Roller press feeding device capable of correcting deviation

Abstract

The utility model discloses a roller press feeding device capable of rectifying deviation, and relates to the technical field of roller press feeding devices. Comprising a feeding pipe installed in a main frame, and openings are formed in the two sides of the feeding pipe; two flow regulating valve plate assemblies are arranged at the position, close to the opening of the movable roller, of the feeding pipe, one flow regulating valve plate assembly is located on the driving side of the movable roller, the other flow regulating valve plate assembly is located on the non-driving side of the movable roller, and at least one flow regulating valve plate assembly is arranged at the position, close to the opening of the fixed roller, of the feeding pipe; the flow adjusting valve plate assembly is connected with a flow adjusting driving mechanism through a valve plate movement restraining mechanism, and the size of a feeding opening of a feeding opening is adjusted through movement of the flow adjusting valve plate assembly. According to the utility model, the size of the working roll gap and the working current of the two rolls can be adjusted by giving different feeding openings to the driving side and the non-driving side of the movable roll or the fixed roll, and the roll gap and current deviation can be corrected.

Description

Technical Field

[0001] The utility model relates to the technical field of roller press feeding devices, in particular to a deviation-correcting roller press feeding device. Background Art

[0002] The roller press feeding device is a universal roller press feeding and sorting device, which is used in roller grinding system. It uses electric threaded push rod (or electro-hydraulic push rod) to drive the flow regulating valve plate to control the size of the material flow channel to achieve the purpose of the roller press feeding amount.

[0003] However, the existing roller press feeding devices all adopt a structural design in which a feed regulating valve plate is provided on both the movable roller side and the fixed roller side. When the roller press feeds unevenly, the driving side and the non-driving side in the roller width direction will have a large working roller gap deviation due to uneven force, causing the movable roller to tilt. In order to correct the roller gap deviation, some roller presses use different cylinder pressures on the driving side and the non-driving side of the movable roller, which will cause a large deviation in the cylinder pressure on both sides. Uneven feeding can also cause a large deviation in the working current of the driving motors of the movable roller and the fixed roller in some roller presses. The above-mentioned unbalanced loading phenomenon is referred to as unbalanced roller gap, unbalanced pressure, and unbalanced current. The unbalanced loading phenomenon is often accompanied by large vibrations and shocks. It is the main reason for the low efficiency of the crushing and grinding work of the roller press, the short life of the main bearing, and the frequent damage of the main reducer.

[0004] Based on this, a roller press feeding device is now provided which can correct roller gap deviation, pressure deviation and current deviation. Utility Model Content

[0005] The utility model is to solve the above technical problems and provide a roller press feeding device with correctable deviation, which can adjust the size of the working roller gap and the working current of the two rollers by granting different feeding openings to the driving side and non-driving side of the movable roller or the fixed roller, and correct the roller gap and current deviation to achieve the purpose of balancing the working roller gap, cylinder working pressure and working current of the two rollers on both sides of the roller press.

[0006] The utility model is achieved through the following technical solutions:

[0007] A roller press feeding device capable of correcting deviation is arranged above a movable roller and a fixed roller, comprising:

[0008] A feeding pipe is installed in the main frame, and has openings on both sides of the feeding pipe;

[0009] Multiple flow regulating valve plate assemblies, wherein two flow regulating valve plate assemblies are provided at the opening of the feeding pipe close to the movable roller, one of the two flow regulating valve plate assemblies is located on the driving side of the movable roller, and the other is located on the non-driving side of the movable roller, and at least one flow regulating valve plate assembly is provided at the opening of the feeding pipe close to the fixed roller;

[0010] The flow regulating valve plate assembly is connected to the flow regulating driving mechanism via a valve plate motion restraining mechanism, and the feed opening size of the feed port is adjusted by the movement of the flow regulating valve plate assembly.

[0011] Furthermore, the flow regulating valve plate assembly includes a valve plate body and a guide rod. A slide rail is provided on the back of the valve plate body, and the slide rail is connected to the main frame through a guide mechanism.

[0012] Furthermore, the guide mechanism includes a guide rod and a guide rod support, the guide rod is fixed to the main frame through the guide rod support, and both ends of the guide rod are movably connected in the slide rail.

[0013] Furthermore, the valve plate motion restraining mechanism includes a rocker arm and a rocker arm support, the rocker arm is hinged to the valve plate body, and the rocker arm is hinged to the rocker arm support, and the rocker arm support is fixed to the main frame.

[0014] Furthermore, the flow regulating drive mechanism includes a telescopic pushing device and a pushing device support, the telescopic pushing device is fixed to the main frame through the pushing device support, and the output end of the telescopic pushing device is hinged to the rocker arm.

[0015] Furthermore, the retractable pushing device is any one of an electric threaded push rod, an electro-hydraulic push rod, and a hydraulic cylinder.

[0016] Furthermore, one or two flow regulating valve plate assemblies are provided at the opening of the feeding pipe close to the fixed roller.

[0017] Furthermore, follower valve plates are provided at the openings on both sides of the feeding pipe, and the follower valve plates are hinged to the feeding pipe.

[0018] Furthermore, the number of the follower valve plates matches the number of the flow regulating valve plate assemblies, and the follower valve plates are located inside the flow regulating valve plate assemblies.

[0019] Furthermore, the main frame is connected with side baffles at positions close to both end surfaces of the movable roller and the fixed roller.

[0020] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0021] 1. The feeding device of the utility model realizes roller gap correction by granting different opening degrees to the two flow regulating valve plates on the same side and utilizing the dynamic characteristics of material flow. It does not need to sacrifice the working pressure of the oil cylinder on the side with smaller roller gap, thus significantly improving the roller crushing and grinding efficiency of the roller press.

[0022] 2. The feeding device of the present invention adjusts the opening of the two flow regulating valve plates on both sides, thereby adjusting the current size of the fixed roller and the movable roller, thereby correcting the current deviation.

[0023] 3. After using the feeding device of the utility model, there is basically no need to adjust the oil cylinder pressure on both sides of the movable roller to correct the deviation. The oil cylinder pressure on both sides can be kept balanced, which fundamentally solves the problems of uneven load such as uneven roller gap, uneven pressure, and uneven current of the roller press. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the accompanying drawings:

[0025] Figure 1 This is a schematic diagram of the overall structure of the device of Example 1 of the present utility model;

[0026] Figure 2 This is a front view of the device of Example 1 of the present utility model after removing the main frame;

[0027] Figure 3 This is a schematic diagram of the three-dimensional structure of the device of Example 1 of the present utility model after removing the main frame;

[0028] Figure 4 Schematic diagram of the connection structure between the flow regulating valve plate assembly and the flow regulating drive mechanism;

[0029] Figure 5 It is a structural diagram of the flow regulating valve plate assembly;

[0030] Figure 6 Schematic diagram of the structure of the feeding tube;

[0031] Figure 7 This is a schematic diagram of the three-dimensional structure of the device of Example 2 of the utility model after removing the main frame.

[0032] Markings and corresponding parts names in the accompanying drawings:

[0033] 1-main frame, 2-feeding pipe, 3-movable roller, 4-fixed roller, 5-flow regulating drive mechanism, 501-retractable pushing device, 502-pushing device support, 6-valve plate motion constraint mechanism, 601-rocker arm, 602-rocker arm support, 7-flow regulating valve plate assembly, 701-valve plate body, 702-slide rail, 703-guide rod, 704-guide rod support, 8-follow-up valve plate, 9-side baffle. DETAILED DESCRIPTION

[0034] 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 embodiments and drawings. The schematic implementation methods of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0035] In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention. However, it will be apparent to one skilled in the art that these specific details are not necessarily required to practice the present invention. In other embodiments, well-known structures, circuits, materials, or methods are not described in detail to avoid obscuring the present invention.

[0036] Throughout this specification, references to "one embodiment," "an embodiment," "an example," or "an example" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment or example is included in at least one embodiment of the present invention. Therefore, the phrases "one embodiment," "an embodiment," "an example," or "an example" appearing in various places throughout this specification do not necessarily refer to the same embodiment or example. In addition, the particular features, structures, or characteristics may be combined in one or more embodiments or examples in any suitable combination and / or subcombination. Furthermore, it will be understood by those of ordinary skill in the art that the figures provided herein are for illustrative purposes only and are not necessarily drawn to scale. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0037] In the description of the present invention, the indicated orientation or position relationship is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the product of the application is usually placed when in use, or is the orientation or position relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0038] At the same time, the terms "dispose," "assemble," "connect," and "connect" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediary, or internal connections between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention.

[0039] Example 1

[0040] like Figures 1-6As shown, this embodiment provides a roller press feeding device that can correct deviation, which is arranged above the movable roller 3 and the fixed roller 4, and includes a main frame 1, a feeding pipe 2, three flow regulating valve plate assemblies 7, a valve plate motion restraint mechanism 6 and a flow regulating drive mechanism 5.

[0041] The feeding pipe 2 is installed in the main frame 1. The main frame 1 is a frame structure connected on all sides. The upper and lower ends of the main frame 1 are open ends. Flanges are provided around the opening on the upper part of the main frame 1 to facilitate the installation of the feeding pipe 2. The feeding pipe 2 has openings on both sides.

[0042] Two flow regulating valve plate assemblies 7 are provided at the opening of the feeding pipe 2 near the movable roller 3. One of the two flow regulating valve plate assemblies 7 is located on the driving side of the movable roller 3 and the other is located on the non-driving side of the movable roller 3. One flow regulating valve plate assembly 7 is provided at the opening of the feeding pipe 2 near the fixed roller 4.

[0043] The flow regulating valve plate assembly 7 is connected to the flow regulating driving mechanism 5 through the valve plate movement constraint mechanism 6, and the feed opening size of the feed port is adjusted by the movement of the flow regulating valve plate assembly 7;

[0044] The function of the flow regulating valve plate assembly 7 is to adjust the position of the flow regulating valve plate assembly 7 by using the power provided by the flow regulating drive mechanism 5 and the valve plate motion constraint mechanism 6, thereby adjusting the feed opening size of the feeding pipe 2. The flow regulating valve plate assemblies 7 in the utility model are all independently adjustable.

[0045] The working principle of this utility model is:

[0046] When uneven material feeding causes the gap between the drive side and the non-drive side of movable roller 3 to be significantly larger than that between the drive side and the non-drive side, the flow control valve plate assembly 7 on the drive side is adjusted to reduce the feed opening, while the flow control valve plate assembly 7 on the non-drive side is adjusted to increase the feed opening. On the one hand, the increased feed throttling effect increases the feed resistance on the drive side, while the contact area between the drive side roller and the material decreases, significantly reducing the amount of material drawn into the drive side, thus reducing the roll gap on the drive side. On the other hand, the reduced feed throttling effect reduces the feed resistance on the non-drive side, while the contact area between the non-drive side roller and the material increases, significantly increasing the amount of material drawn into the non-drive side, thus increasing the roll gap on the non-drive side. By increasing and decreasing the roll gap on both sides, roll gap deviation is corrected.

[0047] When the roll gap on the non-driving side of the movable roller 3 is larger than the roll gap on the driving side, the same method as above can be used to correct the deviation. Specifically, the flow regulating valve plate assembly 7 on the driving side is adjusted to increase the feed opening, and the flow regulating valve plate assembly 7 on the non-driving side is adjusted to reduce the feed opening.

[0048] The feeding device of the utility model grants different openings to the two feeding valve plates on the same side and utilizes the dynamic characteristics of material flow to realize roller gap correction. There is no need to sacrifice the working pressure of the oil cylinder on the side with a smaller roller gap, thereby significantly improving the roller crushing and grinding efficiency of the roller press.

[0049] When the operating current of the main motor of the movable roll 3 of the roller press deviates significantly from that of the main motor of the fixed roll 4, the current deviation can be corrected by adjusting the feed regulating valve plates on the movable roll 3 and fixed roll 4 sides. For example, when the current of the movable roll 3 is significantly greater than that of the fixed roll 4, the opening of the flow regulating valve plate assembly 7 on the fixed roll 4 side can be increased to increase the current of the fixed roll 4, or the opening of the flow regulating valve plate assembly 7 on the movable roll 3 side can be decreased to reduce the current of the movable roll 3 and achieve current balance between the two rolls. Of course, if the operating current of the main motor of the movable roll 3 or fixed roll 4 of the roller press is already very high, the reverse operation can be performed to reduce the current on the higher side to balance towards a slightly lower current.

[0050] After using the device of the utility model, there is basically no need to adjust the oil cylinder pressure on both sides of the movable roller 3 to correct the deviation. The oil cylinder pressure on both sides can be kept balanced. This fundamentally solves the problems of uneven load such as uneven roller gap, uneven pressure, and uneven current in the roller press.

[0051] In one or more specific examples, the flow regulating valve plate assembly 7 includes a valve plate body 701 and a guide rod 703. A slide rail 702 is provided on the back of the valve plate body 701. The slide rail 702 is connected to the main frame 1 via a guide mechanism. The guide mechanism includes a guide rod 703 and a rocking guide rod support 704. The guide rod 703 is fixed to the main frame 1 via the rocking guide rod support 704. Both ends of the guide rod 703 are movably connected within the slide rail 702.

[0052] The valve plate motion restraining mechanism 6 includes a rocker arm 601 and a rocker arm support 602. The rocker arm 601 is hinged to the valve plate body 701 and hinged to the rocker arm support 602. The rocker arm 601 is fixed to the main frame 1. As is known from common sense in mechanical design, the rocker arm slide mechanism can also be replaced with a rocker arm roller mechanism, a double slide mechanism, or a four-bar linkage to achieve similar motion restraint of the flow control valve plate assembly 7. A rocker arm slide mechanism is preferred.

[0053] The flow regulating drive mechanism 5 includes a retractable pusher 501 and a pusher support 502. The retractable pusher is fixed to the main frame 1 via the pusher support 502, and the output end of the retractable pusher is hinged to the rocker arm 601. Specifically, the retractable pusher 501 is any one of an electric threaded pusher, an electro-hydraulic pusher, and a hydraulic cylinder, preferably an electric threaded pusher.

[0054] During operation, when the working roll gap on the driven side of movable roller 3 is significantly larger than that on the non-driven side, the deviation correction process is triggered. First, the output end of the telescopic pusher on the driven side of movable roller 3 extends, pushing the rocker arm 601 to rotate clockwise, driving the valve plate body 701 on the driven side downward along the slide rail 702. This reduces the size of the feed opening of feeding pipe 2. The flow rate of material on the driven side decreases due to the enhanced throttling effect and the reduced roll surface area, thus reducing the working roll gap opened by the material. Furthermore, because the extrusion area of ​​the driven side roll surface on the material decreases, the local pressure increases, the crushing capacity is enhanced, and the grinding efficiency is improved. Simultaneously, the output end of the telescopic pusher on the non-driven side of movable roller 3 shortens, pushing the rocker arm 601 to rotate counterclockwise, driving the valve plate body 701 on the non-driven side upward along the slide rail 702, increasing the size of the feed opening. The flow rate of material on the non-driven side increases due to the reduced throttling effect and the increased roll surface area, thus widening the working roll gap opened by the material. This operation simply adjusts the feed mechanism to reduce the gap between the drive side rollers and increase the gap between the non-drive side rollers, effectively correcting gap deviations and improving the crushing and grinding efficiency of the roller press when the feed is uneven. When the gap between the non-drive side rollers of the movable roller 3 is larger than the gap between the drive side rollers, the adjustment method is similar.

[0055] In one or more specific examples, follower valve plates 8 are further provided at the openings on both sides of the feeding tube 2, and the follower valve plates 8 are hinged to the feeding tube 2. The follower valve plates 8 are hinged to the two side walls of the feeding tube 2 that are not open, and can move along with the fed material, and can adapt to changes in the material feed amount. Specifically, the number of the follower valve plates 8 matches the number of the flow regulating valve plate assemblies 7, and the follower valve plates 8 are located on the inner side of the flow regulating valve plate assembly 7. For example, if two flow regulating valve plate assemblies 7 are provided at the opening of the feeding tube 2 near the movable roller 3, then two follower valve plates 8 are provided at the same time; if one flow regulating valve plate assembly 7 is provided at the opening of the feeding tube 2 near the fixed roller 4, then one follower valve plate 8 is provided at the same time.

[0056] In one or more specific examples, the main frame 1 is connected with side baffles 9 near the two end surfaces of the movable roller 3 and the fixed roller 4. The side baffles 9 can prevent material leakage from the two end surfaces of the roller press.

[0057] Example 2

[0058] This embodiment further illustrates the technical solution of the present utility model based on the embodiment 1.

[0059] like Figure 7 As shown, the difference between this embodiment and embodiment 1 is that two flow regulating valve plate assemblies 7 are set at the opening of the feeding pipe 2 near the fixed roller 4. At this time, the number of flow regulating valve plate assemblies 7 is the same as that on the side of the movable roller 3, that is, they are symmetrically arranged on both sides to form a double-sided four-valve plate structure.

[0060] In production practice, the flow regulating valve plates on the driving side and non-driving side of the fixed roller 4 can also grant different feed openings, and cooperate with the movable roller 3 to achieve correction adjustment. In this double-sided four-valve plate solution, the double valve plates on the fixed roller 4 side can also have different openings during correction adjustment, which makes the correction operation more flexible and more adaptable to materials.

[0061] Finally, it should be noted that the above specific embodiments are only used to explain in detail the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above is only a specific implementation method of the present invention and is not used to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above specific embodiments, ordinary technicians in this field should understand that it is still possible to modify the technical solutions described in the above embodiments, or to replace or improve some or all of the technical features therein. These modifications, equivalent replacements, and improvements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered by the scope of the claims and description of the present invention.

Claims

1. A roller press feeding device capable of correcting deviation, arranged above a movable roller (3) and a fixed roller (4), characterized in that: include: A feeding pipe (2) is installed in the main frame (1), and the feeding pipe (2) has openings on both sides; A plurality of flow regulating valve plate assemblies (7), wherein two flow regulating valve plate assemblies (7) are provided at the opening of the feeding pipe (2) close to the movable roller (3), one of the two flow regulating valve plate assemblies (7) is located on the driving side of the movable roller (3), and the other is located on the non-driving side of the movable roller (3), and at least one flow regulating valve plate assembly (7) is provided at the opening of the feeding pipe (2) close to the fixed roller (4); The flow regulating valve plate assembly (7) is connected to the flow regulating driving mechanism (5) via a valve plate motion restraining mechanism (6), and the feed opening size of the feed port is adjusted by the movement of the flow regulating valve plate assembly (7).

2. A roller press feeding device capable of correcting deviation according to claim 1, characterized in that: The flow regulating valve plate assembly (7) comprises a valve plate body (701) and a guide rod (703). A slide rail (702) is provided on the back of the valve plate body (701). The slide rail (702) is connected to the main frame (1) via a guide mechanism.

3. The roller press feeding device capable of correcting deviation according to claim 2, characterized in that: The guide mechanism comprises a guide rod (703) and a guide rod support (704); the guide rod (703) is fixed to the main frame (1) via the guide rod support (704); and both ends of the guide rod (703) are movably connected in the slide rail (702).

4. The feed device for a roller press capable of correcting deviation according to claim 2, characterized in that: The valve plate motion restraining mechanism (6) comprises a rocker arm (601) and a rocker arm support (602), wherein the rocker arm (601) is hinged to the valve plate body (701), and the rocker arm (601) is hinged to the rocker arm support (602), and the rocker arm support (602) is fixed to the main frame (1).

5. The feed device for a roller press capable of correcting deviation according to claim 4, characterized in that: The flow regulating drive mechanism (5) comprises a telescopic pushing device (501) and a pushing device support (502); the telescopic pushing device is fixed to the main frame (1) via the pushing device support (502); and the output end of the telescopic pushing device is hinged to the rocker arm (601).

6. The deviation-correctable roller press feeding device according to claim 5, characterized in that: The telescopic pushing device (501) is any one of an electric threaded push rod, an electro-hydraulic push rod, and a hydraulic cylinder.

7. The deviation-correctable roller press feeding device according to claim 1, characterized in that: One or two flow regulating valve plate assemblies (7) are arranged at the opening of the feeding pipe (2) close to the fixed roller (4).

8. A deviation-correctable roller press feeding device according to any one of claims 1 to 7, characterized in that: Follower valve plates (8) are also provided at the openings on both sides of the feeding pipe (2), and the follower valve plates (8) are hinged to the feeding pipe (2).

9. The deviation-correctable roller press feeding device according to claim 8, characterized in that: The number of the follower valve plates (8) matches the number of the flow regulating valve plate assemblies (7), and the follower valve plates (8) are located inside the flow regulating valve plate assemblies (7).

10. The deviation-correctable roller press feeding device according to claim 8, characterized in that: The main frame (1) is connected with side baffles (9) at positions close to the end surfaces of the movable roller (3) and the fixed roller (4).

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