Self-cleaning anti-static sieve plate

Abstract

The invention belongs to the field of sieve plate equipment, and particularly relates to a self-cleaning anti-static sieve plate which comprises a screening box, a mounting frame device, a driving mechanism, a cleaning roller device and an electrostatic eliminating device, the mounting frame device comprises a U-shaped mounting frame, the mounting frame is fixedly mounted on the inner wall of the screening box, and a sieve plate body is detachably mounted at the lower end of the mounting frame; dustproof cavities are symmetrically formed in the inner sides of the two side frames of the mounting frame, the driving mechanism comprises driving lead screws and sliding tables, the driving lead screws are rotationally connected into the dustproof cavities, one ends of the driving lead screws are in transmission connection with servo motors, the two driving lead screws are in transmission connection with the sliding tables, and the cleaning roller device is rotationally connected between the two sliding tables. According to the self-cleaning anti-static device, the self-cleaning function and the anti-static function are achieved at the same time, the self-cleaning mechanism and the anti-static mechanism work and operate in a matched mode, the dustproof effect and the anti-static effect of the self-cleaning mechanism can be improved at the same time, and the working efficiency of equipment is greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of sieve plate equipment, and specifically relates to a self-cleaning anti-static sieve plate. Background Technology

[0002] Self-cleaning and anti-static capabilities are crucial for screen plates, as they are essential for ensuring efficient, safe, and high-quality screening processes. The self-cleaning function effectively prevents material from clogging the screen openings, ensuring consistently high screening efficiency and accuracy, maintaining production continuity, reducing downtime, and preventing cross-contamination between different batches of materials. The anti-static function primarily eliminates static charges generated by friction, which is vital for preventing explosions from flammable and explosive dust, significantly improving operational safety. Simultaneously, it reduces the adhesion or clumping of fine materials to the screen plate due to static electricity, thereby improving screening efficiency and product yield, and protecting high-value materials sensitive to static electricity.

[0003] For example, Chinese patent application CN202323394042.1 discloses a screen with a self-cleaning structure. By adding a self-cleaning mechanism, it can automatically remove impurities and particles, reducing clogging and improving screening efficiency. Another example is Chinese patent application CN202222168959.9, which discloses an anti-static vibrating screen. This screen uses ion bars above the screen assembly, each with a gas pipe connected to an air source. The charged gas generated by the ion bars comes into contact with the material and the screen plate, eliminating static electricity. However, these self-cleaning and anti-static mechanisms in screen equipment, while common existing technologies, have some problems. For instance, the transmission mechanism of the self-cleaning structure requires effective dust prevention, but these structures do not provide a solution. Furthermore, the charged gas generated by the ion bars in the anti-static mechanism cannot fully contact the material, resulting in insufficient anti-static effect. Additionally, the dust prevention in the self-cleaning structure lacks coordination; the self-cleaning and anti-static mechanisms operate independently, leading to complex equipment structure and inconvenient operation if both functions are not simultaneously implemented. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a self-cleaning antistatic screen plate that combines self-cleaning and antistatic functions. The self-cleaning and antistatic mechanisms work together to simultaneously enhance the dustproof and antistatic effects of the self-cleaning mechanism, thereby significantly improving the working efficiency of the equipment.

[0005] To achieve the above objectives, the specific technical solution of the present invention is as follows: A self-cleaning antistatic screen plate includes a screening box, a mounting frame device, a drive mechanism, a cleaning roller device, and an antistatic device. The mounting frame device includes a U-shaped mounting frame, which is fixedly installed on the inner wall of the screening box. The screen plate is detachably mounted on the lower end of the mounting frame. The inner sides of the two side frames of the mounting frame have symmetrically arranged dustproof chambers that communicate with the screening box. Horizontally arranged guide rails are fixedly connected to the two dustproof chambers. A guide hole is opened at the center of the guide rail, and the guide hole communicates with the dustproof chamber through a slot on the inner side. A first flat rack is fixedly connected to the lower end face of the guide rail. The drive mechanism includes a drive screw and a slide. The drive screw is rotatably connected in the guide hole and has a servo motor driven at one end. The slide is slidably connected to the guide rail and driven by the drive screw. The cleaning roller device includes a cleaning roller, which is rotatably connected between the two slides through a rotating shaft. The rotating shaft has drive gear teeth that mesh with the first flat rack. The cleaning roller is provided with a first spiral brush and a second spiral brush. A sealing plate device is fixedly connected to the inside of the dustproof chamber. The static electricity removal device includes an air outlet box, which is fixedly installed on the sealing plate device. A first air outlet hole communicating with the screening box is opened on one side of the air outlet box, and a second air outlet hole communicating with the dustproof chamber is opened on the other side of the air outlet box.

[0006] As a further feature of the above scheme, an annular groove is provided on the rotating shaft, and the first spiral brush and the second spiral brush are spirally distributed with opposite rotation directions. The first spiral brush and the second spiral brush are pressed and abutted against the sieve plate.

[0007] As a further feature of the above solution, the sealing plate device includes a sealing plate with mounting plates at both ends. The sealing plate, mounting plates, and dustproof cavity form a sealed space. The sealing plate has a mounting groove, and a dustproof groove is formed below the mounting groove. A dustproof brush with symmetrical upper and lower contact is fixedly installed in the dustproof groove. The dustproof brush abuts against the annular groove, and the dustproof brush can prevent materials from entering the dustproof cavity and affecting the operation of the drive mechanism.

[0008] As a further feature of the above scheme, the air outlet box is connected to two sides of the supporting air pipes, which are fixedly installed between the mounting plates. One end of the supporting air pipe is connected to the air inlet pipe. The inner walls of the air outlet box, the supporting air pipes and the air inlet pipe are provided with an insulating layer. The air outlet box is fixedly installed in the mounting groove. The air inlet pipe is connected to the ion fan. The positive / negative ions generated by the ion fan are blown into the air outlet box by the air pump through the supporting air pipes and the air inlet pipe.

[0009] The aforementioned ion fans ionize air using the principle of corona discharge to generate positive and negative ions. Among them, the DC type has become the mainstream in the market due to its excellent performance and is an indispensable electrostatic protection device in modern industry. Since ion fans and air pumps are existing mature equipment, their structures will not be described in detail here.

[0010] As a further feature of the above solution, a groove is provided on the outer surface of the slide table, and a second rack is fixedly connected in the groove. The second rack has helical teeth, which are connected to the drive screw. The servo motor drives the drive screw to rotate, and the drive screw drives the slide table to reciprocate on the guide rail through the second rack. At the same time, the first flat rack and the drive screw drive the cleaning roller to rotate, thereby cleaning the screen plate.

[0011] As a further feature of the above solution, an avoidance groove is provided on the inner side of the slide table, which is slidably connected to the air outlet box to avoid interference between the air outlet box and the slide table. A through rotating hole is provided on the inner side of the slide table, and the other end of the rotating hole is connected to the slide groove. The rotating hole is rotatably connected to the rotating shaft. A through vent hole is provided on the slide table and is parallel to the slide groove.

[0012] As a further feature of the above solution, the inner side of the horizontal frame of the mounting frame has symmetrically arranged storage slots, and the side of the screening box away from the storage slots is provided with a discharge port and an impurity discharge port. The discharge port is located below the screen plate, and the impurity discharge port is located outside the screen plate. The outer side of the screening box is provided with a mounting bracket, and the screening box is mounted on the vibration mechanism through the mounting bracket.

[0013] The beneficial effects of this invention are: The drive mechanism is located inside the dustproof chamber. Together with the dustproof brush on the sealing plate, it improves the dustproof effect of the drive mechanism. The servo motor drives the drive screw to rotate. The drive screw drives the slide to move back and forth on the guide rail through the second rack. At the same time, it drives the cleaning roller to rotate through the first flat rack and the drive wheel teeth to clean the screen plate. The cleaning roller is equipped with a first spiral brush and a second spiral brush with opposite directions of rotation to improve the self-cleaning effect.

[0014] When the equipment is working, the positive / negative ions generated by the ion blower are blown into the air box by the air pump through the support air pipe and the air inlet pipe. The airflow carrying positive / negative ions is blown into the screening box from the first air outlet to neutralize the static electricity on the screen plate and the material. At the same time, the rotation of the cleaning roller disturbs the airflow, increasing the contact between the airflow carrying positive / negative ions and the material and screen plate, thus improving the anti-static effect. The other side of the airflow carrying positive / negative ions is blown into the dustproof chamber from the second air outlet, and finally blown towards the cleaning roller from between the dustproof brushes in the lower dustproof groove, further improving the anti-static effect. At the same time, the dustproof chamber is under positive pressure, which further improves the dustproof effect of the drive mechanism. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional schematic diagram of the structure of the present invention; Figure 3 This is a schematic diagram of the sieve plate mechanism of the present invention; Figure 4 This is a cross-sectional schematic diagram of the sieve plate mechanism of the present invention; Figure 5 This is a partial enlarged view of part A of the present invention; Figure 6 This is a cross-sectional schematic diagram of the mounting frame device of the present invention; Figure 7 This is a schematic diagram of the cleaning roller device of the present invention; Figure 8 This is a schematic diagram of the drive mechanism of the present invention; Figure 9 This is a schematic diagram of the drive slide of the present invention; Figure 10 This is an assembly diagram of the sealing plate device and the static elimination device of the present invention; Figure 11 This is a schematic diagram of the sealing plate device of the present invention; Figure 12 This is a schematic diagram of the static elimination device of the present invention.

[0016] 1. Screening box; 101. Discharge port; 102. Impurity discharge port; 103. Mounting bracket; 2. Mounting frame device; 201. Mounting frame; 202. Collection slot; 203. Dustproof chamber; 204. Guide rail; 2041. Guide hole; 2042. Slot; 2043. First flat rack; 605. Pushing cylinder device; 3. Screen plate; 4. Sealing plate device; 401. Sealing plate; 402. Mounting plate; 403. Mounting slot; 404. Dustproof slot; 4041. Dustproof brush; 5. Drive mechanism; 501. Drive screw; 502. Servo motor; 6. Cleaning roller device; 601. Cleaning roller; 602. Rotating shaft; 6021. Drive wheel tooth; 6022. Circular groove; 603. First spiral brush; 604. Second spiral brush; 7. Static elimination device; 701. Support air pipe; 702. Air outlet box; 7021. First air outlet; 7022. Second air outlet; 703. Air inlet pipe; 8. Slide table; 801. Slide groove; 802. Second rack; 8021. Spiral wheel tooth; 803. Clearance groove; 804. Vent hole; 805. Rotation hole. Detailed Implementation

[0017] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The following will refer to the appendix... Figures 1-12 This application will be described in detail with reference to the embodiments.

[0019] This embodiment discloses a self-cleaning antistatic screen plate, including a screening box 1, a mounting frame device 2, a drive mechanism 5, a cleaning roller device 6, and an antistatic device 7. The mounting frame device 2 includes a U-shaped mounting frame 201, which is fixedly installed on the inner wall of the screening box 1. A screen plate 3 is detachably mounted on the lower end of the mounting frame 201. Symmetrically arranged dustproof chambers 203 are opened on the inner sides of the two side frames of the mounting frame 201. The dustproof chambers 203 are connected to the screening box 1. Horizontally arranged guide rails 204 are fixedly connected in the two dustproof chambers 203. A guide hole 2041 is opened at the center of the guide rail 204. 41 communicates with the dustproof cavity 203 through the slot 2042 on the inner side. The lower end face of the guide rail 204 is fixedly connected to the first flat rack 2043. The drive mechanism 5 includes a drive screw 501 and a slide 8. The drive screw 501 is rotatably connected in the guide hole 2041. One end of the drive screw 501 is connected to a servo motor 502. When the drive screw 501 is in the guide hole 2041, a part of the drive screw 501 is exposed in the dustproof cavity 203 through the slot 2042 for subsequent drive connection. The slide 8 is slidably connected to the guide rail 2041 and is also connected to the drive screw 501.

[0020] The cleaning roller device 6 includes a cleaning roller 601, which is rotatably connected between two slides 8 via a rotating shaft 602. The rotating shaft 602 has a drive wheel tooth 6021 that meshes with the first flat rack 2043. The cleaning roller 601 is equipped with a first spiral brush 603 and a second spiral brush 604. A sealing plate device 4 is fixedly connected to the inside of the dustproof chamber 203. The static electricity removal device 7 includes an air outlet box 702, which is fixedly installed on the sealing plate device 4. One side of the air outlet box 702 has a first air outlet 7021 that communicates with the screening box 1, and the other side of the air outlet box 702 has a second air outlet 7022 that communicates with the dustproof chamber 203.

[0021] like Figure 7 As shown, a circular groove 6022 is opened on the rotating shaft 602. The first spiral brush 603 and the second spiral brush 604 are spirally distributed. The first spiral brush 603 and the second spiral brush 604 rotate in opposite directions. The first spiral brush 603 and the second spiral brush 604 press and abut against the screen plate 3. When the cleaning roller 601 rotates, the first spiral brush 603 and the second spiral brush 604 simultaneously sweep impurities to the inside or outside while cleaning the screen plate 3 forward, thereby improving the cleaning effect.

[0022] like Figure 10 , Figure 11As shown, the sealing plate device 4 includes a sealing plate 401, with mounting plates 402 at both ends of the sealing plate 401. The sealing plate 401, mounting plates 402, and dustproof chamber 203 form a sealed space. The sealing plate 401 has a mounting groove 403, and a dustproof groove 404 is formed below the mounting groove 403. Dustproof brushes 4041 are fixedly installed in the dustproof groove 404, with symmetrical upper and lower abutting against each other. The dustproof brushes 4041 abut against the annular groove 6022. The dustproof brushes 4041 can prevent materials from entering the dustproof chamber 203 and affecting the operation of the drive mechanism 5.

[0023] like Figure 12 As shown, the air outlet box 702 is connected to two sides of the support air pipe 701, which is fixedly installed between the mounting plates 402. One end of the support air pipe 701 is connected to the air inlet pipe 703. The inner walls of the air outlet box 702, the support air pipe 701 and the air inlet pipe 703 are provided with an insulating layer. The air outlet box 702 is fixedly installed in the mounting groove 403. The air inlet pipe 703 is connected to the ion fan. The positive / negative ions generated by the ion fan are blown into the air outlet box 702 by the air pump through the support air pipe and the air inlet pipe. The ion fan ionizes the air through the principle of corona discharge to generate positive / negative ions and can blow out positive / negative ion airflow as needed. Among them, the DC type has become the mainstream in the market due to its excellent performance and is an indispensable electrostatic protection device in modern industry. Since the ion fan and air pump are existing mature equipment, their structure will not be described in detail here.

[0024] like Figure 8 , Figure 9 As shown, a groove 801 is opened on the outer side of the slide table 8, and a second rack 802 is fixedly connected in the groove 801. A helical gear 8021 is opened on the second rack 802. The helical gear 8021 is connected to the drive screw 501 through the slot 2042. The servo motor 502 drives the drive screw 501 to rotate. The drive screw 501 drives the slide table 8 to reciprocate on the guide rail 204 through the second rack 802. At the same time, the cleaning roller 601 is driven to rotate through the first flat rack 2043 and the drive gear 6021. The cleaning roller 601 rotates while moving forward, so as to clean the screen plate 3.

[0025] A clearance groove 803 is provided on the inner side of the slide table 8. The clearance groove 803 is slidably connected to the air outlet box 702 to avoid interference between the air outlet box 702 and the slide table 8. A through rotating hole 805 is provided on the inner side of the slide table 8. The other end of the rotating hole 805 is connected to the slide groove 801. The rotating hole 805 is rotatably connected to the rotating shaft 602. A through vent 804 is provided on the slide table 8 and is parallel to the slide groove 801. The vent 804 serves to balance the air pressure. When the slide table 8 moves in the dustproof chamber 203, the gas in the dustproof chamber 203 flows through the vent 804 to balance the air pressure in the dustproof chamber 203 on both sides of the slide table 8.

[0026] like Figure 1 , Figure 2 As shown, the inner side of the horizontal frame of the mounting frame 201 has symmetrically arranged storage slots 202. The side of the screening box 1 away from the storage slots 202 is provided with a discharge port 101 and an impurity discharge port 102. The discharge port 101 is located below the screen plate 3, and the impurity discharge port 102 is located outside the screen plate 3. The outer side of the screening box 1 is provided with a mounting bracket 103. The screening box 1 is mounted on the vibration mechanism through the mounting bracket 103. When the screen plate 3 screens the material, the screened material is discharged from the discharge port 101, and the screened impurities fall into the impurity discharge port 102.

[0027] The working process of this equipment is as follows: When the sieve plate 3 is working, the cleaning roller 601 is located in the receiving groove 202 and will not affect the screening operation. The positive / negative ions generated by the ion blower are blown into the air outlet box 702 by the air pump through the support air pipe 701 and the air inlet pipe 703. The airflow with positive / negative ions is blown into the screening box 1 from the first air outlet 7021 and blown towards the material and sieve plate to neutralize the static electricity on the sieve plate 3 and the material. At the same time, the airflow with positive / negative ions is blown into the dustproof chamber 203 from the second air outlet 7022. Finally, it is blown from between the dustproof brushes 4041 in the lower dustproof groove 404 towards the cleaning roller 601, the material and the sieve plate 3 to assist in anti-static treatment. At the same time, since the dustproof chamber 203 is under positive pressure, it can prevent the material from entering the dustproof chamber 203 from between the dustproof brushes 4041, thereby improving the dustproof effect of the drive mechanism 5.

[0028] When the equipment needs cleaning, the servo motor 502 drives the drive screw 501 to rotate. The drive screw 501 drives the slide table 8 to move on the guide rail 204 via the second rack 802, causing the cleaning roller 601 to move out of the receiving groove 202. At this time, the cleaning roller 601 is driven to rotate via the first flat rack 2043 and the drive wheel tooth 6021. The cleaning roller 601 rotates while moving forward. Since the first spiral brush 603 and the second spiral brush 604 are spirally distributed and rotate in opposite directions, when the cleaning roller 601 rotates, the first spiral brush 603 and the second spiral brush 604 simultaneously sweep impurities inward or outward while cleaning the screen plate 3 forward, improving the cleaning effect. While cleaning is being performed, the static eliminator 7 works simultaneously. One side of the airflow carrying positive / negative ions is blown into the screening box 1 from the first air outlet 7021, and the other side of the airflow carrying positive / negative ions is blown into the dustproof chamber 203 from the second air outlet 7022. Finally, the airflow is blown from between the dustproof brushes 4041 in the lower dustproof groove 404 towards the cleaning roller 601. The rotation of the cleaning roller disturbs the airflow, increasing the contact between the airflow carrying positive / negative ions and the material and the screen plate, further improving the antistatic effect.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A self-cleaning antistatic screen plate, comprising a screening box, a mounting frame device, a drive mechanism, a cleaning roller device, and an antistatic device, characterized in that, The mounting frame device includes a U-shaped mounting frame, which is fixedly installed on the inner wall of the screening box. A screen plate is detachably installed at the lower end of the mounting frame. The inner sides of the two side frames of the mounting frame have symmetrically arranged dustproof chambers that are connected to the screening box. Horizontally arranged guide rails are fixedly connected in the two dustproof chambers. A guide hole is opened at the center of the guide rail, and the guide hole is connected to the dustproof chamber through a slot on the inner side. A first flat rack is fixedly connected to the lower end face of the guide rail. The driving mechanism includes a drive screw and a slide. The drive screw is rotatably connected in the guide hole and a servo motor is driven at one end. The slide is slidably connected to the guide rail and is driven by the drive screw. The cleaning roller device includes a cleaning roller, which is rotatably connected between the two slides through a rotating shaft. The rotating shaft has drive gear teeth that mesh with the first flat rack. The cleaning roller is provided with a first spiral brush and a second spiral brush. A sealing plate device is fixedly connected to the inside of the dustproof chamber. The static electricity removal device includes an air outlet box, which is fixedly installed on the sealing plate device. A first air outlet hole communicating with the screening box is opened on one side of the air outlet box, and a second air outlet hole communicating with the dustproof chamber is opened on the other side of the air outlet box.

2. The self-cleaning antistatic screen plate according to claim 1, characterized in that, The rotating shaft has an annular groove, and the first spiral brush and the second spiral brush are spirally distributed. The first spiral brush and the second spiral brush rotate in opposite directions, and the first spiral brush and the second spiral brush press against the screen plate.

3. The self-cleaning antistatic screen plate according to claim 2, characterized in that, The sealing plate device includes a sealing plate with mounting plates at both ends. The sealing plate, mounting plates, and dustproof cavity form a sealed space. The sealing plate has a mounting groove, and a dustproof groove is formed below the mounting groove. A dustproof brush is fixedly installed in the dustproof groove, with the dustproof brush abutting against the annular groove.

4. The self-cleaning antistatic screen plate according to claim 3, characterized in that, The air outlet box is connected to two supporting air pipes on both sides. The supporting air pipes are fixedly installed between the mounting plates. One end of the supporting air pipe is connected to an air inlet pipe. The inner walls of the air outlet box, supporting air pipes and air inlet pipe are provided with an insulating layer. The air outlet box is fixedly installed in the mounting groove.

5. The self-cleaning antistatic screen plate according to claim 2, characterized in that, A groove is formed on the outer surface of the slide table, and a second rack is fixedly connected in the groove. The second rack has helical gear teeth, which are connected to the drive screw.

6. The self-cleaning antistatic screen plate according to claim 5, characterized in that, An avoidance groove is provided on the inner side of the slide table, and the avoidance groove is slidably connected to the air outlet box to avoid interference between the air outlet box and the slide table. A through rotating hole is provided on the inner side of the slide table, and the other end of the rotating hole is connected to the slide groove.

7. The self-cleaning antistatic screen plate according to claim 1, characterized in that, The mounting frame has symmetrically arranged storage slots on the inner side of the horizontal frame. The screening box has a discharge port and an impurity discharge port on the side away from the storage slots. The discharge port is located below the screen plate, and the impurity discharge port is located outside the screen plate. The screening box has a mounting bracket on the outside.

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