Pre-charged diversion type seed cotton residual film static electricity removing device

Abstract

The invention belongs to the field of agricultural machinery, and relates to a pre-charge flow guide type seed cotton residual film static electricity removing device which comprises a support, a cotton feeding box, a cotton collecting box, a pre-charge flow guide part, a main charge removing part, an electrode adjusting mechanism and an electrode clamping mechanism. The main charge clearing part comprises main wallboards on two sides, a main charge corona electrode, a grounding roller and an air knife mounted on the back side of the grounding roller; the pre-charged flow guide part mainly comprises a metal cotton flowing plate, pre-charged wall plates on the two sides and a pre-charged corona electrode; residual films pass through an electric field area formed by the pre-charged corona electrode and the metal cotton dripping plate, the initial charge capacity of the residual films is improved, the metal cotton dripping plate is moved, the contact position and collision behavior of seed cotton materials and the rotating roller are changed, and the residual films are separated under the electrostatic adsorption effect of the main charge removing part; the charging effect is enhanced in a pre-charging mode, adjustment of motion parameters of seed cotton materials is achieved through the flow guide effect, and the electrostatic removal efficiency of seed cotton residual films is improved.

Description

Technical Field

[0001] The invention belongs to the field of agricultural machinery, and mainly relates to a pre-charged conductive type seed cotton residual film electrostatic removal device, which belongs to a foreign fiber cleaning device in the seed cotton processing process. Background Art

[0002] The content of foreign fibers is a key factor affecting the purchase price of cotton and the quality of cotton textiles. The needle roller type seed cotton residual film electrostatic removal device designed using electrostatic adsorption technology is used in seed cotton processing and production due to its advantages such as reliable device, simple structure, low cost and high production efficiency. Its principle is that seed cotton and residual film and other foreign fibers have different charging characteristics. After entering the electric field, the residual film is adsorbed on the roller under the action of the electric field force, and the seed cotton enters the next process because the gravity it is subjected to is much greater than the electric field force. The currently designed seed cotton residual film electrostatic removal device does not have a pre-charge diversion part. The seed cotton directly enters the main charging removal part after passing the previous process. The process of charging and separation is achieved through the corona electrode and the roller. There are problems such as insufficient single charging and insufficient contact between the cotton film and the roller, which leads to low removal efficiency of the residual film removal device.

[0003] Chinese patent CN114393746A invented an electrostatic separation device for machine-harvested seed cotton residual film. This device uses a needle roller structure to achieve electrostatic separation of seed cotton and residual film. The device can adjust parameters such as the position of the corona electrode and the electrostatic voltage of the main charge removal unit to obtain a parameter combination with the best separation effect. Chinese patent CN113638080A invented an electrostatic seed cotton foreign fiber removal modular device. This device uses a two-stage corona electrode plus a single-stage static electrode structure to increase the charge of the residual film after entering the electrostatic field, thereby improving the separation efficiency of seed cotton and foreign fibers. However, the existing residual film electrostatic removal devices mentioned above all have the problem of insufficient residual film charge and low separation efficiency. Summary of the Invention

[0004] The present invention aims to address the problems of insufficient residual film charge and low separation efficiency in existing needle-roller-type electrostatic removal devices for seed cotton residual film. This device provides a pre-charged, diverting electrostatic removal device for seed cotton residual film, significantly improving the removal efficiency of seed cotton residual film. By adding a pre-charged diverter, the present invention increases the initial charge of the residual film. Furthermore, the present invention can adjust the contact position and collision behavior between the seed cotton material and the roller based on two factors: seed cotton feed rate and separation efficiency, achieving efficient removal of residual film from machine-harvested seed cotton.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A precharged conduction type seed cotton residual film electrostatic removal device comprises a bracket, a cotton feeding box, and a cotton collecting box, and is characterized in that it also includes a precharged conduction part, a main charge removal part, an electrode adjustment mechanism, and an electrode clamping mechanism; the main charge removal part comprises main wall panels on both sides, a main charge corona electrode, a grounded roller, and an air knife installed on the back side of the grounded roller; the precharged conduction part mainly comprises a metal cotton flowing plate, precharged wall panels on both sides, and a precharged corona electrode; the precharged wall panels are installed above the main wall panels, and the metal cotton flowing plate is tilted below the cotton feeding box and is detachably connected to the precharged wall panels; the main charge corona electrode is arranged between the main wall panels on both sides through the electrode adjustment mechanism and the electrode clamping mechanism, and the precharged corona electrode is installed between the precharged wall panels on both sides through the electrode adjustment mechanism and the electrode clamping mechanism.

[0007] Preferably, the structure of the electrode adjustment mechanism mainly includes a length adjustment nut and a lead screw, the electrode clamping mechanism includes a rectangular supporting plate, an electrode tube clamp, and a tube clamp fixing bolt, and the lead screw passes through the through hole on the rectangular supporting plate and is welded to the electrode tube clamp; in the precharged current guide portion, the distance between the precharged corona electrode and the metal cotton dripping plate is adjusted by the length adjustment nut; the precharged corona electrode needle tip is facing the metal cotton dripping plate surface, and the needle spacing can be selected according to actual processing conditions to ensure that the electrostatic field is stable, and the main charged corona electrode and the precharged corona electrode are both connected to a high-voltage electrostatic generator, which is grounded.

[0008] Preferably, the pre-charged wall panel is provided with a horizontal long strip chute, the inclination angle of the metal cotton dripping plate remains unchanged, and the metal cotton dripping plate can be moved forward and backward within a certain range along the long strip chute. The metal cotton dripping plate that moves forward and backward allows the seed cotton material to slide onto the top of the grounded roller, and the angle between its sliding direction and the horizontal plane direction of the center axis of the grounded roller is in the range of 0-90°. The seed cotton material passing through the metal cotton dripping plate obtains a certain amount of kinetic energy. While increasing the processing capacity, the seed cotton material collides with the surface of the grounded roller, weakening the bonding force between the seed cotton and the residual film, making the residual film more easily adsorbed onto the grounded roller.

[0009] Preferably, the main wall panel in the main charge removal part is installed on the bracket, the main charge corona electrode is installed on one side of the grounded roller, and one end is connected to the high-voltage electrostatic generator; the wind knife and the film collection box are installed on the opposite side of the grounded roller, and the upper end of the wind knife is connected to the external blower through the air duct to blow the residual film adsorbed on the surface of the grounded roller into the film collection box; the two ends of the grounded roller are fixed to the main wall panel through the rotating shaft and the bearing seat, and the motor drives the grounded roller to rotate around its own axis, and the motor is connected to the frequency converter for adjusting the rotation speed of the grounded roller.

[0010] Preferably, the falling speed of the material is less than the charging speed of the residual film in the electric field, so as to ensure that the initial charge of the residual film is sufficient.

[0011] Preferably, the pre-charged wall panels and the main wall panels are made of anti-static materials; the grounding roller and the metal wool dripping plate are provided with grounding terminals.

[0012] Preferably, the scope of the absolute value of the precharged corona electrode voltage is 15-60kV.

[0013] Preferably, the motor and the ground roller shaft can be driven by a pulley, gear, or sprocket, depending on actual needs. The lower end opening of the air knife is tangential to the surface of the ground roller. The film collection box is located below the ground roller, and its side walls are connected to the main wall panel via bolts and nuts to receive residual film blown off by the air knife.

[0014] Compared with the existing technology, the advantages of the present invention are:

[0015] The present invention provides a pre-charged flow diversion module below the cotton feed port. The electrostatic field formed between the corona electrode and the metal flow plate increases the initial charge of the residual film. The position of the metal flow plate is adjusted according to the amount of seed cotton fed and the effect of removing the residual film, thereby changing the contact position and collision behavior between the seed cotton material and the roller. After passing through the flow diversion effect of the metal flow plate, the material acquires a certain amount of kinetic energy. The seed cotton material impacts the surface of the grounded roller, weakening the cohesive force between the seed cotton and the residual film, making it easier for the residual film to adhere to the grounded roller. The present invention provides a pre-charged diversion type seed cotton residual film electrostatic removal device, the innovation of which lies in the addition of a pre-charged diversion part, which can increase the initial charge of the residual film and regulate the movement trajectory of the seed cotton material when it falls. The seed cotton material obtains a certain kinetic energy through the diversion effect of the metal cotton flow plate, and the material hits the surface of the grounded roller, which weakens the bonding force between the seed cotton and the residual film, improves the residual film removal efficiency, and effectively solves the problems of insufficient charge of the residual film and low separation efficiency in the existing needle roller type seed cotton residual film electrostatic removal device. The device has a simple structure and is efficient and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the pre-charged conductive type seed cotton residual film electrostatic removal device provided in an embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram of the main structure of the pre-charged conductive seed cotton residual film electrostatic removal device provided in an embodiment of the present invention.

[0018] Figure 3 It is a side view of the pre-charged guide portion of the pre-charged guide type seed cotton residual film electrostatic removal device provided in an embodiment of the present invention.

[0019] Figure 4 This is a structural schematic diagram of the electrode adjustment mechanism and electrode clamping mechanism of the pre-charged conductive seed cotton residual film electrostatic removal device provided in an embodiment of the present invention.

[0020] The reference numerals in the accompanying drawings are described as follows:

[0021] 1-fan; 2-fan bracket; 3-flange; 4-positive pressure pipe; 5-cotton feeding box; 6-metal cotton flowing plate; 7-pre-charged corona electrode; 8-pre-charged wall panel; 8-1 long slide, 9-main wall panel; 10-large pulley; 11-small pulley; 12-belt; 13-wind knife; 14-film collecting box; 15-main charged corona electrode; 16-motor A; 17-high voltage electrostatic generator; 18-frequency converter; 19-bracket; 20-motor B; 21-bearing seat; 22-grounding roller; 23-tube clamp fixing bolt; 24-screw; 25-length adjustment nut; 26-electrode tube clamp; 27-rectangular support plate; 28-hinge; 29-horizontal plate. DETAILED DESCRIPTION

[0022] The present invention is described in detail below with reference to specific embodiments, but this is not intended to limit the present invention.

[0023] Embodiment 1:

[0024] A precharged conduction type seed cotton residual film electrostatic removal device, comprising a bracket 19, a cotton feeding box 5, a cotton collecting box 14, a precharged conduction part, a main charge removal part, an electrode adjustment mechanism, and an electrode clamping mechanism; the main charge removal part comprises main wall panels 9 on both sides, a main charge corona electrode 15, a grounded roller 22, and a wind knife 13 installed on the back side of the grounded roller 22; the precharged conduction part mainly comprises a metal cotton flowing plate 6, precharged wall panels 8 on both sides, and a precharged corona electrode 7; the precharged wall panels 8 are installed above the main wall panels 9, and the metal cotton flowing plate 6 is tilted below the cotton feeding box 5 and is detachably connected to the precharged wall panels 8; the main charge corona electrode 15 is arranged between the main wall panels 9 on both sides through the electrode adjustment mechanism and the electrode clamping mechanism, and the precharged corona electrode 7 is installed between the precharged wall panels 8 on both sides through the electrode adjustment mechanism and the electrode clamping mechanism.

[0025] The structure of the electrode regulating mechanism mainly comprises a length adjusting nut 25 and a lead screw 24, and the electrode clamping mechanism comprises a rectangular supporting plate 27, an electrode tube clamp 26, and a tube clamp fixing bolt 23, and the lead screw 24 passes through the through hole on the rectangular supporting plate 27 and is welded to the electrode tube clamp 26; in the precharged current guiding portion, the distance between the precharged corona electrode 7 and the metal cotton dripping plate 6 is regulated by the length adjusting nut 25; the needle tips of the precharged corona electrode 7 are just against the surface of the metal cotton dripping plate 6, and the needle spacing can be selected according to the actual processing situation to ensure that the electrostatic field is stable, and the main charged corona electrode 15 and the precharged corona electrode 7 are all connected to the high-voltage electrostatic generator 17, which is grounded.

[0026] The pre-charged wall panel 8 is provided with a horizontal long strip chute 8-1, and the inclination angle of the metal cotton dripping plate 6 remains unchanged. The metal cotton dripping plate 6 can be moved forward and backward within a certain range along the long strip chute 8-1. The metal cotton dripping plate 6 that moves forward and backward makes the seed cotton material slide to the top of the grounding roller 22. The angle between its sliding direction and the horizontal plane direction of the center axis of the grounding roller 22 is in the range of 0-90°. The seed cotton material passing through the metal cotton dripping plate 6 obtains a certain amount of kinetic energy. While increasing the processing capacity, the seed cotton material hits the surface of the grounding roller 22, weakening the bonding force between the seed cotton and the residual film, making the residual film more easily adsorbed onto the grounding roller 22.

[0027] The main wall panel 9 in the main charge removal part is installed on the bracket 19, and the main charge corona electrode 15 is installed on one side of the grounded roller 22, and one end is connected to the high-voltage electrostatic generator 17; the wind knife 13 and the film collection box 14 are installed on the opposite side of the grounded roller 22, and the upper end of the wind knife 13 is connected to the external blower through the air duct to blow the residual film adsorbed on the surface of the grounded roller 22 into the film collection box 14; the two ends of the grounded roller 22 are fixed to the main wall panel 9 through the rotating shaft and the bearing seat, and the motor A16 drives the grounded roller 22 to rotate around its own axis. The motor A16 is connected to the frequency converter 18 for adjusting the rotation speed of the grounded roller 22.

[0028] The falling speed of the seed cotton material is less than the charging speed of the residual film in the electric field, ensuring that the initial charge of the residual film is sufficient; the pre-charged wallboard 8 and the main wallboard 9 are made of anti-static materials; the grounded roller 22 and the metal cotton flowing plate 6 are provided with grounding terminals; the absolute value of the voltage of the pre-charged corona electrode 7 is in the range of 15-60kV.

[0029] The transmission mode between the motor A16 and the grounding roller 22 can be a pulley drive, a gear drive or a sprocket drive according to actual needs.

[0030] The fan 1 of the present invention is installed on the fan bracket 2, and the hinge 28 fixes the horizontal plate 29 on the cotton feeding box 5. 6. In precharged current guiding portion, two elongated chutes 8-1 are offered on the precharged wallboard 8, four threaded holes are offered at metal dripping plate 6 sidewalls, by bolt group, metal dripping plate is fixed on the precharged wallboard 8, the front and rear positions of metal dripping plate 6 can move within a certain range, between precharged corona electrode 7 and the precharged wallboard 8, be connected with electrode clamping mechanism by electrode regulating mechanism, wherein the electrode regulating mechanism comprises lead screw 24 and length adjustment nut 25, wherein the electrode clamping mechanism comprises pipe clamp fixing bolt 23, electrode tube clamp 26, rectangular supporting plate 27, lead screw 24 passes through through hole and electrode tube clamp 26 welding above the rectangular supporting plate 27, length adjustment nut 25 is controlled the distance between precharged corona electrode 7 and the metal dripping plate 6, precharged corona electrode 7 needle tips are just against metal dripping plate 6 surfaces, precharged corona electrode 7 one ends connect high-voltage electrostatic generator 17, wherein metal dripping plate 6 is provided with ground terminal, and the precharged wallboard adopts antistatic material to make. In the main charge removal section, the air knife 13, film collection box 14, and main charge corona electrode 15 are all mounted on the main wallboard 9. The rotating shaft of the ground roller 22 is mounted on the main wallboard 9 via bearing blocks 21 at both ends. A motor A16 is connected to the rotating shaft of the ground roller 22 via a small pulley 11, a belt 12, and a large pulley 10, driving the ground roller 22 to rotate. Motor A16 is connected to a frequency converter 18, allowing the speed of the ground roller 22 to be adjusted between 0 and 500 rpm. The lower end opening of the air knife 13 is tangential to the surface of the ground roller 22. The film collection box 14 is located below the ground roller 22, and its sidewalls are connected to the main wallboard 9 via bolts and nuts to receive the residual film blown off by the air knife.

[0031] In this embodiment, the residual film increases its initial charge when passing through the electric field formed by the precharged corona electrode 7 and the metal cotton dripping plate 6. The seed cotton material gains a certain momentum through the diversion effect of the metal cotton dripping plate 6. Moving the metal cotton dripping plate 6 changes the contact position and collision behavior between the seed cotton material and the grounded roller 22, and the residual film is separated by the electrostatic adsorption of the main charge removal unit. The precharge method enhances the charging effect, and the diversion effect makes the movement parameters of the seed cotton material adjustable, thereby improving the electrostatic removal efficiency of the seed cotton residual film.

[0032] Seed cotton material is placed at the horizontal plate place of cotton feeding box 5, the high-voltage electrostatic generator 17 that is connected precharged corona electrode 7 is opened again, precharged corona electrode 7 absolute values ​​of voltage are adjusted to 25kV, seed cotton material is evenly pushed into cotton feeding box 5, seed cotton material is made to slide freely on metal cotton dripping plate 6 surfaces. Main charged corona electrode 15 absolute values ​​of voltage are adjusted to 25kV, and grounded roller 22 linear speeds are adjusted to 3m / s, ensure that seed cotton material drops to within the scope of top 40-50 ° of grounded roller 22 central axis horizontal planes, the residual film quality finally collected in film collecting box 14 is averaged, calculate residual film clearance rate.

[0033] The results show that: after the pre-charging effect in Example 2, the machine-picked seed cotton material is charged by the electrostatic field formed between the corona electrode and the metal cotton flow plate, thereby increasing the initial charge of the residual film. Compared with the seed cotton residual film electrostatic removal device without applying pre-charging and with other conditions completely the same, the residual film removal rate is increased by 5.7% after adding pre-charging.

[0034] Example 2:

[0035] Compared with Example 1, the difference is that the seed cotton material is placed at the horizontal plate of the cotton feeding box 5, the seed cotton material is evenly pushed into the cotton feeding box 5, and the seed cotton material is allowed to slide freely on the surface of the metal cotton dripping plate 6. The absolute value of the voltage of the main charged corona electrode 15 is adjusted to 25kV, and the linear speed of the grounded roller is adjusted to 3m / s. The position of the metal cotton dripping plate 6 is moved through the elongated holes provided by the pre-charged wallboard to ensure that the seed cotton material falls within the range of 20-30° above the horizontal plane of the central axis of the grounded roller 22. The residual film mass finally collected in the film collecting box 14 is averaged to calculate the residual film removal rate.

[0036] The results show that the guiding effect of the cotton dripping plate changes the contact position and collision behavior between the seed cotton material and the roller. Compared with the seed cotton residual film electrostatic removal device that drops the seed cotton material to the upper 40-50° range of the horizontal plane of the center axis of the grounded roller 22 and other conditions are completely the same, the position of the metal cotton dripping plate is moved to make the seed cotton material fall to the upper 20-30° range of the horizontal plane of the center axis of the grounded roller 22, and the removal rate is improved by 5.9%.

[0037] Example 3:

[0038] Compared with embodiment 1, different place is: seed cotton material is placed in the horizontal plate place of cotton feeding box 5, then blower fan 1 power supply is turned on, the positive pressure airflow that blower fan 1 produces is by positive pressure pipeline 4 to cotton feeding box 5, the high-voltage electrostatic generator 17 that is connected precharged corona electrode 7 is opened, precharged corona electrode 7 absolute voltage values ​​are adjusted to 25kV, by the elongated hole offered by precharged wallboard, the position of mobile metal cotton dripping plate 6, ensure that seed cotton material falls within the scope of 20-30 ° of upper 20-30 ° of grounded roller 22 central axis horizontal planes, seed cotton material is evenly pushed into cotton feeding box 5.Main charged corona electrode 15 absolute voltage values ​​are adjusted to 25kV, and grounded roller linear speed is adjusted to 3m / s.The residual film quality finally collected in film collecting box 14 is averaged, calculate residual film clearance rate.

[0039] The results show that compared with the traditional electrostatic removal device for seed cotton residual film, in Example 4, the positive pressure cotton feeding part and the pre-charged diversion part are added, and the removal rate of seed cotton residual film is greatly improved, with the removal rate increased by 9.5%.

[0040] Example 4:

[0041] Compared with the embodiment 3, the difference of this embodiment is that the position of the metal cotton dripping plate 6 is moved to ensure that the seed cotton material falls to the position 0° above the horizontal plane of the central axis of the grounding roller 22.

[0042] Example 5:

[0043] Compared with the third and fourth embodiments, the present embodiment is different in that the metal cotton dripping plate 6 is moved to ensure that the seed cotton material falls to a position 90 degrees above the horizontal plane of the central axis of the grounding roller 22 .

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A pre-charged conductive type seed cotton residual film electrostatic removal device, comprising a bracket, a cotton feeding box, and a cotton collecting box, characterized in that It also includes a precharged current guide part, a main charge removal part, an electrode adjustment mechanism, and an electrode clamping mechanism; the main charge removal part includes main wall panels on both sides, a main charge corona electrode, a grounded roller, and a wind knife installed on the back side of the grounded roller; the precharged current guide part mainly includes a metal cotton dripping plate, precharged wall panels on both sides, and a precharged corona electrode; the precharged wall panels are installed above the main wall panels, and the metal cotton dripping plate is tilted below the cotton feeding box and is detachably connected to the precharged wall panels; the main charge corona electrode is arranged between the main wall panels on both sides through the electrode adjustment mechanism and the electrode clamping mechanism, and the precharged corona electrode is installed between the precharged wall panels on both sides through the electrode adjustment mechanism and the electrode clamping mechanism.

2. A pre-charged conductive type seed cotton residual film electrostatic removal device according to claim 1, characterized in that: The structure of the electrode adjustment mechanism includes a length adjustment nut and a lead screw, the electrode clamping mechanism includes a rectangular support plate, an electrode tube clamp, and a tube clamp fixing bolt, and the lead screw passes through a through hole on the rectangular support plate and is welded to the electrode tube clamp; in the precharged current guide portion, the distance between the precharged corona electrode and the metal cotton dripping plate is adjusted by the length adjustment nut; the needle tip of the precharged corona electrode faces the surface of the metal cotton dripping plate, and the needle spacing is selected according to actual processing conditions to ensure the stability of the electrostatic field, and the main charged corona electrode and the precharged corona electrode are both connected to a high-voltage electrostatic generator, and the high-voltage electrostatic generator is grounded.

3. A pre-charged conductive type seed cotton residual film electrostatic removal device according to claim 1 or 2, characterized in that: The pre-charged wall panel is provided with a horizontal long strip slide, and the inclination angle of the metal cotton dripping plate remains unchanged. The metal cotton dripping plate can be moved forward and backward within a certain range along the long strip slide. The metal cotton dripping plate that moves forward and backward makes the seed cotton material slide to the top of the grounded roller, and the angle range between the sliding direction and the horizontal plane direction where the center axis of the grounded roller is located is 0-90°. The seed cotton material passing through the metal cotton dripping plate obtains a certain kinetic energy. While increasing the processing capacity, the seed cotton material hits the surface of the grounded roller, weakening the bonding force between the seed cotton and the residual film, so that the residual film is easily adsorbed onto the grounded roller.

4. A pre-charged conductive type seed cotton residual film electrostatic removal device according to claim 3, characterized in that: The main wall panel is installed on the bracket, the main charged corona electrode is installed on one side of the grounded roller, the wind knife and the film collecting box are installed on the opposite side of the grounded roller, and the upper end of the wind knife is connected to an external blower through an air duct to blow the residual film adsorbed on the surface of the grounded roller into the film collecting box; both ends of the grounded roller are fixed on the main wall panel, and the motor drives the grounded roller to rotate around its own axis. The motor is connected to the frequency converter to adjust the rotation speed of the grounded roller.

5. The pre-charged conductive type seed cotton residual film electrostatic removal device according to claim 4, characterized in that The falling speed of the seed cotton material is lower than the charging speed of the residual film in the electric field, which ensures that the initial charge of the residual film is sufficient.

6. A pre-charged conductive type seed cotton residual film electrostatic removal device according to claim 5, characterized in that: The pre-charged wall panels and the main wall panels are made of anti-static materials; the grounding roller and the metal cotton dripping plate are provided with grounding terminals.

7. A pre-charged conductive type seed cotton residual film electrostatic removal device according to claim 6, characterized in that: The range of the absolute value of the pre-charged corona electrode voltage is 15-60 kV.

8. The pre-charged conductive type seed cotton residual film electrostatic removal device according to claim 7, characterized in that The transmission mode between the motor and the grounding roller is belt pulley transmission, gear transmission or sprocket transmission according to actual needs.

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