Graded screening device for silicon carbide micro powder

Abstract

The utility model discloses a silicon carbide micro-powder grading screening device which comprises a screening body which is of a rectangular structure. The feeding opening is formed in the middle position of the top end of the screening main body and penetrates through the screening main body; the system further comprises; and the screening mechanism comprises a material guiding mechanism and a screening plate, a penetrating opening is reserved, and the screening mechanism corresponds to the top end of the screening plate in position and is used for collecting the screened silicon carbide micro powder. According to the silicon carbide micro-powder grading screening device, the inverted-V-shaped material guiding device is arranged, a large amount of falling silicon carbide micro-powder can be dispersed, and the whole material guiding mechanism is matched with the material guiding device to continuously vibrate under the action of the first vibration mechanism; therefore, the material guiding mechanism can guide materials and control continuous intermittent discharging work of the silicon carbide micro-powder, it is guaranteed that the phenomenon that a large amount of silicon carbide micro-powder falls at a time is avoided, and efficient screening work can be conducted on the silicon carbide micro-powder in a small amount and multiple times.

Description

Technical Field

[0001] The utility model relates to the technical field of silicon carbide micropowder screening, in particular to a silicon carbide micropowder classification and screening device. Background Technique

[0002] When the existing silicon carbide micropowder is processed, it generally needs to be screened by a coarse and fine screening device, and then a classification and screening device needs to be used to screen it;

[0003] The screening devices on the existing market only directly lay a large amount of silicon carbide micropowder above the screening device, and complete the screening work through the vibration of the screening plate inside the screening device. For example, the screening mechanism disclosed in a silicon carbide micropowder coarse and fine screening device with the application number 202322602907.2. However, when screening, although it can carry out the paving and stirring work on the silicon carbide micropowder, due to the small particles of the silicon carbide micropowder, when a large amount of it accumulates on the screening plate for screening, the screening plate is often blocked. Even if it is stirred, due to the relatively thick paving height, the screening efficiency of the whole device is very low. Content of the Utility Model

[0004] The purpose of the utility model is to provide a silicon carbide micropowder classification and screening device to solve the problem proposed in the above background technique that although the existing silicon carbide micropowder classification and screening devices on the market can carry out the paving and stirring work on the silicon carbide micropowder, due to the small particles of the silicon carbide micropowder, when a large amount of it accumulates on the screening plate for screening, the screening plate is often blocked. Even if it is stirred, due to the relatively thick paving height, the screening efficiency of the whole device is very low.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A silicon carbide micropowder classification and screening device, including a screening main body, which is arranged in a rectangular structure;

[0006] A feed inlet, which is arranged at the middle position of the top of the screening main body and is mutually penetrated with the screening main body;

[0007] It also includes;

[0008] A screening mechanism, which is composed of a material guiding mechanism and a screening plate. The screening mechanism is equidistantly arranged in 3 groups inside the screening main body, and the mesh holes on the screening plates of the 3 groups of screening mechanisms decrease in sequence;

[0009] A reserved through hole, which corresponds to the top position of the screening plate and is used for collecting the screened silicon carbide micropowder;

[0010] A vibration mechanism, which is used to control the screening mechanism to carry out vibration screening work;

[0011] There are 2 groups of the feeding mechanisms arranged at equal intervals above the screening plate, and the 2 groups of the feeding mechanisms are arranged in an inverted "V" shape structure. The screening plate is arranged in a positive "V" shape structure, and the middle part thereof is a horizontal mechanism.

[0012] Preferably, the screening device further includes;

[0013] Scraping mechanisms, which are symmetrically arranged in 2 above the screening plate and are used for performing multiple screening operations on the silicon carbide micropowder on the screening plate.

[0014] Preferably, the feeding mechanism includes a feeding plate and a fixed shaft. A circular through hole is provided at the top end of the feeding plate, and it is connected to the fixed shaft through a torsion spring. The two sides of the fixed shaft are fixed on the inner wall of the screening main body;

[0015] The top end of the feeding plate is in contact with the inner wall of the screening main body.

[0016] Preferably, on both sides of the middle position of the screening plate, limiting sliders are fixed. The limiting sliders slide in the sliding grooves on the inner wall of the screening main body and are connected to the sliding grooves through compression springs.

[0017] Preferably, the vibration mechanism includes a first vibration mechanism and a second vibration mechanism, and the two are connected through a transmission mechanism;

[0018] The transmission mechanism includes a pulley, a belt and a driving wheel;

[0019] Both the first vibration mechanism and the second vibration mechanism are composed of a cam and a shaft fixed in the middle of the cam. At the top of the middle shaft of the cam on the second vibration mechanism, a driving wheel is coaxially connected. On both sides of the driving wheel, the positions are respectively connected to the pulley through belts, and the pulley is coaxially connected to the middle shaft of the cam on the first vibration mechanism;

[0020] A driving motor is coaxially connected to the outside of one of the pulleys.

[0021] Preferably, the scraping mechanism includes;

[0022] A pushing plate, which is slidably arranged on the inclined surface of the screening plate. Sliders are integrally installed on both sides thereof. A sliding groove is arranged inside the slider and is engaged and slid with the sliding rail on the outer wall of the screening plate;

[0023] The top end of the slider is connected to one side of a pulling wire, and the other side of the pulling wire is wound around the outside of a wire winding roller. The wire winding rollers on both sides of the pushing plate are connected through a connecting shaft;

[0024] The top end of the wire winding roller on one side is coaxially connected to a motor.

[0025] Compared with the prior art, the beneficial effects of the present utility model are as follows: This silicon carbide micropowder classification and screening device;

[0026] It is provided with a feeding device arranged in an inverted "V" shape, which can disperse a large amount of falling silicon carbide micropowder. Cooperating with the entire feeding mechanism that continuously vibrates under the action of the first vibration mechanism, the feeding mechanism can not only feed but also control the silicon carbide micropowder to perform continuous intermittent feeding work, ensuring that the phenomenon of a large amount of falling at one time does not occur, enabling the silicon carbide micropowder to perform efficient screening work in small amounts and multiple times;

[0027] A scraping mechanism is arranged on the screening plate. When it continuously moves in the middle position of the screening plate, it can drive the silicon carbide micropowder accumulated on the screening plate to perform continuous multiple moving screening operations, achieving a thorough screening effect. When it moves to the uppermost position of the screening plate, it can also push the completely screened silicon carbide micropowder together to the position of the reserved perforation, facilitating subsequent unified recycling work. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic main sectional structure diagram of the present utility model;

[0029] Figure 2 It is a schematic structure diagram of the screening mechanism of the present utility model;

[0030] Figure 3 It is a partial enlarged structure diagram of the top screening plate and the feeding plate of the screening mechanism of the present utility model;

[0031] Figure 4 It is a partial enlarged structure diagram of the middle screening plate and the feeding plate of the screening mechanism of the present utility model.

[0032] In the figure: 1. Screening main body; 2. Feeding port; 3. Feeding mechanism; 31. Feeding plate; 32. Fixed shaft; 4. Screening plate; 41. Limit slider; 42. Compression spring; 5. Reserved through hole; 6. First vibration mechanism; 7. Transmission mechanism; 71. Pulley; 72. Belt; 73. Driving wheel; 8. Driving motor; 9. Scraping mechanism; 91. Winding roller; 92. Motor; 93. Connecting shaft; 94. Pulling wire; 95. Slide block; 96. Pushing plate; 10. Second vibration mechanism. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0034] Please refer to Figures 1-4 , the present utility model provides a technical solution: a silicon carbide micropowder classification and screening device, including a screening main body 1, which is arranged in a rectangular structure;

[0035] A feed inlet 2, which is arranged at the middle position of the top end of the screening main body 1 and penetrates through the screening main body 1;

[0036] It also includes;

[0037] A screening mechanism, which is composed of a material guiding mechanism 3 and a screening plate 4. The screening mechanism is arranged in the screening main body 1 at equal intervals in 3 groups, and the mesh holes on the screening plates 4 of the 3 groups of screening mechanisms decrease in sequence;

[0038] A reserved through hole 5, which corresponds to the top end position of the screening plate 4 and is used for collecting the screened silicon carbide micropowder;

[0039] A vibration mechanism, which is used to control the screening mechanism to perform vibration screening work;

[0040] The material guiding mechanism 3 is arranged at equal intervals above the screening plate 4 in 2 groups, and the 2 groups of material guiding mechanisms 3 are arranged in an inverted "V" shape. The screening plate 4 is arranged in a positive "V" shape, and the middle of it is a horizontal mechanism;

[0041] The present application provides a silicon carbide micropowder classification and screening device with a material guiding mechanism 3. Specifically, when in use, first, the whole device is fixed in a suitable position under the action of the screening main body 1. Then, the silicon carbide micropowder to be screened is poured into the inside of the whole device through the position of the feed inlet 2, and the screening work is carried out through each screening mechanism;

[0042] When screening, first, the silicon carbide micropowder will be guided to both sides through the material guiding mechanism 3. Then, the vibration mechanism is started, so that it drives the whole material guiding mechanism 3 and the screening plate 4 to vibrate together, thus ensuring that the silicon carbide micropowder that intermittently falls on the material guiding mechanism 3 reaches the screening plate 4 and is screened on the screening plate 4 along with the vibration, thus achieving the effect of classification and screening;

[0043] Finally, the screened silicon carbide micropowder can be discharged through the position of the reserved through hole 5.

[0044] According toFigure 2 As shown, in order to ensure that the fine powder can be sieved multiple times, the sieving device further includes;

[0045] Scraping mechanism 9, which is symmetrically arranged above the sieve plate 4 in two numbers, and is used for sieving the silicon carbide fine powder on the sieve plate 4 multiple times;

[0046] Specifically, when the silicon carbide fine powder falling onto the sieve plate 4 is sieved while falling on the vibrating sieve plate 4, it will be blocked by the scraping mechanism 9. Then, by controlling the scraping mechanism 9 to continuously move back and forth at a position slightly below the middle of the sieve plate 4, the accumulated fine powder can be driven to move back and forth, achieving the effect of thorough sieving multiple times.

[0047] In this application, according to Figure 2 As shown, the material guiding mechanism 3 includes a material guiding plate 31 and a fixed shaft 32. A circular through hole is provided at the top of the material guiding plate 31 and is connected to the fixed shaft 32 through a torsion spring, and both sides of the fixed shaft 32 are fixed on the inner wall of the sieving main body 1;

[0048] The top of the material guiding plate 31 is in contact with the inner wall of the sieving main body 1;

[0049] Specifically, when the material guiding mechanism 3 is guiding the material, it will cause the silicon carbide fine powder to move downward along the inclined material guiding plate 31. Since a vibrating mechanism is provided at the top of the material guiding plate 31, it will drive the top of the material guiding plate 31 to continuously rotate around the fixed shaft 32, thereby causing the material guiding plate 31 to continuously separate from and fit with the inner wall of the sieving main body 1, achieving the effect of intermittent feeding.

[0050] Among them, according to Figure 4 As shown, limiting sliders 41 are fixed on both sides of the middle position of the sieve plate 4. The limiting sliders 41 slide in the sliding grooves on the inner wall of the sieving main body 1 and are connected to the sliding grooves through compression springs 42;

[0051] The setting of the limiting sliders 41 and the compression springs 42 can ensure that the entire sieve plate 4 can be reset when vibrating along with the vibrating mechanism, thereby achieving the effect of continuous vibrating sieving.

[0052] Furthermore, according to Figures 3-4 As shown, the vibrating mechanism includes a first vibrating mechanism 6 and a second vibrating mechanism 10, and the two are connected through a transmission mechanism 7;

[0053] The transmission mechanism 7 includes a pulley 71, a belt 72, and a driving wheel 73;

[0054] The first vibration mechanism 6 and the second vibration mechanism 10 are both composed of a cam and a shaft fixed in the middle of the cam. At the top of the middle shaft of the cam on the second vibration mechanism 10, a driving wheel 73 is coaxially connected. On both sides of the driving wheel 73, it is respectively connected to a pulley 71 through a belt 72. The pulley 71 is coaxially connected to the middle shaft of the cam on the first vibration mechanism 6;

[0055] A driving motor 8 is coaxially connected to the outside of one pulley 71;

[0056] Specifically, it is necessary to start the driving motor 8 to drive the driving wheel 73 at its top to rotate. When the driving wheel 73 rotates, the belts 72 on both sides will drive the pulleys 71 at their tops to rotate;

[0057] Since the top of the driving wheel 73 is connected to the middle shaft of the cam inside the second vibration mechanism 10, the cam on the second vibration mechanism 10 will rotate, completing the vibration work of the screening plate 4;

[0058] Since the top of the pulley 71 is connected to the middle shaft of the cam inside the first vibration mechanism 6, the cam on the first vibration mechanism 6 will rotate, thereby driving the guide plate 31 to rotate for discharging materials.

[0059] As a further preference of this embodiment, according to Figures 3-4 shown, the scraping mechanism 9 includes;

[0060] A pushing plate 96 is slidably arranged on the inclined surface of the screening plate 4. On both sides of it, sliders 95 are integrally installed. Inside the sliders 95, there are chutes that are engaged and slid with the slide rails on the outer wall of the screening plate 4;

[0061] The top of the slider 95 is connected to one side of a wire 94, and the other side of the wire 94 is wound around the outside of a winding roller 91. Between the winding rollers 91 on both sides of the pushing plate 96, they are connected through a connecting shaft 93;

[0062] The top of the winding roller 91 on one side is coaxially connected to a motor 92;

[0063] Specifically, when controlling the movement of the pushing plate 96, the motor 92 can be started to drive the winding roller 91 at its top to rotate. When the winding roller 91 rotates, it will drive the wire 94 to wind and unwind, so that the wire 94 drives the slider 95 to move. Thus, the slider 95 drives the pushing plate 96 to move back and forth, completing multiple screening operations;

[0064] In this application, the sliding grooves and sliding rails inside the slider 95 are both smooth surfaces, ensuring that the slider 95 above can automatically fall under the action of gravity when it is above. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0065] Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A silicon carbide powder grading and screening device, comprising: A screening body (1) is arranged in a rectangular structure; A feed inlet (2), which is arranged at the middle position of the top of the screening body (1) and penetrates the screening body (1); Features: Also includes; A screening mechanism, comprising a material guide mechanism (3) and a screening plate (4), wherein three groups of the screening mechanism are arranged at equal intervals inside the screening body (1), and the mesh openings on the screening plates (4) on the three groups of screening mechanisms decrease in sequence; A reserved opening (5) corresponding to the top position of the sieving plate (4) is used for collecting the sieving silicon carbide micropowder; Vibration mechanism, used to control the screening mechanism to perform vibration screening work; Two groups of the material guide mechanisms (3) are arranged at equal intervals above the screening plate (4), and the two groups of the material guide mechanisms (3) are arranged in an inverted "V"-shaped structure, and the screening plate (4) is arranged in a positive "V"-shaped structure, with the middle portion being a horizontal structure.

2. A silicon carbide powder grading and screening device according to claim 1, characterized in that: The screening device also includes: Two scraping mechanisms (9) are symmetrically arranged above the screening plate (4) and are used to perform multiple screening operations on the silicon carbide micropowder on the screening plate (4).

3. The silicon carbide powder grading and screening device according to claim 1, characterized in that: The material guide mechanism (3) comprises a material guide plate (31) and a fixed shaft (32); a circular through hole is provided at the top end of the material guide plate (31) and is connected to the fixed shaft (32) via a torsion spring, and two sides of the fixed shaft (32) are fixed to the inner wall of the screening body (1); The top end of the guide plate (31) contacts the inner wall of the screening body (1).

4. The silicon carbide powder grading and screening device according to claim 1, characterized in that: Limiting slide blocks (41) are fixed on both sides of the middle position of the screening plate (4); the limiting slide blocks (41) slide in the slide grooves on the inner wall of the screening body (1) and are connected to the slide grooves via compression springs (42).

5. The silicon carbide powder grading and screening device according to claim 1, characterized in that: The vibration mechanism comprises a first vibration mechanism (6) and a second vibration mechanism (10), which are connected via a transmission mechanism (7); The transmission mechanism (7) comprises a pulley (71), a belt (72) and a driving wheel (73); The first vibration mechanism (6) and the second vibration mechanism (10) are both composed of a cam and a shaft fixed in the middle of the cam, the top end of the middle shaft of the cam on the second vibration mechanism (10) is coaxially connected to a driving wheel (73), and the two sides of the driving wheel (73) are respectively connected to the pulley (71) through belts (72), and the pulley (71) is coaxially connected to the middle shaft of the cam on the first vibration mechanism (6); A driving motor (8) is coaxially connected to the outside of one of the pulleys (71).

6. A silicon carbide powder grading and screening device according to claim 2, characterized in that: The scraping mechanism (9) comprises: A push plate (96) is slidably arranged on the inclined surface of the screening plate (4), and sliders (95) are integrally installed on both sides of the push plate. The inner side of the slider (95) is provided with a slide groove that engages and slides with a slide rail on the outer wall of the screening plate (4); The top end of the slider (95) is connected to one side of the pull wire (94), and the other side of the pull wire (94) is wound around the outside of the winding roller (91), and the winding rollers (91) on both sides of the push plate (96) are connected via a connecting shaft (93); The top end of the winding roller (91) on one side is coaxially connected to the motor (92).

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