A compression roller pressure structure and a roller press

Abstract

The present application provides a kind of pressure roller pressurization structure, comprising: two pressure rollers are oppositely arranged on the frame, at least one of two pressure rollers is slidably arranged relative to the frame;First pressure roller seat and second pressure roller seat, first pressure roller seat is arranged on one of two pressure rollers, and second pressure roller seat is arranged on the other of two pressure rollers;Pressing cylinder, including cylinder body and piston rod, cylinder body is arranged on first pressure roller seat, and piston rod is slidably arranged in cylinder body and extends out of cylinder body to connect second pressure roller seat.Such arrangement can provide power for the movement of pressure roller and provide pressurizing pressure of two pressure rollers;Pressurizing pressure will not be directly transmitted to the frame, which reduces the requirements for the frame, so that the processing difficulty and cost of the frame can be reduced;And can reduce the pressure fluctuation between two pressure rollers;Also can adjust the relative gap of two pressure rollers.The present application also provides a kind of roller press, comprising frame and the pressure roller pressurization mechanism as described above, the frame can meet the requirements of structural strength without using integrated process, so that the installation of pressure roller is more convenient.

Description

Technical Field

[0001] This invention relates to the field of roller press technology, and in particular to a pressure roller pressing structure and a roller press. Background Technology

[0002] The existing roller press 100 usually has two opposing and rotating pressure rollers 130. Material with a certain material pressure is continuously fed into the space between the two pressure rollers 130 through the feeding device. At the same time, the hydraulic system applies a strong extrusion force to the pressure rollers 130. Under high pressure, the material becomes a compacted cake and is discharged from the bottom of the machine.

[0003] However, as Figure 1 As shown, in most current roller presses 100, the hydraulic cylinder 110 is mounted on the frame 120 to apply pressure to the pressure roller 130. The frame 120 bears the pressure applied by the hydraulic cylinder 110, which requires high structural strength from the frame 120, making the frame 120 difficult to process and costly. In addition, to meet the structural strength requirements, the frame 120 can be manufactured using a one-piece molding process. However, the shape of the frame 120 manufactured by the one-piece molding process is relatively limited, which will bring difficulties to the installation of the pressure roller 130. Summary of the Invention

[0004] In order to overcome at least one of the defects described in the prior art, the present invention provides a pressure roller pressing structure, which aims to avoid the frame bearing the pressing pressure of the pressing cylinder; the present invention also provides a roller press, including the pressure roller pressing structure as described above.

[0005] The technical solution adopted by this invention to solve its problem is:

[0006] A pressure roller pressing structure is applied to a roller press. The roller press has a frame, and the pressure roller pressing structure includes: two pressure rollers, which are disposed opposite to each other on the frame, with at least one of the two pressure rollers slidably disposed relative to the frame; a first pressure roller seat and a second pressure roller seat, which are disposed opposite to each other, with the first pressure roller seat disposed on one of the two pressure rollers and the second pressure roller seat disposed on the other of the two pressure rollers; and a pressing cylinder, including a cylinder body and a piston rod, with the cylinder body disposed on the first pressure roller seat, the piston rod slidably disposed on the cylinder body, and the piston rod extending out of the cylinder body and connected to the second pressure roller seat.

[0007] The pressure roller pressing structure provided by this invention has two aspects: firstly, the pressing cylinder provides power for the movement of the pressure rollers and provides pressing pressure to the two pressure rollers; secondly, when the pressing cylinder presses, the pressing pressure is transmitted between the first pressure roller seat, the second pressure roller seat, and the two pressure rollers, and the pressing pressure is not directly transmitted to the frame, which reduces the requirements for the frame and reduces the processing difficulty and cost of the frame; in addition, by setting the first pressure roller seat and the second pressure roller seat to bear the pressing pressure of the pressing cylinder, the pressure fluctuation between the two pressure rollers can be reduced, thereby improving the stability and working efficiency of the roller press; importantly, the relative distance between the first pressure roller seat and the second pressure roller seat can be adjusted by the relative sliding of the piston rod and the cylinder body, thereby adjusting the relative gap between the two pressure rollers. The structure is simple and the function is easy to implement.

[0008] According to some embodiments of the present invention, the cylinder body is at least partially embedded in the first pressure roller seat, and the piston rod extends out of the first pressure roller seat to connect to the second pressure roller seat.

[0009] By adopting the above solution, on the one hand, the space occupied by the pressure roller pressing structure can be reduced, and on the other hand, the assembly stability of the cylinder can be improved and the influence of the transverse shear stress on the pressing cylinder can be reduced.

[0010] According to some embodiments of the present invention, the piston rod is detachably connected to the second pressure roller seat; when the piston rod is disassembled from the second pressure roller seat, the piston rod retracts into the first pressure roller seat to form a space for component replacement.

[0011] By adopting the above solution, when the piston rod is removed from the second pressure roller seat, the piston rod will retract to the first pressure roller seat, so that space can be created between the two pressure rollers to facilitate the replacement of parts and routine maintenance.

[0012] According to some embodiments of the present invention, the pressure roller pressing structure further includes a locking member disposed on the second pressure roller seat, and the piston rod is detachably connected to the second pressure roller seat through the locking member; the locking member includes a first locking block and a second locking block, the first locking block and the second locking block are detachably connected, and the first locking block and the second locking block form a clamping and fixing of the piston rod.

[0013] By adopting the above solution, on the one hand, the connection between the piston rod and the second pressure roller seat becomes more stable and reliable; on the other hand, the disassembly of the piston rod becomes more convenient and labor-saving.

[0014] According to some embodiments of the present invention, the first pressure roller seat and the second pressure roller seat are respectively disposed at the ends of the two pressure rollers.

[0015] By adopting the above scheme, on the one hand, the first pressure roller seat and the second pressure roller seat occupy the material extrusion space of the two pressure rollers, thereby improving the work efficiency, and on the other hand, the installation and maintenance of the pressure roller pressurizing structure are facilitated.

[0016] According to some embodiments of the present application, the first pressure roller seat is provided with at least two, and the second pressure roller seat is provided with at least two; the at least two first pressure roller seats are respectively arranged on both sides of one of the pressure rollers; and the at least two second pressure roller seats are respectively arranged on both sides of the other pressure roller.

[0017] By adopting the above scheme, the two pressure rollers can be better supported, and the stress of the two pressure rollers is more balanced, thereby improving the working stability and efficiency of the two pressure rollers.

[0018] According to some embodiments of the present application, the pressure roller pressurizing structure further comprises a thickness adjusting mechanism, which can adjust the relative distance between the first pressure roller seat and the second pressure roller seat.

[0019] By adopting the above scheme, the forming thickness of the green brick between the two pressure rollers can be adjusted.

[0020] According to some embodiments of the present application, the thickness adjusting mechanism comprises a nut and a lifting screw rod; the nut is arranged on the first pressure roller seat, and the lifting screw rod is connected to the second pressure roller seat and screwed to the nut; or, the nut is arranged on the second pressure roller seat, and the lifting screw rod is connected to the first pressure roller seat and screwed to the nut.

[0021] By adopting the above scheme, the thickness adjusting mechanism has the advantages of compact structure, easy implementation and low manufacturing cost.

[0022] According to some embodiments of the present application, the thickness adjusting mechanism further comprises a driving device, which drives the lifting screw rod to rotate and lift.

[0023] By adopting the above scheme, the driving device can automatically adjust the relative distance between the two pressure rollers, which is convenient and labor-saving.

[0024] According to some embodiments of the present application, the machine frame comprises the pressure roller pressurizing structure as described above.

[0025] By adopting the above scheme, the machining requirements and manufacturing cost of the machine frame are reduced, and the machine frame can also meet the structural strength requirements without using an integrated process, so that the assembly of the pressure roller is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structural schematic view of the existing pressurizing structure and the roller press;

[0027] Figure 2 It is a structural schematic diagram of the embodiment one of the application;

[0028] Figure 3 It is a structural schematic diagram of the locking piece of the embodiment one of the application;

[0029] Figure 4 It is a structural schematic diagram of the thickness adjusting mechanism of the embodiment one of the application;

[0030] Figure 5 It is a structural schematic diagram of the embodiment two of the application.

[0031] In the drawings, the reference signs have the following meanings:

[0032] 1-roller press, 2-pressing cylinder, 21-cylinder body, 22-piston rod, 3-first pressure roller seat, 4-second pressure roller seat, 5-locking piece, 51-first locking block, 52-second locking block, 53-locking screw, 6-thickness adjusting mechanism, 61-nut, 62-lifting screw rod, 63-driving device, 7-first transmission assembly, 71-first driving roller, 72-first driven roller, 73-first conveying belt, 8-second transmission assembly, 81-second driving roller, 82-second driven roller, 83-second conveying belt, 84-second motor, 9-pressure roller. DETAILED DESCRIPTION

[0033] In order to better understand and implement, the technical solutions in the embodiments of the application will be clearly and completely described below in combination with the drawings in the embodiments of the application.

[0034] In the description of the application, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the application belongs. The terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the application.

[0036] Embodiment one

[0037] Please refer to Figure 2 The application discloses a pressure roller pressing structure and a roller press 1 with the pressure roller pressing structure, the roller press 1 has a rack, the pressure roller pressing structure comprises a first pressure roller seat 3, a second pressure roller seat 4, a pressing cylinder 2 and two pressure rollers 9.

[0038] Further, in the embodiment, the two pressure rollers 9 are oppositely arranged on the frame, one pressure roller 9 is arranged below the frame and one pressure roller 9 is arranged above the frame, and the pressure roller 9 above the frame is slidable relative to the frame and can be pressed downward relative to the pressure roller 9 below the frame, wherein the first pressure roller seat 3 is arranged on the pressure roller 9 below the frame, and the second pressure roller seat 4 is arranged on the pressure roller 9 above the frame; the pressing cylinder 2 comprises a cylinder body 21 and a piston rod 22, the cylinder body 21 is arranged on the first pressure roller seat 3, and the piston rod 22 is slidably arranged in the cylinder body 21, the piston rod 22 extends out of the cylinder body 21 and is connected with the second pressure roller seat 4; specifically, at this time, the first pressure roller seat 3 and the cylinder body 21 are both located below the frame, and the second pressure roller seat 4 is located above the frame.

[0039] It should be noted that in some other embodiments, the pressure roller 9 below the frame can be movable relative to the frame, so as to be able to press upward relative to the pressure roller 9 above the frame, which is not limited here.

[0040] In this way, through the above scheme, on the one hand, the pressing cylinder 2 can provide power for the movement of the pressure roller 9 and can exert a pressing pressure between the two pressure rollers 9, so that the material entering between the two pressure rollers 9 becomes a compacted cake under the action of high pressure and is discharged from the machine.

[0041] On the other hand, when the pressing cylinder 2 is pressurized, the pressurizing pressure is transmitted between the first pressure roller seat 3, the second pressure roller seat 4, and the two pressure rollers 9, and the pressurizing pressure is not directly transmitted to the frame, thereby reducing the requirements on the frame and reducing the processing difficulty and cost of the frame; moreover, the frame can also meet the requirement of structural strength without using an integrated process, so that the assembly of the pressure roller 9 is more convenient.

[0042] In addition, by arranging the first pressure roller seat 3 and the second pressure roller seat 4 to bear the pressurizing pressure of the pressing cylinder 2, the pressure fluctuation between the two pressure rollers 9 can be reduced, thereby improving the working stability and working efficiency of the roller press 1.

[0043] Importantly, the relative distance between the first pressure roller seat 3 and the second pressure roller seat 4 can also be adjusted through the relative sliding of the piston rod 22 and the cylinder body 21, so as to adjust the relative gap between the two pressure rollers 9, which is simple in structure and easy to realize the function.

[0044] Further, as shown in FIG. 1, the roller press 1 further comprises a first pressure roller 9a and a second pressure roller 9b, the first pressure roller 9a is arranged on the first pressure roller seat 3, and the second pressure roller 9b is arranged on the second pressure roller seat 4. Figure 2As shown, in the embodiment, the cylinder body 21 is partially embedded in the first pressure roller seat 3, the piston rod 22 is slidably arranged in the cylinder body 21, and the piston rod 22 penetrates through the first pressure roller seat 3 to be connected to the second pressure roller seat 4. In this way, the footprint of the pressure roller pressing structure can be reduced, the assembly stability of the cylinder body 21 can be improved, and the influence of the transverse shear stress on the pressing cylinder 2 can be reduced. It should be noted that in some other embodiments, the cylinder body 21 can also be completely embedded in the first pressure roller seat 3, or the cylinder body 21 can be fixed to the plane of the first pressure roller seat 3 by bolts or screws, which is not limited herein.

[0045] Preferably, in the embodiment, the height of the first pressure roller seat 3 and the second pressure roller seat 4 in the vertical direction is less than the height of the pressure roller 9 in the vertical direction. In this way, the footprint of the pressure roller pressing structure can be further reduced.

[0046] Further, in the embodiment, the roller press 1 comprises a first transmission assembly 7 and a second transmission assembly 8. The material is transported by the first transmission assembly 7 and is extruded between the first transmission assembly 7 and the second transmission assembly 8.

[0047] Specifically, the first transmission assembly 7 comprises a first motor (not shown), a first driving roller 71, a first driven roller 72, and a first conveyor belt 73. The first conveyor belt 73 is wound around the first driving roller 71 and the first driven roller 72. The first motor drives the first driving roller 71 to rotate, and the first conveyor belt 73 is tensioned and drives the first driven roller 72 to rotate.

[0048] Specifically, the second transmission assembly 8 comprises a second motor 84, a second driving roller 81, a second driven roller 82, and a second conveyor belt 83. The second motor 84 drives the second driving roller 81 to rotate, and the second conveyor belt 83 is wound around the second driving roller 81 and the second driven roller 82. The second motor 84 drives the second driving roller 81 to rotate, and the second conveyor belt 83 is tensioned and drives the second driven roller 82 to rotate.

[0049] Further, the lower pressure roller 9 is located between the first driving roller 71 and the first driven roller 72, and the lower pressure roller 9 is located on the inner side of the first conveyor belt 73 and in contact with the first conveyor belt 73. The upper pressure roller 9 is located between the second driving roller 81 and the second driven roller 82, and the upper pressure roller 9 is located on the inner side of the second conveyor belt 83 and in contact with the second conveyor belt 83.

[0050] Preferably, in the embodiment, the first conveyor belt 73 and the second conveyor belt 83 form an angle, more preferably, the angle between the first conveyor belt 73 and the second conveyor belt 83 is 5-20°, so that the gap between the first conveyor belt 73 and the second conveyor belt 83 gradually decreases along the feeding direction of the material; when the material is pressed, the piston rod 22 provides a downward pressure to the second roller seat 4 so that the upper roller 9 is pressed down, and the lower roller 9 provides support when the upper roller 9 is pressed down, and the material is fully compacted during movement.

[0051] Preferably, in the embodiment, the first conveyor belt 73 and the second conveyor belt 83 are both steel belts.

[0052] It should be noted that in some other embodiments, the first conveyor belt 73 and the second conveyor belt 83 can also be arranged parallel to each other.

[0053] Further, in the embodiment, the piston rod 22 is detachably connected to the second roller seat 4; when the piston rod 22 is detached from the second roller seat 4, the piston rod 22 is retracted into the first roller seat 3, so that the space between the two rollers 9 can be left for replacement of parts, so as to facilitate replacement of parts and routine maintenance, for example, to facilitate maintenance and replacement of the first conveyor belt 73 and the second conveyor belt 83.

[0054] More preferably, in the embodiment, the horizontal plane where the opening of the cylinder 22 for mounting the piston rod 21 is located is lower than the horizontal plane where the highest point of the first roller seat 3 is located, so that when the piston rod 21 is retracted into the cylinder 21, it will be completely hidden in the first roller seat 3, thereby providing more space for replacement of parts. Of course, in some other embodiments, the horizontal plane where the opening of the cylinder 22 is located can also be higher than or equal to the horizontal plane where the highest point of the first roller seat 3 is located, which is not specifically limited here.

[0055] Please refer to Figure 2 and Figure 3Specifically, in the embodiment, the pressure roller pressurizing structure further comprises a locking piece 5 arranged on the second pressure roller seat 4, and the locking piece 5 is used to realize detachable connection between the piston rod 22 and the second pressure roller seat 4. More specifically, the locking piece 5 comprises a locking screw 53, a first locking block 51 and a second locking block 52, and the first locking block 51 and the second locking block 52 are detachably connected through the locking screw 53. In this way, on the one hand, the first locking block 51 and the second locking block 52 can clamp and fix the piston rod 22; on the other hand, the installation and disassembly of the split locking piece 5 are relatively convenient. When the first conveying belt 73 or the second conveying belt needs to be replaced, one of the first locking block 51 and the second locking block 52 is disassembled by loosening the locking screw 53, or the gap between the first locking block 51 and the second locking block 52 is enlarged by loosening the locking screw 53, so that the piston rod 22 and the second pressure roller seat 4 are separated, which is labor-saving and convenient. It should be understood that in some other embodiments, the detachable connection between the piston rod 22 and the second pressure roller seat 4 can also be but not limited to clamping or screwing, as long as it can release the locking between the piston rod 22 and the second pressure roller seat 4, which is not limited herein.

[0056] Preferably, in the embodiment, two first pressure roller seats 3 are arranged, and two second pressure roller seats 4 are arranged. The two first pressure roller seats 3 and the two second pressure roller seats 4 are arranged one by one. The two first pressure roller seats 3 are arranged at the two ends of the lower pressure roller 9 respectively, and the two second pressure roller seats 4 are arranged at the two ends of the upper pressure roller 9 respectively. In this way, on the one hand, the first pressure roller seat 3 and the second pressure roller seat 4 do not occupy the material extrusion space of the two pressure rollers 9, and can better support the two pressure rollers 9, so that the stress of the two pressure rollers 9 is more balanced, thereby improving the working efficiency and stability of the two pressure rollers 9 in extruding materials. On the other hand, it is convenient for installation and maintenance of the pressure roller pressurizing structure.

[0057] It is true that in some other embodiments, the number of first pressure roller seats 3 can be but not limited to 1, 3, 4, etc., and the number of second pressure roller seats 4 can be but not limited to 1, 3, 4, etc. corresponding to the first pressure roller seat 3. The first pressure roller seat 3 and the second pressure roller seat 4 can also be arranged at other positions of the pressure roller 9, which is not limited herein.

[0058] Preferably, in the embodiment, each first pressure roller seat 3 is provided with two pressing cylinders 2, and each end of the lower pressure roller 9 is provided with a first pressure roller seat 3, and each end of the upper pressure roller 9 is provided with a second pressure roller seat 4, that is, the total number of pressing cylinders 2 is 4, thereby improving the control efficiency and control range of the pressurizing pressure between the two pressure rollers 9.

[0059] It should be noted that in some other embodiments, the number of pressing cylinders 2 arranged on each first pressure roller seat 3 can be but not limited to 1, 3, 4, etc.

[0060] Please refer to Figure 2 and Figure 4 Further, in the embodiment, the pressing roller pressing structure further comprises a thickness adjusting mechanism 6, which can adjust the relative distance between the first pressing roller seat 3 and the second pressing roller seat 4, so as to adjust the forming thickness of the green brick between the two pressing rollers 9.

[0061] For example, the thickness adjusting mechanism 6 can be, but is not limited to, a telescopic rod module, a screw nut module, etc.

[0062] Specifically, in the embodiment, the thickness adjusting mechanism 6 comprises a nut 61, a lifting screw rod 62 and a driving device 63; the nut 61 is fixedly arranged on the first pressing roller seat 3, the lifting screw rod 62 is screwed on the nut 61 and is sleeved on the piston rod 22, and when the lifting screw rod 62 rotates, it will be lifted relative to the nut 61 due to the threaded connection between the lifting screw rod 62 and the nut 61, at this time, the lifting screw rod 62 can abut against the second pressing roller seat 4, or the lifting screw rod 62 can drive the piston rod 22 to move, so as to adjust the relative distance between the first pressing roller seat 3 and the second pressing roller seat 4.

[0063] It can be understood that in some other embodiments, the lifting screw rod 62 can also not be sleeved on the piston rod 22, and the end thereof away from the nut 61 can abut against the second pressing roller seat 4.

[0064] Preferably, in the embodiment, the driving device 63 can automatically drive the lifting screw rod 62 to rotate, so that the lifting screw rod 62 is lifted relative to the nut 61 due to the threaded connection between the lifting screw rod 62 and the nut 61, thereby adjusting the distance between the first pressing roller seat 3 and the second pressing roller seat 4.

[0065] It should be noted that in some other embodiments, the lifting screw rod 62 can also be driven in a manual manner.

[0066] Embodiment two

[0067] Please refer to Figure 5 The difference between the embodiment and the embodiment one is that the first pressing roller seat 3 is arranged above the pressing roller 9 of the rack, the second pressing roller seat 4 is arranged below the pressing roller 9 of the rack, correspondingly, the first pressing roller seat 3 and the cylinder body 21 are located above the rack, the second pressing roller seat 4 is located below the rack, and the piston rod 22 penetrates through the first pressing roller seat 3 and is connected with the second pressing roller seat 4. At this time, it is equivalent to that the pressing cylinder 2 provides a downward pressure for the pressing roller 9 above to process the material.

[0068] In summary, the pressing roller pressing structure and the roller press 1 disclosed by the present application can at least bring the following beneficial effects:

[0069] 1) When the pressing cylinder 2 is pressurized, the pressurizing pressure is transmitted between the first pressure roller seat 3, the second pressure roller seat 4 and the two pressure rollers 9, and the pressurizing pressure is not directly transmitted to the frame, thereby reducing the requirement on the frame, and the processing difficulty and cost of the frame are reduced; the frame does not adopt an integrated process, and the requirement on the structural strength is met, and the assembly of the pressure roller 9 is more convenient.

[0070] 2) By setting the first pressure roller seat 3 and the second pressure roller seat 4 to bear the pressurizing pressure of the pressing cylinder 2, the pressure fluctuation between the two pressure rollers 9 is reduced, thereby improving the stability and working efficiency of the roller press 1;

[0071] 3) The installation and dismounting of the split type locking part 5 are relatively convenient, after the locking part 5 is dismounted, the piston rod 22 can be retracted into the cylinder body 21, and the space between the two pressure rollers 9 can be emptied to replace the first conveying belt 73 and the second conveying belt 83, and the operation is labor-saving and convenient;

[0072] 4) The relative distance between the first pressure roller seat 3 and the second pressure roller seat 4 can be adjusted through the thickness adjusting mechanism 6, thereby the forming thickness of the brick body between the two pressure rollers 9 can be adjusted.

[0073] The technical means disclosed in the scheme of the present application is not only limited to the technical means disclosed in the above-mentioned embodiments, but also includes the technical scheme composed of any combination of the above technical features. It should be pointed out that, for ordinary skilled in the art, without departing from the principle of the present application, a number of improvements and refinements can be made, and these improvements and refinements are also considered as the protection scope of the present application.

Claims

1. A pressure roller pressing structure, applied to a roller press (1), the roller press (1) having a frame, characterized in that, The pressure roller pressing structure includes: Two pressure rollers (9) are disposed opposite to each other on the frame, and at least one of the two pressure rollers (9) is slidably disposed relative to the frame; A first pressure roller seat (3) and a second pressure roller seat (4) are arranged opposite to each other, wherein the first pressure roller seat (3) is disposed on one of the two pressure rollers (9) and the second pressure roller seat (4) is disposed on the other of the two pressure rollers (9); A pressing cylinder (2) includes a cylinder body (21) and a piston rod (22). The cylinder body (21) is disposed on the first pressing roller seat (3). The piston rod (22) is slidably disposed on the cylinder body (21). The piston rod (22) extends out of the cylinder body (21) and is connected to the second pressing roller seat (4) to adjust the relative gap between the two pressing rollers (9) and to provide the pressing pressure of the two pressing rollers (9). The pressure roller pressing structure also includes a thickness adjustment mechanism (6), which can adjust the relative distance between the first pressure roller seat (3) and the second pressure roller seat (4); The thickness adjustment mechanism (6) includes a nut (61) and a lifting screw (62), the lifting screw (62) being sleeved on the piston rod (22); The nut (61) is disposed on the first pressure roller seat (3), and the lifting screw (62) is connected to the second pressure roller seat (4) and screwed to the nut (61); or the nut (61) is disposed on the second pressure roller seat (4), and the lifting screw (62) is connected to the first pressure roller seat (3) and screwed to the nut (61).

2. The pressure roller pressing structure according to claim 1, characterized in that, The cylinder (21) is at least partially embedded in the first pressure roller seat (3), and the piston rod (22) extends out of the first pressure roller seat (3) to connect to the second pressure roller seat (4).

3. The pressure roller pressing structure according to claim 2, characterized in that, The piston rod (22) is detachably connected to the second pressure roller seat (4); When the piston rod (22) is disassembled from the second pressure roller seat (4), the piston rod (22) retracts into the first pressure roller seat (3) to form a space for component replacement.

4. The pressure roller pressing structure according to claim 3, characterized in that, The pressure roller pressing structure also includes a locking member (5) disposed on the second pressure roller seat (4). The piston rod (22) is detachably connected to the second pressure roller seat (4) through the locking member (5). The locking member (5) includes a first locking block (51) and a second locking block (52). The first locking block (51) and the second locking block (52) are detachably connected. The first locking block (51) and the second locking block (52) form a clamping and fixing of the piston rod (22).

5. The pressure roller pressing structure according to claim 1, characterized in that, The first pressure roller seat (3) and the second pressure roller seat (4) are respectively disposed at the ends of the two pressure rollers (9).

6. The pressure roller pressing structure according to claim 1, characterized in that, At least two first pressure roller seats (3) and at least two second pressure roller seats (4) are provided; At least two first pressure roller seats (3) are respectively disposed on both sides of one of the pressure rollers (9); At least two second pressure roller seats (4) are respectively disposed on both sides of another pressure roller (9).

7. The pressure roller pressing structure according to claim 1, characterized in that, The thickness adjustment mechanism (6) further includes a drive device (63), which drives the lifting screw (62) to rotate and lift.

8. A roller press (1), characterized in that, It includes a frame and a pressure roller pressing structure as described in any one of claims 1 to 7.

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