Graphite particle size analyzer

Abstract

The utility model provides a graphite particle size analyzer, which solves the problems of insufficient graphite particle size detection precision and the like, and comprises a cylindrical analyzer main body, a material screening net which is arranged in a laminated manner is arranged in the analyzer main body, a sensing element is arranged between the material screening net and the analyzer main body, and an ultrasonic assembly is arranged at the lower end of the analyzer main body. A graded feeding assembly is mounted at the upper end of the analyzer main body. The device has the advantages of high detection precision, stable operation and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of graphite detection, and in particular relates to a graphite particle size analyzer. Background Art

[0002] There are many technical indicators of graphite negative electrode materials, and it is difficult to take them all into account, mainly including specific surface area, particle size distribution, tap density, compacted density, true density, first charge and discharge specific capacity, first efficiency, etc. The effect of the particle size of graphite negative electrode materials on their electrochemical properties is manifested in that the particle size of the negative electrode material will directly affect the tap density and specific surface area of ​​the material. The size of the tap density will directly affect the volume energy density of the material. Only the appropriate material particle size distribution can maximize the performance of the material. However, in the actual production and processing process, the existing graphite particle size detection efficiency is relatively low, and it is inconvenient to carry out continuous detection. If conventional sensor detection is used, its detection accuracy cannot be guaranteed, resulting in large errors in graphite particle size analysis.

[0003] In order to solve the shortcomings of the existing technology, people have conducted long-term exploration and proposed various solutions. For example, a Chinese patent document discloses a method for testing the distribution of graphite particle size [201711351874.1], which includes the following steps: preparing a lightweight and small graphite particle size tester that can be directly moved to the production site for operation; using an adsorption device to collect graphite materials into the graphite particle size tester; an ultrasonic vibration device emits ultrasonic waves to disperse the agglomerated graphite materials, leaving the larger graphite on the first-level screening and weighing device, the smaller graphite falling to the second-level screening and weighing device, and the smallest graphite falling to the third-level screening and weighing device, thereby classifying particles of different particle sizes; after the classification is completed, the respective graphite materials are weighed to obtain the powder content of each particle size range, and finally the content of each particle size range is calculated through the intelligent control center.

[0004] The above solution solves the problem of low efficiency of graphite particle size detection to a certain extent, but the solution still has many shortcomings, such as decreased continuous detection accuracy. Summary of the invention

[0005] The utility model aims to solve the above problems and provide a graphite particle size analyzer with reasonable design and high detection accuracy.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a graphite particle size analyzer, including a cylindrical analyzer body, a stacked sieve mesh installed inside the analyzer body, a sensor element installed between the sieve mesh and the analyzer body, an ultrasonic component installed at the lower end of the analyzer body, and a graded feed component installed at the upper end of the analyzer body.

[0007] In the above-mentioned graphite particle size analyzer, the analyzer body includes a main cylinder, a support seat is installed at the bottom of the main cylinder, a damping component is arranged between the support seat and the main cylinder, and a plug-in component is arranged between the main cylinder and the sieve net.

[0008] In the above-mentioned graphite particle size analyzer, the damping assembly includes a mounting groove arranged in a centrally symmetrical manner relative to the support seat, a mounting protrusion fixed to the lower end of the main cylinder and plugged into the mounting groove in a one-to-one correspondence, a damping gasket made of elastic material is fixed between the mounting protrusion and the mounting groove, and the support seat has a mounting rod extending vertically upward, and a damping block made of elastic material is pressed and fixed between the mounting rod and the outer side of the main cylinder.

[0009] In the above-mentioned graphite particle size analyzer, the plug-in assembly includes plug-in grooves arranged one by one from top to bottom on the main cylinder, a limiting sleeve is slidably installed on the outer side of the main cylinder, the limiting sleeve has a limiting groove corresponding to the plug-in groove, and elastic reset parts are respectively installed between the limiting sleeve and the main cylinder and between the screen mesh and the main cylinder.

[0010] In the above-mentioned graphite particle size analyzer, the sieve mesh comprises a ring-shaped mesh frame, a guide cone surface is arranged on the inner side of the upper end of the mesh frame, and a sieve mesh is installed on the inner side of the mesh frame.

[0011] In the above-mentioned graphite particle size analyzer, the mesh size of the screen increases step by step from top to bottom.

[0012] In the above-mentioned graphite particle size analyzer, the ultrasonic component includes a transducer installed at the lower end of the analyzer body, the transducer is connected to the analyzer body through an amplitude transformer, and the transducer is connected to the ultrasonic control box.

[0013] In the above-mentioned graphite particle size analyzer, the graded feed assembly includes a feed funnel installed at the upper end of the analyzer body, the feed funnel has a feed pipe extending into the inside of the analyzer body, and the feed pipe is equipped with a material dividing assembly.

[0014] In the above-mentioned graphite particle size analyzer, the dividing assembly includes upper and lower dividing racks, the dividing racks are provided with dividing openings arranged in a central symmetrical manner, the dividing racks are rotatably connected to dividing plates that close the dividing openings, the dividing plates are provided with drop openings that are relatively connected to the dividing openings, and a driving assembly is installed between the dividing plates and the feed pipe.

[0015] In the above-mentioned graphite particle size analyzer, the driving assembly includes a driving gear ring fixedly installed along the circumference of the dividing plate, the driving gear ring is meshed with the driving gear for transmission, the driving gear is meshed with the driving motor through the driving rod and the speed change gear set, and the driving gear is a missing gear.

[0016] Compared with the existing technology, the advantages of the utility model are: the graded feeding component feeds quantitatively and graded materials toward the inside of the analyzer body, and cooperates with the screen mesh and the sensor element to continuously detect the graphite particle size, thereby ensuring the accuracy of graphite particle size detection; the ultrasonic component drives the screen mesh to vibrate at high frequency to ensure that the graphite is evenly distributed and screened; the damping component reduces the vibration of the support seat when the ultrasonic component is started, thereby reducing its working noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a partial cross-sectional view of the utility model;

[0019] Figure 3 It is a partial cross-sectional view of the utility model;

[0020] Figure 4 It is a partial cross-sectional view of the utility model;

[0021] In the figure, there are analyzer body 1, main cylinder 11, support seat 12, mounting groove 13, mounting protrusion 14, damping gasket 15, mounting rod 16, damping block 17, sieve net 2, grid 21, guide cone 22, sieve 23, ultrasonic component 3, transducer 31, amplitude transformer 32, ultrasonic control box 33, graded feeding component 4, feeding funnel 41, feeding pipe 42, dividing rack 43, dividing port 44, dividing plate 45, dropping port 46, driving gear ring 47, driving gear 48, driving motor 49, plug-in component 5, plug-in groove 51, limiting sleeve 53, limiting groove 54. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0023] like Figure 1-4 As shown, a graphite particle size analyzer includes a cylindrical analyzer body 1, wherein a stacked sieve mesh 2 is installed inside the analyzer body 1 to sieve graphite layer by layer, and a sensing element is installed between the sieve mesh 2 and the analyzer body 1. A pressure sensor is usually selected to detect the weight of graphite on each sieve mesh 2, and multiple pressure sensors are evenly distributed around the sieve mesh 2 to improve its detection accuracy. An ultrasonic component 3 is installed at the lower end of the analyzer body 1 to drive the sieve mesh 2 to vibrate at a high frequency, and a graded feeding component 4 is installed at the upper end of the analyzer body 1 to guide the quantitative feeding of graphite, and the graphite particle size is continuously detected by the sensing element to ensure the accuracy of particle size analysis.

[0024] Specifically, the analyzer body 1 is made of stainless steel as a whole, and specifically includes a main cylinder 11. A support base 12 that is relatively solid to the ground is installed at the bottom of the main cylinder 11. A damping assembly is arranged between the support base 12 and the main cylinder 11. When the main cylinder 11 vibrates at a high frequency, the damping assembly reduces vibration and buffers the support base 12. A plug-in assembly 5 is arranged between the main cylinder 11 and the screen net 2 to facilitate replacement and adjustment of the screen net 2.

[0025] In depth, the damping assembly includes a mounting groove 13 arranged in a central symmetric manner relative to the support seat 12, a mounting protrusion 14 is fixed at the lower end of the main cylinder 11 and is plugged into the mounting groove 13 in a one-to-one correspondence, a damping pad 15 made of elastic material is fixed between the mounting protrusion 14 and the mounting groove 13, the support seat 12 has a mounting rod 16 extending vertically upward, and a damping block 17 made of elastic material is pressed and fixed between the mounting rod 16 and the outer side of the main cylinder 11. The damping pad 15 and the damping block 17 keep the support seat 12 and the main cylinder 11 isolated, and the vertically arranged mounting rod 16 plays a corresponding limiting role.

[0026] Furthermore, in order to facilitate the adjustment of the sieve net 2, a plug-in assembly 5 is used to movably assemble it, which specifically includes plug-in slots 51 arranged one by one from top to bottom on the main cylinder 11, a limiting sleeve 53 is slidably installed on the outer side of the main cylinder 11, and the limiting sleeve 53 is provided with a limiting slot 54 corresponding to the plug-in slot 51, and elastic reset members are respectively installed between the limiting sleeve 53 and the main cylinder 11 and between the sieve net 2 and the main cylinder 11. When the sieve net 2 is inserted into the plug-in slot 51, the limiting sleeve 53 returns to the initial position under the action of the elastic reset member, and the limiting slot 54 is misaligned with the plug-in slot 51 so that the limiting sleeve 53 closes the plug-in slot 51.

[0027] Furthermore, the screen mesh 2 includes an annular grid 21 for being fixedly connected with the insertion groove 51 , a guide cone 22 is arranged on the inner side of the upper end of the grid 21 to ensure that the graphite is concentrated on the screen 23 , and screens 23 of different mesh sizes are installed on the inner side of the grid 21 .

[0028] In addition, the mesh size of the screen 23 increases step by step from top to bottom, and the graphite is filtered by the screen 23 and falls step by step. The particle size of the graphite on the screen 23 also increases gradually. By collecting the proportion of graphite in each layer, the comprehensive particle size of the batch of graphite can be determined.

[0029] At the same time, similar to the conventional ultrasonic vibration structure, the ultrasonic component 3 in the present application includes a transducer 31 installed at the lower end of the analyzer body 1, the transducer 31 is connected to the analyzer body 1 through the horn 32, and the transducer 31 is connected to the ultrasonic control box 33. The ultrasonic control box 33 controls the power of the transducer 31, thereby adjusting the amplitude of the horn 32 to ensure that the graphite is evenly distributed relative to the sieve mesh 2.

[0030] It can be seen that the existing graphite particle size analysis structure usually adopts a one-time feeding test, while the graded feeding assembly 4 in the present application performs batch feeding, including a feeding funnel 41 installed at the upper end of the analyzer body 1, the feeding funnel 41 has a feeding pipe 42 extending to the inside of the analyzer body 1, and the feeding pipe 42 is equipped with a material dividing assembly. The material dividing assembly controls the on-off of the feeding pipe 42, and the single batch feeding amount is adjusted by adjusting the specifications of the material dividing assembly.

[0031] Obviously, the material distribution assembly includes a material distribution frame 43 facing each other, the material distribution frame 43 is provided with material distribution openings 44 arranged symmetrically in the center, the material distribution frame 43 is rotatably connected with a material distribution plate 45 that closes the material distribution openings 44, the material distribution plate 45 is provided with a material drop opening 46 that is relatively connected to the material distribution openings 44, and a driving assembly is installed between the material distribution plate 45 and the feed pipe 42. By adjusting the relative distance of the material distribution frame 43, the internal capacity of the material distribution assembly can be controlled, thereby flexibly adjusting the material discharge amount.

[0032] Preferably, the driving assembly includes a driving gear ring 47 fixedly installed along the circumference of the material distribution plate 45, the driving gear ring 47 is meshed with a driving gear 48 for transmission, the driving gear 48 is meshed with a driving motor 49 through a driving rod and a speed change gear set for transmission, and the driving gear 48 is a missing gear. The driving motor 49 provides a rotational torque for the driving gear 48. Since the driving gear 48 is a missing gear, the driving gear ring 47 periodically rotates a fixed angle, thereby driving the blanking port 46 to be misaligned or separated from the material distribution port 44. The material distribution ports 44 of the upper and lower opposite material distribution racks 43 are selectively opened to achieve alternating feeding and discharging.

[0033] In summary, the principle of this embodiment is that the graded feeding component 4 temporarily stores graphite and controls the quantitative input of graphite into the analyzer body 1 in batches. The graphite is filtered by the sieve mesh 2 and falls step by step. The sensor element detects the proportion of graphite of different particle sizes, thereby comprehensively judging the particle size of the batch of graphite.

[0034] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0035] Although the analyzer body 1, main cylinder 11, support seat 12, mounting groove 13, mounting protrusion 14, damping pad 15, mounting rod 16, damping block 17, sieve net 2, mesh frame 21, guide cone 22, sieve 23, ultrasonic component 3, transducer 31, amplitude transformer 32, ultrasonic control box 33, graded feeding component 4, feeding funnel 41, feeding pipe 42, material distribution frame 43, material distribution port 44, material distribution plate 45, material drop port 46, driving gear ring 47, driving gear 48, driving motor 49, plug-in component 5, plug-in groove 51, limit sleeve 53, limit groove 54 and other terms are used more frequently in this article, the possibility of using other terms is not excluded. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A graphite particle size analyzer, comprising a cylindrical analyzer body (1), wherein a stacked sieve mesh (2) is installed inside the analyzer body (1), and a sensor element is installed between the sieve mesh (2) and the analyzer body (1), characterized in that: An ultrasonic component (3) is installed at the lower end of the analyzer main body (1), and a graded feed component (4) is installed at the upper end of the analyzer main body (1).

2. A graphite particle size analyzer according to claim 1, characterized in that: The analyzer body (1) comprises a main cylinder (11), a support seat (12) is installed at the bottom of the main cylinder (11), a damping component is arranged between the support seat (12) and the main cylinder (11), and a plug-in component (5) is arranged between the main cylinder (11) and the sieve net (2).

3. A graphite particle size analyzer according to claim 2, characterized in that: The damping assembly comprises a mounting groove (13) arranged in a central symmetric manner relative to the support seat (12); a mounting protrusion (14) is fixed at the lower end of the main cylinder (11) and is plugged into the mounting groove (13) in a one-to-one correspondence; a damping gasket (15) made of elastic material is fixed between the mounting protrusion (14) and the mounting groove (13); the support seat (12) has a mounting rod (16) extending vertically upward; a damping block (17) made of elastic material is pressed and fixed between the mounting rod (16) and the outer side of the main cylinder (11).

4. A graphite particle size analyzer according to claim 2, characterized in that: The plug-in assembly (5) comprises plug-in slots (51) arranged one by one from top to bottom on the main cylinder (11); a limit sleeve (53) is slidably mounted on the outer side of the main cylinder (11); the limit sleeve (53) is provided with a limit slot (54) corresponding to the plug-in slot (51); elastic reset parts are respectively mounted between the limit sleeve (53) and the main cylinder (11) and between the screening net (2) and the main cylinder (11).

5. A graphite particle size analyzer according to claim 1, characterized in that: The screening net (2) comprises an annular mesh frame (21), a guiding cone surface (22) is arranged on the inner side of the upper end of the mesh frame (21), and a screening net (23) is installed on the inner side of the mesh frame (21).

6. A graphite particle size analyzer according to claim 5, characterized in that: The mesh size of the screen (23) increases gradually from top to bottom.

7. A graphite particle size analyzer according to claim 1, characterized in that: The ultrasonic component (3) comprises a transducer (31) installed at the lower end of the analyzer body (1); the transducer (31) is connected to the analyzer body (1) via an amplitude transformer (32); and the transducer (31) is connected to an ultrasonic control box (33).

8. A graphite particle size analyzer according to claim 1, characterized in that: The graded feed assembly (4) comprises a feed funnel (41) mounted on the upper end of the analyzer body (1), the feed funnel (41) having a feed pipe (42) extending into the interior of the analyzer body (1), and the feed pipe (42) is equipped with a material dividing assembly.

9. A graphite particle size analyzer according to claim 8, characterized in that: The material distribution component includes a material distribution frame (43) opposite to each other in an upper and lower direction, and the material distribution frame (43) is provided with material distribution openings (44) arranged in a central symmetrical manner. The material distribution frame (43) is rotatably connected to a material distribution plate (45) that closes the material distribution opening (44), and the material distribution plate (45) is provided with a drop opening (46) that is relatively connected to the material distribution opening (44). A driving component is installed between the material distribution plate (45) and the feed pipe (42).

10. A graphite particle size analyzer according to claim 9, characterized in that: The driving assembly comprises a driving gear ring (47) fixedly installed along the circumference of the material dividing plate (45); the driving gear ring (47) is meshed with a driving gear (48) for transmission; the driving gear (48) is meshed with a driving motor (49) for transmission via a driving rod and a speed gear set; the driving gear (48) is a missing gear.

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