Feed screening device for drilling rock debris processing and using method

Abstract

The invention discloses a feed screening device for drilling rock debris processing and a using method, and relates to the technical field of drilling rock debris processing.The device comprises a screening box body and a first screening plate, a first smashing roller and a second smashing roller are arranged in the screening box body, and a second screening plate is arranged below the first screening plate; a second screening plate is arranged in the screening box body, a material guiding plate is tightly attached to one end of the second screening plate, guiding blocks are symmetrically arranged at the upper end of the material guiding plate, a refining and smashing mechanism is arranged in the screening box body, and a material returning mechanism is arranged on one side of the screening box body. By arranging a first crushing roller and a second crushing roller, large-size rock debris can be conveniently crushed, a third crushing roller and a fourth crushing roller are used for refining and crushing the rock debris, the rock debris can meet the use requirement after being screened by a second screening plate, and by arranging a conveying pipe and an auger plate, the rock debris can be conveniently and circularly screened and crushed; and the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of drilling cuttings processing, in particular to a feed screening device for drilling cuttings processing and a use method thereof. Background Art

[0002] During the drilling process, the underground rock formation is broken by the drill bit and returned to the ground with the mud, and a large amount of drilling cuttings are carried in the mud returning to the ground. Since the drilling cuttings have a certain continuity with the change of the formation, the drilling cuttings can reflect the lithology of the formations at different levels. The drilling cuttings are sent to the thermal desorption device after pretreatment, and the drilling cuttings are dried and the oil is evaporated in the device to form a gaseous mixed steam. The steam enters the condensation device for cooling, and the collected condensate enters the condensate treatment device for treatment and separation. The recovered oil obtained by separation enters the oil storage tank, and then refined to obtain furnace fuel oil. Before entering the thermal desorption equipment, the drilling cuttings need to be crushed and screened so that the diameter of the drilling cuttings is less than 50mm.

[0003] The announcement number is: CN214718143U, which discloses a drilling mud cuttings screening device, which screens fine cuttings and large cuttings by setting a coarse filtering component and a cuttings filtering screen, and the above-mentioned screening device only has a screening function, so that after screening, in order to use the large cuttings, the large cuttings need to be crushed, and the above-mentioned screening device does not crush the cuttings, so that a large amount of cuttings will be screened out during screening, and after screening, the staff needs to take out the screened cuttings, and after crushing them by the crushing component, multiple screening and crushing are required to make the cuttings meet the processing requirements, and in the process of multiple crushing and screening, the cuttings need to be transferred manually, which will increase the workload of the staff in actual use, and will waste a lot of time in the transfer process, thereby affecting the screening efficiency of cuttings processing.

[0004] Based on this, a feed screening device for drilling cuttings processing and a method of use are now provided, which can eliminate the disadvantages of existing devices. Summary of the invention

[0005] The object of the present invention is to provide a feed screening device for drilling cuttings processing and a method for using the device, so as to solve the problem in the background technology that it is inconvenient to perform cyclic screening and crushing of the cuttings.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A feeding and screening device for processing drilling cuttings comprises a screening box and a first screening plate, the upper end of the screening box is connected to a feeding box, a first crushing roller and a second crushing roller are arranged at a position corresponding to the output end of the feeding box inside the screening box, a conveyor belt is arranged below the first crushing roller, one end of the conveyor belt is located above the first screening plate, a driving assembly for driving the first crushing roller and the conveyor belt to rotate is arranged at the upper end of the screening box, the first screening plate is arranged inside the screening box, a second screening plate is arranged below the first screening plate, the second screening plate is arranged inside the screening box, a guide plate is closely arranged at one end of the second screening plate, guide blocks are symmetrically arranged at the upper end of the guide plate, a return port is arranged at the inner side of the screening box and between the two guide blocks, a refining crushing mechanism for refining and crushing drilling cuttings is arranged at a position corresponding to one end of the first screening plate inside the screening box, and a return mechanism for transmitting cuttings is arranged at one side of the screening box corresponding to the position of the return port.

[0008] On the basis of the above technical solution, the present invention also provides the following optional technical solution:

[0009] In an optional scheme: the driving assembly includes a first motor, the first motor is fixedly arranged on the upper end of the screening box, the output end of the first motor is transmission-connected to the inner spline sleeve shaft through a first belt, a rotating plate is symmetrically rotated on the inner spline sleeve shaft, the rotating plates are all fixedly arranged on the upper end of the screening box body, an outer spline shaft is slidingly arranged inside the inner spline sleeve shaft, the outer spline shaft and the inner spline sleeve shaft are connected by spline cooperation, one end of the outer spline shaft is rotationally connected to the output end of the electric push rod, the electric push rod is fixedly arranged on the upper end of the screening box body, the other end of the outer spline shaft is fixedly provided with a first friction wheel, and the first friction wheel is frictionally provided with a third friction wheel The third friction wheel is fixedly arranged on the rotating shaft at one end of the second crushing roller, and a first gear is fixedly arranged on the rotating shaft at the other end of the second crushing roller, and a second gear is meshed with the first gear, and the second gear is fixedly arranged on the rotating shaft at one end of the first crushing roller, and the first crushing roller and the second crushing roller are symmetrically arranged, and a fixed baffle is fixedly arranged at the upper end of the inner part of the screening box body corresponding to the positions of the first crushing roller and the second crushing roller, and a driving roller and a transmission roller are respectively arranged at both ends of the transmission belt, and the driving roller and the transmission roller are both rotatably arranged in the mounting hole inside the screening box body, and the rotating shaft at one end of the first crushing roller is transmission-connected with the rotating shaft at one end of the driving roller through a second belt.

[0010] In an optional scheme: the refining crushing mechanism includes a third crushing roller and a fourth crushing roller, the third crushing roller and the fourth crushing roller are symmetrically arranged, the rotating shafts at both ends of the third crushing roller and the fourth crushing roller are rotatably arranged in the mounting hole inside the screening box, a sliding storage box is slidably provided on the rotating shafts at both ends of the third crushing roller and the fourth crushing roller, and a first fixed plate is fixedly provided around the sliding storage box, a first fixed plate is fixedly provided with a first guide slide bar at the bottom end of the first fixed plate, a second fixed plate is slidably provided on the first guide slide bar, and the second fixed plate is fixedly provided inside the screening box, a first return spring is provided between the bottom end of the first fixed plate and the upper end of the second fixed plate, the rotating shaft at one end of the third crushing roller is transmission-connected to the output end of the first motor through a third belt, a third gear is fixedly provided on the rotating shaft at the other end of the third crushing roller, a fourth gear is meshed on the third gear, and the fourth gear is fixedly provided on the rotating shaft at one end of the fourth crushing roller, and a material blocking component for controlling the feed amount inside the sliding storage box is provided inside the screening box.

[0011] In an optional solution: the material blocking assembly includes a sliding material blocking plate, both sides of the sliding material blocking plate are slidably provided with guide groove rods, the guide groove rods are fixedly arranged inside the screening box, the sliding material blocking plate is arranged above one end of the first screening plate, the upper end of the sliding material blocking plate is symmetrically provided with sliding grooves, a second guide slide bar is slidably arranged in the sliding groove, one end of the second guide slide bar is fixedly provided with a third fixed plate, the third fixed plate is fixedly arranged at the upper end of the screening box, and a fourth fixed plate is fixedly arranged at the upper end of the sliding material blocking plate and the second guide slide bar coaxially A fixed plate, a second return spring is provided between the upper end of the fourth fixed plate and the bottom end of the third fixed plate, the upper end of the sliding material blocking plate is fixedly connected to one end of the traction rope, and a plurality of guide plates are slidably provided on the traction rope, and the plurality of guide plates are fixedly provided on the upper end of the screening box, and the other end of the traction rope is fixedly connected to the output end of the electric push rod, and the electric push rod is electrically connected to the travel switch, and the travel switch is fixedly provided on the upper end of the fifth fixed plate, and the fifth fixed plate is fixedly provided inside the screening box, and the travel switch is coaxially arranged with one end of a first guide slide rod.

[0012] In an optional solution: protective plates are rotatably provided on the rotating shafts at both ends of the third crushing roller and the fourth crushing roller, and sliding grooves are provided inside the sliding storage box at positions corresponding to the positions of the protective plates.

[0013] In an optional solution: a second friction wheel is fixedly provided on the external spline shaft, a fourth friction wheel is frictionally provided on the second friction wheel, and the fourth friction wheel is fixedly provided on the rotating shaft at one end of the second crushing roller.

[0014] In an optional scheme: the return material mechanism includes a transmission pipe, the transmission pipe is fixedly arranged on one side of the screening box, the input end of the transmission pipe is connected with the return material port, an installation shaft is rotatably provided inside the transmission pipe, an auger plate is fixedly arranged on the installation shaft, one end of the installation shaft is fixedly connected with the output end of the second motor, the second motor is fixedly arranged on the upper end of the transmission pipe, the output end of the transmission pipe is connected with a return material pipe, and the discharge end of the return material pipe is located above the sliding storage box.

[0015] In an optional solution: a vibration motor is provided at the bottom end of each of the first sieve plate and the second sieve plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention provides a first crushing roller, a second crushing roller, a third crushing roller and a fourth crushing roller, so that the first crushing roller and the second crushing roller are convenient for crushing larger rock chips. At the same time, a conveyor belt is provided to prevent the first screening plate from being damaged when the rock chips fall. The rock chips that have been initially crushed are initially screened when passing through the first screening plate. The rock chips screened by the first screening plate fall into the sliding storage box, so that the third crushing roller and the fourth crushing roller refine and crush the rock chips. After screening by the second screening plate, the rock chips meet the use requirements. By providing a transmission pipe and an auger plate, the rock chips screened by the second screening plate are transmitted through the auger plate and then retransmitted to the sliding storage box for crushing, so that the rock chips can be circulated and screened and crushed, thereby improving production efficiency.

[0018] 2. The present invention sets a travel switch, a sliding baffle plate, an electric push rod, a second friction wheel and a fourth friction wheel, so that when the crushing speeds of the third crushing roller and the fourth crushing roller are weakened, the crushing speeds of the first crushing roller and the second crushing roller are reduced, and the sliding baffle plate blocks the rock cuttings falling from the upper end of the first screening plate, thereby preventing the third crushing roller and the fourth crushing roller from being blocked, thereby increasing the practicability of the feed screening device for drilling rock cuttings processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the transmission of the first crushing roller and the conveyor belt of the present invention.

[0021] Figure 3 It is a schematic diagram of the internal structure of the screening box of the present invention.

[0022] Figure 4 It is a schematic diagram of the internal structure of the return pipe of the present invention.

[0023] Figure 5 It is a schematic diagram of the structure of the sliding baffle plate of the present invention.

[0024] Figure 6 This is a schematic diagram of the structure of the sliding storage box of the present invention.

[0025] Figure 7 It is a schematic diagram of the connection between the electric push rod and the external spline shaft of the present invention.

[0026] Figure 8 This is a schematic diagram of the installation of the first friction wheel and the second friction wheel of the present invention.

[0027] Fig. 9 It is a schematic diagram of the structure of the external spline shaft and the internal spline sleeve shaft of the present invention.

[0028] Notes on figure numbers: 11 screening box, 12 feeding box, 13 first crushing roller, 14 conveyor belt, 15 first screening plate, 16 sliding storage box, 17 first return spring, 18 third crushing roller, 19 protective plate, 20 travel switch, 21 sliding material baffle plate, 22 traction rope, 23 electric push rod, 24 second return spring, 25 second screening plate, 26 vibration motor, 27 first motor, 28 external spline shaft, 29 internal spline sleeve shaft, 30 first friction wheel, 31 second friction wheel, 32 guide plate, 33 guide block, 34 transmission pipe, 35 auger plate, 36 second motor, 37 return pipe. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0030] Example 1

[0031] In one embodiment, Figure 1-Figure 9As shown, a feed screening device for drilling cuttings processing comprises a screening box 11 and a first screening plate 15, wherein the upper end of the screening box 11 is connected to a feed box 12, wherein a first crushing roller 13 and a second crushing roller are arranged inside the screening box 11 at a position corresponding to the output end of the feed box 12, wherein a conveyor belt 14 is arranged below the first crushing roller 13, wherein one end of the conveyor belt 14 is located above the first screening plate 15, wherein a driving assembly for driving the first crushing roller 13 and the conveyor belt 14 to rotate is arranged at the upper end of the screening box 11, wherein the first screening plate 15 is arranged inside the screening box 11, wherein a second screening plate 25 is arranged below the first screening plate 15, and wherein the second screening plate 25 is arranged at the Inside the screening box 11, a guide plate 32 is closely attached to one end of the second screening plate 25, and a guide block 33 is symmetrically arranged on the upper end of the guide plate 32. A return port is arranged between the inner side of the screening box 11 and the two guide blocks 33. A refining and crushing mechanism for refining and crushing drilling cuttings is arranged at a position corresponding to one end of the first screening plate 15 inside the screening box 11. A return mechanism for transmitting cuttings is arranged at a position corresponding to the return port on one side of the screening box 11. The refining and crushing mechanism facilitates re-crushing of the cuttings screened by the first screening plate 15, and the return mechanism facilitates the transmission of the cuttings screened by the second screening plate 25, so that the cuttings are re-refined and crushed.

[0032] The driving assembly includes a first motor 27, which is fixedly arranged at the upper end of the screening box 11. The output end of the first motor 27 is transmission-connected to the inner spline sleeve 29 through a first belt. The inner spline sleeve 29 is symmetrically provided with a rotating plate, and the rotating plates are all fixedly arranged at the upper end of the screening box 11. An outer spline shaft 28 is slidingly arranged inside the inner spline sleeve 29. The outer spline shaft 28 is connected to the inner spline sleeve 29 through a spline fit. One end of the outer spline shaft 28 is rotationally connected to the output end of the electric push rod 23. The electric push rod 23 is fixedly arranged at the upper end of the screening box 11. The other end of the outer spline shaft 28 is fixedly provided with The first friction wheel 30 is frictionally provided with a third friction wheel, the third friction wheel is fixedly provided on a rotating shaft at one end of the second crushing roller, the first gear is fixedly provided on the rotating shaft at the other end of the second crushing roller, the first gear is meshed with a second gear, the second gear is fixedly provided on a rotating shaft at one end of the first crushing roller 13, the first crushing roller 13 and the second crushing roller are symmetrically arranged, a fixed baffle is fixedly provided at the upper end of the inner part of the screening box 11 corresponding to the positions of the first crushing roller 13 and the second crushing roller, a driving roller and a transmission roller are respectively provided at both ends of the conveyor belt 14, the driving roller and the transmission roller are both rotatably arranged on the screening box 11 In the inner mounting hole, the rotating shaft at one end of the first crushing roller 13 is connected to the rotating shaft at one end of the driving roller through the second belt. When in use, when the drilling cuttings need to be screened, the cuttings are placed inside the feed box 12, and then the first motor 27 is started. The first driving wheel on the output end of the first motor 27 is connected to the first driven wheel on the inner spline sleeve shaft 29 through the first belt, so that the inner spline sleeve shaft 29 drives the outer spline shaft 28 to rotate, and the outer spline shaft 28 drives the first friction wheel 30 to rotate. Then the output end of the electric push rod 23 pushes the outer spline shaft 28 to move, so that the first friction wheel 30 is in close contact with the third friction wheel, so that the second crushing roller rotates, and the second The crushing roller is meshed with the second gear through the first gear, so that the second crushing roller and the first crushing roller 13 rotate simultaneously and in opposite directions, thereby crushing large pieces of rock cuttings. At the same time, the second driving wheel on the rotating shaft at one end of the first crushing roller 13 is connected to the second driven wheel on the rotating shaft at one end of the driving roller through the second belt, so that the driving roller and the transmission roller cooperate to rotate the conveyor belt 14. The rock cuttings crushed by the first crushing roller 13 and the second crushing roller fall on the upper end of the conveyor belt 14, and the conveyor belt 14 transmits the rock cuttings to the upper end of the first screening plate 15. Since the first screening plate 15 is inclined, the rock cuttings are screened while rolling on the upper end of the first screening plate 15.

[0033] The refining crushing mechanism comprises a third crushing roller 18 and a fourth crushing roller, the third crushing roller 18 and the fourth crushing roller are symmetrically arranged, and the rotating shafts at both ends of the third crushing roller 18 and the fourth crushing roller are rotatably arranged in the mounting holes inside the screening box 11, and sliding storage boxes 16 are slidably arranged on the rotating shafts at both ends of the third crushing roller 18 and the fourth crushing roller, and the sliding storage box 16 is fixedly provided with a first fixed plate all around, and the bottom end of the first fixed plate is fixedly provided with a first guide slide bar, and the first guide slide bar is slidably provided with a second fixed plate, and the second fixed plate is fixedly arranged inside the screening box 11, and a first return spring 17 is provided between the bottom end of the first fixed plate and the upper end of the second fixed plate, and the rotating shaft at one end of the third crushing roller 18 is transmission-connected to the output end of the first motor 27 through a third belt, and a third gear is fixedly arranged on the rotating shaft at the other end of the third crushing roller 18, and a fourth gear is meshed on the third gear, and the fourth gear is fixedly arranged on the rotating shaft at one end of the fourth crushing roller. When in use, when it is needed When the rock chips screened by the first screening plate 15 are finely crushed, the third driving wheel on the output end of the first motor 27 is connected to the third driven wheel on the rotating shaft at one end of the third crushing roller 18 through the third belt, and the third crushing roller 18 is meshed with the fourth gear through the third gear, so that the third crushing roller 18 and the protective plate 19 rotate at the same time, and the rotation directions are opposite, and the rock chips screened by the first screening plate 15 fall into the sliding storage box 16, and then the third crushing roller 18 cooperates with the fourth crushing roller to crush the rock chips. The crushed rock chips fall on the upper end of the second screening plate 25. Since the second screening plate 25 is inclined, the rock chips falling through the first screening plate 15 and the rock chips after fine crushing are all screened by the second screening plate 25. The rock chips with qualified crushing diameter fall through the second screening plate 25 to the bottom end of the screening box 11. The bottom end of the screening box 11 is inclined so that the rock chips are discharged through the discharge port. A material blocking component for controlling the feed amount inside the sliding storage box 16 is provided inside the screening box 11.

[0034] The material blocking assembly includes a sliding material blocking plate 21, both sides of which are slidably provided with guide groove rods, and the guide groove rods are fixedly arranged inside the screening box 11. The sliding material blocking plate 21 is arranged above one end of the first screening plate 15, and the upper end of the sliding material blocking plate 21 is symmetrically provided with sliding grooves, and a second guide slide bar is slidably arranged in the sliding groove, and a third fixed plate is fixedly arranged at one end of the second guide slide bar, and the third fixed plate is fixedly arranged at the upper end of the screening box 11. The upper end of the sliding material blocking plate 21 is fixedly provided with a coaxial portion with the second guide slide bar. A fourth fixed plate, a second return spring 24 is provided between the upper end of the fourth fixed plate and the bottom end of the third fixed plate, the upper end of the sliding material blocking plate 21 is fixedly connected to one end of the traction rope 22, a plurality of guide plates are slidably provided on the traction rope 22, and the plurality of guide plates are fixedly arranged on the upper end of the screening box 11, the other end of the traction rope 22 is fixedly connected to the output end of the electric push rod 23, the electric push rod 23 is electrically connected to the travel switch 20, the travel switch 20 is fixedly arranged on the upper end of the fifth fixed plate, the fifth fixed plate is fixedly arranged inside the screening box 11, the The travel switch 20 is coaxially arranged with one end of a first guide slide bar. When in use, when the third crushing roller 18 and the fourth crushing roller slow down the crushing speed of the rock cuttings, as the first screening plate 15 continuously transports the rock cuttings into the sliding storage box 16, the weight inside the sliding storage box 16 increases, and the sliding storage box 16 slides along the axis direction of the first guide slide bar. When one end of the first guide slide bar touches the travel switch 20, the travel switch 20 controls the output end of the electric push rod 23 to extend. Since the electric push rod 23 is in the initial state, the output end of the electric push rod 23 pulls the slide through the traction rope 22. The movable baffle plate 21 rises, and when the output end of the electric push rod 23 moves, one end of the traction rope 22 changes from an inclined position to a straight position, so that under the action of several second return springs 24, the bottom end of the sliding baffle plate 21 is tightly attached to the upper end of the first screening plate 15, thereby preventing rock chips from entering the sliding storage box 16. When the rock chips inside the sliding storage box 16 are crushed, under the action of several first return springs 17, the sliding storage box 16 returns to its initial position, and at the same time, the travel switch 20 controls the output end of the electric push rod 23 to return to its initial position, so that normal crushing and screening work can be carried out.

[0035] Protective plates 19 are rotatably provided on the rotating shafts at both ends of the third crushing roller 18 and the fourth crushing roller, and sliding grooves are provided inside the sliding storage box 16 at positions corresponding to the positions of the protective plates 19, which can prevent rock chips from being discharged through the limiting slide grooves on both sides of the sliding storage box 16 when in use.

[0036] A second friction wheel 31 is fixedly provided on the external spline shaft 28, and a fourth friction wheel is frictionally provided on the second friction wheel 31. The fourth friction wheel is fixedly provided on the rotating shaft at one end of the second crushing roller. When in use, when the output end of the electric push rod 23 moves, the output end of the electric push rod 23 causes the first friction wheel 30 to separate from the third friction wheel, and the second friction wheel 31 is in close contact with the fourth friction wheel. Since the cross-sectional diameter of the second friction wheel 31 is smaller than the cross-sectional diameter of the fourth friction wheel, the rotation speeds of the first crushing roller 13 and the second crushing roller are reduced, and the rotation speed of the conveyor belt 14 is changed at the same time, so that the rock chips falling on the upper end of the first screening plate 15 are reduced.

[0037] The return mechanism includes a transmission pipe 34, which is fixedly arranged on one side of the screening box 11, and the input end of the transmission pipe 34 is connected to the return port. A mounting shaft is rotatably provided inside the transmission pipe 34, and a auger plate 35 is fixedly arranged on the mounting shaft. One end of the mounting shaft is fixedly connected to the output end of the second motor 36, and the second motor 36 is fixedly arranged on the upper end of the transmission pipe 34. A return pipe 37 is connected to the output end of the transmission pipe 34, and the discharge end of the return pipe 37 is located above the sliding storage box 16. When in use, when the rock cuttings screened by the second screening plate 25 are discharged through the return port, the second motor 36 is started, and the output end of the second motor 36 drives the auger plate 35 to rotate, and the rock cuttings enter the transmission pipe 34. The auger plate 35 is rotated to transmit the rock cuttings, so that the rock cuttings are re-transmitted to the sliding storage box 16 through the return pipe 37, so that they are cyclically crushed by the third crushing roller 18 and the fourth crushing roller, so that the rock cuttings meet the use requirements.

[0038] Example 2

[0039] The difference from Example 1 is that a vibration motor 26 is provided at the bottom of the first screening plate 15 and the second screening plate 25, which can increase the rock chip screening effect of the first screening plate 15 and the second screening plate 25 when in use.

[0040] The above embodiment discloses a feeding and screening device for drilling cuttings processing, wherein when the drilling cuttings are screened, the cuttings are placed inside the feed box 12, and then the first motor 27 is started, so that the second crushing roller and the first crushing roller 13 rotate simultaneously to crush the large pieces of cuttings, and at the same time the conveyor belt 14 conveys the cuttings to the upper end of the first screening plate 15, and the cuttings are screened while rolling on the upper end of the first screening plate 15, and the output end of the first motor 27 simultaneously drives the third crushing roller 18 and the protective plate 19 to rotate simultaneously, and the cuttings screened by the first screening plate 15 fall into the sliding storage box 16, and then the third crushing roller 18 and the fourth crushing roller cooperate to crush the cuttings, and the crushed cuttings fall on the upper end of the second screening plate 25, and the cuttings with qualified crushing diameter pass through the second screening plate 25 and fall on the bottom end of the screening box 11, and are discharged through the discharge port;

[0041] When the rock chips screened by the second screening plate 25 are discharged through the return port, the second motor 36 is started, and the auger plate 35 rotates to transfer the rock chips, so that the rock chips are re-transferred to the inside of the sliding storage box 16 through the return pipe 37, so that the rock chips are cyclically crushed by the third crushing roller 18 and the fourth crushing roller, so that the rock chips meet the use requirements;

[0042] When the third crushing roller 18 and the fourth crushing roller slow down the speed of crushing rock chips, the weight inside the sliding storage box 16 increases, and when one end of a first guide slide bar touches the travel switch 20, the travel switch 20 controls the output end of the electric push rod 23 to extend, and the second friction wheel 31 is in close contact with the fourth friction wheel, so that the rotation speed of the first crushing roller 13, the second crushing roller and the conveyor belt 14 is reduced, and the rock chips falling on the upper end of the first screening plate 15 are reduced. At the same time, the bottom end of the sliding material baffle plate 21 is in close contact with the upper end of the first screening plate 15 to prevent rock chips from entering the sliding storage box 16.

[0043] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A feed screening device for drilling cuttings processing, comprising a screening box (11) and a first screening plate (15), wherein the upper end of the screening box (11) is connected to a feed box (12), a first crushing roller (13) and a second crushing roller are arranged inside the screening box (11) at positions corresponding to the output end of the feed box (12), a conveyor belt (14) is arranged below the first crushing roller (13), one end of the conveyor belt (14) is located above the first screening plate (15), a driving assembly for driving the first crushing roller (13) and the conveyor belt (14) to rotate is arranged at the upper end of the screening box (11), and the first screening plate (15) is arranged inside the screening box (11), characterized in that: A second screen plate (25) is provided below the first screen plate (15), the second screen plate (25) is arranged inside the screen box (11), a guide plate (32) is closely provided at one end of the second screen plate (25), a guide block (33) is symmetrically provided at the upper end of the guide plate (32), a return port is provided between the inner side of the screen box (11) and the two guide blocks (33), a refining and crushing mechanism for refining and crushing drilling cuttings is provided inside the screen box (11) at a position corresponding to one end of the first screen plate (15), and a return port for transporting cuttings is provided at a side of the screen box (11) at a position corresponding to the return port.

2. A feed screening device for drilling cuttings processing according to claim 1, characterized in that: The driving assembly comprises a first motor (27), the first motor (27) being fixedly arranged at the upper end of the screening box (11), the output end of the first motor (27) being transmission-connected to an inner spline sleeve shaft (29) via a first belt, a rotating plate being symmetrically rotatably arranged on the inner spline sleeve shaft (29), the rotating plates being fixedly arranged at the upper end of the screening box (11), an outer spline shaft (28) being slidingly arranged inside the inner spline sleeve shaft (29), the outer spline shaft (28) being connected to the inner spline sleeve shaft (29) via a spline fit, one end of the outer spline shaft (28) being rotationally connected to the output end of an electric push rod (23), the electric push rod (23) being fixedly arranged at the upper end of the screening box (11), the other end of the outer spline shaft (28) being fixedly arranged with a first friction wheel (30), the first A third friction wheel is frictionally arranged on a friction wheel (30), the third friction wheel is fixedly arranged on a rotating shaft at one end of a second crushing roller, a first gear is fixedly arranged on a rotating shaft at the other end of the second crushing roller, a second gear is meshed with the first gear, the second gear is fixedly arranged on a rotating shaft at one end of the first crushing roller (13), the first crushing roller (13) and the second crushing roller are symmetrically arranged, a fixed baffle is fixedly arranged at the upper end of the interior of the screening box (11) at positions corresponding to the first crushing roller (13) and the second crushing roller, a driving roller and a transmission roller are respectively arranged at both ends of the transmission belt (14), the driving roller and the transmission roller are both rotatably arranged in the mounting hole inside the screening box (11), and the rotating shaft at one end of the first crushing roller (13) is transmission-connected with the rotating shaft at one end of the driving roller via a second belt.

3. A feed screening device for drilling cuttings processing according to claim 2, characterized in that: The refinement and pulverization mechanism comprises a third pulverization roller (18) and a fourth pulverization roller, the third pulverization roller (18) and the fourth pulverization roller are symmetrically arranged, the rotating shafts at both ends of the third pulverization roller (18) and the fourth pulverization roller are rotatably arranged in the mounting holes inside the screening box (11), a sliding material storage box (16) is slidably arranged on the rotating shafts at both ends of the third pulverization roller (18) and the fourth pulverization roller, a first fixed plate is fixedly arranged around the sliding material storage box (16), a first guide slide bar is fixedly arranged at the bottom end of the first fixed plate, a second fixed plate is slidably arranged on the first guide slide bar, and the first The two fixed plates are fixedly arranged inside the screening box (11); a first return spring (17) is arranged between the bottom end of the first fixed plate and the top end of the second fixed plate; a rotating shaft at one end of the third crushing roller (18) is transmission-connected to the output end of the first motor (27) via a third belt; a third gear is fixedly arranged on the rotating shaft at the other end of the third crushing roller (18); a fourth gear is meshed with the third gear; the fourth gear is fixedly arranged on the rotating shaft at one end of the fourth crushing roller; and a material blocking component for controlling the feed amount inside the sliding storage box (16) is arranged inside the screening box (11).

4. A feed screening device for drilling cuttings processing according to claim 3, characterized in that: The material blocking assembly comprises a sliding material blocking plate (21), both sides of which are slidably provided with guide groove rods, and the guide groove rods are fixedly arranged inside the screening box (11), the sliding material blocking plate (21) is arranged above one end of the first screening plate (15), the upper end of the sliding material blocking plate (21) is symmetrically provided with sliding grooves, and a second guide slide bar is slidably arranged in the sliding groove, and a third fixed plate is fixedly arranged at one end of the second guide slide bar, and the third fixed plate is fixedly arranged at the upper end of the screening box (11), and a fourth fixed plate is fixedly arranged at the upper end of the sliding material blocking plate (21) coaxially with the second guide slide bar, and the upper end of the fourth fixed plate A second return spring (24) is provided between the bottom end of the third fixed plate, the upper end of the sliding material blocking plate (21) is fixedly connected to one end of a traction rope (22), a plurality of guide plates are slidably provided on the traction rope (22), the plurality of guide plates are fixedly provided on the upper end of the screening box (11), the other end of the traction rope (22) is fixedly connected to the output end of the electric push rod (23), the electric push rod (23) is electrically connected to the travel switch (20), the travel switch (20) is fixedly provided on the upper end of the fifth fixed plate, the fifth fixed plate is fixedly provided inside the screening box (11), and the travel switch (20) is coaxially provided with one end of a first guide slide rod.

5. A feed screening device for drilling cuttings processing according to claim 3, characterized in that: Protective plates (19) are rotatably provided on the rotating shafts at both ends of the third crushing roller (18) and the fourth crushing roller, and sliding grooves are provided inside the sliding storage box (16) at positions corresponding to the protective plates (19).

6. A feed screening device for drilling cuttings processing according to claim 4, characterized in that: A second friction wheel (31) is fixedly arranged on the external spline shaft (28), a fourth friction wheel is frictionally arranged on the second friction wheel (31), and the fourth friction wheel is fixedly arranged on a rotating shaft at one end of the second crushing roller.

7. A feed screening device for drilling cuttings processing according to claim 3, characterized in that: The return material mechanism comprises a transmission pipe (34), the transmission pipe (34) is fixedly arranged on one side of the screening box (11), the input end of the transmission pipe (34) is connected with the return material port, a mounting shaft is rotatably arranged inside the transmission pipe (34), a auger plate (35) is fixedly arranged on the mounting shaft, one end of the mounting shaft is fixedly connected with the output end of the second motor (36), the second motor (36) is fixedly arranged on the upper end of the transmission pipe (34), a return material pipe (37) is connected with the output end of the transmission pipe (34), and the discharge end of the return material pipe (37) is located above the sliding storage box (16).

8. A feed screening device for drilling cuttings processing according to claim 1, characterized in that: A vibration motor (26) is provided at the bottom end of each of the first screening plate (15) and the second screening plate (25).

9. A method for using a feed screening device for drilling cuttings processing according to any one of claims 1 to 8, characterized in that: The steps include: Step 1, rock cuttings are placed inside the feed box (12), the first motor (27) is started, the second crushing roller and the first crushing roller (13) crush the large rock cuttings, the conveyor belt (14) conveys the rock cuttings to the upper end of the first screening plate (15), the first screening plate (15) screens the rock cuttings, the rock cuttings screened by the first screening plate (15) fall into the sliding storage box (16), the third crushing roller (18) and the fourth crushing roller cooperate to crush the rock cuttings, the crushed rock cuttings fall on the upper end of the second screening plate (25), the rock cuttings with qualified crushing diameter pass through the second screening plate (25) and fall on the bottom end of the screening box (11), and are discharged through the discharge port; Step 2, the rock chips screened by the second screening plate (25) are discharged through the return port, the second motor (36) is started, the auger plate (35) rotates to transfer the rock chips, so that the rock chips are re-transmitted to the inside of the sliding storage box (16) through the return pipe (37), and are cyclically crushed by the third crushing roller (18) and the fourth crushing roller, so that the rock chips meet the use requirements; Step 3, when the third crushing roller (18) and the fourth crushing roller slow down the speed of crushing rock chips, the travel switch (20) controls the output end of the electric push rod (23) to extend, the second friction wheel (31) is in close contact with the fourth friction wheel, the rotation speed of the first crushing roller (13), the second crushing roller and the conveyor belt (14) is reduced, and at the same time, the bottom end of the sliding material blocking plate (21) is in close contact with the upper end of the first screening plate (15) to prevent rock chips from entering the sliding storage box (16).

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