Continuous and accurate liquid taking device

Abstract

The utility model is suitable for the technical field of material taking equipment, and provides a continuous and accurate liquid taking device which comprises a cylindrical shell, a liquid taking device, a liquid taking device and a liquid taking device, and the two ends of the cylindrical shell are provided with a feeding port, a discharging port and a driving port; the rotating inner core is rotationally connected to the interior of the cylindrical shell, at least two quantitative spaces are formed in the rotating inner core, the quantitative spaces communicate with the feeding port or the discharging port when the rotating inner core rotates to a certain angle, plungers are arranged in the quantitative spaces in a sliding mode, and when the quantitative spaces rotate to coincide with the feeding port, the plungers communicate with the feeding port or the discharging port. The driving opening coincides with the other end of the quantitative space and drives the plunger to slide to suck materials, and when the quantitative space coincides with the discharging opening, the plunger discharges the liquid in the quantitative space, so that by arranging the structure capable of combining accurate material taking and continuous material taking, it is guaranteed that when the liquid needs to be taken, the continuous material taking can be achieved, and the material taking efficiency is improved. The material taking amount is controlled through the quantitative space, meanwhile, the quantitative space is switched through the rotating structure, and the continuous and accurate material taking process is achieved.

Description

Technical Field

[0001] This utility model relates to the field of material handling equipment technology, and in particular to a continuous and precise liquid handling device. Background Technology

[0002] In the production process of liquid materials such as coatings, the coatings need to be mixed, stirred, filtered, and bagged. Material handling equipment is often used to bag or test the produced coatings.

[0003] Most material handling equipment has a simple structure, generally consisting of a material handling bin with an opening at the top, from which the paint is directly scooped out. This can lead to discontinuous material handling processes, affecting efficiency.

[0004] Moreover, existing sampling equipment requires the use of an adsorption syringe to sample the liquid inside the sampling tank, or a flow meter to sample the liquid directly. However, the sampling process requires control of the liquid volume. When sampling in the above ways, flow control and continuous sampling cannot be combined, which increases the uncertainty of the sampling process.

[0005] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0006] To address the aforementioned shortcomings, the purpose of this utility model is to provide a continuous and precise liquid dispensing device. This device combines precise dispensing with continuous dispensing through a structure that allows for control of the dispensing amount via a quantitative space when liquid dispensing is required. Simultaneously, the quantitative space can be switched by rotating the structure, thus achieving a continuous and precise dispensing process.

[0007] To achieve the above objectives, this utility model provides a continuous and precise liquid feeding device, comprising: a cylindrical outer shell with an inlet, an outlet, and a drive port at both ends; a rotating inner core rotatably connected inside the cylindrical outer shell, the rotating inner core having at least two metering spaces, the metering spaces communicating with the inlet or outlet when the rotating inner core rotates to a certain angle, a plunger slidingly disposed inside the metering space, the drive port aligning with the other end of the metering space when the metering space rotates to coincide with the inlet, and driving the plunger to slide and suck up the liquid, and the plunger discharging the liquid inside the metering space when the metering space coincides with the outlet.

[0008] According to the continuous and precise liquid feeding device of this utility model, the rotating inner core is provided with four quantitative spaces, the quantitative spaces are through holes in the rotating inner core, and the plunger is slidably connected to the inside of the through holes.

[0009] According to the continuous and precise liquid feeding device of this utility model, the end of the through hole away from the inlet and outlet is provided with a threaded part, and a control screw for controlling the extreme position of the plunger is screwed inside the threaded part. A thrust spring is provided between the control screw and the plunger.

[0010] According to the continuous and precise liquid feeding device of this utility model, the bottom of the control screw is provided with a limiting protrusion that fits against the inner wall of the through hole, the inside of the control screw is provided with a vent hole, and the top of the control screw is provided with an internal hexagonal hole.

[0011] According to the continuous and precise liquid feeding device of this utility model, the cylindrical shell has a balance hole at the end away from the discharge port that coincides with the axis of the discharge port, and a filter screen is provided inside the balance hole.

[0012] According to the continuous and precise liquid feeding device of this utility model, an adjustment hole is provided at one end of the cylindrical shell away from the inlet and outlet, a cover plate is provided on the outside of the adjustment hole, and a drive motor is provided on the cylindrical shell to drive the rotating inner core to rotate.

[0013] In summary, the technical effects achieved by this utility model are:

[0014] 1. By setting up a quantitative space that can control the size of the internal space, the amount of liquid being taken can be controlled, thereby achieving precise control of the amount of liquid taken and ensuring accurate control of the amount of liquid taken.

[0015] 2. By setting a rotating inner core structure, the quantitative space is set on the rotating inner core. Thus, through the rotating structure of the rotating inner core, the liquid can be accurately dispensed while achieving continuous dispensing. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 3 This is a three-dimensional structural diagram of the control screw and plug of this utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of the rotating inner core of this utility model;

[0020] In the diagram, 1-cylindrical outer shell, 2-drive port, 3-drive motor, 4-filter screen, 5-cover plate, 6-discharge port, 7-inlet port, 8-control screw, 81-internal hexagonal hole, 82-limiting protrusion, 9-thrust spring, 10-plunger, 11-rotating inner core, 111-threaded part, 112-through hole, 113-rotating shaft. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0022] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0023] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0024] See Figure 1 and Figure 2 This utility model provides a continuous and precise liquid feeding device, which includes a cylindrical shell 1 with an inlet 7, an outlet 6 and a drive port 2 at both ends. To ensure the normal use of the inlet 7 and the outlet 6, the inlet 7 and the outlet 6 can be set at one end of the cylindrical shell 1. This ensures that when liquid needs to be discharged and sucked in, the plunger 10 can act on the liquid to realize the discharge and sucking of the liquid inside the quantitative space, thereby controlling the liquid inside.

[0025] To achieve continuous liquid feeding, a rotating inner core 11 is incorporated, rotatably connected to the interior of the cylindrical outer shell 1. The rotating inner core 11 has at least two metering spaces. By creating multiple metering spaces, it is ensured that while one metering space is discharging, another can be feeding, thus guaranteeing continuous feeding. When the rotating inner core 11 rotates to a certain angle, the metering space connects to either the inlet 7 or the outlet 6. Each metering space connects only to one of these two ports, ensuring normal feeding and discharging. A plunger 10, which can be made of rubber, slides inside the metering space to facilitate the suction and discharge of liquid. When the metering space rotates to coincide with the inlet 7... The drive port 2 coincides with the other end of the metering space. The outside of the drive port 2 is connected to the negative pressure supply mechanism (existing technology, not described in detail) and drives the plunger 10 to slide and suck up the material. The negative pressure mechanism supplies negative pressure to one end of the plunger 10, so that under the action of air pressure, the plunger 10 slides back, thereby sucking the liquid from the feed port 7 into the interior of the metering space. When the interior of the metering space is full of liquid, the drive motor 3 rotates, which drives the rotating inner core 11 to rotate. The rotating shaft 113 of the rotating inner core is connected to the output shaft of the drive motor, thereby rotating the empty metering space to coincide with the position of the feed port 7. When the metering space coincides with the discharge port 6, the plunger 10 discharges the liquid inside the metering space. At this time, the metering space alternately coincides with the discharge port 6 and the feed port 7, thereby completing the normal suction and discharge process.

[0026] In one exemplary embodiment of this invention, four metering spaces are provided on the rotating inner core 11. These four metering spaces are evenly arranged around the rotation axis of the rotating inner core 11, ensuring that the metering spaces can alternately contact the feed inlet 7 and the discharge outlet 6. This optimizes the continuity of material discharge from the discharge outlet 6 as much as possible. The metering spaces are through holes 112 in the rotating inner core 11, and the plunger 10 is slidably connected inside the through holes 112. This ensures that the liquid can be discharged by controlling the position of the plunger 10 inside the through holes 112. At the same time, the size of the metering spaces can be controlled by controlling the extreme position of the plunger 10, thereby controlling the unit material intake. Since the unit material intake is accurately controlled, it can be ensured that the liquid fills the corresponding metering space after material intake, thus achieving precise control of material intake.

[0027] Additionally, in another exemplary embodiment, see [link to example]. Figure 4A threaded portion 111 is provided at the end of the through hole 112 away from the inlet 7 and the outlet 6. A control screw 8 for controlling the extreme position of the plunger 10 is screwed into the threaded portion 111. By adjusting the position of the control screw 8, the extreme position of the plunger 10 is controlled, thereby controlling the size of the quantitative space and realizing the control of the unit quantity of the quantitative space. A thrust spring 9 is provided between the control screw 8 and the plunger 10. When the plunger 10 is reset, the thrust spring 9 will reset the plunger 10 to the inner wall of the outer shell, thereby completely discharging the liquid inside the through hole 112.

[0028] In another embodiment, to ensure the reset force of the plunger 10 and the effect of liquid discharge, a positive pressure port coinciding with the axis of the outlet 6 can be provided. This positive pressure port is connected to a gas supply mechanism. When the through-hole 112 coincides with the outlet 6, positive pressure gas is injected into the other end of the plunger 10 through the positive pressure port, pressing the plunger 10 against the other end of the through-hole 112 to completely discharge the internal liquid. To ensure the plunger 10 is in the correct position, the inner diameters of the inlet 7 and outlet 6 can be set smaller than the inner diameter of the through-hole 112 to control the plunger 10 and prevent it from falling out of the outlet 6 and inlet 7. In this embodiment, a thrust spring 9 is not required; the positive pressure gas supplied through the positive pressure port directly replaces the thrust of the thrust spring 9.

[0029] Further, see Figure 3 The bottom of the control screw 8 is provided with a limiting protrusion 81 that fits against the inner wall of the through hole 112. The inside of the control screw 8 is provided with a vent hole, and the top of the control screw 8 is provided with an internal hexagonal hole 81. By providing a vent hole inside the control screw 8, it is ensured that when negative or positive pressure gas is supplied, the gas can directly act on the plunger 10 and push the plunger 10 to move.

[0030] Even better, the end of the cylindrical housing 1 furthest from the outlet 6 is provided with a balance hole that coincides with the axis of the outlet 6. A filter screen 4 is installed inside the balance hole. This balance hole structure ensures that when the thrust spring 9 pushes the plunger 10 to move, the air pressure on one side of the plunger 10 will not affect its movement, thus ensuring the normal hydraulic movement of the plunger 10. Simultaneously, the filter screen protects against external gas contamination, preventing large impurities from entering the cylindrical housing and affecting the use of the plunger 10. Furthermore, in the embodiment with a positive pressure port, the balance hole is replaced by a positive pressure port. There is no need to set up a filter screen 4 structure, so it can be directly connected to the air supply mechanism to ensure the push of the plunger 10. At the same time, the end of the cylindrical shell 1 away from the feed port 7 and the discharge port 6 is provided with an adjustment hole. The outside of the adjustment hole is provided with a cover plate 5, which protects the inside of the shell when not in use. When needed, the cover plate 5 can be opened to adjust the position of the control screw 8 inside by using a hex wrench to complete the adjustment of the extreme position of the plunger 10. The cylindrical shell 1 is provided with a drive motor 3 that drives the inner core 11 to rotate. The drive motor 3 can be a servo motor to ensure the accuracy of control.

[0031] When using, combine Figures 1-4 By directly connecting the drive port 2 to the negative pressure pipe of the gas supply mechanism (when there is a positive pressure port, connect the positive pressure port to the positive pressure pipe of the gas supply mechanism), and then connecting the feed port 7 and the discharge port 6 to the corresponding pipes, the drive motor 3 rotates to rotate the corresponding through hole 112 to connect with the feed port 7. At this time, the gas supply mechanism supplies negative pressure to the inside of the drive port 2, and the plunger 10 slides towards the drive port 2 under force. When the plunger 10 slides to the limit position of the limiting plunger 10, the drive motor 3 rotates to switch the other corresponding through hole 112 to the feed port 7. This process is repeated. Then, when the through hole 112 moves to the discharge port 6, the plunger 10 is pushed directly to the position of the discharge port 6 under the action of the thrust spring 9 or by directly supplying positive pressure gas through the positive pressure port. The internal liquid is discharged from the discharge port 6, completing the quantitative feeding and discharging process. At the same time, the inner core 11 rotates, realizing the continuous feeding process.

[0032] Of course, there may be other embodiments of this utility model. Without departing from the spirit and essence of this utility model, those skilled in the art can make various corresponding changes and modifications based on this utility model, but these corresponding changes and modifications should all fall within the protection scope of the appended claims of this utility model.

Claims

1. A continuous precision liquid dispensing device, characterized by, include: The cylindrical outer casing has a feed inlet, a discharge outlet, and a drive port at both ends; A rotating inner core is rotatably connected inside the cylindrical outer shell. The rotating inner core has at least two metering spaces. When the rotating inner core rotates to a certain angle, the metering spaces are connected to the inlet or outlet. A plunger is slidably installed inside the metering space. When the metering space rotates to coincide with the inlet, the drive port coincides with the other end of the metering space and drives the plunger to slide and suck up the material. When the metering space coincides with the outlet, the plunger discharges the liquid inside the metering space.

2. The continuous precision liquid dispensing apparatus of claim 1, wherein, The rotating inner core is provided with four quantitative spaces, which are through holes in the rotating inner core, and the plunger is slidably connected to the inside of the through holes.

3. The continuous precision liquid dispensing apparatus of claim 2, wherein, The end of the through hole away from the inlet and outlet is provided with a threaded part, and a control screw for controlling the extreme position of the plunger is screwed into the threaded part. A thrust spring is provided between the control screw and the plunger.

4. The continuous precision liquid dispensing apparatus of claim 3, wherein, The bottom of the control screw is provided with a limiting protrusion that fits against the inner wall of the through hole, the inside of the control screw is provided with a vent hole, and the top of the control screw is provided with an internal hexagonal hole.

5. The continuous precision liquid dispensing apparatus of claim 1, wherein, The cylindrical outer shell has a balance hole at the end away from the discharge port that coincides with the axis of the discharge port, and a filter screen is provided inside the balance hole.

6. The continuous precision liquid dispensing apparatus of claim 5, wherein, An adjustment hole is provided at one end of the cylindrical outer shell away from the inlet and outlet. A cover plate is provided on the outside of the adjustment hole. A drive motor is provided on the cylindrical outer shell to drive the rotating inner core to rotate.

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