice, and the number of the sliding blocks (23) is consistent with that of the sliding grooves (21).

7. A liquid extraction mechanism for a low speed table centrifuge as defined in claim 2, wherein: the sleeve (31) is formed by splicing a first arc-shaped plate (311) and a second arc-shaped plate (312), and a fixing component (4) is arranged between the first arc-shaped plate (311) and the second arc-shaped plate (312); the sealing plate (32) comprises a first plate body (321) fixed on the first arc-shaped plate (311) and a second plate body (322) fixed on the second arc-shaped plate (312), and the rubber ring (33) comprises a first rubber strip (331) fixed on the first arc-shaped plate (311) and a second rubber strip (332) fixed on the second arc-shaped plate (312).

8. A liquid extraction mechanism for a low speed table centrifuge as defined in claim 7, wherein: the fixing component (4) comprises a groove (41) formed in the end surface of the first arc-shaped plate (311) along the circumferential direction of the first arc-shaped plate and an inserting block (42) fixed on the end surface of the second arc-shaped plate (312) along the circumferential direction of the second arc-shaped plate; the inserting block (42) is provided with an inserting hole (5); a corresponding hole (6) is formed in the first arc-shaped plate (311), and the corresponding hole (6) penetrates through the outer wall of the first arc-shaped plate (311); when the inserting block (42) is inserted into the groove (41), the inserting holes (5) are aligned with the corresponding holes (6); a bolt (43) penetrates through the corresponding hole (6), and the end part of the bolt (43) is inserted into the plug hole (5) and is in threaded fit with the plug hole (5).

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