A funnel device for loading samples on specific surface

Abstract

The utility model discloses a funnel device for specific surface loading, wherein the loading part is funnel-shaped, including a flared end formed at the entrance of the loading part and a contraction end formed at the exit of the loading part; the guide neck is cylindrical, and the feed end of the guide neck is connected to the contraction end; a limiting ring sleeve is provided at the connection between the feed end and the contraction end, and a feed through hole is provided axially of the limiting ring sleeve, the feed through hole connects the loading part and the guide neck, and the radius of the feed through hole is smaller than the inner diameter of the guide neck. When the utility model is loading, the pipe mouth of the specific surface tube and the inner periphery of the guide neck will not form axial friction, thereby reducing the risk of notch formation at the pipe mouth of the specific surface tube; at the same time, the inner diameter of the feed through hole is smaller than the outer diameter of the guide neck, and the material entering the specific surface tube from the feed through hole during loading can accurately enter the interior of the specific surface tube, and will not be scattered in the gap between the outer periphery of the specific surface tube and the inner periphery of the guide neck, thereby reducing the cost loss of the material.

Description

Technical Field

[0001] The utility model relates to the technical field of specific surface area testing tools, and more specifically, to a funnel device for loading samples of specific surface area. Background Art

[0002] With the rapid development of the new energy industry and the continuous demand for smart terminal devices, power batteries and energy storage batteries such as lithium batteries have developed rapidly. In recent years, the shipment volume of positive electrode materials, one of the main materials of lithium batteries, has also achieved rapid development. At the same time, the demand for positive electrode materials has increased, which has led to an increase in the testing volume and testing requirements for lithium battery positive electrode materials. Therefore, higher requirements are placed on the detection link in terms of test accuracy. Whether the sample loading process is controlled affects the final test stability.

[0003] The existing funnel device for specific surface loading includes a funnel part and a cylindrical part which are connected in sequence along the direction of the material, and the inner diameter of the cylindrical part is the same as the inner diameter of the bottom of the funnel part. When loading the sample, the specific surface tube is inserted from the bottom of the cylindrical part, and the sample enters the tube mouth of the specific surface tube from the funnel part, and then enters the spherical cavity of the specific surface tube along the tube mouth of the specific surface tube.

[0004] Although the existing funnel device for specific surface area loading can realize the loading work, there is a certain gap between the outer circumference of the specific surface tube and the inner circumference of the cylindrical part, the fit is low, and the funnel device and the specific surface tube cannot be relatively fixed in the axial direction. During the loading process, the specific surface tube mouth and the cylindrical part will cause friction, resulting in a gap in the tube mouth of the specific surface tube, and even the feed port of the specific surface tube will move relative to the funnel device to a position higher than the feed port of the funnel device, affecting the normal use of the specific surface tube and causing cost losses.

[0005] Therefore, how to provide a funnel device that can be stably and accurately used for specific surface loading has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0006] The utility model aims to provide a funnel device which can be used for loading samples stably and accurately.

[0007] The utility model provides a funnel device for specific surface loading, comprising:

[0008] A loading part and a guide neck part which are coaxially connected in sequence along the feeding direction;

[0009] The charging portion is funnel-shaped, including an expanded end formed at the inlet of the charging portion and a contracted end formed at the outlet of the charging portion;

[0010] The guide neck is cylindrical, and the feed end of the guide neck is connected to the contraction end; a limiting ring sleeve is arranged at the connection between the feed end and the contraction end, and a feed through hole is opened axially of the limiting ring sleeve, and the feed through hole connects the loading part and the guide neck, and the radius of the feed through hole is smaller than the inner diameter of the guide neck.

[0011] Optionally, the inner diameter of the limiting ring sleeve gradually decreases from top to bottom, wherein the inner diameter of the top of the limiting ring sleeve is equal to the inner diameter of the contraction end, and the inner diameter of the bottom of the limiting ring sleeve is smaller than the inner diameter of the guide neck.

[0012] Optionally, the guide neck and the limiting ring sleeve are integrally formed with the charging portion, and the guide neck is coaxial with the charging portion and extends from the contraction end back to the charging portion.

[0013] Optionally, the wall thickness of the charging portion gradually increases from the expansion end to the contraction end.

[0014] Optionally, in the cross section of the charging portion, the slope k1 of the inner wall and the slope k2 of the outer wall satisfy

[0015] It should be noted that the slope of the inner side wall in this application is based on Figure 1 The direction is based on the tangent value of the angle between the inner wall of the charging part and the horizontal right straight line, that is, Figure 1 On the cross section, the slope of the inner wall relative to the horizontal rightward straight line; the slope of the outer wall is calculated in the same way.

[0016] Optionally, the side wall thickness d of the contraction end of the charging portion satisfies

[0017] In the formula, r1 is the radius of the feeding hole;

[0018] r2 is the outer diameter of the flared end of the charging section;

[0019] r3 is the outer diameter of the guide neck.

[0020] Optionally, the bottom surface of the limiting ring sleeve is an annular plane.

[0021] Optionally, the materials of the charging part, the guide neck and the limiting ring sleeve are all selected from inorganic non-metallic materials, polymer materials or metal aluminum.

[0022] Optionally, the length of the guide neck is 3±0.5 mm.

[0023] Optionally, the inner circumference of the discharge end of the guide neck is chamfered.

[0024] According to the technical content disclosed in the utility model, the following beneficial effects are achieved:

[0025] The utility model provides a limiting ring sleeve at the connection between the feeding end and the contraction end of the funnel device for specific surface loading, and a feeding through hole is opened at the center of the limiting ring sleeve, the feeding through hole connects the feeding part and the guide neck, and the radius of the feeding through hole is smaller than the inner diameter of the guide neck, so that the limiting ring sleeve forms a limiting step at the top of the guide neck. When loading, the pipe mouth of the specific surface tube is inserted from the bottom of the guide neck, and after the pipe mouth of the specific surface tube is inserted to the specified position, the limiting ring sleeve blocks the specific surface tube in the insertion direction of the specific surface tube, and the specific surface tube and the limiting ring sleeve cooperate in the axial upper limit; during the loading process, the pipe mouth of the specific surface tube and the guide neck will not form axial friction, reducing the risk of the pipe mouth of the specific surface tube forming a gap; at the same time, the radius of the feeding through hole is smaller than the inner diameter of the guide neck, and the material entering the specific surface tube from the feeding through hole during loading can accurately enter the interior of the specific surface tube, and will not be scattered in the gap between the outer periphery of the specific surface tube and the inner periphery of the guide neck, reducing the cost loss of the material.

[0026] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0028] Figure 1 It is a cross-sectional view of the funnel device for specific surface loading of the utility model.

[0029] Figure 2 It is a partial cross-sectional view of the funnel device for specific surface area loading of the utility model.

[0030] Explanation of the reference numerals: 1, charging part; 11, flaring end; 12, contraction end; 2, guide neck; 21, feeding end; 22, discharging end; 3, limiting ring sleeve; 31, feeding through hole. DETAILED DESCRIPTION

[0031] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0032] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0033] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0034] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0035] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0036] See also Figure 1 and Figure 2 The utility model discloses a funnel device for specific surface loading, comprising a loading portion 1, a guide neck portion 2 and a limiting ring sleeve 3. The loading portion 1 is funnel-shaped, comprising an expanded end 11 formed at the entrance of the loading portion 1 and a contraction end 12 formed at the exit of the loading portion 1; the guide neck portion 2 is cylindrical, and a feed end 21 of the guide neck portion 2 is connected to the contraction end 12; a limiting ring sleeve 3 is provided at the connection between the feed end 21 and the contraction end 12, and a feed through hole 31 is opened in the axial direction of the limiting ring sleeve 3, the feed through hole 31 connects the loading portion 1 and the guide neck portion 2, and the radius of the feed through hole 31 is smaller than the inner diameter of the guide neck portion 2. When using the funnel device for specific surface area loading of the utility model to load materials, the nozzle of the specific surface tube is inserted into the guide neck 2 from the discharge end 22 at the bottom of the guide neck 2. After the nozzle of the specific surface tube is inserted to the specified position, the limiting ring sleeve 3 blocks the specific surface tube in the insertion direction of the specific surface tube, that is, the nozzle of the specific surface tube abuts against the lower surface of the limiting ring sleeve 3; the material is filled from the flared end 11, and the material flows from the flared end 11 to the contracted end 12 in sequence, and then passes through the feed through hole 31 and enters the interior of the specific surface tube from the nozzle of the specific surface tube; of course, it can be understood that the loading part 1 and the guide neck 2 are coaxially connected in sequence along the feeding direction, so that the material can enter the interior of the specific surface tube more smoothly from the loading part 1, and the feeding path is located at the center of the nozzle of the specific surface tube, and the landing point of the material is located at the center of the nozzle of the specific surface tube, thereby reducing the contact between the material and the wall of the specific surface tube. Preferably, the bottom surface of the limiting ring sleeve 3 is an annular plane, so that the bottom surface of the limiting ring sleeve 3 can be more closely matched with the top surface of the pipe mouth of the specific surface pipe. The radius of the feed hole 31 is r1, the outer diameter of the expanded end 11 of the charging part 1 is r2, and the outer diameter of the guide neck 2 is r3.

[0037] The inner diameter of the feed hole 31 of the limiting ring sleeve 3 is smaller than the inner diameter of the guide neck 2, and the inner diameter of the guide neck 2 is larger than the outer diameter of the feed opening of the specific surface tube. In this way, the lower edge of the limiting ring sleeve 3 can be completely abutted against the top surface of the feed opening of the specific surface tube. The lower edge of the limiting ring sleeve 3 seals the outer periphery of the feed opening of the specific surface tube. When loading the sample, the material will not be scattered to the outside of the specific surface tube, ensuring that the sample enters the specific surface tube completely. Therefore, it can be applied to the loading process of long glass tubes with different apertures, shortening the time and improving the work efficiency.

[0038] Furthermore, the feeding hole 31 of the limiting ring 3 can be a shape in which the inner diameter gradually decreases from top to bottom, wherein the inner diameter of the top of the limiting ring 3 is equal to the inner diameter of the contraction end 12, and the inner diameter of the bottom of the limiting ring 3 is smaller than the inner diameter of the guide neck 2. Such an arrangement can make the charging part, the limiting ring and the guide neck smoothly connected, so that the material can quickly flow into the specific surface tube.

[0039] Of course, it can also be Figure 1 The shape shown, for example, the feed hole 31 includes a first extension section and a second extension section that are axially connected, wherein the inner diameter of the first extension section located at the top gradually decreases from top to bottom, so that the feed hole 31 in the first extension section is similar to an inverted truncated cone, the top of the first extension section is connected to the bottom of the contraction end 12, the inner diameter of the top of the first extension section is equal to the inner diameter of the contraction end 12, the second extension section is connected to the bottom of the first extension section, the inner diameter of the second extension section is a fixed value and equal to the inner diameter of the bottom of the first extension section, and the inner diameter of the second extension section is smaller than the inner diameter of the guide neck 2. Such an arrangement can make the charging part 1, the limiting ring sleeve 3 and the guide neck 2 smoothly connected, so that the material can quickly flow into the specific surface tube. Such an arrangement can further ensure the thickness of the guide neck so that it has sufficient guiding strength. Among them, the guide neck 2 and the limiting ring sleeve 3 are coaxial and integrally formed with the charging part 1, and the guide neck 2 is extended from the contraction end 12 back to the charging part 1. Specifically, the guide neck 2 is extended from the contraction end 12 of the charging part 1 along the axial direction of the charging part 1 and in the direction away from the charging part 1. The guide neck 2 is used to be sleeved on the outside of the inlet of the specific surface tube.

[0040] Furthermore, the wall thickness of the charging part 1 gradually increases from the expansion end 11 to the contraction end 12. By adjusting the wall thickness of the charging part 1 to change the slope of the material discharge surface, the slope is set within the most reasonable range to prevent the material from being discharged too quickly due to the slope being too large, and the material is easily accumulated at the discharge port; it can also prevent the material from being discharged unsmoothly due to the slope being too small, and the work efficiency is low. In the cross section of the charging part, the slope k1 of the inner wall and the slope k2 of the outer wall meet It should be noted that the slope of the inner side wall in this application is based on Figure 1 The direction is based on the tangent value of the angle between the inner wall of the charging part and the horizontal right straight line, that is, Figure 1 The slope of the inner wall relative to the horizontal rightward straight line on the cross section; the slope of the outer wall is calculated in the same way. The side wall thickness d at the contraction end satisfies In the formula, r1 is the radius of the feed hole; r2 is the outer diameter of the expanded end of the charging part; and r3 is the outer diameter of the guide neck. When the above conditions are met, the charging part 1 can have the maximum material flow rate, and can completely guide the sample into the feed hole without part of the material remaining on the top wall of the limiting ring. At the same time, in the utility model, the wall thickness of the charging part 1 gradually increases to increase the stability of the bottom, and is more stable and less likely to tip over than the surface loading funnel device when loading samples.

[0041] Optionally, the charging portion 1, the guide neck 2 and the limiting ring 3 are integrally formed, and the materials thereof are all selected from inorganic non-metallic materials, polymer materials or metal aluminum. Preferably, the material thereof is selected from metal aluminum. The material of the limiting ring is selected from inorganic non-metallic materials or polymer materials, which can play a shock absorbing role on the comparative surface tube and avoid damage to the comparative surface tube.

[0042] Furthermore, the length of the guide neck 2 is 3 cm±0.5 cm. If the guide neck 2 is too short, the fit between the specific surface tube and the guide neck 2 will decrease, and the stability of the guide neck 2 when introducing the material will also decrease.

[0043] Furthermore, the inner circumference of the discharge end 22 of the guide neck 2 is chamfered to facilitate the insertion of the specific surface tube into the guide neck 2 .

[0044] In summary, the setting of the limiting ring sleeve in the funnel device for specific surface loading provided by the utility model can limit the specific surface tube, increase the fit between the specific surface tube and the loading device, and prevent the specific surface tube from being loosely connected to the loading device during loading. For example, it can prevent the feed port of the specific surface tube from extending to the flared end of the loading part. At the same time, when the inner diameter and other dimensions of each part meet the requirements, the material can easily flow into the specific surface tube to avoid the occurrence of material spillage. In addition, the utility model preferably uses aluminum material, which can reduce the dead weight of the loading device and make it lighter when used. Based on the fact that the loading device is mainly used for positive electrode materials, the single crystal product in the positive electrode material is relatively hard in itself, and friction will occur with the inner wall during the loading process. The use of aluminum products will reduce the loss of single crystal products, improve the accuracy of surface testing, and thus improve the stability of the test, shorten the loading time, and improve work efficiency. The use of the specific surface area sample loading funnel device provided by the utility model can greatly improve production efficiency, and the sample loading efficiency is increased from the original 2min / sample to 0.5min / sample. At the same time, the risk of material spillage and the impact of sample tube damage are also reduced, thereby reducing production costs.

[0045] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A funnel device for specific surface loading, characterized in that: include: A loading part and a guide neck part which are coaxially connected in sequence along the feeding direction; The charging portion is funnel-shaped, including an expanded end formed at the inlet of the charging portion and a contracted end formed at the outlet of the charging portion; The guide neck is cylindrical, and the feed end of the guide neck is connected to the contraction end; a limiting ring sleeve is provided at the connection between the feed end and the contraction end, and a feed through hole is opened axially in the limiting ring sleeve, and the feed through hole connects the loading part and the guide neck, and the radius of the feed through hole is smaller than the inner diameter of the guide neck.

2. The funnel device for specific surface loading according to claim 1, characterized in that: The inner diameter of the limiting ring sleeve gradually decreases from top to bottom, wherein the inner diameter of the top of the limiting ring sleeve is equal to the inner diameter of the contraction end, and the inner diameter of the bottom of the limiting ring sleeve is smaller than the inner diameter of the guide neck.

3. The funnel device for specific surface loading according to claim 1 or 2, characterized in that: The guide neck and the limiting ring sleeve are integrally formed with the charging portion. The guide neck is coaxial with the charging portion and is extended from the contraction end back to the charging portion.

4. The funnel device for specific surface loading according to claim 1 or 2, characterized in that: The wall thickness of the charging portion gradually increases from the flared end to the contracted end.

5. The funnel device for specific surface loading according to claim 4, characterized in that: In the cross section of the charging portion, the slope k1 of the inner wall and the slope k2 of the outer wall satisfy 6. The funnel device for specific surface loading according to claim 5, characterized in that: The side wall thickness d of the contraction end satisfies In the formula, r1 is the radius of the feeding hole; r2 is the outer diameter of the flared end of the charging section; r3 is the outer diameter of the guide neck.

7. The funnel device for specific surface loading according to claim 1 or 2, characterized in that: The bottom surface of the limiting ring sleeve is an annular plane.

8. The funnel device for specific surface loading according to claim 1 or 2, characterized in that: The materials of the charging part, the guide neck and the limiting ring sleeve are all selected from inorganic non-metallic materials, polymer materials or metal aluminum.

9. The funnel device for specific surface loading according to claim 1 or 2, characterized in that: The length of the guide neck is 3±0.5 mm.

10. The funnel device for specific surface loading according to claim 1 or 2, characterized in that: The inner circumference of the discharge end of the guide neck is chamfered.

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