Micro-weighing spoon

Abstract

The utility model discloses a trace weighing spoon, including spoon shell body, spoon head subassembly and push rod subassembly, the spoon shell body is equipped with spoon shell handle, still includes bottom shell, connecting body, be equipped with annular fixed groove on the connecting body surface, be equipped with circular excavated hole on the bottom shell surface, the spoon head subassembly is equipped with conical pipe body, still includes material guide nozzle, circular hollow insertion part, be equipped with annular fixed block on the circular hollow insertion part inner surface, the push rod subassembly is by snap ring, limit block, press to hold, push rod nozzle constitution, the spring strip is covered outside the push rod subassembly. The utility model discloses can replace spoon head subassembly fast, especially suitable for the scene of multiple weighing various powdery chemical reagent, reduces the repeated cleaning to spoon head, has improved the experiment efficiency, and the design of spoon head subassembly front conical pipe body can effectively dig the trace reagent and prevent spilling.

Description

Technical Field

[0001] This utility model relates to the field of experimental equipment auxiliary tools, specifically a micro-weighing spoon. Background Technology

[0002] In analytical chemistry experiments, it is necessary to weigh various trace amounts of powdered chemical reagents. Currently, the weighing spoons used in experiments are mainly composed of an integrated handle and spoon body. Although they are made of easy-to-clean stainless steel, the spoon head inevitably gets contaminated with the reagent after weighing it. This contamination is unavoidable when weighing other reagents, and repeated cleaning is very inconvenient. Disposable weighing spoons are too expensive. Moreover, most weighing spoons have a flat head, which not only increases the contact area with the original reagent when scooping it out, causing contamination of the reagent in the original bottle, but also makes it easy for powdered reagents to spill during the transfer process due to shaking and wind. This not only results in the loss of reagents but also pollutes the environment.

[0003] To address the aforementioned issues, a micro-weighing spoon is urgently needed for public disclosure. Utility Model Content

[0004] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a micro-weighing spoon, including a spoon shell, a spoon head assembly, and a push rod assembly; the spoon shell has an elliptical spoon handle at its tail end, a cylindrical connector is connected to the front end of the spoon handle, an annular fixing groove is provided on the surface of the connector, and a limit clip is provided at the front end of the connector; the spoon shell and the spoon head assembly are connected by a snap-fit; the push rod assembly is a long cylindrical shape and is disposed inside the spoon shell.

[0005] Furthermore, a bottom shell is installed at the tail end of the spoon shell; a circular hole is provided on the surface of the bottom shell.

[0006] Furthermore, the front part of the spoon head assembly is a conical tube; a guide nozzle is provided on the left side of the conical tube; a cylindrical hollow insertion part is provided at the rear of the spoon head assembly; and an annular fixing block is provided on the inner surface of the cylindrical hollow insertion part.

[0007] Furthermore, a retaining ring is provided at the front of the push rod assembly; a limiting block is provided at the rear of the push rod assembly; a cylindrical pusher is connected to the tail of the limiting block; and a push rod nozzle is provided at the front of the push rod assembly.

[0008] Furthermore, a spring strip is fitted on the outer side of the push rod assembly.

[0009] The advantages of the utility model compared to the prior art are:

[0010] First, the head of the weighing spoon is a conical tube. After scooping up powdered chemicals, the medicine sinks to the bottom due to gravity, which can prevent the medicine from being spilled due to shaking or wind.

[0011] Secondly, the weighing spoon has a small head and small capacity, which reduces contact with the powdered chemicals in the original reagent bottle and allows for precise control of trace amounts.

[0012] Third, the spoon head is made of replaceable disposable polypropylene material. After being sterilized by high-temperature steam, it can completely avoid cross-contamination of reagents and repeated rinsing and drying of the spoon head when facing high-requirement experiments.

[0013] Fourth, the weighing spoon is equipped with a push rod assembly. In experiments that require weighing large quantities of different reagents, the spoon head assembly can be popped out by quickly pressing the push rod, and a new, clean spoon head assembly can be installed at the same time, which greatly saves the operator's operating time. Attached Figure Description

[0014] Figure 1 A three-dimensional structural diagram of a micro-weighing spoon provided in Embodiment 1 of this utility model;

[0015] Figure 2 Right view of a micro-weighing spoon provided in Embodiment 1 of this utility model;

[0016] Figure 3 This is a schematic plan view of the internal structure of a micro-weighing spoon provided in Embodiment 1 of the present utility model;

[0017] Figure 4 for Figure 3 Enlarged structural diagram of Part A;

[0018] Figure 5 This is a schematic diagram of the structure of a micro-weighing spoon head assembly according to the present invention;

[0019] Figure 6 This is a schematic diagram of the structure of a micro-weighing spoon push rod assembly according to the present invention;

[0020] Figure 7 A three-dimensional structural diagram of a micro-weighing spoon provided in Embodiment 2 of this utility model;

[0021] Figure 8 This is a perspective three-dimensional structural diagram of the shell of a micro-weighing spoon provided in Embodiment 2 of this utility model;

[0022] Figure 9 This is a perspective exploded view of the assembly structure of the shell of a micro-weighing spoon provided in Embodiment 2 of this utility model;

[0023] Figure 10This is another exploded view of the shell assembly of a micro-weighing spoon provided in Embodiment 2 of this utility model;

[0024] Figure 11 for Figure 10 Enlarged structural diagram of part B.

[0025] Among them, 1-spoon shell, 101-spoon handle, 102-connector, 103-annular fixing groove, 104-limiting clip, 105-bottom shell, 106-circular hole, 2-spoon head assembly, 201-conical tube, 202-guide nozzle, 203-cylindrical hollow insertion part, 204-annular fixing block, 3-push rod assembly, 301-ring, 302-limiting block, 303-press holder, 304-push rod nozzle, 4-spring strip. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings of this embodiment.

[0027] The present invention will be described in detail with reference to the accompanying drawings.

[0028] Please see Figure 1-11 In a specific implementation, this utility model provides a micro-weighing spoon, including a spoon shell 1, a spoon head assembly 2, and a push rod assembly 3. The spoon shell 1 and the spoon head assembly 2 can be connected and disassembled by snap-fit. A long cylindrical push rod assembly 3 is provided inside the spoon shell 1, which can be inserted through the rear of the spoon shell 1.

[0029] like Figure 7 As shown, the spoon shell 1 has an elliptical spoon handle 101 at its tail, allowing the experimenter to grip the handle 101 to scoop up chemicals; a cylindrical connector 102 is connected to the front end of the handle 101; an annular fixing groove 103 is provided on the surface of the connector 102; and a limit card 104 is provided at the front end of the connector 102 to limit the maximum range of movement of the push rod assembly 3.

[0030] like Figure 2 and 3 As shown, a bottom shell 105 is installed at the tail end of the spoon shell 1 to seal the spoon shell 1; a circular hole 106 is provided on the surface of the bottom shell 105 to facilitate the extension of the end of the push rod assembly 3 while restricting the position of the push rod assembly 3.

[0031] like Figure 4 and 5As shown, the front of the spoon assembly 2 is a conical tube 201, which allows the scooped powdery chemicals to settle to the bottom due to gravity, while preventing spillage. A guide nozzle 202 is provided on the left side of the conical tube 201 to guide the direction of the powdery chemicals when pouring. A cylindrical hollow insertion part 203 is connected to the tail of the spoon assembly 2. An annular fixing block 204 is provided on the inner surface of the cylindrical hollow insertion part 203. The annular fixing block 204 and the annular fixing groove 103 are fixed to the surface of the front connecting body 102 of the spoon shell 1 by snap-fit ​​connection.

[0032] like Figure 6 As shown, a retaining ring 301 is provided at the front of the push rod assembly 3; a limiting block 302 is provided at the rear of the push rod assembly 3; a cylindrical pusher 303 is connected to the tail of the limiting block 302; and a push rod nozzle 304 is provided at the front of the push rod assembly 3.

[0033] like Figure 10 and 11 As shown, a spring strip 4 is sleeved on the outside of the push rod assembly 3.

[0034] Example 1:

[0035] When using a micro-weighing spoon to scoop powdered reagents for the first time, the operating steps are as follows:

[0036] Align the cylindrical hollow insertion part 203 of the spoon head assembly 2 with the connecting body 102 at the front of the spoon shell 1. After alignment, slide the annular fixing block 204 on the inner surface of the cylindrical hollow insertion part 203 into the circular hole 106 to achieve a snap-fit ​​connection. The experimenter holds the handle 101 of the spoon shell and inserts the spoon head assembly 2 of the micro-weighing spoon into the reagent bottle to scoop out an appropriate amount of powdered chemical. After transferring it to the target position, tilt the micro-weighing spoon to the left to pour out the powdered chemical along the guide nozzle 202, thereby completing the scooping and transfer of the reagent.

[0037] Example 2:

[0038] When changing the reagent to be weighed and simultaneously changing the spoon head assembly, the operating steps are as follows:

[0039] Pressing the push rod assembly 3 at the tail of the push rod assembly 3 causes the push rod assembly 3 to slide forward. The spring bar 4, which is clamped between the retaining ring 301 and the limiting card 104, is compressed and subjected to force. At the same time, the push rod nozzle 304 extends forward and presses against the outer wall of the spoon head assembly 2. The annular fixing block 204 disengages from the annular fixing groove 103, and the spoon head assembly 2 disengages from the spoon shell 1. Releasing the pressure on the push rod assembly 3 reduces the force on the spring bar 4, causing it to rebound. The push rod nozzle 304 retracts. When the limiting block 302 at the tail of the push rod assembly 3 touches the bottom shell 105, the push rod assembly 3 stops displacing and returns to its original position.

[0040] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A micro-weighing spoon, characterized in that: It includes a spoon shell (1), a spoon head assembly (2), and a push rod assembly (3); the spoon shell (1) is provided with an elliptical spoon handle (101) at the tail end, and a cylindrical connector (102) is connected to the front end of the spoon handle (101). An annular fixing groove (103) is provided on the surface of the connector (102), and a limit clip (104) is provided at the front end of the connector (102); the spoon shell (1) and the spoon head assembly (2) are connected by a snap fastener; the push rod assembly (3) is a long cylindrical shape and is located inside the spoon shell (1).

2. The micro-weighing spoon according to claim 1, characterized in that: The spoon shell (1) is fitted with a bottom shell (105) at its tail end; a circular hole (106) is provided on the surface of the bottom shell (105).

3. The micro-weighing spoon according to claim 1, characterized in that: The front part of the spoon head assembly (2) is a conical tube (201); a guide nozzle (202) is provided on the left side of the conical tube (201); a cylindrical hollow insertion part (203) is connected to the tail of the spoon head assembly (2); an annular fixing block (204) is provided on the inner surface of the cylindrical hollow insertion part (203).

4. A micro-weighing spoon according to claim 1, characterized in that: The push rod assembly (3) is provided with a retaining ring (301) at the front; a limiting block (302) is provided at the rear of the push rod assembly (3); a cylindrical pusher (303) is connected to the tail of the limiting block (302); and a push rod nozzle (304) is provided at the front end of the push rod assembly (3).

5. A micro-weighing spoon according to claim 4, characterized in that: The push rod assembly (3) is fitted with a spring strip (4) on its outer side.

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