Dropper bottle

Abstract

The utility model discloses a dropper bottle which comprises a bottle body and a bottle cap buckled on the bottle body in a screwed mode. A partition plate is horizontally arranged in the bottle cap and divides an inner cavity of the bottle cap into an operation cavity and a connecting cavity, and the center of the partition plate is rotationally connected with a suction pipe vertically extending into the bottle body downwards through a first bearing. Spiral stirring blades are arranged on the outer wall of the suction pipe from top to bottom, a piston rod with a piston head is arranged in the suction pipe, the upper end of the piston rod is connected with a pressing cap penetrating out of the top wall of the bottle cap, a baffle clamped in the operation cavity and sliding up and down is arranged at the bottom of the pressing cap, and a spring for supporting the pressing cap is arranged in the operation cavity between the baffle and the partition plate; a spiral slide way is arranged on the inner wall of the suction pipe above the piston head, and a roller rolling along the spiral slide way is hinged to the piston rod through a horizontally-arranged mandrel. The utility model has the advantages that the liquid suction and stirring are synchronously carried out, and the suction and sample suction operation of suspension products easy to precipitate is simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of experimental equipment, in particular to a dropper bottle capable of simultaneously sucking and mixing. Background Art

[0002] In related experiments such as pharmaceuticals, chemical products, and biological products, there are often products stored in liquid media in solid form, namely suspension products (such as cell suspensions, etc.). During long-term storage of such products, the particles in the medium will gradually settle at the bottom of the container under the action of gravity. During subsequent use, it is necessary to mix them by means of inverting and shaking or manually stirring after opening the lid, etc., and only after mixing can tools such as pipettes be used for extraction. The method of inverting and shaking is severely affected by humans, and it is difficult to ensure the consistency of each shake, resulting in insufficient uniformity of the mixing effect standard; while the operation of opening the lid and stirring is relatively complex, with low mixing efficiency, and after mixing, it is necessary to use tools such as pipettes for suction additionally, which is not only inconvenient to operate but also increases the use of consumables. Summary of the Invention

[0003] The purpose of the utility model is to provide a dropper bottle aiming at the defects of the prior art, which can mix and stir while sucking the sample liquid.

[0004] To achieve the above purpose, the utility model can adopt the following technical solutions:

[0005] The dropper bottle of the utility model includes a bottle body and a bottle cap screwed and fastened thereon; a partition is horizontally arranged inside the bottle cap, and the inner cavity of the bottle cap is divided into an upper operation cavity and a lower connection cavity by the partition. The center of the partition is rotatably connected through a first bearing with a straw vertically extending downward into the bottle body; spiral stirring blades are arranged on the outer wall of the straw from top to bottom, and a piston rod with a piston head is arranged inside the straw; the upper end of the piston rod is connected with a pressing cap passing through the top wall of the bottle cap, and a baffle for sliding up and down in the operation cavity is arranged at the bottom of the pressing cap. A spring for propping up the pressing cap is arranged in the operation cavity between the baffle and the partition; a spiral slideway is opened on the inner wall of the straw above the piston head, and a roller rolling along the spiral slideway is hinged on the piston rod through a horizontally arranged core shaft.

[0006] Further, the piston head is rotatably connected with the piston rod through a second bearing, which can ensure that the piston rod can push the piston head to move up and down while not affecting the self-rotation of the piston head.

[0007] Further, the wheel surface of the roller is a rough surface, so as to increase the friction force when the roller contacts the spiral slideway.

[0008] The advantages of the present utility model are as follows: by pressing and automatically rebounding the pressing cap, the piston rod and the piston head are driven to reciprocate in the straw, thereby realizing the liquid suction function of the straw. At the same time of liquid suction, the automatic rotation of the straw can be realized by the cooperation of the roller and the spiral chute, so that the spiral stirring blades arranged on the outer wall of the straw rotate, completing the mixing and stirring of the sample liquid in the bottle body, realizing the synchronous progress of liquid suction and stirring, and simplifying the pumping and sampling operation of easily precipitated suspension products. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 is a schematic structural diagram of the present utility model.

[0010] Figure 2 is Figure 1 an enlarged view of part A in

[0011] Figure 3 is Figure 1 an enlarged view of part B in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0012] Hereinafter, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0013] As Figures 1-3 shown, the dropper bottle of the present utility model includes a bottle body 1 and a bottle cap 2 screwed and fastened to the top bottle mouth of the bottle body 1.

[0014] A partition 3 is horizontally arranged in the bottle cap 2. The partition 3 divides the inner cavity of the bottle cap 2 into an upper operation cavity 4 and a lower connection cavity 5. Among them, the operation cavity 4 is a closed cavity, and the connection cavity 5 is a cavity with a lower opening. An internal thread adapted to be screwed to the bottle mouth of the bottle body 1 is provided on the side wall of the connection cavity 5.

[0015] A first bearing 6 is coaxially arranged at the center of the partition 3. The outer ring of the first bearing 6 is fixedly attached to the partition, and a straw 7 is inserted through the inner ring thereof. The straw 7 can be rotatably connected to the partition 3 through the first bearing 6. In addition, the straw 7 should extend vertically downward into the bottle body 1, and its lower end is a tapered end with a larger upper part and a smaller lower part for sucking the sample liquid in the bottle body 1.

[0016] A spiral stirring blade 8 is provided on the outer wall of the straw 7 from top to bottom, and a piston rod 9 is coaxially penetrated in the straw 7. The lower end of the piston rod 9 has a piston head 10 that fits the inner wall of the straw 7. The piston head 10 is a rubber head or a silicone head. The piston head 10 is rotatably connected to the piston rod 9 through a second bearing 17 arranged coaxially, ensuring that the piston rod 9 can push the piston head 10 up and down while not affecting the rotation of the piston head 10; the upper end of the piston rod 9 passes through the outside of the straw 7 and is connected to a pressing cap 11 that passes through the top wall of the bottle cap 2. The bottom of the pressing cap 11 has a baffle 12 that is blocked in the operating chamber 4 and can slide up and down along the height direction of the operating chamber 4. A spring 13 that supports the pressing cap 11 is also provided in the operating chamber 4 between the baffle 12 and the partition 3. The spring 13 is coaxially sleeved on the outside of the piston rod 9 for automatically pushing the pressing cap 11 that is manually pressed down to the bottom back to its original position.

[0017] In addition, a spiral slide 14 is provided on the inner wall of the straw 7. The spiral slide 14 should be located above the uppermost limit of the upward sliding position of the piston head 10 so as not to affect the normal suction effect of the piston head 10. At the same time, a core shaft 15 is horizontally provided on the rod wall of the piston rod 9, and a roller 16 that rolls along the spiral slide 14 is hinged on the core shaft 15. The wheel surface of the roller 16 is a rough surface, which can increase the friction when the roller 16 contacts the spiral slide 14.

[0018] When in use, the bottle cap 2 is screwed and fastened on the bottle mouth of the bottle body 1, so that the straw 7 is extended into the bottle body 1, and the lower end of the straw 7 is just located near the bottom of the inner cavity of the bottle body 1; then the pressing cap 11 is pressed down to the bottom, so that the piston rod 9 pushes the piston head 10 to move downward in the straw 7 to the lowest limit; thereafter, the pressing cap 11 is released, and the pressing cap 11 is pushed upward under the automatic rebound action of the spring 13, so that the piston rod 9 pulls the piston head 10 to move upward in the straw 7 to the highest limit again, thereby utilizing the reciprocating movement of the piston head 10 in the straw 7 to achieve the suction of the sample liquid in the bottle body 1.

[0019] When the pressing cap 11 is pressed downward to make the piston rod 9 push the piston head 10 to move downward, or when the pressing cap 11 rebounds upward to make the piston rod 9 drive the piston head 10 to move upward, the roller 16 connected to the piston rod 9 will move vertically downward or vertically upward. At this time, the roller 16 will toggle the spiral slide 14, thereby causing the pipette 7 to rotate, thereby realizing the rotation of the spiral stirring blade 8 to stir the sample liquid in the bottle body 1; when the pipette 7 rotates, since the piston head 10 is in close contact with the inner wall of the pipette 7, the piston head 10 will rotate together with the pipette 7. At the same time, since the piston head 10 and the piston rod 9 are connected by the second bearing 17, the synchronous rotation of the piston head 10 with the pipette 7 will not affect the piston rod 9, thereby avoiding jamming.

[0020] The liquid suction function of the straw 7 is realized by pressing and automatic rebound of the pressing cap 11. At the same time, the cooperation between the roller 16 and the spiral slideway 14 can be used to realize the automatic rotation of the straw 7 and the spiral stirring blades 8 on its outer wall, so as to complete the mixing and stirring of the sample liquid in the bottle body 1, realize the synchronous progress of liquid suction and stirring, simplify the sampling operation of the easily precipitated suspension products, and improve the suction efficiency.

[0021] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0022] In the present invention, unless otherwise clearly specified and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or integrated; it can be directly connected or indirectly connected through an intermediate medium, and can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0023] In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features.

Claims

1. A dropper bottle, comprising a bottle body and a bottle cap screwed and fastened thereon; characterized in that: A partition is horizontally arranged inside the bottle cap. The partition divides the inner cavity of the bottle cap into an upper operation cavity and a lower connection cavity. A straw vertically extending downward into the bottle body is rotatably connected to the center of the partition through a first bearing. Spiral stirring blades are arranged on the outer wall of the straw from top to bottom. A piston rod with a piston head is arranged inside the straw. The upper end of the piston rod is connected to a pressing cap passing through the top wall of the bottle cap. A baffle that is blocked and slides up and down inside the operation cavity is provided at the bottom of the pressing cap. A spring that supports the pressing cap is arranged in the operation cavity between the baffle and the partition. A spiral slideway is provided on the inner wall of the straw above the piston head. A roller that rolls along the spiral slideway is hinged to the piston rod through a horizontally arranged core shaft.

2. The dropper bottle according to claim 1, characterized in that: The piston head is rotatably connected to the piston rod through a second bearing.

3. The dropper bottle according to claim 1, characterized in that: The rolling surface of the roller is a rough surface.

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