Intelligent screening machine and control method thereof

Abstract

The invention relates to the technical field of screening machines, in particular to an intelligent screening machine and a control method thereof.The intelligent screening machine comprises a shell, a screening roller is rotationally arranged in the shell and is in an inclined state, the intelligent screening machine further comprises an elastic belt, the elastic belt is arranged on the outer side of the screening roller in a sleeving mode, and a gap is formed between the elastic belt and the screening roller; the transmission wheel is fixed on the screening roller, and the transmission wheel is in transmission connection with the elastic belt; the pushing assembly is arranged in the shell, and the pushing assembly is used for intermittently pushing the elastic belt located above the screening roller and adjusting the relative motion state between the elastic belt and the materials; relative displacement is generated between materials through deformation of the elastic belts, the materials can be driven to move to recover the state of being vertically inserted into the sieve holes through the friction effect of the elastic belts, and therefore the materials can be separated from the sieve holes conveniently.

Description

Technical Field

[0001] The present invention relates to the field of screening machines, and in particular to an intelligent screening machine and a control method thereof. Background Art

[0002] The screening machine is a vibrating screening machine that utilizes the relative movement between bulk materials and the screen surface to allow some particles to pass through the screen holes and classify the materials into different grades according to particle size.

[0003] Some patent documents related to screening machines are disclosed in the prior art. The utility model patent with publication number CN220991676U discloses a biomass particle screening device, including an inclined bracket, a tilted semicircular arc-shaped receiving tray is fixedly installed on the top of the inclined bracket, a drum screen that can screen out multiple particle sizes is rotatably installed inside the receiving tray, a driving mechanism for driving the drum screen to rotate is installed on one side of the top of the receiving tray, a guide frame for receiving particles of different particle sizes is installed at the front end of the inclined bracket, the drum screen includes an outer screen barrel rotatably installed inside the receiving tray, an inner screen barrel is fixedly installed inside the outer screen barrel through a connecting rod, and both ends of the inner screen barrel extend to the outside of the outer screen barrel.

[0004] In the screening process in the prior art, the sieve holes are often the same as the cross-section of the screened material. When the cross-sections of the retained material and the screened material are the same, such as cylindrical particles of different lengths, the retained material may also pass through the sieve holes during screening. It can be seen that when the cross-sections of the materials are the same, screening is more difficult. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an intelligent screening machine and a control method thereof.

[0006] To achieve the above objectives, in a first aspect, the present invention provides an intelligent screening machine, comprising a housing, a screening drum rotatably arranged inside the housing, the screening drum being in an inclined state, and further comprising: An elastic belt, wherein the elastic belt is sleeved on the outer side of the screening drum, and a gap is provided between the elastic belt and the screening drum; A transmission wheel, the transmission wheel is fixed on the screening drum, and the transmission wheel is connected to the elastic belt in a transmission manner; A pushing component, which is arranged inside the shell and is used to intermittently push the elastic belt located above the screening drum to adjust the relative motion state between the elastic belt and the material; Specifically, in the screening process in the prior art, the screen hole is often the same as the cross-section of the screened material. When the cross-sections of the retained material and the screened material are the same, such as cylindrical particles of different lengths, the retained material may also pass through the screen hole during screening. Therefore, when the cross-sections of the materials are the same, screening is more difficult. It should be noted that the screening drum includes two mounting plates, a screen is fixed on the two mounting plates, a first gear is fixed on the surface of the two mounting plates, a second gear is meshed on one side of the first gear, the second gear is coaxially fixed with the first motor, and the first motor is fixed on the inner wall of the housing; A pipe is provided in the middle of the screening drum, one end of the pipe passes through the screening drum and is provided with a feed port, and the pipe is located on the inner side of the screening drum and is provided with a through groove; A material discharge trough is provided on one of the mounting plates, and a first electric cylinder and a blocking plate are arranged in the material discharge trough; It should be further explained that the surface of the elastic band is provided with a plurality of feeding openings; When working, add materials into the screening drum through the feed port, then start the first motor to drive the first gear to rotate, the first gear drives the second gear to rotate, and the second gear drives the mounting plate and the screen to rotate as a whole for screening; The shorter material passes through the screen holes, enters the gap, and slides out from the discharge port, completing the discharge of the screened material; After the longer material enters the screen hole, it is blocked by the elastic band because of its length and will not completely enter the gap, thus completing the screening function when the material cross-section is the same; Furthermore, although the elastic band can reduce the wear of the end of the material inserted into the sieve hole, the friction between the elastic band and the material is relatively large. If the elastic band does not move and the material is relatively fragile, the material may be broken under the friction. The elastic belt is driven by the transmission wheel, so that the elastic belt and the material move synchronously. When the longer material enters the screen hole, the relative displacement between the material and the elastic belt is reduced to avoid continuous relative displacement between the material and the elastic belt, which may cause the material to break. The vertically inserted materials will gradually move to the top of the screening drum as the screening drum rotates, and finally fall under the action of gravity, thus preventing the longer materials from staying in the screen holes for a long time and affecting the screening efficiency. It should be further explained that, under the impact and extrusion of the material inside the screening drum, some longer materials may be tilted and stuck inside the screen hole, and it is difficult to fall automatically under the action of gravity. Therefore, the present invention is provided with a pushing component, which actively pushes the elastic belt intermittently. When the elastic belt is pushed upward, the elastic belt stretches, and a relative displacement is generated between the elastic belt and the material through the deformation. Taking the left side of the screening drum as an example, when the material S is stuck and in a downward tilted state, the friction of the elastic belt can drive the material to move upward to restore the state of vertical insertion into the screen hole, thereby facilitating the separation of the material from the screen hole. When material X is stuck and in an upward tilted state, when the elastic belt is reset, the relative displacement direction between the elastic belt and the material can be changed, so that through the friction of the elastic belt, the material can be driven to move downward and resume the state of vertical insertion into the sieve hole, thereby facilitating the separation of the material from the sieve hole.

[0007] Preferably, the pushing assembly comprises: A push column, the push column is inserted into the inner side of the elastic band, and both sides of the push column are rotatably connected with mounting seats; A push-pull member, wherein the push-pull member is fixed between the mounting seat and the housing; Specifically, the push-pull member can be an electric cylinder, the fixed rod of the electric cylinder is fixed to the housing, and the movable rod of the electric cylinder is fixed to the mounting seat. By starting the electric cylinder to extend or contract, the height of the push column can be adjusted, thereby pushing the elastic band to deform. The push column is rotatably connected to the mounting seat, thereby reducing the obstruction to the movement of the elastic band; Furthermore, when not pushing, the pushing column is on the inner side of the elastic band, so that the top of the elastic band is always in a raised state, which is also convenient for vertically inserting the material inside the sieve hole. When moving to this position, it can be separated from the elastic band to avoid friction affecting the falling of the material.

[0008] Preferably, the mounting seat comprises: A base, the base being connected to the push-pull member; A slide plate, wherein the slide plate is slidably connected to the base; A pressure sensor, wherein the pressure sensor is fixed on the base; a first spring, wherein the first spring is arranged between the slide plate and the pressure sensor; A limiting column, wherein the limiting column is fixed to the bottom of the slide plate; Specifically, prolonged intermittent pushing of the elastic band may cause elastic fatigue, reduce the elastic band's resilience, or cause the elastic band to become permanently elongated; The present invention sets a pressure sensor to detect the pressure value when the elastic belt rebounds, and performs detection after the push-pull member completes the standard travel distance. When it is detected that the pressure value does not reach the set value, the electric cylinder is controlled to contract until the pressure value reaches the set value, and the electric cylinder stops contracting, thereby adjusting the tension of the elastic belt so that the bottom of the elastic belt can always fit the transmission wheel, avoiding the occurrence of gaps at the bottom, which may cause shorter materials to be stuck.

[0009] In a second aspect, the present invention provides a control method for an intelligent screening machine, further comprising a controller, the control method comprising the following steps: S1, the controller controls the push-pull member to push the standard travel distance to reset; S2, the controller obtains a first pressure value generated by the pressure sensor detecting the pressure information of the first spring for the first time, the controller compares the first pressure value with a preset value, and generates first control information when the first pressure value does not reach the preset value, the first control information is used to control the push-pull member to retract a preset distance, and the controller sends the first control information to the push-pull member; S3, the controller acquires a second pressure value generated by the pressure sensor detecting the pressure information of the first spring for the second time, and the controller compares the second pressure value with a preset value; S4. When the second pressure value reaches the set value, the controller generates adjustment information and adjusts the standard stroke distance of the electric cylinder according to the adjustment information; S5. When the second pressure value does not reach the preset value, third control information is generated, and the third control information is used to control the push-pull member to retract the preset distance again, and the controller sends the third control information to the push-pull member; S6. Repeat the above step S3 again.

[0010] Preferably, the adjusted standard travel distance value is calculated by the following formula: , where X is the adjusted standard travel distance value, is the original standard travel distance value, N is the shrinkage preset distance times value, and S is the preset shrinkage distance value.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. Shorter materials pass through the sieve holes, enter the gap, and slide out from the discharge port to complete the discharge of the screened materials. After the longer materials enter the sieve holes, they are blocked by the elastic band due to their length and will not completely enter the gap, thus completing the screening function when the material cross-section is the same.

[0012] 2. Although the elastic belt can reduce the wear of the end of the material inserted into the sieve hole, the friction between the elastic belt and the material is relatively large. If the elastic belt does not move and the material is relatively fragile, the material may break under the action of friction. The elastic belt is driven by the transmission wheel to make the elastic belt and the material move synchronously. When a longer material enters the sieve hole, the relative displacement between the material and the elastic belt is reduced, avoiding continuous relative displacement between the material and the elastic belt, which may cause the material to break.

[0013] 3. Under the impact and extrusion of the material inside the screening drum, some longer materials may be tilted and stuck inside the sieve holes. Under the action of gravity, it is difficult to fall off automatically. Therefore, the present invention is provided with a pushing component, which actively pushes the elastic belt intermittently. When the elastic belt is pushed upward, the elastic belt stretches, and a relative displacement is generated between the elastic belt and the material through the deformation. Taking the left side of the screening drum as an example, when the material S is stuck and is in a downward tilted state, the friction of the elastic belt can drive the material to move upward and restore the state of vertical insertion into the sieve hole, thereby facilitating the separation of the material from the sieve hole.

[0014] Fourth, when material X is stuck and in an upward tilted state, when the elastic belt is reset, the relative displacement direction between the elastic belt and the material can be changed, so that through the friction of the elastic belt, the material can be driven to move downward to restore the state of vertical insertion into the sieve hole, thereby facilitating the separation of the material from the sieve hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention.

[0017] Figure 3 For the present invention Figure 2 Enlarged structural diagram at A in the middle.

[0018] Figure 4 It is a schematic diagram of the screening drum and elastic belt structure of the present invention.

[0019] Figure 5 It is a schematic diagram of the cross-sectional structure of the elastic band of the present invention.

[0020] Figure 6 For the present invention Figure 5 The enlarged structural diagram at B in FIG.

[0021] Figure 7 It is a schematic diagram of the cross-sectional structure of the elastic belt and screen of the present invention.

[0022] Figure 8 It is a schematic diagram of the structure of the discharge pipe, the receiving plate and the receiving trough of the present invention.

[0023] Fig. 9 It is a schematic diagram of the internal structure of the material in the sieve hole of the present invention.

[0024] Fig.10 It is a flow chart of the control method of the present invention.

[0025] In the figure: 1. Shell; 2. Screening drum; 3. Elastic belt; 4. Gap; 5. Drive wheel; 6. Mounting plate; 7. Screen; 8. First gear; 9. Second gear; 10. First motor; 11. Pipeline; 12. Feed inlet; 13. Through slot; 14. Feed chute; 15. First electric cylinder; 16. Sealing plate; 17. Feed inlet; 18. Screen hole; 19. Push column; 20. Push-pull member; 21. Base; 22. Slide plate; 23. First spring; 24. Limit column; 25. Discharge pipe; 26. Receiving plate; 27. Receiving chute; 28. Support spring; 29. ​​Pressure sensor; 30. Vibration motor. DETAILED DESCRIPTION

[0026] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0027] like Figures 1 to 9 The intelligent screening machine shown in the figure comprises a housing 1, a screening drum 2 is rotatably arranged inside the housing 1, and the screening drum 2 is in an inclined state, and further comprises: An elastic belt 3, the elastic belt 3 is sleeved on the outer side of the screening drum 2, and a gap 4 is provided between the elastic belt 3 and the screening drum 2; A transmission wheel 5, which is fixed on the screening drum 2 and is in transmission connection with the elastic belt 3; A pushing component is arranged inside the housing 1 and is used to intermittently push the elastic belt 3 located above the screening drum 2 to adjust the relative motion state between the elastic belt 3 and the material; Specifically, in the screening process in the prior art, the screen hole 18 is often the same as the cross section of the screened material. When the cross sections of the retained material and the screened material are the same, such as cylindrical particles of different lengths, the retained material may also pass through the screen hole 18 during screening. Therefore, when the cross sections of the materials are the same, screening is more difficult. It should be noted that the screening drum 2 includes two mounting plates 6, a screen 7 is fixed on the two mounting plates 6, a first gear 8 is fixed on the surface of the two mounting plates 6, a second gear 9 is meshed on one side of the first gear 8, the second gear 9 is coaxially fixed with a first motor 10, and the first motor 10 is fixed on the inner wall of the housing 1; A pipe 11 is provided in the middle of the screening drum 2, one end of the pipe 11 passes through the screening drum 2 and is provided with a feed port 12, and a through slot 13 is provided on the inner side of the pipe 11 located on the screening drum 2; A material discharge trough 14 is provided on one of the mounting plates 6, and a first electric cylinder 15 and a blocking plate 16 are provided in the material discharge trough 14; It should be further explained that the surface of the elastic band 3 is provided with a plurality of feed openings 17; When working, materials are added into the screening drum 2 through the feed port 12, and then the first motor 10 is started to drive the second gear 9 to rotate, the second gear 9 drives the first gear 8 to rotate, and the first gear 8 drives the mounting plate 6 and the screen 7 to rotate as a whole for screening; The shorter material passes through the sieve hole 18, enters the gap 4, and slides out from the discharge port 17, completing the discharge of the screened material; After the longer material enters the sieve hole 18, it is blocked by the elastic band 3 due to its length and thus does not completely enter the gap 4, thereby completing the screening function when the material cross-section is the same; Furthermore, although the elastic band 3 can reduce the wear of the end of the material inserted into the sieve hole 18, the friction between the elastic band 3 and the material is relatively large. If the elastic band 3 does not move and the material is relatively fragile, the material may be broken under the friction. The elastic belt 3 is driven by the driving wheel 5 so that the elastic belt 3 and the material move synchronously. When the longer material enters the sieve hole 18, the relative displacement between the material and the elastic belt 3 is reduced to avoid continuous relative displacement between the material and the elastic belt 3, which may cause the material to break. The vertically inserted material will gradually move to the top of the screening drum 2 as the screening drum 2 rotates, and finally fall under the action of gravity, thereby preventing the longer material from staying inside the screen hole 18 for a long time and affecting the screening efficiency; It should be further explained that, under the impact and extrusion of the material inside the screening drum 2, some longer materials may be tilted and stuck inside the sieve hole 18, and it is difficult to fall automatically under the action of gravity. Therefore, the present invention is provided with a pushing component, which actively pushes the elastic belt 3 intermittently. When the elastic belt 3 is pushed upward, the elastic belt 3 stretches, and a relative displacement is generated between the elastic belt 3 and the material through the deformation. Taking the left side of the screening drum 2 as an example, when the material S is stuck and is in a downward tilted state, the friction of the elastic belt 3 can drive the material to move upward to restore the state of being vertically inserted into the sieve hole 18, thereby facilitating the separation of the material from the sieve hole 18; When the material X is stuck and in an upward tilted state, when the elastic belt 3 is reset, the relative displacement direction between the elastic belt 3 and the material can be changed, so that through the friction of the elastic belt 3, the material can be driven to move downward to restore the state of being vertically inserted into the sieve hole 18, thereby facilitating the separation of the material from the sieve hole 18.

[0028] As a further embodiment of the present invention, the pushing assembly comprises: A push column 19, which is inserted into the inner side of the elastic band 3, and both sides of the push column 19 are rotatably connected with mounting seats; A push-pull member 20, which is fixed between the mounting seat and the housing 1; Specifically, the push-pull member 20 may be an electric cylinder, the fixed rod of the electric cylinder is fixed to the housing 1, and the movable rod of the electric cylinder is fixed to the mounting seat. By starting the electric cylinder to extend or contract, the height of the push column 19 can be adjusted, thereby pushing the elastic band 3 to deform. The push column 19 is rotatably connected to the mounting seat, thereby reducing the obstruction to the movement of the elastic band 3; Furthermore, when not pushing, the pushing column 19 is located on the inner side of the elastic belt 3, so that the top end of the elastic belt 3 is always in a raised state, which is also convenient for vertically inserting the material inside the sieve hole 18. When moving to this position, it can be separated from the elastic belt 3 to avoid friction affecting the falling of the material.

[0029] As a further embodiment of the present invention, the mounting seat comprises: A base 21 connected to the push-pull member 20; A slide plate 22, the slide plate 22 is slidably connected to the base 21; A pressure sensor 29, the pressure sensor 29 is fixed on the base 21; A first spring 23, the first spring 23 is arranged between the slide plate 22 and the pressure sensor 29; A limiting column 24, the limiting column 24 is fixed to the bottom of the slide plate 22; Specifically, intermittent pushing of the elastic band 3 for a long time may cause elastic fatigue, reduce the resilience of the elastic band 3, or cause the elastic band 3 to become permanently longer; The present invention sets a pressure sensor 29 to detect the pressure value when the elastic belt 3 rebounds. After the push-pull member 20 completes the standard travel distance, the detection is performed. When it is detected that the pressure value does not reach the set value, the electric cylinder is controlled to contract until the pressure value reaches the set value, and the electric cylinder stops contracting, thereby adjusting the tension of the elastic belt 3 so that the bottom of the elastic belt 3 can always fit the transmission wheel 5, avoiding the occurrence of gaps at the bottom, which causes shorter materials to be stuck.

[0030] As a further embodiment of the present invention, a material receiving assembly is provided inside the screening drum 2, and the material receiving assembly comprises: A discharge pipe 25, the discharge pipe 25 is fixed on the housing 1, and one end of the discharge pipe 25 passes through the screening drum 2 and extends into the interior of the screening drum 2; A receiving plate 26, the receiving plate 26 is fixed on the top of the discharge pipe 25, and a receiving groove 27 is provided on the top of the receiving plate 26, and the receiving groove 27 is communicated with the inside of the discharge pipe 25; Specifically, the material stuck in the sieve hole 18 must be a relatively long material. By setting a receiving plate 26, after the material falls onto the receiving plate 26, it can slide into the discharge pipe 25 for discharge, thereby preventing the relatively long material from falling back into the screening drum 2. Discharging some relatively long materials in time is conducive to reducing the difficulty of screening.

[0031] As a further embodiment of the present invention, a vibration device is provided at the bottom of the housing 1, and the vibration device comprises: A support spring 28, the support spring 28 is arranged at the bottom of the housing 1; A vibration motor 30, the vibration motor 30 is fixed on the surface of the housing 1; Specifically, since the tilting state of the material when stuck is different, and the relative displacement between the elastic band 3 and the materials with different tilting degrees is the same, under the pushing action of the elastic band 3, the material may be over-corrected, resulting in a change in the tilting direction of the material being stuck; The present invention provides a vibration motor 30 to cooperate with the elastic belt 3 for correction. During the correction process, the vibration motor 30 is started to vibrate the entire device synchronously. Under the effect of vibration, the corrected material can be separated from the sieve hole 18 in time.

[0032] like Fig.10 The control method of the intelligent screening machine shown in the figure also includes a controller, which can be a wireless controller or built into the housing 1. The control method includes the following steps: S1, the controller controls the push-pull member 20 to push the standard travel distance to reset; S2, the controller obtains a first pressure value generated by the pressure sensor 29 detecting the pressure information of the first spring 23 for the first time, and compares the first pressure value with a preset value. When the first pressure value does not reach the preset value, the controller generates first control information, which is used to control the push-pull member 20 to retract a preset distance, and the controller sends the first control information to the push-pull member 20; S3, the controller obtains a second pressure value generated by the pressure information of the first spring 23 detected by the pressure sensor 29 for the second time, and the controller compares the second pressure value with a preset value; S4. When the second pressure value reaches the set value, the controller generates adjustment information and adjusts the standard stroke distance of the electric cylinder according to the adjustment information; S5. When the second pressure value does not reach the preset value, third control information is generated, and the third control information is used to control the push-pull member 20 to retract the preset distance again. The controller sends the third control information to the push-pull member 20; S6. Repeat the above step S3 again.

[0033] As a further embodiment of the present invention, the adjusted standard travel distance value is calculated by the following formula: , where X is the adjusted standard travel distance value, is the original standard travel distance value, N is the shrinkage preset distance times value, and S is the preset shrinkage distance value.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. An intelligent screening machine, comprising a housing (1), wherein a screening drum (2) is rotatably arranged inside the housing (1), and the screening drum (2) is in an inclined state, characterized in that: Also includes: An elastic belt (3), the elastic belt (3) being sleeved on the outer side of the screening drum (2), and a gap (4) being provided between the elastic belt (3) and the screening drum (2); A transmission wheel (5), the transmission wheel (5) being fixed on the screening drum (2), the transmission wheel (5) being in transmission connection with the elastic belt (3); A pushing component, the pushing component being arranged inside the housing (1), the pushing component being used to intermittently push the elastic belt (3) located above the screening drum (2) to adjust the relative motion state between the elastic belt (3) and the material; The pushing component comprises: A push column (19), the push column (19) being inserted into the inner side of the elastic band (3), and both sides of the push column (19) being rotatably connected to mounting seats; A push-pull member (20), wherein the push-pull member (20) is fixed between the mounting seat and the housing (1); The mounting seat comprises: A base (21), wherein the base (21) is connected to the push-pull member (20); A slide plate (22), wherein the slide plate (22) is slidably connected to the base (21); A pressure sensor (29), wherein the pressure sensor (29) is fixed on the base (21); A first spring (23), wherein the first spring (23) is arranged between the slide plate (22) and the pressure sensor (29); A limiting column (24), wherein the limiting column (24) is fixed to the bottom of the slide plate (22).

2. The intelligent screening machine according to claim 1, characterized in that: A material receiving assembly is arranged inside the screening drum (2), and the material receiving assembly comprises: a discharge pipe (25), the discharge pipe (25) being fixed on the housing (1), one end of the discharge pipe (25) penetrating the screening drum (2) and extending into the interior of the screening drum (2); A material receiving plate (26) is fixed on the top of the material discharge pipe (25). A material receiving groove (27) is provided on the top of the material receiving plate (26). The material receiving groove (27) is communicated with the inside of the material discharge pipe (25).

3. The intelligent screening machine according to claim 1, characterized in that: A vibration device is provided at the bottom of the housing (1), and the vibration device comprises: A support spring (28), wherein the support spring (28) is arranged at the bottom of the housing (1); A vibration motor (30), wherein the vibration motor (30) is fixed on the surface of the housing (1).

4. A control method for an intelligent screening machine, using an intelligent screening machine as claimed in any one of claims 1 to 3, characterized in that: Also includes a controller, the control method comprises the following steps: S1, the controller controls the push-pull member (20) to push a standard travel distance to reset; S2, the controller obtains a first pressure value generated by the pressure sensor (29) detecting the pressure information of the first spring (23) for the first time, the controller compares the first pressure value with a preset value, and when the first pressure value does not reach the preset value, generates first control information, the first control information is used to control the push-pull member (20) to retract a preset distance, and the controller sends the first control information to the push-pull member (20); S3, the controller obtains a second pressure value generated by the pressure sensor (29) detecting the pressure information of the first spring (23) for the second time, and the controller compares the second pressure value with a preset value; S4. When the second pressure value reaches the set value, the controller generates adjustment information and adjusts the standard stroke distance of the electric cylinder according to the adjustment information; S5. When the second pressure value does not reach the preset value, third control information is generated, wherein the third control information is used to control the push-pull member (20) to retract the preset distance again, and the controller sends the third control information to the push-pull member (20); S6. Repeat the above step S3 again.

5. The control method of an intelligent screening machine according to claim 4, characterized in that: The adjusted standard travel distance value is calculated by the following formula: , Among them, X is the standard travel distance value after adjustment, is the original standard travel distance value, N is the shrinkage preset distance times value, and S is the preset shrinkage distance value.

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