Precise pressing liquid taking device of liquid taking bottle

Abstract

The utility model provides a kind of precision pressing liquid taking device, and the defect that traditional pressing bottle handles high viscosity liquid is easily blocked, quantitative inaccuracy is improved, and liquid one-way suction is realized by hollow pipe body and valve bead one-way valve and filter screen in containing liquid taking pipe assembly;Pressing execution component is built-in filter screen and pressing column with limiting necking, and the end is provided with fine liquid outlet hole array, and three-stage filtration system is formed to prevent crystallization blockage.The device solves the deficiency in the prior art, has the characteristics of high precision, high stability and high efficiency filtration, and is suitable for the precise quantitative liquid taking needs of various liquids.

Description

Technical Field

[0001] This utility model relates to a precision press-to-dispense liquid device, and more particularly to a precision press-to-dispense liquid device applied to press-type dispensing bottles. Background Technology

[0002] Press-type dispensing bottles are generally used to dispense medical alcohol or rosin alcohol, hence they are also called press-type alcohol bottles or simply alcohol bottles. They are commonly used in laboratories, medical and health care, and electrical appliance industries.

[0003] Currently, the common design of the bottle head for press-type dispensing bottles, such as the utility model patent with authorization announcement number CN2679068Y, requires a large pressing force and often causes jamming due to uneven pressing force.

[0004] Market demands sometimes require the use of liquids with higher viscosity, such as composite solutions. These composite solutions not only have higher viscosity, but also require greater pressure when squeezed out. They are also prone to crystal formation or the release of impurities, which makes existing press-type bottle products more prone to jamming and clogging in actual use. Furthermore, the accumulation of crystallized impurities on the dispensing platform also affects the performance.

[0005] In addition, the dispensing volume of existing products is often related to the viscosity of the liquid and the force and speed of pressing. For liquids with high viscosity, existing products are difficult to dispense accurately. Summary of the Invention

[0006] The purpose of this invention is to solve the shortcomings of traditional press-type liquid dispensing bottles, which are difficult to use for high-viscosity liquids, are prone to clogging, and are difficult to dispense in a quantitative manner.

[0007] To achieve the above technical objectives, this utility model provides a precision press-type liquid dispensing device for a press-type liquid dispensing bottle, aiming to solve the problems of complex structure and easy jamming, insufficient quantitative accuracy, unstable liquid flow control, and poor filtration performance in existing liquid dispensing devices. By optimizing the structural design of the liquid dispensing tube assembly, the press-actuating assembly, the reset mechanism, and the quantitative liquid dispensing platform, this invention achieves high-precision quantitative liquid dispensing, stable flow control, and efficient filtration and aeration functions.

[0008] The technical solution adopted in this utility model is as follows:

[0009] A precision pressing liquid dispensing device for a liquid dispensing bottle, the liquid dispensing bottle comprising a bottle body, a bottle head, a bottle head cap, and an outer bottle cap, wherein the bottle head is located above the bottle body, the bottle head cap covers the bottle head, and the two are fixed together by means of snaps, threads, etc., and the outer bottle cap covers the bottle head cap. The front bottle head cap has an axial through hole. This utility model adopts the following new technical solution:

[0010] 1. Structural design of the precision press-to-dispense liquid device

[0011] The precision press-to-dispense liquid device of the present invention includes a liquid dispensing tube assembly, a press-to-actuate assembly, a reset mechanism, a quantitative dispensing platform, and an axial fixing mechanism.

[0012] Liquid dispensing tube assembly: It has an axial through hole installed in the bottle cap, including a hollow tube body forming a liquid dispensing chamber; a closed base is located at the lower end of the tube body and has a liquid dispensing hole in the middle; the liquid dispensing tube valve ball above the liquid dispensing hole acts as a first one-way valve to ensure that liquid enters the liquid dispensing chamber from the liquid dispensing hole.

[0013] Pressing actuator: It is coaxially sleeved in the liquid dispensing chamber, and its upper part passes through the aforementioned axial through hole and extends out of the bottle cap. It includes a hollow pressing column, an internal pressing column cavity, a limiting neck formed at the end of the pressing column cavity, and a pressing column valve bead set above to form a second one-way valve, so as to realize the upward one-way flow control of liquid.

[0014] Reset mechanism: An elastic body connects the lower end of the pressing column to the sealed base of the liquid dispensing tube, ensuring that the pressing column can axially reset after being pressed. A reset spring is optimally used.

[0015] Quantitative dispensing platform: It is horizontally positioned at the top of the pressing column, and the platform surface is equipped with an array of dispensing holes that communicate with the pressing column cavity to realize the overflow and use of liquid.

[0016] Axial fixing mechanism: The pressing column, bottle cap, and dispensing tube are fixedly connected by means of slots, fastening bolts, or welding to ensure the stability of the device. Fastening bolts are preferred, as they allow for easy disassembly and cleaning of each component.

[0017] 2. Liquid flow control and filtration design

[0018] Liquid collection filter: Located at the end of the liquid collection tube, with a pore size of 0.2-0.5mm, it is used for preliminary filtration of crystals and impurities in the liquid in the bottle to prevent clogging.

[0019] Column-end filter screen: Located at the bottom of the pressing column, with a pore size of 0.2-0.5mm, it is used to filter the liquid in the liquid extraction chamber again to ensure the purity of the discharged liquid.

[0020] Liquid outlet array: Composed of multiple liquid outlet holes with a diameter ≤0.2mm, it further filters the liquid in the pressing column cavity, purifies the discharged liquid, and prevents the liquid remaining in the quantitative liquid dispensing stage from crystallizing due to evaporation or impurities attached by air pollution from flowing back into the pressing column cavity, causing indirect pollution.

[0021] A non-porous isolation zone is provided in the central area of ​​the pressing column cavity to prevent the liquid in the pressing column cavity from overflowing directly from the middle when it rises, which can ensure the uniform distribution and quantitative discharge of the liquid.

[0022] 3. Quantitative liquid dispensing function

[0023] An upper limit stop is located above the valve ball in the pressing column chamber, forming a metering chamber. When the pressing column chamber descends, the liquid inside drives the valve ball upward, locking the upper limit stop and stopping the liquid output, thus achieving precise metered liquid dispensing.

[0024] The formula for calculating the amount of liquid taken is: Volume of the quantitative chamber - Volume of the valve bead on the pressing column.

[0025] It can be seen that the liquid dispensing quantity can be adjusted by adjusting the distance between the limit neck and the upper limit neck and the size of the valve bead.

[0026] Therefore, the lower limiting neck can be modified into a detachable structure, and the liquid dispensing quantity can be adjusted by changing the distance between the limiting neck and the upper limiting neck.

[0027] The difference in inner diameter between the limit neck and the upper limit neck is 10-30% of the valve ball diameter, ensuring stable movement of the valve ball and preventing liquid backflow.

[0028] 4. Ventilation design

[0029] Vent hole in liquid collection tube: Located on the upper wall of the liquid collection tube to ensure pressure balance between the liquid collection chamber and the liquid collection process, and to avoid unstable liquid flow due to changes in air pressure.

[0030] Through the above technical solutions, this utility model achieves the following technical effects:

[0031] 1. High-purity filtration: The dual filtration design of the liquid intake filter and the column end filter effectively removes impurities from the liquid, ensuring the purity of the discharged liquid.

[0032] The purified liquid has high fluidity, reducing jamming and malfunctions in the pressing mechanism, and achieving uniform distribution and precise quantitative discharge of the liquid.

[0033] 2. Stable flow control: The cooperation of the first and second check valves ensures unidirectional flow of liquid, avoiding backflow and leakage.

[0034] 3. Controllable quantitative liquid dispensing: By adjusting the space between the limiting neck and the upper limit neck, a quantitative liquid dispensing effect is achieved.

[0035] 4. Pressure balance and ventilation function: The design of the vent hole in the liquid dispensing tube ensures pressure balance inside the bottle during liquid dispensing, improving the stability and reliability of the device.

[0036] In summary, the precision press-to-dispense liquid device of the present invention, through structural optimization and functional design, overcomes the shortcomings of the prior art and features high precision, high stability and efficient filtration, making it suitable for the precise quantitative dispensing needs of various liquids. Attached Figure Description

[0037] Figure 1 This is an exploded view of the structure of the first embodiment of this utility model;

[0038] Figure 2 yes Figure 1 Schematic diagram of the embodiment combination;

[0039] Figure 3 yes Figure 1 A schematic diagram of the liquid dispensing platform in the embodiment;

[0040] Figures 4-6 yes Figure 1 Schematic diagram of structural changes and liquid movement after pressing down the liquid collection platform (2) in the embodiment;

[0041] Figure 7 This is a schematic diagram of the replaceable limit necking module structure;

[0042] In the diagram: 1: Bottle body; 101: Bottle head; 102: Bottle head cap; 103: Outer bottle cap;

[0043] 2: Liquid dispensing platform; 3: Liquid outlet; 4: Fastening bolts;

[0044] 5: Liquid collection tube; 501: Liquid collection chamber; 502: Liquid collection filter screen; 503: Liquid collection tube valve ball;

[0045] 504: Spring; 505: Liquid intake hole; 506: Vent hole for liquid intake tube;

[0046] 6: Press column; 601: Press column cavity; 602: Press column valve ball; 603: Column end filter screen; 604: Upper limit neck. Detailed Implementation

[0047] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0048] This embodiment uses a chemical reagent dispensing bottle as an example, but the technical solution of this utility model is also applicable to other liquids, especially viscous liquids or easily crystallizing solutions, for precision dispensing scenarios.

[0049] The following is combined Figure 1 , Figure 2 and Figure 3 This describes the component assembly and structural relationship of the first embodiment of this utility model patent:

[0050] 1. Installation of liquid collection tube assembly

[0051] The liquid collection tube (5) is made of medical-grade stainless steel and passes through the axial through hole of the bottle cap (102). It has an outer diameter of 10 mm and an inner diameter of 8.5 mm. A liquid collection filter screen (502) with a diameter of 0.4 mm is welded to its tail end. The bottom closed base has a liquid collection hole (505) with a diameter of 2.5 mm. The liquid collection tube valve bead (503) (medical-grade stainless steel ball with a diameter of 3 mm) is placed above the liquid collection hole (505) to form the first one-way valve. A liquid collection tube vent hole (506) (with a diameter of 3 mm) is opened on the upper end of the liquid collection tube (5) to ensure that the liquid collection chamber (501) is balanced with the air pressure inside the bottle.

[0052] 2. Press to assemble the actuator.

[0053] The pressing column (6) is made of medical-grade stainless steel, with an outer diameter of 8mm and an inner diameter of 6mm, and is coaxially fitted into the liquid collection chamber (501). A column-end filter screen (603) with a 0.3mm aperture is embedded at its bottom, and a limiting neck with an inner diameter of 2mm is machined at the end of the pressing column chamber (601). The pressing column valve ball (602) (a 3mm diameter medical-grade stainless steel ball) is placed on the neck, forming a second one-way valve. A return spring (504) (a 0.2mm wire diameter, 6mm coil diameter stainless steel spring) connects the bottom of the pressing column to the liquid collection tube sealing base.

[0054] 3. Axial fixing structure

[0055] The bolt cap of the fastening bolt (4) is hexagonal, which makes it easy to tighten; the outer diameter of the bolt is 9mm, the external thread depth is 0.5mm, and the top of the liquid extraction chamber (501) has an internal thread of the same depth; the inner diameter of the bolt is 7mm, and the top of the pressing column (6) has a neck groove with a diameter of 7mm.

[0056] The fastening bolt (4) passes through the axial through hole of the bottle cap (102), abuts against the neck groove of the pressing column (6), and is rotated together with the liquid extraction chamber (501) to achieve axial fixation.

[0057] The length of the groove area of ​​the neck of the pressing post (6) is greater than that of the fastening bolt (4), so the pressing post (6) can move within a limited range.

[0058] 4. Specifications of the quantitative liquid dispensing station

[0059] The quantitative liquid dispensing platform (2) is fixed to the top of the pressing column (6) by welding. Its platform surface has an outer diameter of 30 mm and is recessed inward by 6 mm. The concave area is provided with an array of liquid outlet holes (3) in a circular area with a diameter of 16 mm. The holes are 0.15 mm in diameter and are evenly arranged in concentric circles. The center retains a non-porous isolation zone with a diameter of 8 mm, which is formed by laser drilling.

[0060] The dimensions of the above components can be adjusted according to the size of the liquid dispensing bottle and should not be considered as limitations.

[0061] The following is combined Figure 2 , Figure 4 , Figure 5 and Figure 6 The following describes the workflow and quantitative control of the first embodiment of this utility model patent:

[0062] 1. Initial state ( Figure 2 (As shown)

[0063] The return spring (504) keeps the pressing post (6) at its upper limit position, at which point:

[0064] The valve bead (503) of the liquid extraction tube closes the liquid extraction hole (505) due to gravity.

[0065] When the valve ball (602) is pressed down to the lower limit neck, the second check valve closes.

[0066] As can be seen, the liquid is divided into three isolated zones to ensure that the filtered liquid is not mixed with the liquid from the preceding stage.

[0067] 2. Downward pressure phase ( Figures 4-5 )

[0068] Apply vertical pressure to the liquid dispensing platform (2), and press the column (6) down to compress the return spring (504):

[0069] The liquid extraction valve bead (503) is lifted by hydraulic pressure, and the liquid enters the liquid extraction chamber (501) through the liquid extraction hole (505).

[0070] The liquid flow in the liquid collection chamber (501) continues to rise, and the liquid overflows through the array of liquid outlet holes (3) onto the concave surface of the liquid collection platform, overflowing evenly. The central non-porous isolation zone prevents the liquid column from being concentrated and sprayed.

[0071] Pressing the valve ball (602) causes it to rise with the liquid flow until it contacts the upper limit constriction (604), at which point the second check valve closes.

[0072] Quantitative chamber formation: Assuming a distance of 10mm between the two limiting necks, the actual dispensing volume (approximately 0.283mL) minus the valve bead volume (0.014mL) is approximately 0.27mL.

[0073] Continue pressing down to the tail section. When the rising liquid flow disappears, press the valve ball (602) and under the action of gravity, it will disengage from the upper limit neck (604) and fall back to the lower limit neck, preventing liquid backflow.

[0074] 3. Decompression and rebound stage ( Figure 6 )

[0075] After the external force is removed, the return spring (504) pushes the pressing column (6) upward, creating a suction effect:

[0076] The liquid inside the bottle pushes up the valve bead (503) of the liquid dispensing tube through the dispensing hole (505) and enters the dispensing chamber (501).

[0077] At the end of the rebound, the liquid pipe valve ball (503) falls back to the liquid intake hole (505), closing the first one-way valve and returning to the initial state.

[0078] Key parameter adjustment

[0079] 1. By replacing the press column (6) of different specifications, the liquid output can be precisely adjusted.

[0080] 2. For example Figure 7 As shown, by designing the lower limiting neck module as a detachable threaded connection structure, various specifications of liquid output can be provided by replacing the limiting neck module.

[0081] Product maintenance and cleaning

[0082] 1. Rotate the fastening bolt (4) counterclockwise until it is completely loosened, and the pressing column (6) and the liquid collection tube (5) can be separated.

[0083] 2. Remove the return spring (504) and the pressing valve ball (602) for separate cleaning.

[0084] 3. Use a special cleaning needle to clean the liquid outlet (3) and the filter screen.

[0085] 4. After reassembly, three pneumatic compression operations are required to restore the seal.

[0086] Other further technological expansions

[0087] 1. To ensure airtightness, a silicone gasket can be installed under the bottle cap (102) to assist in sealing.

[0088] 2. For liquids with low viscosity, ceramic beads can be used as valve bead material.

[0089] 3. The materials for the liquid collection tube and the pressing column can be corrosion-resistant and have good processing performance, such as engineering plastics.

[0090] 4. For highly corrosive liquids, titanium alloys can be used as the product material.

[0091] The above embodiments demonstrate the innovations of this utility model in terms of structural design, quantitative control, and maintainability. Through modular components and precise dimensional matching, stable quantitative dispensing of high-viscosity liquids is achieved, solving the problems of jamming and clogging in traditional devices.

[0092] The above description is merely a preferred embodiment of this utility model. In actual deployment, due to different production process requirements, it is not possible to operate entirely according to the above embodiments. Therefore, the embodiments of this utility model should not be construed as limitations on the present invention. It should be noted that for those skilled in the art, several improvements and adjustments can be made without departing from the technical principles of this utility model, and these improvements and adjustments should also be considered within the effective protection scope of this invention.

Claims

1. A precision pressing liquid dispensing device for a liquid dispensing bottle, the liquid dispensing bottle comprising a bottle body, a bottle head, a bottle head cap, and an outer bottle cap, wherein the bottle head cap has an axial through hole, characterized in that: The precision press-to-dispense liquid device includes: A liquid dispensing tube assembly, extending through an axial through-hole in the bottle cap, comprises: The hollow tube body forms a liquid collection cavity inside; A sealed base is located at the lower end of the tube and has a liquid extraction hole; The first one-way valve is composed of a valve ball with a diameter larger than that of the liquid intake hole, and is located above the liquid intake hole; Press-to-execute components include: A hollow pressing column is coaxially fitted inside the liquid dispensing chamber, with its upper part extending out of the bottle cap. The second one-way valve consists of a valve ball located in the pressing column cavity and a limiting neck formed at the end of the cavity, wherein the inner diameter of the neck is smaller than the diameter of the valve ball. The reset mechanism includes a reset spring, which is connected between the lower end of the pressing column and the sealed base of the liquid dispensing tube to realize the axial reset movement of the pressing column in the pressing column cavity; A quantitative liquid dispensing platform is horizontally positioned at the top of the pressing column, and its platform surface is provided with an array of liquid outlet holes that communicate with the pressing column cavity; An axial fixing mechanism includes a fastening bolt fitted onto the neck of the pressing column, which passes through the bottle cap to achieve a secure connection between the pressing column, the bottle cap, and the dispensing tube.

2. The precision press-to-dispense liquid device according to claim 1, characterized in that: The liquid collection tube is equipped with a liquid collection filter screen with a pore size of 0.2-0.5mm at its tail end.

3. The precision press-to-dispense liquid device according to claim 1, characterized in that: The pressing column is equipped with a column end filter screen with a pore size of 0.2-0.5mm.

4. The precision press-to-dispense liquid device according to claim 1, characterized in that: The liquid outlet array consists of multiple liquid outlet holes with a diameter ≤0.2mm, and a non-porous isolation strip is provided in the corresponding central area of ​​the pressing column cavity.

5. The precision press-to-dispense liquid device according to claim 1, characterized in that: It is equipped with an upper limit neck located above the push-button valve ball.

6. The precision press-to-dispense liquid device according to claim 1, characterized in that: Press the limiting neck part below the cylinder cavity, which can be disassembled and replaced via a threaded connection.

7. The precision press-to-dispense liquid device according to claim 1, characterized in that: The difference in inner diameter between the limiting neck and the upper limiting neck is 10-30% of the valve ball diameter.

8. The precision press-to-dispense liquid device according to claim 1, characterized in that: A vent hole for the liquid collection tube is provided on the upper wall of the tube.

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