Fluctuating roller screening machine, hydraulic station and roller spacing adjustment method thereof

Abstract

The invention relates to the technical field of screening machines, in particular to an undulating roller screening machine and a hydraulic station thereof and a roller spacing adjustment method, comprising a frame, a plurality of bearing seats being arranged on the frame, a rotating shaft being rotatably connected to the bearing seats, an undulating roller being sleeved between each set of rotating shafts, a sliding rail being arranged on the side wall, a first fixing hole being arranged on the side wall at one end of the sliding rail, and a second fixing hole being arranged at the other end; the sliding bearing seat being slidably connected to the sliding rail, the fixed bearing seat being mounted on the side wall of the frame through the first fixing hole, and a first hydraulic cylinder being mounted on the side wall of the frame through the second fixing hole; a second hydraulic cylinder being arranged between the fixed bearing seat and an adjacent sliding bearing seat and between two adjacent sliding bearing seats; the first hydraulic cylinder and the second hydraulic cylinder cooperating with each other, the rapid adjustment of the spacing between the undulating rollers is realized, and the applicability of the undulating roller screening machine is improved.

Description

Technical Field

[0001] The invention relates to the technical field of screening machines, in particular to an undulating roller screening machine and a hydraulic station and a roller spacing adjustment method thereof. Background Art

[0002] In the original market, most of the undulating roller screening machines are fixed-distance undulating roller screening machines. The roller spacing needs to be determined according to the needs of the products produced. For example, if the particle size of the clinker ore produced by the mine needs to be controlled below 45mm, the roller spacing of the undulating roller is set to 45mm. If the particle size of the aggregate ore produced needs to be controlled below 80mm, the roller spacing of the undulating roller is set to 80mm. After the roller spacing is determined, it is difficult to adjust it again. It is impossible to adjust the spacing between the rollers on the equipment in time according to the actual screening needs, which reduces the applicability of the equipment.

[0003] In order to improve the applicability of the equipment, there is an undulating roller feeder such as application number CN202110381693.3 in the prior art, comprising: a feeder housing, a rotating shaft, an undulating roller sleeved on the rotating shaft, and a protective housing located above the feeder housing, a guide rail is arranged between the side wall of the protective housing and the side wall of the feeder housing, a sliding bearing seat is arranged on the guide rail, a bearing is embedded and installed in the sliding bearing seat, and the two ends of the rotating shaft are respectively inserted into the bearings opposite to each other on both sides; through the guide rail and the sliding bearing seat, the sliding fit between the feeder housing and the undulating roller is realized, and the gap between the undulating rollers is adjustable; however, it is found in actual use that the following problems exist in the prior art: 1. The prior art determines the roller pitch by a positioning block. When adjusting the roller pitch, workers need to take out the positioning blocks one by one, and then replace the positioning blocks of new thickness, which wastes manpower and delays the working hours for a long time, seriously affecting the production progress; 2. Each undulating roller needs to be driven by a motor, which not only has the problems of high hardware cost and high maintenance cost, but also increases the space occupied by the equipment, and the equipment wiring is also very complicated. Summary of the invention

[0004] In view of the deficiencies in the prior art, the object of the present invention is to provide an undulating roller screening machine and a hydraulic station and roller gap adjustment method that are convenient for adjusting the roller gap of the undulating roller.

[0005] The technical solution adopted by the present invention to solve its technical problem is: The undulating roller screening machine comprises a frame, and the frame is equipped with several groups of bearing seats, each group of two bearing seats are respectively installed on the side walls of the frame, each bearing seat is rotatably connected with a rotating shaft, and a undulating roller is sleeved between the two rotating shafts of each group of bearing seats, and a sliding rail is arranged on the side wall, and a first fixing hole is arranged on the side wall at one end of the sliding rail, and a second fixing hole is arranged at the other end; the bearing seat comprises a group of fixed bearing seats and at least two groups of sliding bearing seats, the sliding bearing seats are slidably connected to the sliding rail, the fixed bearing seat is installed on the side wall of the frame through the first fixing hole, and the first hydraulic cylinder is installed on the side wall of the frame through the second fixing hole, and the output end of the first hydraulic cylinder is located on the side close to the sliding rail; the second hydraulic cylinder is arranged between the fixed bearing seat and the adjacent sliding bearing seat, and between two adjacent sliding bearing seats.

[0006] Preferably, a further technical solution of the present invention is: Preferably, the sides of the fixed bearing seat and the sliding bearing seat are both provided with a third mounting hole, the second hydraulic cylinder is installed on the fixed bearing seat or the sliding bearing seat through the third mounting hole, and the output end of the second hydraulic cylinder abuts against the side of the adjacent fixed bearing seat or the sliding bearing seat; the output end of the first hydraulic cylinder abuts against the side of the adjacent sliding bearing seat.

[0007] Preferably, it also includes a driving mechanism, which includes a driving motor and several groups of sprocket transmission mechanisms, and the output shaft of the driving motor is connected to any rotating shaft; each group of sprocket transmission mechanisms includes a main sprocket, a secondary sprocket and a chain connecting the main sprocket and the secondary sprocket; the main sprocket and the secondary sprocket are respectively mounted on two adjacent rotating shafts, and each group of sprocket transmission mechanisms corresponds to a group of tensioning adjustment mechanisms to adjust the chain tension.

[0008] Preferably, the tensioning adjustment mechanism includes a guide wheel, a spring and a connecting rod. The guide wheel is arranged on the lower side of the main sprocket and the secondary sprocket and is meshed with the chain. The lower end of the connecting rod is hinged to the side wall, and the upper end is hinged to the guide wheel. The lower end of the spring is fixed to the side wall, and the upper end is connected to the connecting rod, and the spring is always in a stretched state.

[0009] Preferably, it also includes a first scraper plate and a second scraper plate, wherein both ends of the first scraper plate are mounted on the side walls of the frame and are located on the lower side of the fixed bearing seat; a scraper mounting seat is provided at the bottom of the sliding bearing seat, and a second scraper plate is installed between the two scraper mounting seats of each group of sliding bearing seats; the upper parts of the first scraper plate and the second scraper plate are scraping parts, and the shape is adapted to the undulating roller.

[0010] Preferably, a sliding groove adapted to the sliding rail is provided at the bottom of the sliding bearing seat.

[0011] Preferably, a contact pressure sensor is provided on the side of the sliding bearing seat closest to the first hydraulic cylinder to detect the pressure between the end of the piston rod of the first hydraulic cylinder.

[0012] Preferably, a first lining plate and a second lining plate overlapped with each other are provided between the fixed bearing seat and the sliding bearing seat, and between the sliding bearing seats, and a third lining plate is provided on the side of the sliding bearing seat at the end close to the first hydraulic cylinder.

[0013] The present invention also discloses a hydraulic station for an undulating roller screening machine, which specifically includes an oil tank, a hydraulic pump connected to the oil tank, and a driving motor for driving the hydraulic pump. The oil outlet of the hydraulic pump is connected to a first reversing valve, the working port A of the first reversing valve is connected in parallel to the first hydraulic cylinders on both sides, the working port B of the first reversing valve is connected in parallel to a plurality of second reversing valves, and the oil outlet of each second reversing valve is connected in parallel to a group of second hydraulic cylinders, a group of two, which are symmetrically arranged on the side walls on both sides.

[0014] The present invention also discloses a roller spacing adjustment method for an undulating roller screening machine, which specifically comprises the following steps: Initial roller distance adjustment: All second hydraulic cylinders are in the retracted state, and the first hydraulic cylinder maintains pressure after reaching the maximum stroke; Adjustment of the spacing between the wave rollers: first adjust the spacing between the sliding bearing seats adjacent to the fixed bearing seats, and the output of the second hydraulic cylinder between the fixed bearing seat and the adjacent sliding bearing seat is adjusted to the preset stroke and then maintained under pressure. During adjustment, the other second hydraulic cylinders are in a retracted state and the first hydraulic cylinder is in a retracted state; then adjust the next-level second hydraulic cylinder in turn, adjust it to the preset stroke and then maintain pressure. During adjustment, all the lower-level second hydraulic cylinders and the first hydraulic cylinder of the second hydraulic cylinder being adjusted are in a retracted state; after all the second hydraulic cylinders are in the pressure-maintaining state, the first hydraulic cylinder outputs to the pressure between its piston rod end and the adjacent sliding bearing seat to reach the preset pressure and then maintain pressure.

[0015] Compared with the prior art, the present invention adopting the above technical solution has the following outstanding features: 1. The roller spacing adjustment is realized, so that the screening machine can change the spacing between adjacent fluctuating rollers according to actual production needs, so as to screen materials of different particle sizes and shapes, expand the range of materials that can be processed by the equipment, and improve the applicability of the equipment; 2. Multi-stage screening is achieved, for example: the roller distance is increased or kept unchanged in the direction of material conveying, so that the material can be separated more finely and reasonably during the screening process, and the accuracy and efficiency of screening are improved; 3. The screen roller will wear out after a period of use, resulting in changes in the roller spacing that affect the screening effect. The roller spacing adjustment can compensate for the gap changes caused by wear to a certain extent and maintain a stable screening quality; 4. The roller distance is adjusted by the cooperation between the first hydraulic cylinder and the second hydraulic cylinder. The first hydraulic cylinder and the second hydraulic cylinder have the advantages of fast response speed, high adjustment accuracy, simple operation and stable operation when adjusting. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1Schematic diagram of the connection structure between the fixed bearing seat and the sliding bearing seat in an embodiment of the present invention; Figure 2 is a schematic structural diagram of a fixed bearing seat in an embodiment of the present invention; Figure 3 It is a structural schematic diagram of a sliding bearing seat in an embodiment of the present invention; Figure 4 is a schematic structural diagram of another sliding bearing seat in an embodiment of the present invention; Figure 5 is a schematic structural diagram of a second hydraulic cylinder in an embodiment of the present invention; Figure 6 is a schematic structural diagram of a first hydraulic cylinder in an embodiment of the present invention; Figure 7 is a schematic diagram of the side wall structure of the frame in an embodiment of the present invention; Figure 8 is a schematic diagram of the connection structure of the driving mechanism and the tensioning adjustment mechanism in an embodiment of the present invention; Fig. 9 2 is a schematic diagram of the structure of a hydraulic station for an undulating roller screening machine according to an embodiment of the present invention; Fig.10 Schematic diagram of the structure of the second scraper plate in the embodiment of the present invention.

[0017] Explanation of the reference numerals in the accompanying drawings: 1. frame; 101. first fixing hole; 2. fixed bearing seat; 3. sliding bearing seat; 4. first hydraulic cylinder; 5. second hydraulic cylinder; 6. third mounting hole; 7. first lining plate; 8. second lining plate; 9. third lining plate; 10. scraper mounting seat; 11. slide groove; 12. slide rail; 13. rotating shaft; 14. main sprocket; 15. secondary sprocket; 16. chain; 17. guide wheel; 18. connecting rod; 19. spring; 20. first reversing valve; 21. second reversing valve; 22. undulating roller; 23. second scraper. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with specific embodiments, the purpose of which is only to provide a better understanding of the content of the present invention. Therefore, the examples given do not limit the protection scope of the present invention.

[0019] like Figures 1 to 6 The present embodiment provides a wave roller type screening machine, including a frame 1, the frame 1 is equipped with a plurality of groups of bearing seats, each group of two bearing seats are respectively installed on the side walls of the frame 1, each bearing seat is rotatably connected to a rotating shaft 13, and a wave roller 22 is sleeved between the two rotating shafts 13 of each group of bearing seats; Figure 7, a slide rail 12 is arranged on the side wall, a first fixing hole 101 is arranged on the side wall at one end of the slide rail 12, and a second fixing hole is arranged on the other end; the bearing seat includes a set of fixed bearing seats 2 and at least two sets of sliding bearing seats 3, the sliding bearing seats 3 are slidably connected to the slide rail 12 through the slide groove 11, the fixed bearing seat 2 is installed on the side wall of the frame 1 through the first fixing hole 101, and the first hydraulic cylinder 4 is installed on the side wall of the frame 1 through the second fixing hole, and the output end of the first hydraulic cylinder 4 is located on the side close to the slide rail 12; a second hydraulic cylinder 5 is arranged between the fixed bearing seat 2 and the adjacent sliding bearing seat 3, and between two adjacent sliding bearing seats 3. Among them, the side surfaces of the fixed bearing seat 2 and the sliding bearing seat 3 are both provided with a third mounting hole 6, the second hydraulic cylinder 5 is installed on the fixed bearing seat 2 or the sliding bearing seat 3 through the third mounting hole 6, and the output end of the second hydraulic cylinder 5 abuts against the side surface of the adjacent fixed bearing seat 2 or the sliding bearing seat 3; the output end of the first hydraulic cylinder 4 abuts against the side surface of the adjacent sliding bearing seat 3.

[0020] Correspondingly, a roller spacing adjustment method for an undulating roller 22 type screening machine is provided, which specifically comprises the following steps: adjusting the undulating roller 22 and the undulating roller 22 to an initial roller spacing: all the second hydraulic cylinders 5 are in a retracted state, and the first hydraulic cylinder 4 maintains pressure after reaching the maximum stroke; adjusting the undulating roller 22 to a preset roller spacing: in this embodiment, Figure 1 For example, there are 4 sets of sliding bearing seats 3, which are, from left to right, two first-level sliding bearing seats 3, two second-level sliding bearing seats 3, two third-level sliding bearing seats 3, and two fourth-level sliding bearing seats 3. Correspondingly, there are four second hydraulic cylinders 5, which are, from left to right, the first-level second hydraulic cylinder 5, the second-level second hydraulic cylinder 5, the third-level second hydraulic cylinder 5, and the fourth-level second hydraulic cylinder 5. When adjusting, first adjust the distance between the fixed bearing seat 2 and the first-level sliding bearing seat 3, and then the first-level second hydraulic cylinder 5 outputs and adjusts to the preset stroke and then maintains the pressure , when the first-level second hydraulic cylinder 5 is outputting, the other second hydraulic cylinders 5 are in a retracted state, and the first hydraulic cylinder 4 is in a retracted state; then the second-level second hydraulic cylinder 5, the third-level second hydraulic cylinder 5, and the fourth-level second hydraulic cylinder 5 are adjusted in sequence, and the pressure is maintained after adjusting to the preset stroke. During the adjustment, all the lower-level second hydraulic cylinders 5 and the first hydraulic cylinder 4 of the second hydraulic cylinder 5 being adjusted are in a retracted state; after all the second hydraulic cylinders 5 are in a pressure-maintaining state, the first hydraulic cylinder 4 outputs to the pressure between its piston rod end and the fourth-level sliding bearing seat 3 to reach the preset pressure and then maintain the pressure.

[0021] A contact pressure sensor is provided on the side of the sliding bearing seat 3 closest to the first hydraulic cylinder 4 to detect the pressure between the piston rod end of the first hydraulic cylinder 4. When the wave roller 22 is adjusted to the preset roller distance, all the second hydraulic cylinders 5 are in the pressure-maintaining state, and the contact pressure sensor is used to determine whether the output of the first hydraulic cylinder 4 to the piston rod end and the fourth-level sliding bearing seat 3 reaches the preset pressure. The contact pressure sensor can be a piezoelectric pressure sensor, a capacitive pressure sensor, etc.

[0022] like Figure 8 In this embodiment, the undulating roller 22 type screening machine also includes a driving mechanism, which specifically includes a driving motor and a plurality of sprocket transmission mechanisms. The output shaft of the driving motor is connected to any rotating shaft 13; each sprocket transmission mechanism includes a main sprocket 14, a secondary sprocket 15 and a chain 16 connecting the main sprocket 14 and the secondary sprocket 15; the main sprocket 14 and the secondary sprocket 15 are respectively mounted on two adjacent rotating shafts 13, and each sprocket transmission mechanism corresponds to a tension adjustment mechanism to adjust the tension of the chain 16. Figure 8 The tension adjustment mechanism includes a guide wheel 17, a spring 19 and a connecting rod 18. The guide wheel 17 is arranged at the lower side of the primary sprocket 14 and the secondary sprocket 15, and is meshed with the chain 16. The lower end of the connecting rod 18 is hinged to the side wall, and the upper end is hinged to the guide wheel 17. The lower end of the spring 19 is fixed to the side wall, and the upper end is connected to the connecting rod 18, and the spring 19 is always in a stretched state. Furthermore, when adjusting the roller pitch of the wave roller 22, the elastic force of the spring 19 ensures that the chain 16 is always in a taut state to prevent the chain 16 from jumping.

[0023] It also includes a first scraper plate and a second scraper plate 23, the two ends of the first scraper plate are installed on the side walls of the frame 1 and are located at the lower side of the fixed bearing seat 2; Figure 3 , Figure 4 , Fig.10 A scraper mounting seat 10 is provided at the bottom of the sliding bearing seat 3, and a second scraper plate 23 is installed between the two scraper mounting seats 10 of each group of sliding bearing seats 3; the upper part of the first scraper plate and the second scraper plate 23 is a scraper part, and the shape is adapted to the wave roller 22.

[0024] like Figures 1 to 4 As shown, a first lining plate 7 and a second lining plate 8 are provided between the fixed bearing seat 2 and the sliding bearing seat 3, and between the sliding bearing seats 3 and the sliding bearing seats 3, and a third lining plate 9 is provided on the side of the sliding bearing seat 3 at the end close to the first hydraulic cylinder 4; when the sliding bearing seat 3 moves, the overlapping part between the first lining plate 7 and the second lining plate 8 and the third lining plate 9 are used to prevent side leakage of materials.

[0025] The present invention also discloses a hydraulic station for an undulating roller 22 type screening machine, the hydraulic station specifically comprising an oil tank, a hydraulic pump connected to the oil tank, and a driving motor for driving the hydraulic pump, the oil outlet of the hydraulic pump is connected to the oil inlet of a first reversing valve 20, the working port A of the first reversing valve 20 is connected in parallel to the first hydraulic cylinders 4 on both sides, the working port B of the first reversing valve 20 is connected in parallel to a plurality of second reversing valves 21, the oil outlet of each second reversing valve 21 is connected in parallel to a group of second hydraulic cylinders 5, a group of two, symmetrically arranged on the side walls on both sides, so as to Figure 1 , Fig. 9 For example, in this embodiment, four second reversing valves 21 are provided, and the four second reversing valves 21 correspond to four groups of sliding bearing seats 3 respectively.

[0026] Through the present invention, roller spacing adjustment is realized, and the applicability of the equipment is improved; the gap change caused by wear can be compensated to a certain extent, and the stable screening quality can be maintained; the roller spacing is adjusted by the cooperation of the first hydraulic cylinder 4 and the second hydraulic cylinder 5, and the first hydraulic cylinder 4 and the second hydraulic cylinder 5 have the advantages of fast response speed, high adjustment accuracy, simple operation, stable operation, etc. when adjusting.

[0027] The above description is only the preferred embodiment of the present invention, and does not limit the scope of rights of the present invention. All equivalent changes made by using the contents of the present invention specification and its drawings are included in the scope of rights of the present invention.

Claims

1. The undulating roller screening machine comprises a frame, on which are mounted a plurality of sets of bearing seats, each set of two bearing seats being mounted on the side walls of the frame, respectively, each bearing seat being rotatably connected with a rotating shaft, and an undulating roller being sleeved between the two rotating shafts of each set of bearing seats, characterized in that: A slide rail is arranged on the side wall, a first fixing hole is arranged on one end of the slide rail, and a second fixing hole is arranged on the other end of the side wall; The bearing seat includes a group of fixed bearing seats and at least two groups of sliding bearing seats, the sliding bearing seats are slidably connected to the slide rails, the fixed bearing seats are installed on the side wall of the frame through the first fixing holes, the first hydraulic cylinder is installed on the side wall of the frame through the second fixing holes, and the output end of the first hydraulic cylinder is located on the side close to the slide rails; A second hydraulic cylinder is arranged between the fixed bearing seat and the adjacent sliding bearing seat, and between two adjacent sliding bearing seats.

2. The undulating roller screening machine according to claim 1, characterized in that: The sides of the fixed bearing seat and the sliding bearing seat are both provided with a third mounting hole, and the second hydraulic cylinder is installed on the fixed bearing seat or the sliding bearing seat through the third mounting hole, and the output end of the second hydraulic cylinder abuts against the side of the adjacent fixed bearing seat or the sliding bearing seat; the output end of the first hydraulic cylinder abuts against the side of the adjacent sliding bearing seat.

3. The undulating roller screening machine according to claim 1, characterized in that: It also includes a driving mechanism, which includes a driving motor and a plurality of sprocket transmission mechanisms, and the output shaft of the driving motor is connected to any rotating shaft; Each set of sprocket transmission mechanisms includes a main sprocket, a secondary sprocket and a chain connecting the main sprocket and the secondary sprocket; the main sprocket and the secondary sprocket are respectively mounted on two adjacent rotating shafts, and each set of sprocket transmission mechanisms corresponds to a set of tension adjustment mechanisms to adjust the chain tension.

4. The undulating roller screening machine according to claim 3, characterized in that: The tensioning adjustment mechanism includes a guide wheel, a spring and a connecting rod. The guide wheel is arranged on the lower side of the main sprocket and the secondary sprocket and is meshed with the chain. The lower end of the connecting rod is hinged to the side wall, and the upper end is hinged to the guide wheel. The lower end of the spring is fixed to the side wall, and the upper end is connected to the connecting rod, and the spring is always in a stretched state.

5. The undulating roller screening machine according to claim 1, characterized in that: It also includes a first scraper plate and a second scraper plate, wherein both ends of the first scraper plate are mounted on the side walls of the frame and are located on the lower side of the fixed bearing seat; a scraper mounting seat is provided at the bottom of the sliding bearing seat, and a second scraper plate is installed between the two scraper mounting seats of each group of sliding bearing seats; the upper parts of the first scraper plate and the second scraper plate are scraping parts, and the shapes are adapted to the wave roller.

6. The undulating roller screening machine according to claim 1, characterized in that: A slide groove matched with the slide rail is arranged at the bottom of the sliding bearing seat.

7. The undulating roller screening machine according to claim 1, characterized in that: A contact pressure sensor is arranged on the side of the sliding bearing seat closest to the first hydraulic cylinder to detect the pressure between the sliding bearing seat and the end of the piston rod of the first hydraulic cylinder.

8. The undulating roller screening machine according to claim 1, characterized in that: A first lining plate and a second lining plate overlapped with each other are arranged between the fixed bearing seat and the sliding bearing seat, and between the sliding bearing seats. A third lining plate is arranged on the side of the sliding bearing seat at the end close to the first hydraulic cylinder.

9. A hydraulic station for an undulating roller screening machine, wherein the undulating roller screening machine is adjusted according to any one of claims 1 to 8, characterized in that: The hydraulic station specifically includes an oil tank, a hydraulic pump connected to the oil tank, and a driving motor for driving the hydraulic pump. The oil outlet of the hydraulic pump is connected to the first reversing valve. The working port A of the first reversing valve is connected in parallel to the first hydraulic cylinders on both sides. The working port B of the first reversing valve is connected in parallel to a number of second reversing valves. The oil outlet of each second reversing valve is connected in parallel to a group of second hydraulic cylinders, a group of two, which are symmetrically arranged on the side walls on both sides.

10. A roller spacing adjustment method for an undulating roller screening machine, characterized in that: The adjustable undulating roller screening machine as claimed in any one of claims 1 to 8 comprises the following steps: Initial roller distance adjustment: All second hydraulic cylinders are in the retracted state, and the first hydraulic cylinder maintains pressure after reaching the maximum stroke; Adjustment of the spacing between the wave rollers: first adjust the spacing between the sliding bearing seats adjacent to the fixed bearing seats, and the output of the second hydraulic cylinder between the fixed bearing seat and the adjacent sliding bearing seat is adjusted to the preset stroke and then maintained under pressure. During adjustment, the other second hydraulic cylinders are in a retracted state and the first hydraulic cylinder is in a retracted state; then adjust the next-level second hydraulic cylinder in turn, adjust it to the preset stroke and then maintain pressure. During adjustment, all the lower-level second hydraulic cylinders and the first hydraulic cylinder of the second hydraulic cylinder being adjusted are in a retracted state; after all the second hydraulic cylinders are in the pressure-maintaining state, the first hydraulic cylinder outputs to the pressure between its piston rod end and the adjacent sliding bearing seat to reach the preset pressure and then maintain pressure.

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