Anti-adhesion powder weighing scoop with self-oscillation structure

Abstract

The utility model relates to a kind of anti-adhesion powder weighing spoon with self-shock structure, belong to precision weighing appliance technical field, and the spoon handle of spoon body is provided with shock assembly, and shock assembly includes: rocker, rocker one end is installed on spoon handle, and the other end of rocker is provided with hammer, and rocker is rotated or deformed relative to spoon handle to make hammer impact spoon handle.The weighing spoon of the application realizes controllable and efficient compound vibration mode by the collaborative design of shock assembly, and completely conquers the core pain point of traditional weighing tool.Rocker drives the hammer of metal ball or metal block material to accurately impact hitting part, generates powerful initial vibration, cooperates with the high-frequency attenuation oscillation driven by first return spring and second return spring, forms the compound effect of "powerful impact+continuous micro-vibration", can quickly break the stubborn adhesion of trace powder due to electrostatic adsorption, surface tension, and can also avoid the residual problem caused by insufficient single vibration intensity.

Description

Technical Field

[0001] This utility model belongs to the technical field of precision weighing instruments, and in particular relates to an anti-adhesion powder weighing spoon with a self-oscillating structure. Background Technology

[0002] In chemical experiments, pharmaceutical preparation, and food processing, it is often necessary to accurately weigh trace amounts of powder samples. Operators typically use traditional stainless steel or plastic spoons to scoop the powder and transfer it to a weighing boat or container. However, many dry powders (especially organic compound solid powders) stubbornly adhere to the inner wall of the spoon due to electrostatic adsorption or surface tension. To completely transfer the powder, the operator must generate vibration by flicking, tapping the wrist holding the spoon, or forcefully striking the handle. This method has significant drawbacks: the vibration intensity is difficult to control precisely; too little force fails to dislodge the adhered powder, while too much force easily causes the powder to splash out of the weighing boat, resulting in sample loss, inaccurate weighing, cross-contamination, and a contaminated working environment. This problem is particularly pronounced when weighing expensive, toxic, or moisture-sensitive samples. Therefore, current technology lacks a weighing tool that can provide controllable, gentle, and efficient vibration to easily and thoroughly shake off adhered powder. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a non-adhesive powder weighing spoon with a self-oscillating structure, comprising: a spoon body, an oscillating component provided on the handle of the spoon body, the oscillating component comprising: a rocker arm, one end of the rocker arm is mounted on the handle of the spoon, and the other end of the rocker arm is provided with a hammer, the rocker arm rotates or deforms relative to the handle of the spoon to cause the hammer to strike the handle of the spoon.

[0004] Furthermore, the spoon handle is provided with a striking part that works in conjunction with the hammer to strike.

[0005] Furthermore, the hammer is a metal ball or a metal block.

[0006] Furthermore, when the rocker arm rotates relative to the spoon handle, a first return spring is provided between the rocker arm and the spoon handle.

[0007] Furthermore, it also includes a protective cover for protecting the rocker arm rotation area and the first return spring.

[0008] Furthermore, a second return spring is provided between the protective cover and the rocker arm.

[0009] Furthermore, when the rocker arm deforms relative to the spoon handle, the rocker arm and the spoon handle are integrally cast, welded, bolted, or bonded.

[0010] Furthermore, the hammer is threadedly connected to the rocker arm.

[0011] Furthermore, it is characterized by including a limiting component for pressing the hammer against the spoon handle or the striking part.

[0012] Furthermore, the oscillation component is disposed on the back of the spoon handle.

[0013] The beneficial effects of this utility model are: This application's weighing spoon, through the collaborative design of its oscillation components, achieves a controllable and efficient composite vibration mode, completely overcoming the core pain points of traditional weighing tools. The rocker arm drives a hammer made of metal balls or blocks to precisely strike the impact part, generating a powerful initial vibration. Combined with high-frequency damped oscillation driven by the first and second return springs, this creates a composite effect of "powerful impact + continuous micro-vibration." This quickly breaks up stubborn adhesions of trace amounts of powder caused by electrostatic adsorption and surface tension, while avoiding residue problems caused by insufficient vibration force in a single method. Simultaneously, the operator can precisely control the vibration intensity by applying pressure. Combined with the fixing effect of the limiting component during the scooping stage, this effectively avoids powder splashing caused by uncontrolled force in traditional tapping and striking methods, ensuring complete and accurate transfer of the sample to the target container. This significantly improves weighing accuracy, making it particularly suitable for weighing expensive, toxic, or humidity-sensitive samples, reducing sample loss and the risk of cross-contamination.

[0014] This application's weighing spoon features an ergonomic design, enabling convenient one-handed operation. The non-slip handle and well-designed vibration components allow operators to complete the entire process of scooping, transferring, and shaking without additional assistance, significantly improving experimental efficiency. Its purely mechanical structure requires no electricity. The spoon body, handle, and related components are made of stainless steel in a single piece or with high-strength connections, offering excellent corrosion resistance, acid and alkali resistance, and structural stability. A protective cover further protects the internal rotating structure and return spring, effectively preventing dust and wear and extending service life. The threaded connection design of the hammer allows for flexible replacement, enabling adjustment of vibration frequency and intensity according to powder characteristics, adapting to different experimental scenarios. The overall structure is compact and easy to maintain, providing reliable tool support for high-frequency, high-precision powder weighing operations in the laboratory. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the state before the present invention is struck; Figure 3 This is a schematic diagram of the state of this utility model when it is struck; Figure 4 This is a schematic diagram of the utility model in use.

[0016] The attached figures show the following components: spoon body 1, spoon handle 2, oscillation assembly 3, rocker arm 31, hammer 32, striking part 33, first return spring 34, protective cover 35, second return spring 36, and limiting assembly 37. Detailed Implementation

[0017] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] The present invention will be further described below with reference to embodiments and accompanying drawings: A self-oscillating, anti-adhesive powder weighing spoon includes: a spoon body 1, a oscillating component 3 disposed on a spoon handle 2 of the spoon body 1, the oscillating component 3 including: a rocker arm 31, one end of the rocker arm 31 being mounted on the spoon handle 2, and a hammer 32 disposed on the other end of the rocker arm 31. The rocker arm 31 rotates or deforms relative to the spoon handle 2 to cause the hammer 32 to strike the spoon handle 2. The spoon handle 2 is provided with a striking part 33 that cooperates with the hammer 32 to strike. The hammer 32 is a metal ball or a metal block. When the rocker arm 31 rotates relative to the spoon handle 2, a first return spring 34 is disposed between the rocker arm 31 and the spoon handle 2. A protective cover 35 is also included to protect the rotating part of the rocker arm 31 and the first return spring 34. A second return spring 36 is disposed between the protective cover 35 and the rocker arm 31. When the rocker arm 31 deforms relative to the spoon handle 2, the rocker arm 31 and the spoon handle 2 are integrally cast, welded, bolted, or bonded. The hammer 32 is threadedly connected to the rocker arm 31. The feature is that it further includes a limiting component 37 for pressing the hammer 32 against the spoon handle 2 or the striking part 33. The vibration component 3 is disposed on the back of the spoon handle 2.

[0020] The oscillation component 3 is the core technology component for achieving the anti-adhesion function of this weighing spoon. It integrates key structures such as the rocker arm 31, hammer 32, and striking part 33. Its overall effect is to efficiently shake off powder adhering to the inner wall of the spoon body 1 through controllable mechanical vibration, solving the technical problems of uncontrollable vibration force and easy powder splashing or residue in traditional weighing tools. This component realizes a composite vibration mode of active impact and continuous high-frequency micro-vibration, which can not only deal with stubborn powder adhesion, but also avoid sample loss caused by excessive force. The design of the oscillation component 3 on the back of the spoon handle 2 does not affect the operation of the spoon body 1 to scoop powder, and allows the vibration source to be close to the spoon body, shortening the vibration transmission path and improving energy utilization. At the same time, the compact structure design of the component does not occupy extra operating space. With the protection of the protective cover 35, it can effectively prevent dust and pollution, ensuring the safety of use in a clean experimental environment. Its pure mechanical structure does not require electric drive, and has the advantages of high durability and low maintenance cost, making it suitable for long-term high-frequency experimental operations.

[0021] The rocker arm 31 is the core component for power transmission in the oscillation assembly 3, and its function is reflected in three aspects: power transmission, motion control, and reset response. As a key structure connecting the hammer 32 and the spoon handle 2, the rocker arm 31 has the hammer 32 mounted on one end and the spoon handle 2 connected to the other end. It moves the hammer 32 through its own rotation or deformation, thereby generating impact force. When the rocker arm 31 adopts a rotational design, its rotational motion around the connection point must have flexible responsiveness to ensure that there is no jamming when the operator presses it and that it can quickly rebound after being released. This motion characteristic directly determines the impact frequency and vibration effect. The rocker arm 31 with a deformation design does not require a reset spring, thus simplifying the structure. The connection method between the rocker arm 31 and the spoon handle 2 (integral casting, welding, bolt connection, etc.) must ensure structural stability and prevent breakage or loosening during vibration. Its material must have high strength and a certain degree of elasticity, so as to withstand the force when pressing and achieve high-frequency oscillation with the cooperation of the return spring, thereby converting the operator's pressing force into the impact force of the hammer 32, realizing "precise force transmission" and providing a basis for controllable vibration.

[0022] The hammer 32 is the direct component that generates vibration, and its effect directly determines the impact intensity, vibration frequency, and powder dislodging efficiency. The hammer 32 is either a metal ball or a metal block. The high density of the metal material allows it to generate a large impact force upon impact, creating a strong initial vibration that effectively dislodging powder that is stubbornly adhered due to electrostatic adsorption or surface tension. The spherical structure of the metal ball concentrates the impact force, while the metal block provides a more stable impact contact. Operators can select the appropriate hammer type based on the powder adhesion characteristics. The threaded connection between the hammer 32 and the rocker arm 31 allows for disassembly and replacement, facilitating adjustments to the hammer's weight, material, or shape according to experimental needs. For example, when weighing toxic or high-value powders, a rubber-coated metal hammer can be used, ensuring vibration effectiveness while reducing impact noise and the risk of powder splashing. During the movement, the movement path of the hammer 32 needs to be precisely aligned with the striking part 33 to ensure the effective transmission of the impact force. The collision between the hammer and the striking part 33 can not only produce an initial strong vibration, but also form multiple continuous slight collisions under the action of the return spring, producing high-frequency damped oscillations, achieving the effect of "one press, multiple vibrations", and thoroughly removing the residual powder from the inner wall of the spoon.

[0023] The striking part 33 is a key transition component for vibration transmission. Its function is to convert the impact force of the hammer 32 into uniform vibration energy and efficiently transmit it to the spoon body 1. The striking part 33 is located on the spoon handle 2 and works in conjunction with the hammer 32 to strike the target. Its structural design must meet the requirements of high efficiency and stability in vibration transmission. As the impact point, the striking part 33 must have high hardness and strength to avoid deformation or damage caused by long-term impact. It can be made of a separately welded high-strength metal block or an integrally formed boss structure of the spoon handle to ensure that the impact force is not lost. The position of the striking part 33 must be precisely aligned with the movement path of the hammer 32 so that the impact force acts perpendicularly on the spoon handle 2, and is then converted into longitudinal vibration transmitted to the spoon body 1. This longitudinal vibration can directly act on the inner wall where the powder adheres, resulting in a more significant shaking effect. Compared with traditional lateral vibration, the energy utilization rate is significantly improved. In addition, the surface of the striking part 33 needs to be flattened to ensure that the contact area with the hammer 32 is uniform, to avoid vibration deviation due to uneven contact, and to ensure that the vibration intensity of each part of the spoon body 1 is consistent, so as to achieve uniform powder fall-off and solve the problem of local residue.

[0024] The first return spring 34 is the core elastic component for resetting and continuously oscillating the rocker arm 31. Its function is reflected in three aspects: energy storage, reset drive, and high-frequency vibration generation. When the rocker arm 31 rotates relative to the spoon handle 2, the first return spring 34 is compressed or stretched, storing elastic potential energy. This process converts the operator's mechanical pressing energy into the spring's potential energy, providing power for subsequent impacts and oscillations. After releasing the rocker arm 31, the first return spring 34 releases its potential energy, driving the rocker arm 31 to rebound quickly, causing the hammer 32 to strike the striking part 33 at high speed, generating a strong initial vibration. The magnitude of its elastic force directly determines the impact intensity. The operator can control the spring compression by adjusting the pressing force, thereby precisely adjusting the vibration intensity and achieving a "controllable force" operation effect. Furthermore, the elastic characteristics of the first reset spring 34 determine the oscillation frequency. Selecting an appropriate spring stiffness can generate high-frequency micro-vibrations that are suitable for different powder adhesion states. For example, for powders with slight adhesion, the spring stiffness is small, generating low-amplitude high-frequency vibrations; for powders with stubborn adhesion, the spring stiffness is large, generating high-amplitude low-frequency vibrations. Combined with the impact of the hammer 32, a composite vibration mode is formed, which significantly improves the shaking efficiency and solves the technical defect of uncontrollable vibration force of traditional weighing spoons.

[0025] The second return spring 36 assists the first return spring 34 in achieving precise return and oscillation optimization of the rocker arm 31. Its effects are manifested in three aspects: enhancing the return driving force, adjusting the oscillation frequency, and improving the operating feel. Positioned between the protective cover 35 and the rocker arm 31, the second return spring 36 works synergistically with the first return spring 34. During the pressing process of the rocker arm 31, they jointly store energy, and upon release, they jointly release energy, enhancing the rebound force of the rocker arm 31 and making the impact of the hammer 32 more powerful, especially suitable for weighing highly adhesive powders. Simultaneously, the second return spring 36 can adjust its stiffness to form a specific oscillation frequency combination with the first return spring 34, optimizing high-frequency decay oscillation. This makes the vibration more consistent with the mechanical requirements of powder shedding, avoiding the problems of a single spring causing a single oscillation frequency and incomplete powder removal. In terms of operating feel, the second return spring 36 can buffer the pressing force of the rocker arm 31, making the pressing process smoother and avoiding the need for strenuous operation due to excessive spring force of a single spring. This improves the ergonomic experience and allows operators to easily perform multiple pressing operations to ensure complete powder transfer.

[0026] The protective cover 35 is a protective and support component of the oscillation assembly 3, serving three functions: structural protection, environmental protection, and operational safety. From a structural protection perspective, the cover 35 encloses the rotating part of the rocker arm 31 and the first return spring 34, preventing powder, dust, or experimental waste liquids from entering the moving parts, preventing mechanical failures caused by foreign objects jamming, and reducing wear at the connection between the spring and the rocker arm, thus extending the assembly's service life. Regarding environmental protection, the cover 35 blocks trace amounts of powder that may splash during impact, preventing contamination of the experimental environment. This is particularly suitable when weighing toxic, harmful, or high-value powders, reducing sample loss and safety risks. Furthermore, the structural design of the cover 35 must adapt to operational needs; its surface can be designed to be smooth or have a non-slip texture, ensuring comfort for the operator holding the spoon handle. It also provides a mounting base for the second return spring 36 and the limiting component 37, making the entire oscillation assembly structure more compact and rationally laid out, improving the overall stability and durability of the weighing spoon.

[0027] The limiting component 37 can be a limiting sleeve, which is fitted onto the spoon handle 2 and the rocker arm 31. In the working state, the limiting sleeve moves towards the connection between the spoon handle 2 and the rocker arm 31; in the non-working state, the limiting sleeve moves towards the hammer 32. Alternatively, the limiting component 37 can be controlled by a bolt on the protective cover 35, rotating which controls the angle between the spoon handle 2 and the rocker arm 31. The limiting component 37 in this application is not limited to the above two cases; any limiting component 37 that ensures the hammer 32 is pressed tightly against the spoon handle 2 or the striking part 33 in the non-working state is acceptable. The main function of the limiting component 37 is to reduce interference caused by the oscillating structure when the weighing spoon scoops powder, thus minimizing its impact on experimental operations.

[0028] Work process: The operator first holds the spoon handle 2 and uses the spoon body 1 to scoop up a small amount of powder sample. At this time, the limiting component 37 keeps the hammer 32 close to the spoon handle 2 or the striking part 33 to prevent the vibration component 3 from accidentally shaking and interfering with the scooping operation. After moving it above the weighing vessel and with the spoon mouth facing down, the limiting component 37 is unlocked, and the operator uses the index finger or thumb of the same hand to press the hammer 32 end of the rocker arm 31. When pressed, the rocker arm 31 rotates around the connection point with the spoon handle 2, the first return spring 34 is compressed, and the second return spring 36 is stretched, with both springs storing elastic potential energy simultaneously. After releasing the rocker arm 31, the two springs quickly release their potential energy, driving the rocker arm 31 to rebound rapidly, causing the hammer 32, made of metal ball or metal block material, to strike the striking part 33 on the spoon handle 2 at high speed, generating a strong initial vibration. Subsequently, under the elastic action of the two springs and the impact reaction force, the rocker arm 31 performs high-frequency damped oscillation, and the hammer 32 repeatedly strikes the striking part 33 slightly, forming a continuous high-frequency micro-vibration. Vibration is efficiently transmitted to the spoon body 1 through the spoon handle 2, causing the powder adhering to the inner wall of the spoon to completely fall off under the combined vibration and fall precisely into the target container. If there is still residue, the rocker arm 31 can be pressed repeatedly until the powder is completely transferred. The protective cover 35 protects the internal rotating structure and the return spring throughout the process, avoiding contamination and wear.

[0029] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made in accordance with the claims of this utility model should still fall within the patent coverage of this utility model.

Claims

1. A non-adhesive powder weighing spoon with a self-oscillating structure, comprising: A spoon body (1) is provided with a oscillation assembly (3) on the handle (2) of the spoon body (1). The oscillation assembly (3) includes a rocker arm (31), one end of which is mounted on the handle (2) and the other end of which is provided with a hammer (32). The rocker arm (31) rotates or deforms relative to the handle (2) to cause the hammer (32) to strike the handle (2).

2. The anti-adhesion powder weighing spoon with a self-oscillating structure according to claim 1, characterized in that, The spoon handle (2) is provided with a striking part (33) that works in conjunction with the hammer (32) to strike.

3. The anti-adhesion powder weighing spoon with a self-oscillating structure according to claim 2, characterized in that, The hammer (32) is a metal ball or a metal block.

4. The anti-adhesion powder weighing spoon with a self-oscillating structure according to claim 1, characterized in that, When the rocker arm (31) rotates relative to the spoon handle (2), a first return spring (34) is provided between the rocker arm (31) and the spoon handle (2).

5. The anti-adhesion powder weighing spoon with a self-oscillating structure according to claim 4, characterized in that, It also includes a cover (35) for protecting the rotating part of the rocker arm (31) and the first return spring (34).

6. The anti-adhesion powder weighing spoon with a self-oscillating structure according to claim 5, characterized in that, A second return spring (36) is provided between the protective cover (35) and the rocker arm (31).

7. The anti-adhesion powder weighing spoon with a self-oscillating structure according to claim 1, characterized in that, When the rocker arm (31) deforms relative to the spoon handle (2), the rocker arm (31) and the spoon handle (2) are integrally cast, welded, bolted or bonded.

8. The anti-adhesion powder weighing spoon with a self-oscillating structure according to claim 1, characterized in that, The hammer (32) is threadedly connected to the rocker arm (31).

9. The anti-adhesion powder weighing spoon with a self-oscillating structure according to claim 2, characterized in that, It also includes a limiting component (37) for pressing the hammer (32) against the spoon handle (2) or the striking part (33).

10. The anti-adhesion powder weighing spoon with a self-oscillating structure according to claim 1, characterized in that, The oscillation component (3) is located on the back of the spoon handle (2).

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