A laboratory filter paper breaking device
By designing a laboratory filter paper crushing device with a motor-driven blade and a splash guard, the problems of slow crushing speed and liquid splashing of filter paper and sediment were solved, achieving efficient crushing and accurate results.
Patent Information
- Application Number
- CN202521693004.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-08
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-08-08
AI Technical Summary
Traditional methods involve slow crushing of filter paper and precipitate, which may cause solution splashing and affect the accuracy of experimental results.
Design a laboratory filter paper crushing device comprising a handheld main unit housing, a filter paper crushing shaft, and a bottom crushing hood. The device utilizes motor-driven blades to crush filter paper and is equipped with a splash guard and an easy-to-wash structure to ensure complete recovery of the target analyte.
It improves filter paper crushing efficiency, ensures the accuracy and reliability of analysis results, is simple to operate, can be completed by a single person, and is easy to disassemble and assemble.
Smart Images
Figure CN224672802U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of filter paper crushing, and in particular to a laboratory filter paper crushing device. Background Technology
[0002] Filter paper is frequently used for filtration in experiments. After filtration, some procedures retain the filtrate, while others retain the precipitate. Among the methods for retaining the precipitate, some require further digestion (such as GB / T 21933.1-2008 Determination of Nickel-Iron and Nickel Content, and Diketoxime Gravimetric Method). This requires directly placing the entire sheet of filter paper into the solution for digestion. However, because some precipitate is tightly bound or adsorbed inside the filter paper fibers, incomplete digestion occurs, affecting the results. Therefore, it is necessary to crush the filter paper and precipitate together. The traditional method is to use a transparent or white plastic rod for crushing. However, using a plastic rod for crushing is slow, and the pressure on the filter paper may cause the precipitate or solution to splash out, affecting the results. Utility Model Content
[0003] The purpose of this invention is to provide a laboratory filter paper crushing device to solve the above-mentioned problems.
[0004] This utility model achieves the above objectives through the following technical solutions: A laboratory filter paper crushing device includes a handheld main unit housing, a filter paper crushing shaft, and a bottom crushing cover. The bottom crushing cover is detachably installed to the bottom of the handheld main unit housing. A motor is installed inside the housing cavity of the handheld main unit housing. A press-type shaft end slot is installed at the end of the rotor shaft of the motor. The top of the filter paper crushing shaft is detachably installed to the press-type shaft end slot. A press hole is provided on the top of the handheld main unit housing. A press rod is inserted into the press hole. A press unlock button is installed on the top of the press rod. A compression spring is installed between the press unlock button and the press hole. The bottom end of the press rod is connected to the press-type shaft end slot via a connecting rod. A blade is fixedly installed on the bottom end of the filter paper crushing shaft. A splash guard is installed on the filter paper crushing shaft above the blade.
[0005] Furthermore, the press-type shaft end retaining body includes an insertion retaining body and a press-unlocking ring sleeve. The press-unlocking ring sleeve is sleeved on the outside of the insertion retaining body. The connecting rod is connected to the press-unlocking ring sleeve. The inner wall of the press-unlocking ring sleeve is provided with a bead outer ring groove. The bottom of the insertion retaining body is provided with a shaft insertion groove. The groove wall of the shaft insertion groove is provided with a bead limiting hole. A retaining bead is provided in the bead limiting hole. The top shaft of the filter paper crushing shaft is provided with a shaft retaining ring groove.
[0006] Furthermore, a limiting ear is installed at the bottom of the insertion slot, and a limiting ear groove is provided on the inner wall of the annular hole of the limiting ear. A limiting ear is fixedly installed on the filter paper crushing shaft, and the limiting ear is inserted into the limiting ear groove.
[0007] Furthermore, a retaining ring is installed at the bottom of the handheld main unit housing, and a main unit retaining component is provided on the outer side of the retaining ring. An inner retaining component is provided on the inner wall of the bottom crushing cover, and the inner retaining component and the main unit retaining component are engaged together.
[0008] Furthermore, the top of the splash guard is provided with an easy-to-wash spherical surface, and the bottom of the splash guard is provided with a splash-proof conical surface.
[0009] Furthermore, the handheld host housing is provided with a start button and a power cord, and a circuit board is installed inside the housing cavity of the handheld host housing. The circuit board is electrically connected to the start button, the power cord, and the motor respectively.
[0010] The beneficial effects are as follows: The laboratory filter paper crushing device of this utility model, through the easy-to-wash splash guard and the detachable main body and shaft, ensures the complete recovery and transfer of the target analyte to the maximum extent, ensuring the accuracy and reliability of the analysis results. It is simple to operate, can be operated by a single person, and the dual quick disassembly and assembly structure ensures the flexibility of use. It also has high crushing efficiency. Attached Figure Description
[0011] Figure 1 This is a structural diagram of a laboratory filter paper crushing device according to the present invention; Figure 2 This is a schematic diagram of the internal structure of the handheld main unit of the laboratory filter paper crushing device described in this utility model; Figure 3 This is a schematic diagram of the pressing, pulling, and limiting clip structure of a laboratory filter paper crushing device according to the present invention.
[0012] The annotations in the attached figures are explained as follows: 1. Handheld main unit housing; 2. Filter paper crushing shaft; 3. Bottom crushing cover; 4. Splash guard; 41. Easy-to-wash spherical surface; 42. Splash-proof conical surface; 5. Blade; 6. Inner cover retainer; 7. Snap ring; 8. Main unit retainer; 9. Press unlock button; 10. Compression spring; 11. Start button; 12. Press rod; 13. Circuit board; 14. Motor; 15. Connecting rod; 16. Press unlock ring sleeve; 17. Insertion slot body; 18. Base pad; 19. Locking bead; 20. Limiting ear piece; 21. Limiting ear groove; 22. Limiting ear; 23. Bead outer ring groove. Detailed Implementation
[0013] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.
[0014] The following is combined with Figures 1 to 3 The laboratory filter paper crushing device provided in this embodiment will be further described as follows: Please refer to Figure 1 The present invention provides a laboratory filter paper crushing device, including a handheld main unit housing 1, a filter paper crushing shaft 2 and a bottom crushing cover 3. The handheld main unit housing 1 is cylindrical for easy gripping, and the bottom crushing cover 3 is made of transparent material for easy observation of the internal crushing situation. The bottom crushing cover 3 can be detachably installed at the bottom of the handheld main unit housing 1. Reference Figure 2 A motor 14 is installed inside the shell cavity of the handheld main unit housing 1. A press-type shaft end slot is installed at the end of the rotor shaft of the motor 14. The top end of the filter paper crushing shaft 2 can be detachably installed onto the press-type shaft end slot. The top of the handheld main unit housing 1 is provided with a pressing hole, and a pressing rod 12 is inserted into the pressing hole. A pressing unlock button 9 is installed on the top of the pressing rod 12. A compression spring 10 is installed between the pressing unlock button 9 and the pressing hole. The compression spring 10 is sleeved on the pressing rod 12 to realize the rebound of the pressing rod 12. The bottom end of the pressing rod 12 is connected to the pressing shaft end slot body through the connecting rod 15. The state is unlocked by pressing the pressing shaft end slot body, which facilitates the disassembly and installation of the filter paper crushing shaft 2. A blade 5 is fixedly installed at the bottom of the filter paper crushing shaft 2. The filter paper crushing shaft 2 and the blade 5 are made of polyetheretherketone (PEEK), which is both corrosion-resistant and ensures the strength of the blade. A splash guard 4 is installed on the filter paper crushing shaft 2 above the blade 5. The bottom crushing cover 3 is a cylindrical cover. The maximum outer diameter of the splash guard 4 is slightly smaller than the inner diameter of the bottom crushing cover 3. The splash guard 4 can block the filter paper during the crushing process and is less likely to leave rinsing liquid during rinsing.
[0015] like Figures 1-3 As shown, embodiments of this utility model also disclose the following more optimized specific structures: Reference Figure 3The press-type shaft end slot body includes an insertion slot body 17 and a press-unlock ring 16. The press-unlock ring 16 is sleeved on the outside of the insertion slot body 17, and there is a certain gap between the two to avoid affecting their relative rotation. The connecting rod 15 is an L-shaped rod and is connected to the press-unlock ring 16. The inner wall of the press-unlock ring 16 is provided with a bead outer ring groove 23. The bottom of the insertion slot body 17 is provided with a shaft insertion groove. The groove wall of the shaft insertion groove is provided with a bead limiting hole. A locking bead 19 is provided in the bead limiting hole. Part of the locking bead 19 can protrude into the shaft insertion groove. The top shaft of the filter paper crushing shaft 2 is provided with a shaft locking ring groove. When the press-unlock ring 16 is pressed down, the locking bead 19 can be pressed into the bead outer ring groove 23. When reset, the locking bead 19 is locked into the shaft locking ring groove, thereby realizing the insertion and removal limit of the filter paper crushing shaft 2. A limiting ear 20 is installed at the bottom of the insertion slot body 17. A limiting ear groove 21 is provided on the inner wall of the ring hole of the limiting ear 20. A limiting ear 22 is fixedly installed on the filter paper crushing shaft 2. The limiting ear 22 is inserted into the limiting ear groove 21 to limit its rotation direction and drive it to rotate synchronously.
[0016] The bottom of the handheld main unit housing 1 is provided with a bottom shell hole for easy access of the limiting earring 20. A retaining ring 7 is installed at the bottom of the handheld main unit housing 1. A main body retaining member 8 is provided on the outside of the retaining ring 7. An inner retaining member 6 is provided on the inner wall of the bottom crushing cover 3. The inner retaining member 6 and the main body retaining member 8 are engaged together, so that the bottom crushing cover 3 and the handheld main unit housing 1 can be detached and installed.
[0017] In this embodiment, the inner cover clip 6 and the main body clip 8 are rotationally symmetrical L-shaped clips, which facilitates the insertion of the clip ring 7 into the bottom crushing cover 3 to achieve rotational locking.
[0018] The top of the splash guard 4 is provided with an easy-to-rinse spherical surface 41, and the bottom of the splash guard 4 is provided with a splash-proof conical surface 42. The spherical surface at the top makes it easy to slide down when rinsed with distilled water or rinsing liquid, and the conical surface at the bottom makes it easier to flow down and less likely to splash.
[0019] The handheld host housing 1 has a start button 11 and a power cord on its housing. A circuit board 13 is installed inside the housing cavity of the handheld host housing 1. The circuit board 13 is electrically connected to the start button 11, the power cord, and the motor 14.
[0020] like Figures 1-3The laboratory filter paper crushing device shown is used to crush filter paper containing a large amount of the element to be tested or chemical reagent in the laboratory. This embodiment takes the determination of silicon and iron by potassium fluorosilicate titration method (GB / T 4333.1-2019) as an example. After the potassium fluorosilicate precipitate is filtered, the filter paper along with the precipitate needs to be transferred into the original plastic beaker, potassium nitrate-ethanol solution and phenolphthalein indicator are added, the filter paper is crushed using the filter paper crushing device, and then rinsed clean with washing solution. This can greatly improve the detection efficiency. The filter paper crushing and rinsing process is as follows: Place the filter paper into the bottom crushing cover 3, then press the unlock button 9 with one hand and insert the filter paper crushing shaft 2 into the press-type shaft end slot with the other hand, and lock the handheld main unit shell 1 onto the bottom crushing cover 3. Press the start button 11 and observe the internal filter paper breakage. After the breakage is complete, separate the handheld main unit housing 1 from the bottom breakage cover 3. During the separation process, continuously press the unlock button 9 to keep the filter paper breakage shaft 2, splash guard 4, and blade 5 inside the bottom breakage cover 3. Rinse the inner wall, blade, and splash guard 4 with distilled water or rinsing solution to prevent the loss of the element to be tested.
[0021] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of this utility model as claimed.
Claims
1. A laboratory filter paper crushing device, characterized in that: The device includes a handheld main unit housing (1), a filter paper crushing shaft (2), and a bottom crushing cover (3). The bottom crushing cover (3) is detachably installed on the bottom of the handheld main unit housing (1). A motor (14) is installed inside the housing cavity of the handheld main unit housing (1). A press-type shaft end slot is installed at the end of the rotor shaft of the motor (14). The top of the filter paper crushing shaft (2) is detachably installed on the press-type shaft end slot. A press hole is provided on the top of the handheld main unit housing (1). A pressing rod (12) is inserted into the pressing hole. A pressing unlock button (9) is installed on the top of the pressing rod (12). A compression spring (10) is installed between the pressing unlock button (9) and the pressing hole. The bottom end of the pressing rod (12) is connected to the pressing shaft end slot body through a connecting rod (15). A blade (5) is fixedly installed on the bottom end of the filter paper crushing shaft (2). A splash guard (4) is installed on the filter paper crushing shaft (2) above the blade (5).
2. The laboratory filter paper crushing device according to claim 1, characterized in that: The press-type shaft end slot body includes an insertion slot body (17) and a press-unlock ring sleeve (16). The press-unlock ring sleeve (16) is sleeved on the outside of the insertion slot body (17). The connecting rod (15) is connected to the press-unlock ring sleeve (16). The inner sleeve wall of the press-unlock ring sleeve (16) is provided with a bead outer ring groove (23). The bottom of the insertion slot body (17) is provided with a shaft insertion groove. The groove wall of the shaft insertion groove is provided with a bead limiting hole. The bead limiting hole is provided with a locking bead (19). The top shaft of the filter paper crushing shaft (2) is provided with a shaft locking ring groove.
3. The laboratory filter paper crushing device according to claim 2, characterized in that: The bottom of the insertion slot body (17) is equipped with a limiting ear ring (20), and the inner wall of the ring hole of the limiting ear ring (20) is provided with a limiting ear groove (21). The filter paper crushing shaft (2) is fixedly installed with a limiting ear (22), and the limiting ear (22) is inserted into the limiting ear groove (21).
4. The laboratory filter paper crushing device according to claim 1, characterized in that: The bottom of the handheld main unit housing (1) is equipped with a retaining ring (7), and the outer side of the retaining ring (7) is provided with a main body retaining member (8). The inner wall of the bottom crushing cover (3) is provided with an inner cover retaining member (6), and the inner cover retaining member (6) and the main body retaining member (8) are engaged together.
5. The laboratory filter paper crushing device according to claim 1, characterized in that: The top of the splash guard (4) is provided with an easy-to-wash spherical surface (41), and the bottom of the splash guard (4) is provided with a splash-proof conical surface (42).
6. The laboratory filter paper crushing device according to claim 1, characterized in that: The handheld host housing (1) is provided with a start button (11) and a power cord. A circuit board (13) is installed inside the housing cavity of the handheld host housing (1). The circuit board (13) is electrically connected to the start button (11), the power cord, and the motor (14).