Quantitative mechanism and press type liquid outlet device
By designing a flow-controlling ring groove with a knob adjustment that aligns with the liquid outlet, and combining it with a gear locking structure and a double-sealed ball return spring, the problem of uncontrollable liquid output from traditional liquid containers is solved, thus realizing a press-type liquid dispensing device with quantitative liquid output and good sealing performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGNAN UNIV
- Filing Date
- 2025-05-23
- Publication Date
- 2026-05-29
AI Technical Summary
Traditional liquid containers have uncontrollable output, which is easy to waste. Existing metering pumps have complex structures and high costs, making it difficult to adapt to liquids of different viscosities. Manual adjustment devices lack precise scale feedback, and the reset mechanism has insufficient sealing.
A quantitative mechanism was designed, including an installation unit, a flow control unit, and a liquid pushing unit. The flow rate is controlled by adjusting the through groove of the flow-stopping ring to align with the liquid outlet using a knob. A gear locking structure provides adjustment feedback, and a limiting groove and a limiting block ensure stable pressing. Double sealing balls combined with a reset spring achieve precise liquid dispensing and sealing.
It features four adjustable dispensing levels to ensure precise dispensing upon pressing, prevent accidental mis-touch and misalignment, and avoid jamming. The double sealing ball combined with the return spring ensures accurate dispensing when pressed and automatic replenishment and sealing when released.
Smart Images
Figure CN224297840U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of daily necessities, and in particular to a quantitative mechanism and a press-type liquid dispensing device. Background Technology
[0002] Traditional liquid containers typically use direct pouring or squeezing methods to extract liquid, which results in uncontrollable liquid output and easy waste.
[0003] Existing metering pumps have complex structures, rely on electronic sensors or mechanical metering devices, are costly and difficult to maintain, and are difficult to adapt to liquids of different viscosities. Manually adjustable dispensing devices, such as rotary valves, lack precise scale feedback, are prone to setpoint deviations due to accidental touches, and the reset mechanism has insufficient sealing, which can easily cause liquid backflow or air ingress. Utility Model Content
[0004] In view of the problems existing in the above-mentioned quantitative mechanisms, this utility model is proposed.
[0005] Therefore, this utility model provides a quantitative mechanism, the purpose of which is to solve the problem that traditional liquid containers usually use direct pouring or squeezing to extract liquid, which results in uncontrollable liquid output and easy waste.
[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a quantitative mechanism, including an installation unit, including an installation cover, a piston disposed within the installation cover, and a liquid outlet disposed within the installation cover; a flow control unit, including a knob disposed on the installation cover, a button disposed on the knob, an adjusting member disposed within the installation cover and connected to the knob, and a pressing member disposed within the installation cover and cooperating with the button.
[0007] As a preferred embodiment of the quantitative mechanism of this utility model, the following features are provided: a liquid pushing channel is provided inside the piston, and an opening groove is provided on the outer wall of the piston;
[0008] The liquid pushing channel is connected to the liquid outlet through an opening groove.
[0009] As a preferred embodiment of the quantitative mechanism of this utility model, the adjusting component includes an adjusting groove disposed on the upper side of the mounting cover, a gear disposed in the adjusting groove, a rotating groove disposed on the lower inner wall of the adjusting groove, and a flow-blocking ring disposed in the rotating groove. The outer wall of the flow-blocking ring has four sets of through grooves evenly distributed in a ring.
[0010] As a preferred embodiment of the quantitative mechanism of this utility model, the included angles of two adjacent sets of through grooves in the circumferential direction of the intercepting ring are equal, and the opening widths of the four sets of through grooves vary regularly.
[0011] As a preferred embodiment of the metering mechanism of the present utility model, wherein: the rotating groove is communicated with the liquid outlet.
[0012] As a preferred embodiment of the metering mechanism of the present utility model, wherein: the pressing member includes a limiting groove provided in the mounting cover and a limiting block provided in the limiting groove.
[0013] As a preferred embodiment of the metering mechanism of the present utility model, wherein: the upper part of the limiting block is fixedly connected to the button, and the lower part of the limiting block is embedded in the upper port of the piston.
[0014] As a preferred embodiment of the metering mechanism of the present utility model, wherein: it further includes a limiting member, the limiting member is engaged with the gear, the limiting member includes a reset hole provided in the inner wall of the adjusting groove, a limiting spring provided in the reset hole, and a locking block provided on the limiting spring;
[0015] The locking block is engaged with the gear.
[0016] As a preferred embodiment of the pressing type liquid discharging device of the present utility model, wherein: the liquid pushing unit includes a chamber, a suction pipe provided at the lower port of the chamber, and a liquid discharging member provided in the chamber;
[0017] The piston is embedded in the upper port of the chamber.
[0018] As a preferred embodiment of the pressing type liquid discharging device of the present utility model, wherein: the liquid discharging member includes a protective cover provided at the bottom of the inner wall of the chamber, a reset spring provided on the protective cover, a first sealing ball provided in the chamber below the protective cover, a flow limiting channel provided in the inner wall of the piston, and a second sealing ball provided in the flow limiting channel;
[0019] The reset spring is engaged with the piston.
[0020] The beneficial effects of the present utility model: The liquid discharge amount can be adjusted in four gears. The flow rate is controlled by the alignment area between the throttling ring through groove and the liquid outlet, ensuring pressing and metering liquid discharge. The gear locking structure provides adjustment feedback to prevent accidental touch and deviation; the "middle" - shaped limiting groove ensures stable pressing and avoids jamming. The double - sealing balls cooperate with the reset spring to accurately discharge liquid when pressing, automatically replenish liquid and maintain sealing when released. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0022] Figure 1 This is a schematic diagram of the overall structure of the quantitative mechanism of this utility model.
[0023] Figure 2 This is a schematic diagram of the piston structure in the quantitative mechanism of this utility model.
[0024] Figure 3 This is a cross-sectional view of the quantitative mechanism of this utility model.
[0025] Figure 4 for Figure 3 Enlarged diagram of point A in the middle.
[0026] Figure 5 This is a schematic diagram of the gear structure in the quantitative mechanism of this utility model.
[0027] Figure 6 This is a schematic diagram of the overall structure of the press-type liquid dispensing device of this utility model.
[0028] Figure 7 This is a cross-sectional view of the press-type liquid dispensing device of this utility model. Detailed Implementation
[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0030] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0031] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive, either alone or selectively, with other embodiments.
[0032] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.
[0033] Example 1, referring to Figures 1-5This is the first embodiment of the present invention, which provides a metering mechanism, including an installation unit 1, including an installation cover 11, a piston 12 disposed within the installation cover 11, and a liquid outlet 13 disposed within the installation cover 11; and a flow control unit 2, including a knob 21 disposed on the installation cover 11, a button 22 disposed on the knob 21, an adjusting member 23 disposed within the installation cover 11 and connected to the knob 21, and a pressing member 24 disposed within the installation cover 11 and cooperating with the button 22.
[0034] Furthermore, the bottom of the mounting cap 11 is provided with a threaded groove to accommodate bottle openings of different sizes, enabling quick installation. The upper side of the mounting cap 11 is provided with a knob 21 that can be turned left and right to adjust the liquid volume. The knob 21 adopts a cross-shaped layout and is marked with four fixed scales of 5ml, 10ml, 15ml and 20ml, which can meet the needs of different users for the amount of shampoo used. Users only need to turn the knob 21 to align the target scale with the dispensing port 13 to set the required liquid volume.
[0035] The adjusting component 23 includes an adjusting groove 231 disposed on the upper side of the mounting cover 11, a gear 232 disposed in the adjusting groove 231, a rotating groove 233 disposed on the lower inner wall of the adjusting groove 231, and a flow-blocking ring 234 disposed in the rotating groove 233. Four sets of through grooves 235 are evenly distributed in a ring on the outer wall of the flow-blocking ring 234.
[0036] Among them, the side of the mounting cover 11 is provided with an annular adjustment groove 231, and a gear 232 is installed inside, which is linked with the knob 21. Below the adjustment groove 231 is a coaxial rotating groove 233, which contains a rotatable intercepting ring 234. The intercepting ring 234 has four sets of through grooves 235 evenly distributed in the circumferential direction, corresponding to four liquid output volumes of 5ml, 10ml, 15ml and 20ml respectively.
[0037] The chamber 31 forms a fixed compression volume. By adjusting the alignment area between the through groove 235 and the outlet 13, the liquid outflow speed is controlled: when the opening is large, such as 20ml, the through groove 235 is fully open, the liquid flow resistance is small, and when pressed to the bottom, almost all the liquid in the fixed volume is discharged; when the opening is small, such as 5ml, the through groove 235 is partially blocked, the flow resistance increases, and only a portion of the liquid is discharged within the same pressing time. The remaining liquid is drawn back into the chamber 31 when the button 22 is released. After being pressed by the button 22, the liquid enters the piston 12 and then flows into the outlet 13 area through the opening groove 122 on the outer wall of the piston 12. Only when the through groove 235 of the intercepting ring 234 is aligned with the outlet 13 can the liquid be squeezed out through the designated channel to ensure quantitative output.
[0038] In use, turn the knob 21 to align the target scale, such as 10 ml, with the liquid outlet 13. The throttling ring 234 rotates synchronously, so that the corresponding through groove 235 matches the liquid outlet 13. Press the button 22 to the bottom, and the liquid is discharged at a set opening degree, ensuring that the single liquid discharge volume is accurate, such as 10 ml. If the pressing time is insufficient, the un-discharged liquid will automatically flow back when the button 22 is released, avoiding excessive liquid discharge.
[0039] The pressing member 24 includes a limiting groove 241 provided in the mounting cover 11, a limiting block 242 provided in the limiting groove 241. A "zhong" - shaped limiting groove 241 is formed on the upper side surface of the knob 21, constituting a special guiding track. The limiting block 242 is set to have a "zhong" - shaped cross - section that completely matches the limiting groove 241. When the limiting block 242 slides vertically along the limiting groove 241: the upper and lower end faces form axial stops, limiting the stroke range. The cooperation between the limiting groove 241 and the limiting block 242 ensures the pure linear motion of the limiting groove 241. The top end of the limiting block 242 is rigidly fixed to the button 22, and the extended section at the bottom end of the limiting block 242 is inserted into the upper port of the piston 12, forming a sliding - pair fit.
[0040] Further, a reset hole 251 is opened on the inner side wall of the adjustment groove 231. A limiting spring 252 is installed in the reset hole 251 to provide an axial elastic restoring force. A locking block 253 is provided at the end of the limiting spring 252, and its working surface meshes with the tooth profile of the gear 232;
[0041] When the user rotates the knob 21, the gear 232 rotates synchronously, and its teeth periodically squeeze the locking block 253, forcing the limiting spring 252 to compress and store energy; when the teeth pass over the locking block 253, the limiting spring 252 releases its potential energy to reset the locking block 253. An obvious sense of jerk is formed through the reciprocating deformation of the limiting spring 252, improving the adjustment feel. When the gear 232 rotates to a preset angle, the locking block 253 is snapped into the tooth groove, and the position of the gear 232 is locked by the pre - tightening force of the limiting spring 252 to prevent accidental deviation.
[0042] Embodiment 2, refer to Figures 6-7 , which is the second embodiment of the present utility model. The difference between this embodiment and the first embodiment is: a pressing - type liquid - discharging device is provided, including a liquid - pushing unit 3, including a chamber 31, a straw 32 provided at the lower port of the chamber 31, and a liquid - discharging member 33 provided in the chamber 31; the piston 12 is embedded in the upper port of the chamber 31. The liquid - discharging member 33 includes a protective cover 331 provided at the bottom of the inner wall of the chamber 31, a reset spring 332 provided on the protective cover 331, a first sealing ball 333 provided in the chamber 31 below the protective cover 331, a flow - limiting channel 334 provided in the inner wall of the piston 12, and a second sealing ball 335 provided in the flow - limiting channel 334; the reset spring 332 and the piston 12 cooperate with each other.
[0043] Furthermore, chamber 31 is a sealed space for storing liquid. Piston 12 moves up and down within chamber 31 to control liquid flow. Return spring 332 provides a restoring force, allowing piston 12 to return to its original position after being pressed. Straw 32 connects the liquid inside the bottle to chamber 31. First sealing ball 333 allows liquid to enter the pump body from the bottle, preventing backflow. Second sealing ball 335 controls the flow of liquid from chamber 31 to the outlet, preventing air backflow.
[0044] In the normal state, the return spring 332 is in the extended state, the piston 12 is located at the top of the chamber 31, and the first sealing ball 333 keeps the chamber 31 sealed by its own weight, preventing the liquid in the chamber 31 from flowing back into the bottle. The second sealing ball 335 keeps the chamber 31 sealed by its own weight, preventing air from entering the chamber 31. Pressing the button 22 pushes the piston 12 down, compressing the return spring 332. The piston 12 pushes the liquid in the chamber 31 upward, reducing the volume of the chamber 31 and increasing the air pressure. The liquid pushes the second sealing ball 335 upward, thus squeezing the liquid out through the outlet 13. Releasing the button 22 causes the return spring 332 to drive the piston 12 to return to its original position. This creates a low pressure in the chamber 31, which sucks up the first sealing ball 333 and simultaneously draws the liquid from the bottle into the chamber 31. Meanwhile, the second sealing ball 335 sucks downward, keeping the chamber 31 airtight. This completes the liquid pushing operation.
[0045] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.
[0046] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.
[0047] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A quantitative mechanism, characterized in that: include, The mounting unit (1) includes a mounting cover (11), a piston (12) disposed within the mounting cover (11), and a liquid outlet (13) disposed within the mounting cover (11). The flow control unit (2) includes a knob (21) disposed on the mounting cover (11), a button (22) disposed on the knob (21), an adjusting member (23) disposed inside the mounting cover (11) and connected to the knob (21), and a pressing member (24) disposed inside the mounting cover (11) and cooperating with the button (22).
2. The quantitative mechanism according to claim 1, characterized in that: A liquid-pushing channel (121) is provided inside the piston (12), and an opening groove (122) is provided on the outer wall of the piston (12); The liquid pushing channel (121) is connected to the liquid outlet (13) through the opening groove (122).
3. The quantitative mechanism according to claim 1, characterized in that: The adjusting component (23) includes an adjusting groove (231) disposed on the upper side of the mounting cover (11), a gear (232) disposed in the adjusting groove (231), a rotating groove (233) disposed on the lower inner wall of the adjusting groove (231), and a flow-blocking ring (234) disposed in the rotating groove (233). The outer wall of the flow-blocking ring (234) has four sets of through grooves (235) evenly distributed in a ring.
4. The quantitative mechanism according to claim 3, characterized in that: The included angles of the two adjacent sets of through grooves (235) in the circumferential direction of the intercepting ring (234) are equal, and the opening widths of the four sets of through grooves (235) vary regularly.
5. The quantitative mechanism according to claim 4, characterized in that: The rotating groove (233) and the liquid outlet (13) are connected.
6. The quantitative mechanism according to claim 1, characterized in that: The pressing member (24) includes a limiting groove (241) disposed in the mounting cover (11) and a limiting block (242) disposed in the limiting groove (241).
7. The quantitative mechanism according to claim 6, characterized in that: The upper part of the limiting block (242) is fixedly connected to the button (22), and the lower part of the limiting block (242) is embedded in the upper port of the piston (12).
8. The quantitative mechanism according to claim 3, characterized in that: It also includes a limiting member (25), which cooperates with the gear (232). The limiting member (25) includes a reset hole (251) disposed on the inner wall of the adjusting groove (231), a limiting spring (252) disposed in the reset hole (251), and a locking block (253) disposed on the limiting spring (252). The locking block (253) and the gear (232) are engaged.
9. A press-type liquid dispensing device, comprising the metering mechanism according to any one of claims 1 to 8, characterized in that: include The liquid pushing unit (3) includes a chamber (31), a suction tube (32) disposed at the lower port of the chamber (31), and a liquid outlet (33) disposed in the chamber (31); The piston (12) is embedded in the upper port of the chamber (31).
10. The press-type liquid dispensing device according to claim 9, characterized in that: The liquid outlet component (33) includes a protective cover (331) disposed at the bottom of the inner wall of the chamber (31), a return spring (332) disposed on the protective cover (331), a first sealing ball (333) disposed in the chamber (31) below the protective cover (331), a flow-limiting channel (334) disposed on the inner wall of the piston (12), and a second sealing ball (335) disposed in the flow-limiting channel (334). The return spring (332) and piston (12) cooperate with each other.