Sample vessel for constant-weight weighing of filter membrane
By designing a sample dish consisting of an open container and a lid, a uniform airflow channel for the filter membrane was achieved, solving the problem of incomplete drying of the filter membrane and improving the efficiency and accuracy of constant weight weighing of the filter membrane.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2026-03-24
AI Technical Summary
During the constant weight weighing process, the air circulation inside the covered petri dish is restricted, making it difficult for water vapor to escape quickly, which prolongs the drying time and affects the drying effect of the filter membrane and the accuracy of the experimental results.
Design a sample dish for constant weight weighing of filter membranes, comprising an open container and a lid, with a vent and gas flow channel at the open end to ensure air circulation, prevent impurity contamination, and accelerate filter membrane drying through directional airflow.
This improved the drying efficiency and accuracy of constant weight weighing of the filter membrane, ensured that the filter membrane dried in a uniform airflow environment, reduced residual moisture, and enhanced the reliability of experimental results.
Smart Images
Figure CN224025060U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to constant weight measurement technical field, concretely relates to a sample dish for filter membrane constant weight measurement. BACKGROUND
[0002] The constant weight measurement of filter membrane refers to the operation process that the filter membrane is weighed repeatedly until its weight reaches a relatively stable and constant value in a specific experiment or analysis process. The constant weight measurement of filter membrane aims to remove the water, impurities and other volatile or removable substances adsorbed on the surface of the filter membrane, so as to ensure that the weighed weight is the true weight of the filter membrane itself and the intercepted non-volatile and non-removable substances, thereby improving the accuracy of subsequent analysis results.
[0003] For example, in experiments for determining the content of suspended matter and particulate matter in water samples, accurate measurement of the weight change of the filter membrane is crucial for calculating the content of suspended matter.
[0004] In the drying process of the filter membrane, the operator usually places the filter membrane in a culture dish to provide a relatively closed environment for the filter membrane and avoid contamination of the filter membrane during the drying process. However, due to the relatively closed internal space of the covered culture dish, air circulation is limited. During the drying process, the water vapor evaporated is difficult to quickly exhaust and will accumulate in the culture dish, resulting in a high water vapor concentration around the filter membrane, which slows down the diffusion speed of water from the surface of the filter membrane to the surrounding environment, prolongs the drying time, and easily leads to incomplete drying of the filter membrane, thereby affecting the accuracy of subsequent experimental results. SUMMARY
[0005] The utility model aims to provide a container device for the process of constant weight measurement of filter membrane to accelerate air circulation on the surface of the filter membrane, improve the drying efficiency of the filter membrane, and improve the drying effect.
[0006] To achieve the above-mentioned purpose, the utility model provides a sample dish for filter membrane constant weight measurement, which comprises an open container and a cover,
[0007] The open container is provided with a placing cavity for containing the filter membrane, and the cover is arranged at the opening of the open container and forms a covering area on the top of the placing cavity.
[0008] The covering area is configured to cover the opening of the open container and leave an air vent at the opening.
[0009] A gas circulation channel is arranged between the cover and the open container, which is configured to guide air to enter the placing cavity and contact the filter membrane through the air vent, and then guide the air to exhaust through the air vent.
[0010] The cover body forms a covering area at the opening, which can prevent foreign matters and dust from falling into the placing cavity and polluting the filter membrane, and the gas circulation channel connected with the communication vent ensures necessary air circulation, improves the drying efficiency of the filter membrane, improves the drying effect, and ensures the reliability of the constant weight measurement result.
[0011] Preferably, the opening is provided with a first vent and a second vent, and the covering area is located between the first vent and the second vent.
[0012] Preferably, the cover body comprises a cover plate and a limiting part, the limiting part is arranged at the bottom of the cover plate, and the limiting part is configured to be in contact with the sidewall of the open container to limit the sliding of the cover plate at the opening.
[0013] Preferably, the limiting part is located outside the open container, and the limiting part extends along the outer wall of the open container from the opening to the bottom of the placing cavity.
[0014] Preferably, the limiting part is located inside the open container, and the limiting part extends along the inner wall of the open container from the opening to the bottom of the placing cavity.
[0015] Preferably, the cover body is further provided with a support column connected to the bottom end of the limiting part.
[0016] Preferably, the open container and the cover body are both pressed from quartz raw materials to form transparent molded bodies.
[0017] Preferably, the open container is in a cylindrical shape, and the cover body is in a waist-shaped plate shape.
[0018] Compared with the prior art, the sample dish for filter membrane constant weight measurement has the following substantial features and progress: the overall structure of the sample dish for filter membrane constant weight measurement is composed of an open container and a cover body, the functions of covering protection and gas circulation are realized by simple structure design, the ordered circulation of air around the filter membrane is ensured by using the gas circulation channel, which is beneficial to accelerating the evaporation and drying of water in the filter membrane, so that the filter membrane reaches the constant weight state faster, the efficiency is improved, in addition, the reasonable air circulation mode makes the environment more stable during the constant weight process, reduces the water residue instability caused by unordered air flow, improves the drying effect, helps to more accurately control the filter membrane to reach the constant weight, and improves the accuracy of the measurement result. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 is a perspective structural schematic view of a sample dish for filter membrane constant weight measurement in the embodiment of the utility model.
[0020] Figure 2 is Figure 1 is a perspective structural schematic view of a sample dish for filter membrane constant weight measurement in another view.
[0021] Figure 3 is Figure 2 a front view.
[0022] Figure 4 is Figure 3 a top view.
[0023] Figure 5 is Figure 3 an isometric cross-sectional structural schematic view of A-A in FIG.
[0024] Figure 6 is Figure 4 a cross-sectional structural schematic view of B-B in FIG.
[0025] Reference signs: 1, open container; 2, cover body; 3, placement cavity; 4, first air vent; 5, second air vent; 21, cover plate; 22, limiting portion; 23, support column. DETAILED DESCRIPTION
[0026] The specific embodiments of the utility model will be described in detail below with reference to the accompanying drawings.
[0027] As Figures 1-6 shown in the utility model embodiment, a sample dish for constant weight weighing of filter membranes is proposed, which aims to accelerate air circulation on the surface of the filter membrane, improve the drying efficiency of the filter membrane, and improve the drying effect in the constant weight weighing process of the filter membrane.
[0028] The sample dish for constant weight weighing of filter membranes in the utility model embodiment utilizes the cover body to form a covering area at the opening, which can prevent foreign matter, dust, etc. from falling into the placement cavity to contaminate the filter membrane to a certain extent, and simultaneously utilizes the gas circulation channel of the communication air vent to ensure necessary air circulation, accelerate air circulation on the surface of the filter membrane, utilize the gas circulation channel to ensure orderly air circulation around the filter membrane, which is conducive to accelerating evaporation and drying of moisture of the filter membrane, improves the drying efficiency of the filter membrane, and improves the drying effect.
[0029] As Figure 1 shown, a sample dish for constant weight weighing of filter membranes includes an open container 1 and a cover body 2.
[0030] As Figure 2 shown in combination Figure 5 , the inside of the open container 1 is provided with a placement cavity 3 for containing the filter membrane. The cover body 2 is arranged at the opening of the open container 1 and forms a covering area at the top of the placement cavity 3. The covering area is configured to cover the opening of the open container 1 and leave an air vent at the opening.
[0031] The gas flow channel is arranged between the cover 2 and the open container 1. The gas flow channel is configured to guide air into the placement cavity 3 from the air inlet, contact the filter membrane, and then guide the air out of the air outlet.
[0032] As shown in Figure 3 , the first air inlet 4 and the second air inlet 5 are arranged at the opening, and the covered area is located between the first air inlet 4 and the second air inlet 5. As shown in Figure 6 , the first air inlet 4 and the second air inlet 5 are respectively located on both sides of the covered area, which can guide the air to flow into and out of the placement cavity 3 in an orderly manner. The fresh air enters from the first air inlet 4, and after passing through the filter membrane to remove moisture, it is discharged from the second air inlet 5. This directional air flow circulation is more efficient than a single air inlet design, allowing the filter membrane to dry in a more uniform air flow environment, avoiding inconsistent drying speed in local areas due to poor air flow, thereby improving the uniformity and stability of the filter membrane constant weight.
[0033] For example, as shown in Figure 3 in combination with Figure 4 , the open container 1 is in the shape of a cylindrical tube, and the cover 2 is in the shape of a waist-shaped plate. As shown in Figure 4 , the waist-shaped plate-shaped cover 2 is symmetrically arranged along the center line of the open container 1. In this way, the gas flow channel is completely symmetrical on both sides, so that the air entering from the air inlet can be uniformly distributed around the filter membrane, ensuring that the degree of contact between each part of the filter membrane and the air is consistent. During the filter membrane constant weight process, uniform air flow helps the filter membrane surface water to evaporate uniformly, avoiding too fast or too slow drying of the filter membrane in local areas due to uneven air flow, thereby improving the accuracy and stability of the constant weight measurement.
[0034] As shown in Figure 3 , the cover 2 includes a cover plate 21 and a limiting portion 22, the limiting portion 22 is arranged at the bottom of the cover plate 21, and the limiting portion 22 is configured to contact the side wall of the open container 1 to limit the sliding of the cover plate 21 at the opening.
[0035] The limiting portion 22 is in close contact with the side wall of the open container 1, effectively preventing the cover plate 21 from sliding randomly at the opening, even if it is slightly shaken or collided during the experiment, the cover plate 21 can stably cover the open container 1.
[0036] As shown in Figure 2 , the limiting portion 22 is located on the outside of the open container 1. The limiting portion 22 extends along the outer wall of the open container 1 from the opening to the bottom of the placement cavity 3.
[0037] According to some preferred embodiments of the present application, the limiting portion 22 is located on the inside of the open container 1. The limiting portion 22 extends along the inner wall of the open container 1 from the opening to the bottom of the placement cavity 3.
[0038] AsFigure 3 As shown, the cover 2 is further provided with a support 23. The support 23 is connected to the bottom end of the limiting part 22. The support 23 is connected to the bottom end of the limiting part 22, providing an additional support point for the cover 2, so that the cover 2 is more stable when placed on the open container 1 and is not easy to shake or tip over.
[0039] In order to further meet the high temperature resistance requirement of the sample dish for filter membrane constant weight measurement in the scenario of use in a muffle furnace, the open container 1 and the cover 2 are both pressed into transparent shaped bodies from quartz raw materials. The quartz raw materials have a very high melting point and good thermal stability, and can withstand the high temperature environment in the muffle furnace without deformation or damage. At the same time, the transparent shaped body allows the operator to observe the state of the filter membrane in the placement cavity 3 at any time, without the need to open the cover 2 to understand whether the filter membrane is placed flat, whether there are abnormal changes, etc.
[0040] In use of the sample dish for filter membrane constant weight measurement according to the embodiments of the present application, the operator places the filter membrane into the placement cavity 3 inside the open container 1, the cover 2 is provided with a first air vent 4 and a second air vent 5 at the opening, and the cover area is located between the two, so that a stable air circulation can be formed. Air enters from the first air vent 4, fully contacts the filter membrane, and is discharged from the second air vent 5 after carrying away the moisture, so as to accelerate the drying of the filter membrane and make it quickly reach a constant weight state.
[0041] The present application is not limited to the specific technical solutions described in the above embodiments. In addition to the above embodiments, the present application can also have other implementation manners. For those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A sample dish for filter constant weight weighing, characterized in that, The open container (1) and the cover (2), The inside of the open container (1) is provided with a placement cavity (3) for holding a filter membrane, and the cover (2) is arranged at the opening of the open container (1) and forms a covering area at the top of the placement cavity (3); The covering area is configured to cover the opening of the open container (1) and leave an air vent at the opening. A gas flow channel is provided between the cover (2) and the open container (1), which is configured to guide air from the air vent into the placement cavity (3) to contact the filter membrane, and then guide the air out of the air vent.
2. The sample dish for filter membrane constant weight weighing according to claim 1, characterized in that, The opening is provided with a first air vent (4) and a second air vent (5), and the covering area is located between the first air vent (4) and the second air vent (5).
3. The sample dish for filter constant weight weighing according to claim 1, characterized in that, The cover (2) includes a cover plate (21) and a limiting portion (22), the limiting portion (22) is arranged at the bottom of the cover plate (21), and the limiting portion (22) is configured to contact the side wall of the open container (1) to limit the sliding of the cover plate (21) at the opening.
4. The sample dish for filter membrane constant weight weighing according to claim 3, characterized in that, The limiting portion (22) is located outside the open container (1), and the limiting portion (22) extends along the outer wall of the open container (1) from the opening to the bottom of the placement cavity (3).
5. The sample dish for filter constant weight weighing of claim 3, wherein, The limiting portion (22) is located inside the open container (1), and the limiting portion (22) extends along the inner wall of the open container (1) from the opening to the bottom of the placement cavity (3).
6. The sample dish for filter constant weight weighing of claim 3, wherein, The cover (2) is also provided with a support (23), and the support (23) is connected to the bottom end of the limiting portion (22).
7. The sample dish for filter constant weight weighing of claim 1, wherein, The open container (1) and the cover (2) are both made of quartz raw materials and are pressed into transparent shaped bodies.
8. The sample dish for filter constant weight weighing of claim 1, wherein, The open container (1) is in the shape of a cylindrical tube, and the cover (2) is in the shape of a waist-shaped plate.