A quantitative bottle for rapid weighing of potassium hydrogen phthalate with a fixed mass standard

Abstract

This utility model discloses a quantitative bottle for rapid weighing of potassium hydrogen phthalate with a fixed mass standard, belonging to the field of propellant analysis technology. It includes: a bottle body for containing powdered reagents; a cap connected to the bottle body's opening via threads; a control plate rotatably mounted on the upper surface of the cap, having multiple circumferentially distributed outlets of different sizes; and a slider radially slidable within the cap and in contact with the bottom surface of the control plate, the slider having multiple through-holes, each with a volume corresponding to a different standard weighing value. The rotation of the control plate switches the outlet combination state, allowing selective alignment of the multiple through-holes with the outlets during a single slide of the slider. This quantitative bottle for rapid weighing of potassium hydrogen phthalate with a fixed mass standard allows for various arrangements and combinations of the multiple through-holes and outlets, fulfilling diverse quantitative requirements.

Description

Technical Field

[0001] This invention belongs to the field of propellant analysis technology, and particularly relates to a quantitative bottle for rapid weighing of potassium hydrogen phthalate with a fixed mass standard. Background Technology

[0002] Potassium hydrogen phthalate is commonly used in the standardization of alkaline standard titration solutions. GB / T601 stipulates that the standardization of standard titration solutions requires at least two parallel tests and multiple weighings of a fixed mass of dried potassium hydrogen phthalate. However, both fixed-mass and subtractive weighing methods require that if the weighing deviation is too large, the taken-out sample should be discarded and not put back into the reagent bottle. In actual operation, the efficiency and accuracy of weighing are easily affected by static electricity and the operator's skill level, which can easily lead to waste of reagents.

[0003] Currently, existing salt control bottles on the market are devices for rapid quantitative dispensing of sodium chloride table salt. However, these bottles typically only have one dispensing port, usually dispensing 0.5 grams of table salt at a time. This dispensing chamber is not suitable for the reference standard potassium hydrogen phthalate. Furthermore, in propellant testing, multiple items use potassium hydrogen phthalate for calibration, and the mass values ​​are not unique. A single dispensing chamber cannot meet the work requirements. Automated weighing equipment commonly used in the laboratory achieves linkage control between the feeding mechanism and the electronic balance through a workstation. Although it has the function of customizing the weighing mass and has good scalability, it is expensive, difficult to directly apply to existing electronic balances, and has a slow weighing speed.

[0004] In view of this, this paper studies and improves upon existing problems, and provides a quantitative bottle for rapid weighing of potassium hydrogen phthalate as a reference. It is mainly based on multi-mode quantitative weighing and can be applied to the calibration process of various alkaline standard solutions. It has the advantages of reasonable structure, simple operation, high weighing efficiency and low reagent waste. The aim is to solve the problem and improve the practical value through the quantitative bottle. Utility Model Content

[0005] The purpose of this invention is to solve the problem that the efficiency and accuracy of weighing potassium hydrogen phthalate as a reference standard are easily affected by static electricity and the operator's skill level, which can easily lead to waste of medicine. Therefore, this invention proposes a quantitative bottle for rapid weighing of potassium hydrogen phthalate as a fixed mass reference.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A quantitative bottle for rapid weighing of potassium hydrogen phthalate with a fixed mass standard, comprising:

[0008] The bottle body is used to hold powdered reagents;

[0009] The bottle cap is attached to the bottle opening via threads.

[0010] The control panel is rotatably mounted on the upper surface of the bottle cap and has multiple circumferentially distributed discharge ports of different sizes.

[0011] A slider is radially slidably disposed inside the bottle cap and attached to the bottom surface of the control panel. Multiple quantitative holes are opened through the slider, and the volume of each quantitative hole corresponds to a different standard weighing value.

[0012] The control panel can switch the discharge combination state of the discharge port by rotating it, so that when the slider slides once, multiple metering holes are selectively aligned with the discharge port.

[0013] Preferably, there are three quantitative orifices, namely a first quantitative orifice, a second quantitative orifice, and a third quantitative orifice, with nominal masses of 0.15g, 0.3g, and 0.6g, respectively.

[0014] Preferably, the discharge port has four outlets, and each outlet, when combined with the metering orifice, includes the following combination modes for discharging material:

[0015] First mode: Only the second metering orifice is exposed, while the first and third metering orifices are obscured;

[0016] Second mode: Only the third metering orifice is exposed, while the first and second metering orifices are obscured;

[0017] Third mode: Simultaneously expose the first and third metering orifices, while shielding the second metering orifice;

[0018] Fourth mode: Simultaneously expose the second and third metering orifices while shielding the first metering orifice.

[0019] Preferably, the upper surface of the bottle cap has a sliding cavity, and the lower surface has a feed inlet communicating with the sliding cavity and capable of covering all the metering holes. The slider is slidably disposed in the sliding cavity, and a drive rod extends outward from the slider. A mounting cavity is formed on the side of the sliding cavity, and a spring is disposed in the mounting cavity that abuts against the side wall of the slider, so that the slider has a first state and a second state in the sliding cavity, wherein:

[0020] First state: The metering orifice corresponds to the feed inlet and is misaligned with the discharge outlet;

[0021] The second state: the metering orifice corresponds to the outlet and is misaligned with the inlet.

[0022] Preferably, a damping mechanism is provided between the control panel and the bottle cap to maintain the original state of the control panel under the action of no external force.

[0023] Preferably, the top of the control panel is hinged with a cover plate, the movable end of the cover plate is provided with a locking block, and the control panel is provided with a locking slot that matches the locking block.

[0024] In summary, the technical effects and advantages of this utility model are as follows: In the field of propellant testing, many items involve the calibration process of alkaline standard solutions. The multiple quantitative orifices and multiple discharge ports of this quantitative bottle can be arranged and combined in various ways to meet diverse quantitative needs, fully covering these items in propellant testing. Operators can easily select the appropriate discharge combination according to specific project requirements, eliminating the hassle of weighing different items and greatly improving the efficiency of testing work.

[0025] Traditional weighing methods require multiple weighing operations using a balance, a cumbersome process easily affected by external factors. This quantitative bottle, however, simply requires inverting the bottle to allow the material inside to enter the metering orifice. Pressing the slider allows the orifice to move with the material until it aligns with the discharge port, at which point the material is discharged. The entire operation is simple and easy to understand, requiring no complex training for specialized personnel, significantly reducing operational difficulty. By rotating the control panel to switch the discharge port's combination and by sliding the slider, different standard weighing values ​​can be discharged in a short time. A single operation yields the required mass of potassium hydrogen phthalate, avoiding the tedious steps of multiple weighings, significantly improving weighing speed, and saving valuable time, making it particularly suitable for time-sensitive laboratory work scenarios. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the structure of the bottle cap in this utility model;

[0028] Figure 3 This is a schematic diagram of the slider structure in this utility model;

[0029] Figure 4 This is a schematic diagram of the control board in this utility model;

[0030] Figure 5 This is a schematic diagram of the slider of this utility model in its first state;

[0031] Figure 6 This is a schematic diagram of the slider of this utility model in its second state;

[0032] Figure 7 This is a schematic diagram of the structure of the present invention with the discharge port in the first mode;

[0033] Figure 8 This is a schematic diagram of the structure of the present invention with the discharge port in the second mode;

[0034] Figure 9 This is a schematic diagram of the structure of the discharge port of this utility model in the third mode;

[0035] Figure 10 This is a schematic diagram of the structure of the discharge port of this utility model in the fourth mode.

[0036] In the diagram: 1. Bottle body; 2. Bottle cap; 21. Inlet; 22. Spring; 3. Control panel; 31. Outlet; 4. Slider; 41. Metering hole; 411. First metering hole; 412. Second metering hole; 413. Third metering hole; 42. Drive rod; 5. Cover plate. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0038] Reference Figure 1-6 A quantitative bottle for rapid weighing of potassium hydrogen phthalate with a fixed mass standard includes a bottle body 1, a bottle cap 2, a control panel 3, and a slider 4.

[0039] Bottle body 1 is the main container of the entire quantitative bottle, used to hold the standard potassium hydrogen phthalate powder reagent. Bottle cap 2 is connected to the bottle mouth of bottle body 1 by thread, and is kept sealed under normal conditions to prevent external moisture, dust and other impurities from entering bottle body 1.

[0040] The control plate 3 is rotatably mounted on the upper surface of the bottle cap 2. It has multiple circumferentially distributed discharge ports 31 of different sizes. Rotating the control plate 3 can control the position of the discharge ports 31. A damping is provided between the control plate 3 and the bottle cap 2 so that the control plate 3 maintains its original state under the action of no external force. Through the damping between the control plate 3 and the bottle cap 2, the control plate 3 can be kept stable after the position is adjusted.

[0041] The slider 4 is radially slidably disposed inside the bottle cap 2 and is attached to the bottom surface of the control plate 3. Multiple metering holes 41 are provided through the slider 4. Since the slider 4 is attached to the top surface of the bottle cap 2, the metering holes 41 are closed by the control plate 3 during the sliding process of the slider 4. The metering holes 41 are only open when they move to coincide with the discharge port 31. The volume of each metering hole 41 corresponds to a different standard weighing value. The metering holes 41 with different volumes can meet different standard weighing requirements. Since the volume of the metering holes 41 is different, the amount of material required to fill the metering holes 41 is also different. By designing the standard volume, the standard weighing value can be obtained.

[0042] Reference Figure 1-6The upper surface of the bottle cap 2 is provided with a sliding cavity, and the lower surface is provided with a feed inlet 21 that communicates with the sliding cavity and can cover all the metering holes 41. Under normal conditions, the feed inlet 21 and the metering holes 41 are aligned. When the metering bottle is inverted, the material in the bottle body 1 enters the metering holes 41 under the action of gravity. Since the feed inlet 21 covers all the metering holes 41, all the metering holes 41 are filled with material. The slider 4 is slidably disposed in the sliding cavity. The slider 4 has a drive rod 42 extending outward. The drive rod 42 drives the slider 4 to move. After the slider 4 moves to a different position, the position changes. After the metering holes 41 and the feed inlet 21 are misaligned, the material cannot enter the metering holes 41.

[0043] A mounting cavity is provided on the side of the slide cavity, and a spring 22 is installed inside the mounting cavity to abut against the side wall of the slider 4, so that the slider 4 has a first state and a second state within the slide cavity. The spring 22 is a compression spring, and under the action of the spring 22, the slider 4 is compressed into the first state, wherein:

[0044] Reference Figure 5 First state: The metering hole 41 corresponds to the feed inlet 21 and is misaligned with the discharge outlet 31. In this state, the material enters the metering hole 41 from the bottle body 1, and the material in the metering hole 41 cannot be discharged from the discharge outlet 31.

[0045] Reference Figure 6 Second state: The metering hole 41 corresponds to the discharge port 31 and is misaligned with the feed port 21. In this state, the material in the metering hole 41 can be discharged from the discharge port 31. However, due to the misalignment between the metering hole 41 and the feed port 21, the material cannot enter the metering hole 41. Under the action of the spring 22, the slider 4 can automatically reset after each press of the drive rod 42. The single reciprocating stroke of the slider 4 completes one metering discharge.

[0046] Reference Figure 3 In this embodiment, there are three quantitative orifices 41, namely the first quantitative orifice 411, the second quantitative orifice 412 and the third quantitative orifice 413, with nominal masses of 0.15g, 0.3g and 0.6g, respectively.

[0047] During propellant testing, multiple items are calibrated using potassium hydrogen phthalate, and the mass number is not unique. To meet the work requirements, the rotation of the control plate 3 can switch the discharge combination state of the discharge port 31, so that when the slider 4 slides once, multiple quantitative holes 41 are selectively aligned with the discharge port 31 to achieve different combination discharge methods.

[0048] Common applications of potassium hydrogen phthalate for standardization include: GB / T601 "Preparation of Standard Titration Solutions for Chemical Reagents" requires 0.75g for the standardization of 0.1mol / L NaOH standard titration solution; SH / T0079 "Preparation Method of Reagent Solutions for Petroleum Product Testing" requires 0.3g for the standardization of 0.05mol / L KOH ethanol standard titration solution and 0.6g for the standardization of 0.1mol / L KOH ethanol standard titration solution; and GJB9090 "Single-Push-3 Specification" requires 0.9g for the standardization of 0.15mol / L NaOH standard titration solution.

[0049] Reference Figure 7-10 In this embodiment, there are four discharge ports 31, and each discharge port 31, when used in conjunction with the metering orifice 41, includes the following combination modes for discharging material:

[0050] First mode: Only the second metering orifice 412 is exposed, while the first metering orifice 411 and the third metering orifice 413 are covered;

[0051] Second mode: Only the third metering orifice 413 is exposed, while the first metering orifice 411 and the second metering orifice 412 are covered;

[0052] Third mode: Simultaneously expose the first metering orifice 411 and the third metering orifice 413, while shielding the second metering orifice 412;

[0053] Fourth mode: Simultaneously expose the second metering orifice 412 and the third metering orifice 413, while shielding the first metering orifice 411;

[0054] Standard quality output is achieved through the following steps:

[0055] Reference Figure 7 Rotate the control panel 3 to the first mode, expose the second quantitative orifice 412 with a calibration amount of 0.3g, and press the slider 4 once to output 0.3g of calibration, which meets the requirement of 0.3g for the calibration of 0.05mol / L KOH ethanol standard titration solution in SH / T0079 "Preparation Method of Reagent Solution for Petroleum Product Testing".

[0056] Reference Figure 8 Rotate the control panel 3 to the second mode to expose the third quantitative orifice 413 with a standardization amount of 0.6g. Press the slider 4 once to output 0.6g, which is consistent with the requirement of 0.6g for standardization of 0.1mol / L KOH ethanol standard titration solution.

[0057] Reference Figure 9Rotate the control panel 3 to the third mode, simultaneously exposing the first quantitative orifice 411 with a standardization amount of 0.15g and the third quantitative orifice 413 with a standardization amount of 0.6g. Press the slider 4 once to output 0.15g and 0.6g, which combine to form 0.75g. According to GB / T601 "Preparation of Standard Titration Solutions for Chemical Reagents", the standardization of 0.1mol / L NaOH standard titration solution requires 0.75g.

[0058] Reference Figure 10 Rotate the control panel from mode 3 to mode 4, simultaneously exposing the second quantitative orifice 412 with a standardization amount of 0.3g and the third quantitative orifice 413 with a standardization amount of 0.6g. Pressing the slider 4 once outputs 0.3g and 0.6g, which together form 0.9g, conforming to the requirement of 0.9g for the standardization of 0.15mol / L NaOH standard titration solution in GJB9090 "Single Push-3 Specification".

[0059] The above is only a preferred embodiment of the present utility model. Different calibration requirements can also be formed by setting different quantitative holes 41 and different numbers of quantitative holes 41 and discharge ports 31. Furthermore, a larger calibration requirement can be obtained by performing multiple press calibrations. For example, in this embodiment, the fourth mode is adopted, and a calibration output of 1.8g can be achieved by pressing the discharge port twice in a row.

[0060] Reference Figure 1 The control panel 3 is hinged to a cover plate 5 at the top. The movable end of the cover plate 5 is provided with a locking block. The control panel 3 has a locking groove that matches the locking block. The function of the cover plate 5 is to cover the outlet 31 when the quantitative bottle is not in use, so as to prevent external impurities from entering the bottle and contaminating the reagent. When the quantitative bottle needs to be used, the cover plate 5 is opened to separate the locking block from the locking groove. After use, the cover plate 5 is closed again, and the locking block is inserted into the locking groove to fix the cover plate 5. The locking block and the cover plate 5 are integrally molded plastic parts. The locking block itself can undergo a small range of elastic deformation to engage with the locking groove.

[0061] The working principle of this utility model is as follows:

[0062] According to the required mass quantity for different calibration items, the rotary control plate 3 switches the discharge combination state of the discharge port 31 so that when the slider 4 slides once, multiple quantitative holes 41 are selectively aligned with the discharge port 31, and a suitable combination mode is selected.

[0063] The specific mode is as follows:

[0064] First mode: Only the second quantitative well 412 with a standardization amount of 0.3g is exposed, while the first quantitative well 411 and the third quantitative well 413 are blocked. This mode is suitable for standardizing 0.3g of the 0.05mol / L KOH ethanol standard titration solution in SH / T0079.

[0065] Second mode: Only the third quantitative well 413 with a standardization amount of 0.6g is exposed, while the first quantitative well 411 and the second quantitative well 412 are blocked. This mode is suitable for standardizing 0.6g of 0.1mol / L KOH ethanol standard titration solution.

[0066] The third mode: simultaneously exposes the first quantitative well 411 with a standardization amount of 0.15g and the third quantitative well 413 with a standardization amount of 0.6g, while shielding the second quantitative well 412, forming a total of 0.75g, which is suitable for the standardization of 0.1mol / L NaOH standard titration solution in GB / T601, which requires 0.75g.

[0067] Fourth mode: Simultaneously expose the second quantitative well 412 with a standardization amount of 0.3g and the third quantitative well 413 with a standardization amount of 0.6g, while shielding the first quantitative well 411, to form 0.9g, which is suitable for the standardization of 0.15mol / L NaOH standard titration solution in GJB9090, which requires 0.9g.

[0068] Initially, the slider 4 is in the first state under the action of the spring 22, that is, the metering orifice 41 corresponds to the feed inlet 21 and is misaligned with the discharge outlet 31 opened on the control plate 3. The material cannot be discharged from the discharge outlet 31. When the metering bottle is inverted, the potassium hydrogen phthalate powder reagent in the bottle body 1 enters multiple metering orifices 41 through the feed inlet 21 under the action of gravity until all metering orifices 41 are filled with material.

[0069] By pressing the drive rod 42, the slider 4 slides in the slide cavity, overcoming the elastic force of the spring 22, and the slider 4 changes from the first state to the second state, that is, the metering hole 41 corresponds to the discharge port 31 and is misaligned with the feed port 21. At this time, the material in the metering hole 41 can be discharged from the discharge port 31, completing one discharge. After releasing the drive rod 42, the slider 4 automatically returns to the first state under the action of the spring 22.

[0070] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A quantitative bottle for rapid weighing of potassium hydrogen phthalate with a fixed mass standard, characterized in that, The device includes a bottle body (1) for containing powdered reagents. The bottle body (1) is threadedly connected to a bottle cap (2). A control plate (3) is rotatably mounted on the upper surface of the bottle cap (2). The control plate (3) has multiple circumferentially distributed outlets (31) of different sizes. A slider (4) is slidably arranged inside the bottle cap (2). The slider (4) is in contact with the bottom surface of the control plate (3). Multiple quantitative holes (41) are opened through the slider (4). The volume of each quantitative hole (41) corresponds to a different standard weighing value. The rotation of the control plate (3) can switch the discharge combination state of the outlets (31), so that when the slider (4) slides once, the multiple quantitative holes (41) and the outlets (31) are selectively aligned.

2. A quantitative bottle for rapid weighing of potassium hydrogen phthalate with a fixed mass standard according to claim 1, characterized in that, The quantitative wells (41) are configured as three, namely the first quantitative well (411), the second quantitative well (412) and the third quantitative well (413), with nominal masses of 0.15g, 0.3g and 0.6g respectively.

3. A quantitative bottle for rapid weighing of potassium hydrogen phthalate with a fixed mass standard according to claim 2, characterized in that, The discharge port (31) has four parts, and each discharge port (31) is combined with the metering orifice (41) to discharge material in the following configurations: First mode: Only the second metering orifice (412) is exposed, while the first metering orifice (411) and the third metering orifice (413) are covered. Second mode: Only the third metering orifice (413) is exposed, while the first metering orifice (411) and the second metering orifice (412) are covered. Third mode: Simultaneously expose the first metering orifice (411) and the third metering orifice (413), and shield the second metering orifice (412). Fourth mode: Simultaneously expose the second metering orifice (412) and the third metering orifice (413), while shielding the first metering orifice (411).

4. A quantitative bottle for rapid weighing of potassium hydrogen phthalate with a fixed mass standard according to claim 1, characterized in that, The bottle cap (2) has a sliding cavity on its upper inner surface and a feed inlet (21) on its lower inner surface that communicates with the sliding cavity and covers all the metering holes (41). The slider (4) is slidably disposed in the sliding cavity. A drive rod (42) extends outward from the slider (4). An installation cavity is provided on the side of the sliding cavity. A spring (22) is provided in the installation cavity that abuts against the side wall of the slider (4), so that the slider (4) has a first state and a second state in the sliding cavity, wherein: First state: The metering orifice (41) corresponds to the feed inlet (21) and is misaligned with the discharge outlet (31); The second state: the metering orifice (41) corresponds to the outlet (31) and is misaligned with the inlet (21).

5. A quantitative bottle for rapid weighing of potassium hydrogen phthalate with a fixed mass standard according to claim 1, characterized in that, A damping device is provided between the control plate (3) and the bottle cap (2) so that the control plate (3) maintains its original state under non-external force.

6. A quantitative bottle for rapid weighing of potassium hydrogen phthalate with a fixed mass standard according to claim 1, characterized in that, The top of the control board (3) is hinged to a cover plate (5), and the movable end of the cover plate (5) is provided with a locking block. The control board (3) is provided with a slot that matches the locking block.

Images