Graphite powder multistage screening device

Abstract

The utility model discloses a multistage screening device for graphite powder, and belongs to the technical field of stone mill processing. Comprising a vertically-arranged screening cylinder, and multiple layers of screens are arranged in the screening cylinder from top to bottom; the screen is of a conical structure protruding upwards. The spiral strip is attached to the upper part of the screen; and the transmission shaft is located at the middle axis position of the screening barrel, vertically penetrates through the screen, is connected with the spiral strips and then penetrates upwards to the outside. According to the graphite powder screening device, the spiral strips attached to the screen cloth are used for scraping graphite powder, accumulation and blocking are avoided, and the screening efficiency is improved; the outer edge of the screen is sunken downwards to form a discharging groove, the screened graphite powder falls into the discharging groove, and discharging is convenient; and the sieve holes are formed in the bottom plate of the discharging groove, further sieving can be achieved, and the overall sieving reliability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of graphite processing, in particular to a multi-stage screening device for graphite powder. Background Art

[0002] After processing, graphite powder needs to be screened to distinguish graphite powders of different crushing degrees and store them in grades. For example, the patent with application number "CN201921596064.7" discloses a screening device for graphite powder with multi-stage screening function, including a base, a vibration isolator fixedly connected to the bottom end of the base, a cylinder fixedly connected to the top end of the base, a spring wound on the outer surface of the cylinder, a mounting plate fixedly connected to the top end of the cylinder, a vibration motor fixedly connected to the middle of the bottom end of the mounting plate, a positioning ring welded to the top edge of the mounting plate, a sealing ring bonded to the top end of the positioning ring, a screen box placed at the top end of the positioning ring, a support block welded to the bottom end of the inner side of the screen box, an upper screen plate placed at the top end of the support block, an adjustment plate rotatably connected to the middle of the top end of the upper screen plate, and a lower screen plate fixedly connected to the bottom end of the adjustment plate. The upper screen plate, the lower screen plate and the adjustment plate provided in the utility model can quickly adjust the size of the screened graphite particles without complicated operations, thereby improving work efficiency.

[0003] However, during the screening process, the sieve holes are easily blocked, which directly affects the screening effect. Therefore, some auxiliary components are designed to prevent the sieve holes from being blocked in large quantities.

[0004] For example, the patent with application number "CN202121186112.2" discloses a graphite screening device with multi-stage screening function, which belongs to the technical field of graphite processing equipment, including a base, on which a screening box is arranged, and the first screening chamber, the second screening chamber and the third screening chamber are arranged in sequence from top to bottom in the screening box, and a discharge port is arranged at the bottom of the third screening chamber, and a first brush and a first screen are arranged in the first screening chamber at the bottom, a fine grinding assembly, a second screen and a second brush are arranged in the second screening chamber, and a third brush and a third screen are arranged in the third screening chamber, and a first material receiving trough, a second material receiving trough and a third material receiving trough are respectively arranged between the first screen, the second screen and the third screen and the screening box for receiving the screened material.

[0005] The above device cleans the screen by a brush. However, its movement setting is cumbersome, lacks reliability, and is not conducive to later maintenance. At the same time, the brush is easy to drop bristles, which is also inappropriate. In addition, the screening efficiency of the screen with the brush is low. Utility Model Content

[0006] The utility model aims to solve the above problems in the prior art and proposes a multi-stage screening device for graphite powder.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A graphite powder multi-stage screening device comprises a vertically arranged screening cylinder, wherein multiple layers of screens are arranged inside the screening cylinder from top to bottom; the screens are upwardly protruding conical structures;

[0009] It also includes: a spiral strip arranged above the screen;

[0010] It also includes: a transmission shaft located at the center axis of the screening cylinder, vertically penetrating the screen, connecting each spiral strip, and penetrating upward to the outside.

[0011] In some embodiments, ribs are arranged around the top of the spiral strip.

[0012] In some embodiments, the outer edge of the screen is concave downward to form a surrounding discharge chute;

[0013] The screening cylinder is provided with a discharge port corresponding to the discharge trough.

[0014] In some embodiments, the bottom plate of the discharge chute is provided with sieve holes consistent with the sieve.

[0015] In some embodiments, a scraper that fits the discharge chute is provided at the end of the rib.

[0016] In some embodiments, it also includes: a ring that penetrates and connects all the scrapers.

[0017] In some embodiments, a top cover is provided above the screening cylinder;

[0018] The top cover is provided with a feed port.

[0019] In some embodiments, the feed inlet is arranged in plurality.

[0020] Compared with the prior art, the utility model provides a graphite powder multi-stage screening device, which has the following beneficial effects.

[0021] 1. In the utility model, the screen is an upwardly protruding conical structure, which forms a larger screening surface, can speed up screening and improve screening efficiency; spiral strips are arranged in close contact with the screen to scrape the graphite powder to avoid accumulation and blockage, further improving the screening efficiency; and the movement is stable and reliable.

[0022] 2. In the utility model, the outer edge of the screen is recessed downward to form a discharge trough, into which the screened graphite powder falls, making it easier to discharge. Screen holes are provided on the bottom plate of the discharge trough for further screening, thereby improving the overall screening reliability and reducing inappropriate inclusions. A scraper is provided to stir the graphite powder in the discharge trough to accelerate screening or discharge. A plurality of feed ports are provided around the feed port to speed up feeding and make the feed distribution more uniform.

[0023] Other advantages, objectives and features of the present invention will be described in the following description to some extent; and will be apparent to those skilled in the art based on the following examination and study to some extent; or, may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the utility model.

[0025] Figure 2 It is a partial cross-sectional structural schematic diagram of the utility model.

[0026] Figure 3 It is a partial cross-sectional structural schematic diagram of the utility model.

[0027] Figure 4 for Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0028] Figure 5 It is a partial cross-sectional structural front view of the utility model.

[0029] Figure 6 for Figure 5 Schematic diagram of the enlarged structure at point B in the middle.

[0030] Figure 7 Schematic diagram of the spiral strip structure.

[0031] Figure 8 This is the front view of the spiral strip.

[0032] Fig. 9 A top view of the spiral strip.

[0033] In the figure:

[0034] 1. Screening cylinder; 2. Screen; 3. Spiral strips; 31. Ribs; 4. Transmission shaft; 5. Discharge chute; 6. Discharge port; 7. Scraper; 71. Ring; 8. Top cover; 9. Feed port. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0036] Reference Figure 1-9 A graphite powder multi-stage screening device comprises a vertically arranged screening cylinder 1; the screening cylinder 1 is a cylindrical structure, and multiple layers of screens 2 are arranged inside the screening cylinder 1 from top to bottom; the screen holes gradually become smaller from top to bottom to form multi-stage screening.

[0037] Among them, the screen 2 is an upwardly protruding conical structure, forming a larger screening surface; and, compared with the flat shape, the inclined screen surface can speed up screening and further improve the screening efficiency.

[0038] In some embodiments, it also includes: spiral bars 3 arranged above the screen 2; the graphite powder is scraped by the movement of the spiral bars 3 to avoid its accumulation and blockage, thereby further improving the screening efficiency.

[0039] At the same time, it also includes: a transmission shaft 4 located at the central axis position of the screening cylinder 1, vertically penetrating the screen 2, and after connecting each spiral strip 3, penetrating upward to the outside.

[0040] Thus, the spiral strips 3 are connected as a whole through a transmission shaft 4 for overall driving; accordingly, a driving assembly connected to the transmission shaft 4 is provided on the outside.

[0041] It can be understood that during operation, the spiral strips 3 are rotating to transport graphite powder from the middle to the periphery.

[0042] In some embodiments, ribs 31 are disposed around the upper side of the spiral strip 3 .

[0043] like Figure 7-9 As shown, the plurality of ribs 31 improve the stability of the spiral strip 3 and prevent it from undergoing a large deformation.

[0044] It should be noted that the ribs 31 are fixed above the spiral strips 3 and do not divide the space between the spiral strips 3, and do not affect the pushing operation of the graphite powder.

[0045] In some embodiments, the outer edge of the screen 2 is recessed downward to form a surrounding discharge trough 5 ; correspondingly, a discharge port 6 corresponding to the discharge trough 5 is opened on the screening cylinder 1 .

[0046] like Figure 2-6 As shown, a downward discharge groove 5 is formed at the outer edge; the screened graphite powder falls into the groove, which is more convenient for discharge.

[0047] In some embodiments, the bottom plate of the discharge chute 5 is provided with sieve holes consistent with the sieve.

[0048] It should be noted that during the screening process, some graphite powder that meets the requirements will fall into the discharge trough 5 along with the larger graphite powder; at this time, further screening can be performed through the sieve holes of the discharge trough 5 to improve the overall screening reliability and reduce inappropriate inclusions.

[0049] It can be understood that the sieve holes of the discharge chute 5 are consistent with the sieve holes of the corresponding sieve 2, and they are the same level of screening.

[0050] In some embodiments, a scraper 7 is provided at the end of the rib 31 to fit the discharge chute 5 .

[0051] like Figure 2 , 7 , 8; the scraper 7 at the end moves the graphite powder in the discharge trough 5 to accelerate the screening or discharge.

[0052] In some embodiments, it also includes: a ring 71 that penetrates and connects all the scrapers 7.

[0053] It is understandable that the scrapers 7 with independent ends are subject to resistance during operation and are prone to bending and deformation. By adding the ring 71, a circumferential force is applied thereto to keep it in a stable state.

[0054] In some embodiments, a top cover 8 is disposed above the screening drum 1 ; a feed port 9 is disposed on the top cover 8 for feeding.

[0055] Furthermore, a plurality of feed ports 9 are arranged around the feed port, which can speed up the feed and make the feed distribution more uniform.

[0056] When the utility model is used, the transmission shaft 4 is driven by an external power to drive the spiral strips 3 to rotate; the graphite powder to be screened is added through the feed port 9; the graphite powder falls on the screen 2, part of which falls directly, and part of which falls during the outward movement driven by the spiral strips 3; the oversized material enters the discharge trough 5 and is moved out; the multiple layers of screens 2 work separately to form a multi-stage screening operation.

[0057] In the utility model, the screen 2 is an upwardly protruding conical structure, which forms a larger screening surface, can speed up screening and improve screening efficiency; spiral bars 3 are arranged in close contact with the screen 2 to scrape the graphite powder to avoid accumulation and blockage, and further improve screening efficiency; and the movement is stable and reliable; the outer edge of the screen 2 is recessed downward to form a discharge trough 5, into which the screened graphite powder falls, which is more convenient for discharge; sieve holes are provided on the bottom plate of the discharge trough 5, which can further perform screening, improve the overall screening reliability, and reduce inappropriate inclusions; a scraper 7 is arranged to stir the graphite powder in the discharge trough 5, so that it is accelerated to be screened or discharged; a plurality of feed ports 9 are arranged around the feed port to speed up feeding and make the feed distribution more uniform.

[0058] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0059] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0060] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A graphite powder multi-stage screening device, comprising a screening cylinder (1) arranged vertically, wherein multiple layers of screens (2) are arranged inside the screening cylinder (1) from top to bottom; characterized in that: The screen (2) is a conical structure protruding upwards; It also includes: a spiral strip (3) arranged above the fitted screen (2); It also includes: a transmission shaft (4) located at the center axis of the screening cylinder (1), vertically penetrating the screen (2), connecting each spiral strip (3), and penetrating upward to the outside.

2. The graphite powder multi-stage screening device according to claim 1, characterized in that: Ribs (31) are arranged around the upper side of the spiral strip (3).

3. The graphite powder multi-stage screening device according to claim 2, characterized in that: The outer edge of the screen (2) is concave downward to form a surrounding discharge trough (5); The screening cylinder (1) is provided with a discharge port (6) corresponding to the discharge trough (5).

4. The graphite powder multi-stage screening device according to claim 3, characterized in that: The bottom plate of the discharge trough (5) is provided with sieve holes consistent with the sieve.

5. The graphite powder multi-stage screening device according to claim 4, characterized in that: The end of the rib (31) is provided with a scraper (7) that fits the discharge chute (5).

6. The graphite powder multi-stage screening device according to claim 5, characterized in that: Also includes: A ring (71) is formed to connect all scrapers (7).

7. The graphite powder multi-stage screening device according to claim 1, characterized in that: A top cover (8) is provided above the screening cylinder (1); The top cover (8) is provided with a feed port (9).

8. The graphite powder multi-stage screening device according to claim 7, characterized in that: The feed opening (9) is arranged in a plurality around it.

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