A fully corrosion-resistant continuous acid transfer device

Abstract

This invention belongs to the field of laboratory equipment technology, specifically a fully corrosion-resistant continuous acid pipette. The pipette includes a gun-shaped body and a solution bottle. The gun-shaped body includes a shell, a T-shaped fluid chamber, a dispensing nozzle, an injection assembly, a trigger, and a scale. The T-shaped fluid chamber and injection assembly are located inside the shell, while a scale and a range adjustment assembly are located on the outside of the shell. The first end of the T-shaped fluid chamber is connected to the dispensing nozzle via a first one-way valve, the second end of the T-shaped fluid chamber is connected to the solution in the solution bottle via a solution tube, and the third end of the T-shaped fluid chamber is connected to the injection assembly. The gun-shaped body and the solution bottle are connected via a solution tube, and the end of the solution tube extending into the solution is equipped with a second one-way valve. This invention enables continuous pipetting operations. When multiple equal-volume pipetting operations are required, only one adjustment of the range adjustment block is needed, and repeated triggering can achieve uninterrupted continuous pipetting.

Description

Technical Field

[0001] This utility model belongs to the field of laboratory equipment technology, specifically a fully corrosion-resistant continuous acid transfer device. Background Technology

[0002] In chemical experiments, it is often necessary to transfer a fixed quantity of liquid (1 mL to 50 mL, etc.) to another designated container. Laboratory operators typically use pipettes or other quantitative liquid transfer devices to transfer a specific volume of liquid. Currently, the main quantitative liquid transfer devices include single-channel pipettes, multi-channel pipettes, bottle-top dispensers, and quantitative liquid dispensers. However, using these quantitative liquid transfer devices is not only extremely complex and inefficient, but also presents the following problems:

[0003] (1) The operation requirements are high. The operation should be slow and steady. It cannot be reversed or laid flat. It has poor resistance to strong acid and strong alkali corrosion.

[0004] (2) When transferring liquids, the accuracy of the transfer is affected by the operator's technique and experience. Novices are prone to errors due to improper operation (such as aspiration speed, angle, and pressure depth). It requires a certain level of technical ability to transfer liquids accurately, and it is not suitable for all groups.

[0005] (3) The handling of special solutions such as volatile solutions, foaming solutions, and high viscosity solutions is complicated and has certain limitations.

[0006] (4) Regular calibration is required to ensure accuracy (especially in high-precision experiments), and the calibration process is cumbersome. Utility Model Content

[0007] In view of the above-mentioned problems of existing quantitative fluid transfer devices, the purpose of this utility model is to provide a fully corrosion-resistant continuous acid transfer device to achieve precise quantitative continuous transfer of special solutions and avoid corrosion problems caused by leakage.

[0008] The objective of this utility model is achieved through the following technical solution:

[0009] This utility model includes a gun-shaped body and a solution bottle. The gun-shaped body includes a shell, a T-shaped fluid chamber, a dispensing nozzle, an injection assembly, a trigger, and a scale. The T-shaped fluid chamber and the injection assembly are located inside the shell, and a scale is located on the outside of the shell. A range adjustment assembly is slidably mounted on the scale. The first end of the T-shaped fluid chamber is connected to the dispensing nozzle through a first one-way valve. The second end of the T-shaped fluid chamber is connected to the solution in the solution bottle through a solution tube. The third end of the T-shaped fluid chamber is connected to the injection assembly. One end of the trigger is hinged to the power end of the injection assembly, and the other end of the trigger abuts against the range adjustment block assembly. A three-way valve is located at the top of the solution bottle. The solution tube passes through the first and second through holes of the three-way valve and extends into the solution inside the solution bottle. A balloon valve is located on the third through hole of the three-way valve. A second one-way valve is located on the end of the solution tube that extends into the solution.

[0010] Preferably, the injection assembly includes a syringe barrel, a plunger, a plunger spring, and a plunger end cap disposed within the housing. The top of the plunger is slidably engaged with the inner wall of the syringe barrel, and the bottom of the plunger is hinged to the trigger through the plunger end cap, with the plunger and plunger end cap also slidably engaged. The plunger, plunger end cap, and inner wall of the syringe barrel form a sealed cavity, and the plunger spring is sleeved on the outside of the plunger located within the sealed cavity. The top of the syringe barrel communicates with the third end hole of the T-shaped fluid chamber.

[0011] Preferably, the first one-way valve includes a one-way fluid chamber, a one-way plug, a first one-way valve spring, and a one-way plug nut. The one-way fluid chamber is disposed inside the outer shell, and the inlet of the one-way fluid chamber is connected to the first end hole of the T-shaped fluid chamber, and the outlet of the one-way fluid chamber is connected to the dispensing nozzle. A one-way plug is provided inside the one-way fluid chamber, one end of the one-way plug abuts against the outlet of the one-way fluid chamber, and a one-way plug nut is provided at the other end of the one-way plug. The first one-way valve spring is sleeved on the outside of the one-way plug, and one end of the first one-way valve spring is connected to the inner wall of the one-way fluid chamber, and the other end of the first one-way valve spring is connected to the one-way plug nut.

[0012] Preferably, the second one-way valve includes a bottom one-way valve cover, a second one-way valve spring, a bottom one-way valve ball, a bottom one-way valve body, and a first locking nut. The bottom one-way valve body is disposed at the bottom of the solution bottle. The bottom one-way valve ball and the second one-way valve spring are both disposed inside the bottom one-way valve body. The bottom one-way valve ball abuts against the liquid inlet at the bottom of the bottom one-way valve body, and the second one-way valve spring is disposed above the bottom one-way valve ball. The bottom end of the bottom one-way valve cover communicates with the interior of the bottom one-way valve body, and the bottom end of the bottom one-way valve cover abuts against the second one-way valve spring. The top end of the bottom one-way valve cover communicates with the solution tube. A first locking nut is disposed at the connection between the bottom one-way valve cover and the solution tube.

[0013] Preferably, a second locking nut is provided at the connection point between the second end hole of the T-shaped fluid chamber and the solution tube.

[0014] Preferably, the top of the solution bottle is provided with a bottle cap, and the second through hole of the three-way valve passes through the bottle cap to communicate with the interior of the solution bottle.

[0015] Preferably, the range adjustment assembly includes a locking member and a range adjustment block, one end of the range adjustment block is slidably connected to the housing, and one side of the other end of the range adjustment block is slidably engaged with a scale; the locking member is disposed on the other side of the range adjustment block.

[0016] Preferably, the housing includes a housing body and a base, with the bottom of the housing body connected to the base.

[0017] The advantages and positive effects of this utility model are as follows:

[0018] 1. This utility model can perform continuous pipetting operations. When pipetting equal volumes multiple times, only the range adjustment block needs to be adjusted once, and the trigger can be pulled repeatedly to achieve uninterrupted continuous pipetting.

[0019] 2. This utility model has a scale and a range adjustment component on the outside of the outer shell. The range adjustment component adopts a sliding adjustment method, which is simple to adjust and easy to observe. It has low maintenance and replacement costs, high accuracy, and effectively reduces the number of periodic calibrations.

[0020] 3. The inlet portion of the solution bottle in this invention is located below the liquid surface, which, while satisfying conventional solution pipetting operations, is also suitable for pipetting special solutions such as volatile solutions, easily foaming solutions, and high-viscosity solutions. Both the inlet and outlet portions of the acid pipette are sealed with one-way valves, effectively preventing backflow of liquid from the outer casing and contamination of the solution in the bottle.

[0021] 4. The outer shell handle of this utility model adopts an ergonomic design, which is easy to grip. At the same time, the base is designed as a flat surface, which can be placed at will. When not in use, it can stand stably on a flat surface, which can prevent leakage due to tipping. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the gun-shaped body of this utility model;

[0023] Figure 2 This is a schematic diagram of the solution bottle of this utility model;

[0024] Figure 3 for Figure 1 A magnified view of a section at point A in the middle;

[0025] Figure 4 for Figure 1 A magnified view of a section at point B in the middle;

[0026] Wherein: 1 is the dispensing nozzle, 2 is the one-way fluid chamber, 3 is the one-way plug, 4 is the first one-way valve spring, 5 is the one-way plug nut, 6 is the outer shell, 7 is the T-type fluid chamber, 8 is the second locking nut, 9 is the washer, 10 is the solution tube, 11 is the syringe barrel, 12 is the plunger, 13 is the plunger spring, 14 is the plunger end cap, 15 is the hinge, 16 is the trigger, 17 is the locking element, 18 is the range adjustment block, 19 is the scale, 20 is the third locking nut, 21 is the tee, 22 is the balloon valve, 23 is the bottle cap, 24 is the fourth locking nut, 25 is the solution bottle, 26 is the bottom one-way valve cap, 27 is the second one-way spring, 28 is the bottom one-way valve ball, 29 is the bottom one-way valve body, and 30 is the first locking nut. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0030] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is 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 as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0033] like Figures 1 to 4 As shown, this utility model describes a fully corrosion-resistant continuous acid pipette, which has the advantages of resistance to strong acid and alkali corrosion, simple and flexible operation, and low cost. It can perform quantitative and continuous transfer of special solutions, effectively improving experimental efficiency. When multiple equal-volume pipetting operations are required, they can be achieved by repeatedly pulling the trigger 16, which improves accuracy and simplifies the operation process. The pipetting volume is calculated by the stroke of the plunger 12, effectively reducing the number of periodic calibrations.

[0034] This utility model includes a gun-shaped body and a solution bottle 25, wherein the gun-shaped body includes a shell 6, a T-shaped fluid chamber 7, a dispensing nozzle 1, an injection assembly, a trigger 16, and a scale 19.

[0035] like Figure 1 As shown, the outer casing 6 includes a main body and a base. The main body is gun-shaped and includes a cavity for housing the T-shaped fluid chamber 7 and a handle. The handle is ergonomically designed for easy hand operation, and its bottom is connected to the base. The T-shaped fluid chamber 7 is located inside the outer casing cavity, and an injection assembly is located inside the outer casing handle. A scale 19 is located on the outside of the outer casing 6, and a range adjustment assembly is slidably mounted on the scale 19.

[0036] The first end hole of the T-shaped fluid chamber 7 (i.e., one end of the T-shaped horizontal edge) is connected to the dispensing nozzle 1 through the first one-way valve. The second end hole of the T-shaped fluid chamber 7 (i.e., the other end of the T-shaped horizontal edge) is connected to the solution in the solution bottle 25 through the solution tube 10. The third end hole of the T-shaped fluid chamber 7 (i.e., the T-shaped edge) is connected to the injection assembly. One end of the trigger 16 is hinged to the power end of the injection assembly, and the other end of the trigger 16 abuts against the range adjustment block assembly. A three-way valve 21 is provided at the top of the solution bottle 25. The solution tube 10 passes through the first and second through holes of the three-way valve 21 and extends into the solution inside the solution bottle 25. A balloon valve 22 is provided on the third through hole of the three-way valve 21. A second one-way valve is provided at the end of the solution tube 10 that extends into the solution.

[0037] like Figure 1 As shown, in this embodiment, the injection assembly includes a syringe barrel 11, a plunger 12, a plunger spring 13, and a plunger end cap 14 disposed at the bottom of the syringe barrel 11, and the syringe barrel 11 is disposed inside the outer casing handle.

[0038] The top of the plunger 12 slides against the inner wall of the syringe barrel 11, allowing the top of the plunger 12 to slide up and down along the inner wall of the syringe barrel 11. The bottom of the plunger 12 passes through the plunger end cap 14 and is hinged to one end of the trigger 16 via a hinge 15, and the plunger 12 slides against the plunger end cap 14, allowing the plunger 12 to move up and down relative to the plunger end cap 14.

[0039] The plunger 12, plunger head 14, and inner wall of the syringe barrel 11 form a sealed cavity. The plunger spring 13 is sleeved on the outside of the plunger 12 located within the sealed cavity. The lower end of the plunger spring 13 abuts against the plunger head 14, and the upper end of the plunger spring 13 abuts against the stop at the top of the plunger 12. The top of the syringe barrel 11 communicates with the third end hole of the T-shaped fluid chamber 7. When the trigger 16 is pulled, the trigger 16 moves the plunger 12 downward, thereby compressing the plunger spring 13. At this time, the pressure inside the syringe barrel 11 decreases, and the solution enters the syringe barrel 11. When the trigger 16 is released, the compressed plunger spring 13 extends under the action of elastic force, thereby pushing the top of the plunger 12 upward. At this time, the solution inside the syringe barrel 11 is pushed out of the syringe barrel 11.

[0040] like Figure 3 As shown, the first one-way valve includes a one-way fluid chamber 2, a one-way plug 3, a first one-way valve spring 4, and a one-way plug nut 5. The one-way fluid chamber 2 is disposed within the outer shell cavity, and its inlet is connected to the first end hole of the T-shaped fluid chamber 7, while its outlet is connected to the dispensing nozzle 1. The one-way plug 3 is disposed within the one-way fluid chamber 2, with one end abutting against the outlet of the one-way fluid chamber 2 and the other end of the one-way plug 3 fitted with a one-way plug nut 5. The first one-way valve spring 4 is sleeved on the outside of the one-way plug 3, with one end of the first one-way valve spring 4 connected to the inner wall of the one-way fluid chamber 2 and the other end connected to the one-way plug nut 5.

[0041] like Figure 2 As shown, the second one-way valve includes a bottom one-way valve cover 26, a second one-way valve spring 27, a bottom one-way valve ball 28, a bottom one-way valve body 29, and a first locking nut 30. The bottom one-way valve body 29 is located at the bottom of the solution bottle 25. Both the bottom one-way valve ball 28 and the second one-way valve spring 27 are located inside the bottom one-way valve body 29. The bottom one-way valve ball 28 abuts against the liquid inlet at the bottom of the bottom one-way valve body 29, and the second one-way valve spring 27 is located above the bottom one-way valve ball 28. The bottom end of the bottom one-way valve cover 26 connects to the interior of the bottom one-way valve body 29, and the bottom end of the bottom one-way valve cover 26 abuts against the second one-way valve spring 27. The top end of the bottom one-way valve cover 26 connects to the solution tube 10. A first locking nut 30 and a washer are provided at the connection between the bottom one-way valve cover 26 and the solution tube 10 to seal the connection.

[0042] like Figure 4As shown, in this embodiment, a second locking nut 8 and a washer 9 are provided at the connection between the second end hole of the T-shaped fluid chamber 7 and the solution pipe 10 to seal the connection between the second end hole of the T-shaped fluid chamber 7 and the solution pipe 10 and prevent solution leakage.

[0043] like Figure 2 As shown, a cap 23 is provided on the top of the solution bottle 25, and the second through hole of the tee 21 passes through the cap 23 to connect to the interior of the solution bottle 25. A third locking nut 20 and a washer are provided at the connection between the solution tube 10 and the first through hole of the tee 21, and a fourth locking nut 24 is provided at the connection between the solution tube 10 and the second through hole of the tee 21.

[0044] The range adjustment assembly in this embodiment includes a locking member 17 and a range adjustment block 18. One end of the range adjustment block 18 is slidably connected to the outer casing 6, and one side of the other end of the range adjustment block 18 is slidably engaged with a scale 19. The locking member 17 is located on the other side of the range adjustment block 18. The scale 19 is mounted on the front of the outer casing, and the trigger 16 abuts against the range adjustment block 18 when released. The current range is determined by observing the position of the range adjustment block 18, and the minimum range unit of the scale 19 is 0.2 mL. Before each pipetting operation, the range adjustment block 18 is slid to the desired scale and locked by the locking member 17 to ensure accurate pipetting. The slidable connection of one end of the range adjustment block 18 to the outer casing 6 and the locking by the locking member 17 are existing technologies and will not be described further here.

[0045] In this embodiment, the liquid-contact part of the acid transfer device is made of polytetrafluoroethylene (PTFE), which can effectively resist corrosion from strong acids, strong alkalis, and strong oxidants, avoid contamination caused by prolonged contact with liquid, and has good heat insulation performance, thereby reducing volume errors. The liquid-contact part includes a dispensing nozzle 1, a one-way fluid chamber 2, a one-way plug 3, a first one-way valve spring 4, a one-way plug nut 5, a T-shaped fluid chamber 7, a second locking nut 8, various washers 9, a solution tube 10, a syringe barrel 11, a plunger 12, a plunger spring 13, a plunger end cap 14, a third locking nut 20, a three-way valve 21, a balloon valve 22, a bottle cap 23, a fourth locking nut 24, a solution bottle 25, a bottom one-way valve cap 26, a second one-way valve spring 27, a bottom one-way valve bead 28, a bottom one-way valve body 29, and a first locking nut 30.

[0046] The non-liquid contact parts of the acid transfer device are made of polyetheretherketone (PEEK), which is also effectively resistant to strong acid and alkali corrosion and has good wear resistance. The non-liquid contact parts include the housing 6, hinge 15, trigger 16, locking element 17, range adjustment block 18, and scale 19.

[0047] In this embodiment, the outer casing handle adopts an ergonomic design, making it easy to grip. The base is designed with a flat bottom, allowing for free placement and stable standing on a flat surface when not in use, effectively preventing leakage due to tipping. The range adjustment block 18 uses a sliding adjustment method, which is simple to adjust and easy to observe. Its simple and stable structure reduces maintenance and replacement costs. Furthermore, the minimum range of the scale 19 is 0.2 mL, calculated through mechanical motion (by the distance the plunger 12 moves up and down due to the rotation angle of the trigger 16), ensuring high accuracy and effectively reducing the frequency of periodic calibrations.

[0048] In this embodiment, the inlet portion of the solution bottle 25 is located below the liquid surface. This allows for both conventional solution pipetting operations and the pipetting of volatile solutions, foaming solutions, and high-viscosity solutions. Both the inlet and outlet portions of the acid pipette are sealed with one-way valves to effectively prevent backflow of liquid from the outer casing and contamination of the solution in the solution bottle 25.

[0049] In this embodiment, the fully corrosion-resistant continuous acid transfer device can perform continuous liquid transfer operations. When transferring equal volumes of liquid multiple times, the range adjustment block 18 can be adjusted once, and the trigger 16 can be pulled repeatedly to achieve uninterrupted continuous liquid transfer. Moreover, the overall sealing performance is good. The gun-shaped body and the solution bottle 25 are connected through the solution tube 10, which reduces the number of times the solution bottle 25 is opened and closed, effectively preventing the evaporation of the solution. In addition, the gaskets at the sealing points are made of expanded polytetrafluoroethylene material, which prevents leakage caused by corrosion of the gaskets.

[0050] The method of using this utility model includes the following steps:

[0051] Step A: Before performing the pipetting operation, slide the range adjustment block 18 to the desired scale and lock it with the locking element 17, and at the same time open the balloon valve 22 on the solution bottle 25.

[0052] Step B: Pick up the acid transfer device and pull the trigger 16. At this time, the plunger 12 moves downward to the lower limit of the stroke, the pressure inside the syringe barrel 11 decreases, and the plunger spring 13 is compressed.

[0053] Step C: Under the pressure inside the syringe barrel 11, the solution in the solution bottle 25 pushes the bottom one-way valve bead 28 upward, and at the same time compresses the second one-way valve spring 27 inside the solution bottle 25. The solution in the solution bottle 25 enters the valve body through the inlet of the bottom one-way valve body 29.

[0054] Step D: After the solution in the solution bottle 25 enters the bottom one-way valve body 29, it flows through the bottom one-way valve cover 26, the solution tube 10, the second end hole of the T-type fluid chamber 7, and the third end hole of the T-type fluid chamber 7 and continuously enters the syringe barrel 11.

[0055] In step E, as the solution continuously enters the syringe barrel 11, the second one-way valve spring 27 in the solution bottle 25 extends under the action of elasticity, pushing the bottom one-way valve bead 28 downward until it seals the liquid inlet of the bottom one-way valve body 29, thereby stopping the liquid inlet and disconnecting the bottom one-way valve body 29 from the liquid in the solution bottle 25. At this time, the solution fills the space inside the syringe barrel 11.

[0056] Step F: Align the dispensing nozzle 1 with the container to be dispensed, and then release the trigger 16. At this time, the plunger spring 13 extends under the action of elasticity, which drives the plunger 12 to move upward, and at the same time drives the trigger 16 to gradually return to the range limit.

[0057] In step G, when the plunger 12 moves upward, the solution in the syringe barrel 11 flows through the third end hole of the T-type fluid chamber 7 to the first end hole of the T-type fluid chamber 7, and then flows into the one-way fluid chamber 2.

[0058] In step H, under the action of liquid pressure, the solution pushes the one-way plug 3 in the one-way fluid chamber 2 forward, and at the same time drives the first one-way valve spring 4 to compress, and the solution in the acid transfer device flows through the dispensing nozzle 1 into the container to be transferred.

[0059] Step I: After the required volume of solution is discharged, the first one-way valve spring 4 extends and drives the one-way plug 3 to retract, sealing the outlet of the one-way fluid chamber 2. Finally, the balloon valve 22 on the solution bottle 25 is closed, thus completing one liquid transfer operation.

[0060] When performing multiple equal-volume pipetting operations, only the range adjustment block 18 needs to be adjusted once, and the trigger 16 can be pulled repeatedly to achieve uninterrupted continuous equal-volume pipetting.

[0061] The embodiments of this utility model are only used to illustrate the technical solutions of this utility model and are not intended to limit it. For those skilled in the art, it will be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A fully corrosion-proof continuous acid mover, characterized in that: The device includes a gun-shaped body and a solution bottle. The gun-shaped body comprises a shell, a T-shaped fluid chamber, a dispensing nozzle, an injection assembly, a trigger, and a scale. The T-shaped fluid chamber and the injection assembly are housed inside the shell, and a scale is located on the outside of the shell. A range adjustment assembly is slidably mounted on the scale. The first end of the T-shaped fluid chamber is connected to the dispensing nozzle via a first one-way valve. The second end of the T-shaped fluid chamber is connected to the solution in the solution bottle via a solution tube. The third end of the T-shaped fluid chamber is connected to the injection assembly. One end of the trigger is hinged to the power end of the injection assembly, and the other end of the trigger abuts against the range adjustment block assembly. A T-junction is located at the top of the solution bottle. The solution tube passes through the first and second through holes of the T-junction and extends into the solution inside the solution bottle. A balloon valve is located on the third through hole of the T-junction. A second one-way valve is located at the end of the solution tube that extends into the solution.

2. The fully corrosion-resistant continuous acid transfer device according to claim 1, characterized in that: The injection assembly includes a syringe barrel, a plunger, a plunger spring, and a plunger end cap disposed within a housing. The top of the plunger slides against the inner wall of the syringe barrel, and the bottom of the plunger passes through the plunger end cap and is hinged to a trigger. The plunger and the plunger end cap slide against each other. The plunger, the plunger end cap, and the inner wall of the syringe barrel form a sealed cavity. The plunger spring is sleeved on the outside of the plunger located within the sealed cavity. The top of the syringe barrel communicates with the third end hole of the T-shaped fluid chamber.

3. The fully corrosion-resistant continuous acid transfer device according to claim 1, characterized in that: The first one-way valve includes a one-way fluid chamber, a one-way plug, a first one-way valve spring, and a one-way plug nut. The one-way fluid chamber is disposed inside the outer shell, and the inlet of the one-way fluid chamber is connected to the first end hole of the T-shaped fluid chamber, and the outlet of the one-way fluid chamber is connected to the dispensing nozzle. A one-way plug is provided inside the one-way fluid chamber, one end of the one-way plug abuts against the outlet of the one-way fluid chamber, and a one-way plug nut is provided at the other end of the one-way plug. The first one-way valve spring is sleeved on the outside of the one-way plug, and one end of the first one-way valve spring is connected to the inner wall of the one-way fluid chamber, and the other end of the first one-way valve spring is connected to the one-way plug nut.

4. The fully corrosion-resistant continuous acid transfer device according to claim 1, characterized in that: The second one-way valve includes a bottom one-way valve cover, a second one-way valve spring, a bottom one-way valve ball, a bottom one-way valve body, and a first locking nut. The bottom one-way valve body is located at the bottom of the solution bottle. The bottom one-way valve ball and the second one-way valve spring are both located inside the bottom one-way valve body. The bottom one-way valve ball abuts against the liquid inlet at the bottom of the bottom one-way valve body, and the second one-way valve spring is located above the bottom one-way valve ball. The bottom end of the bottom one-way valve cover communicates with the interior of the bottom one-way valve body, and the bottom end of the bottom one-way valve cover abuts against the second one-way valve spring. The top end of the bottom one-way valve cover communicates with the solution tube. A first locking nut is located at the connection between the bottom one-way valve cover and the solution tube.

5. The fully corrosion-resistant continuous acid transfer device according to claim 1, characterized in that: A second locking nut is provided at the connection point between the second end hole of the T-shaped fluid chamber and the solution tube.

6. The fully corrosion-resistant continuous acid transfer device according to claim 1, characterized in that: The solution bottle is equipped with a cap at the top, and the second through hole of the three-way valve passes through the cap to connect to the interior of the solution bottle.

7. The fully corrosion-resistant continuous acid transfer device according to claim 1, characterized in that: The range adjustment assembly includes a locking element and a range adjustment block. One end of the range adjustment block is slidably connected to the outer casing, and one side of the other end of the range adjustment block is slidably engaged with a scale. The locking element is located on the other side of the range adjustment block.

8. The fully corrosion-resistant continuous acid transfer device according to claim 1, characterized in that: The outer casing includes an outer casing body and a base, with the bottom of the outer casing body connected to the base.

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