Pull plate reversing clutch and cantilever structure plate-and-frame filter press

Abstract

The utility model relates to a pulling plate reversing clutch and a cantilever structure plate-and-frame filter press, the pulling plate reversing clutch comprises a clutch transmission shaft of an integrated structure, and the clutch transmission shaft is connected with a transmission chain wheel, a driven disc and a driving disc; ball bearings are respectively arranged between the transmission chain wheel and the clutch transmission shaft and between the driven disc and the clutch transmission shaft, and the outer end of the clutch transmission shaft is connected with a positioning bearing. According to the utility model, the service life of the reversing clutch can be prolonged according to the special requirement of the cantilever structure plate-and-frame filter press on the movement of the filter plate.

Description

Technical Field

[0001] The present application relates to the field of clutch technology, and in particular to a pull-plate reversing clutch and a cantilevered beam structure plate-frame filter press. Background Art

[0002] The filter plate moving system of the cantilever structure plate and frame filter press consists of an electric motor, a reducer, a reversing clutch, a plate pulling manipulator and a chain sprocket assembly. The reversing clutch is installed on the output shaft of the reducer, and the drive sprocket is fixed on the clutch. The drive sprocket drives the plate pulling manipulator installed on the chain to move the filter plates one by one from the closed position to the open position, thereby completing the plate opening and mud unloading process of the filter press.

[0003] The movement of the filter plate can be decomposed into: the plate pulling robot moves forward to the filter plate closing position, the plate pulling robot hooks the filter plate, the plate pulling robot changes direction to move the filter plate to the filter plate opening position, and the plate pulling robot changes direction to move the next filter plate.

[0004] The reversing clutch transmits the required torque when moving the filter plate. When the plate pulling robot hooks the filter plate, the clutch is overloaded and its active plate moves outward, giving the motor a reversing plate pulling signal. After the filter plate is moved into place, the clutch is overloaded again and its active plate moves outward, giving the motor a reversing plate taking signal.

[0005] Each time a filter plate is moved, the clutch has two overload-induced outward movement and reset actions of the active plate. According to the usage of conventional filter presses, there will be hundreds or even thousands of overload actions every working day. The reliability and service life of the reversing clutch are very important.

[0006] Existing cantilever plate-and-frame filter presses all use a standard torque limiter as the reversing clutch for filter plate movement. While the torque limiter's primary function is overload protection, the number of overloads allowed is significantly insufficient for a filter press, resulting in a stable service life of only about one year. The reversing clutch is a consumable component, which has hindered the widespread adoption of advanced cantilever filter presses. Utility Model Content

[0007] The purpose of this application is to provide a pull plate reversing clutch that can extend the service life of the reversing clutch in response to the special requirements of a cantilever structure plate and frame filter press for filter plate movement.

[0008] In order to achieve the above-mentioned objectives, in the first aspect, the utility model provides a pull-plate reversing clutch, comprising a clutch transmission shaft of an integrated structure, a transmission sprocket, a driven plate and a driving plate being connected to the clutch transmission shaft, ball bearings are respectively arranged between the transmission sprocket and the clutch transmission shaft and between the driven plate and the clutch transmission shaft, and a locating bearing is connected to the outer end of the clutch transmission shaft.

[0009] In an optional embodiment, the ball bearing includes a sprocket ball bearing and a driven plate ball bearing, and the sprocket ball bearing and the driven plate ball bearing are arranged at intervals along the axial direction of the clutch transmission shaft, and the locating bearing includes a locating ball bearing connected to the outer end of the cantilever on the clutch transmission shaft.

[0010] In an optional embodiment, the clutch transmission shaft includes a spline shaft segment, the spline shaft segment is opposite to the driving disk, and the driving disk and the spline shaft segment are engaged through a plurality of spline transmissions.

[0011] In an optional embodiment, a transmission steel ball is arranged between the active disk and the driven disk, and the transmission steel balls include a plurality of balls arranged in the circumferential direction, and mounting grooves for accommodating the transmission steel balls are provided on the facing disk surfaces of the active disk and the driven disk.

[0012] In an optional embodiment, the active disk is connected to an oil storage assembly, the oil storage assembly includes an oil storage chamber and an oil sealing cover, the oil sealing cover is connected to the side of the active disk, so that the oil storage chamber can be arranged between the active disk and the oil sealing cover;

[0013] The oil sealing cover is provided with an oil filling port, and the oil filling port is communicated with the cavity of the oil storage chamber.

[0014] In an optional embodiment, a disc spring is provided on the side of the oil sealing cover facing away from the active disk, and the disc spring is in tight contact with the side end of the oil sealing cover. The active disk and the oil sealing cover can be elastically displaced along the axial direction of the clutch transmission shaft under the action of the disc spring.

[0015] In an optional embodiment, an inductive sensor is further included, which is arranged on the side of the oil sealing cover and the active disk to sense the displacement of the active disk and the oil sealing cover in a non-contact manner.

[0016] In an optional embodiment, the side end of the driven disc lies on the end face of the transmission sprocket, and the two are interference-fitted to form an integral structure.

[0017] In an optional embodiment, a locking nut is connected to the clutch transmission shaft, and the locking nut is located on the inner side of the locating bearing.

[0018] In a second aspect, the present invention further provides a cantilever structure plate-frame filter press, comprising a pull-plate reversing clutch in any one of the above-mentioned embodiments.

[0019] The integrated clutch transmission shaft, compared with the existing separate reducer output shaft and torque limiter shaft, can combine the two shafts into one, thereby ensuring the stability of the clutch transmission shaft's output torque, reducing failure links, and reducing precision loss.

[0020] By arranging ball bearings between the transmission sprocket and the clutch transmission shaft, and between the driven plate and the clutch transmission shaft, and connecting a locating bearing to the outer end of the clutch transmission shaft, the rotation accuracy of the clutch can be greatly improved.

[0021] The pull-plate reversing clutch in the utility model, on the one hand, mainly avoids the matching failure between the split shafts by combining the two clutch transmission shafts into one, and on the other hand, can ensure the linear extension of the entire transmission shaft through ball bearings and positioning bearings, thereby avoiding the deviation of the split shaft during operation to the greatest extent and ensuring the rotation accuracy of the clutch.

[0022] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 It is a structural schematic diagram of a pull plate reversing clutch of a cantilever beam structure plate and frame filter press in the prior art;

[0025] Figure 2 This is a structural schematic diagram of the pull plate reversing clutch of the cantilever structure plate and frame filter press in this application.

[0026] icon:

[0027] 1- reducer output shaft; 2- torque limiter shaft; 3- thrust needle roller bearing; 4- mechanical travel switch; 5- transmission sprocket; 6- driven plate; 7- driving plate; 8- transmission steel ball; 9- disc spring;

[0028] 10-clutch transmission shaft; 10a-spline shaft segment; 20-sprocket ball bearing; 30-driven plate ball bearing; 40-positioning ball bearing; 50-spline; 60-oil storage chamber; 70-oil sealing cap; 80-oil filling port; 90-inductive sensor; 100-locking nut. DETAILED DESCRIPTION

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0030] In the description of this application, it should be noted that the terms "inner" and "outer" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended solely to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" and the like are used solely for distinction and should not be construed as indicating or implying relative importance.

[0031] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0032] The pull-plate reversing clutch in this application is mainly used in cantilever structure plate and frame filter presses. By changing the structure of the existing clutch, the stability of the pull-plate reversing clutch operation is ensured, the rotation accuracy of the drive shaft is improved, and the axial deviation of the drive shaft is avoided, thereby increasing the service life of the pull-plate reversing clutch.

[0033] See also Figure 1 The structure of the pull plate reversing clutch of the cantilever structure plate frame filter press in the prior art is shown, and combined with Figure 2 The specific structure of the pull plate reversing clutch of the cantilever structure plate and frame filter press in this application is shown.

[0034] The pull-plate reversing clutch in this application mainly improves the structure of the clutch drive shaft itself, the bearing assembly between the drive shaft and the transmission member, the fixed bearing at the shaft end, the coordination between the drive shaft and the transmission member, and the different angles of the active plate displacement sensing. It focuses on the stable reliability of the output torque of the pull-plate reversing clutch drive shaft, the high level of rotational accuracy during the rotation of the drive shaft, and the convenience of maintenance and reduced wear.

[0035] Specifically, based on the improvement directions from the above-mentioned different angles, the pull-plate reversing clutch in the utility model includes an integrated clutch transmission shaft 10. Compared with the traditional split-connected reducer output shaft 1 and torque limiter shaft 2, the reducer output shaft 1 and the torque limiter shaft 2 are combined into one, thereby reducing the connection between the split shafts and avoiding the failure links in the connection parts.

[0036] At the same time, the single clutch transmission shaft 10 can output torque more stably and reliably, ensuring the rotation accuracy of the entire shaft from the basic structure and reducing the accuracy loss caused by the dual-shaft connection.

[0037] The clutch transmission shaft 10 is connected to the transmission sprocket 5, the driven plate 6 and the driving plate 7. The side end of the driven plate 6 lies on the end face of the transmission sprocket 5, and the two are interference fit as an integral structure. The driving plate 7 and the driven plate 6 are separate structures with clearance fit.

[0038] During operation, the clutch transmission shaft 10 drives the active disc 7 to rotate, and the transmission steel ball 8 between the active disc 7 and the driven disc 6 drives the driven disc 6 to rotate, and then the driven disc 6 drives the transmission sprocket 5 to rotate. When the plate pulling manipulator hooks the filter plate, the clutch is overloaded, and the driven disc 6 and the transmission gear are stuck in the overload state. Based on the transmission steel ball 8 between the active disc 7 and the driven disc 6, the active disc 7 moves elastically in the axial direction of the clutch transmission shaft 10.

[0039] In the existing pull-plate reversing clutch, the transmission shaft is positioned inside the clutch only by the thrust needle bearing 3 between the active plate 7 and the driven plate 6. In this application, a ball bearing is arranged between the transmission sprocket 5 and the clutch transmission shaft 10, and a ball bearing is arranged between the driven plate 6 and the clutch transmission shaft 10, and a locating bearing is arranged at the outer end of the clutch transmission shaft 10. This can greatly improve the rotation accuracy of the clutch and ensure the effective positioning of the entire clutch transmission shaft 10.

[0040] In one specific embodiment, the ball bearing includes a sprocket ball bearing 20 and a driven plate ball bearing 30, and the sprocket ball bearing 20 and the driven plate ball bearing 30 are arranged at intervals along the axial direction of the clutch transmission shaft 10, and the sprocket ball bearing 20 is arranged between the transmission sprocket 5 and the clutch transmission shaft 10, and the driven plate ball bearing 30 is arranged between the driven plate 6 and the clutch transmission shaft 10.

[0041] Through this arrangement, the driving sprocket 5 and the driven plate 6 can maintain a relatively fixed axial position relationship, so that when they are stuck, the clutch transmission shaft 10 can maintain effective rotation, which is beneficial to the outward movement of the active plate 7.

[0042] The locating bearing includes a locating ball bearing 40 connected to the outer end of the cantilever on the clutch transmission shaft 10, which can fix the outer end of the cantilever of the clutch transmission shaft 10, maintain the fixed linear state of the clutch transmission shaft 10, and utilize the stability of different transmission parts during rotation.

[0043] By setting bearings at different positions, the clutch transmission shaft 10 can maintain stable output torque. At the same time, the positioning effect of the bearings can greatly improve the rotation accuracy of the clutch transmission shaft 10, and at the same time, the axial deviation of the split connecting shaft section during operation can be avoided.

[0044] Furthermore, in order to further ensure the fixed state of the clutch transmission shaft 10 and reduce the risk of deviation, a locking nut 100 is connected to the clutch transmission shaft 10, and the locking nut 100 is located on the inner side of the positioning bearing along the circumference of the clutch transmission shaft 10.

[0045] Based on the overall shaft structure of the clutch transmission shaft 10 in this application, the clutch transmission shaft 10 includes a spline shaft segment 10a, which is opposite to the active disk 7, and a plurality of splines 50 are used for transmission between the active disk 7 and the spline shaft segment 10a.

[0046] The spline shaft segment 10a constitutes the moving guide section of the active disk 7. Compared with the existing two-body structure of the spline shaft, the spline shaft segment 10a eliminates structural hidden dangers and improves the service life of the spline shaft.

[0047] A plurality of transmission steel balls 8 are arranged between the active disk 7 and the driven disk 6. The transmission steel balls 8 can transmit torque between the active disk 7 and the driven disk 6 during normal operation. At the same time, based on the setting of the above-mentioned ball bearings, the active disk 7 can be passively moved outward relative to the driven disk 6 under overload conditions.

[0048] The transmission steel balls 8 include a plurality of balls arranged in the circumferential direction, which can transmit torque uniformly, and mounting grooves for accommodating the transmission steel balls 8 are provided on the facing disk surfaces of the active disk 7 and the driven disk 6, so that the transmission steel balls 8 can cooperate with the active disk 7 and the driven disk 6 at the same time.

[0049] In this embodiment, the active disc 7 is connected to an oil storage assembly, which includes an oil storage chamber 60 and an oil sealing cover 70. The oil sealing cover 70 is connected to the side of the active disc 7 to enable the oil storage chamber 60 to be set between the active disc 7 and the oil sealing cover 70, thereby giving the clutch a lubrication function and reducing wear between the transmission parts and between the transmission parts and the clutch transmission shaft 10.

[0050] The oil sealing cover 70 is provided with an oil filling port 80 , which is communicated with the cavity of the oil storage chamber 60 , and can be filled with lubricating oil to ensure the effective implementation of the lubrication function.

[0051] The oil sealing cover 70 in this embodiment is connected to the active disk 7 as an integral structure. A disc spring 9 is provided on the side of the oil sealing cover 70 away from the active disk 7. The disc spring 9 is in tight pressure contact with the side end of the oil sealing cover 70. When the plate pulling manipulator hooks the filter plate, the clutch is overloaded, and the driven disk 6 and the transmission gear are stuck in the overload state. Under the working condition, the active disk 7 and the oil sealing cover 70 can be elastically displaced along the axial direction of the clutch transmission shaft 10 under the action of the disc spring 9 and the squeezing action of the transmission steel balls.

[0052] When the active disk 7 performs axial elastic displacement, a reversing electrical signal element is required to identify and send a displacement signal to the PLC control module of the cantilever structure plate and frame filter press, so that the PLC control module triggers the interlock, gives the motor reversing pull plate signal, controls the drive unit to reverse, restores the return movement of the active disk 7, and performs normal transmission again after the return movement.

[0053] The existing reversing electrical signal element uses a contact-type mechanical travel switch 4. When the active disk 7 moves outward and contacts the mechanical travel switch 4, the interlock is triggered. However, as the active disk 7 follows the rotation of the clutch transmission shaft 10, rotational friction between the active disks 7 and 7 will be generated during contact, which on the one hand generates friction noise, and on the other hand causes wear of the active disk 7 during long-term operation.

[0054] In the present application, the commutation electrical signal element is set in the form of an inductive sensor 90, and the inductive sensor 90 is set on the side of the oil seal cover 70 and the active disk 7, so as to be able to sense the displacement of the active disk 7 and the oil seal cover 70 in a non-contact manner, especially to enable the inductive sensor 90 to sense the displacement of the active disk 7, thereby improving the signal sensitivity and component life, eliminating the noise generated by contact friction, and reducing the contact wear of the components.

[0055] The utility model also provides a cantilever structure plate-frame filter press including the pull-plate reversing clutch described above, which can ensure a stable operating state of the filter press.

[0056] The pull plate reversing clutch in the utility model allows overload times of more than 1 million times. For a filter press that runs 24 hours a day, its service life is more than 3 years. For a filter press that works at a normal frequency, its service life is more than 10 years, which greatly extends the service life of the reversing clutch.

[0057] It should be noted that, unless there is any conflict, the features in the embodiments of this application can be combined with each other.

[0058] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A pull plate reversing clutch, characterized in that: It includes a clutch transmission shaft with an integrated structure, on which a transmission sprocket, a driven plate and a driving plate are connected, ball bearings are respectively provided between the transmission sprocket and the clutch transmission shaft and between the driven plate and the clutch transmission shaft, and the outer end of the clutch transmission shaft is connected to a locating bearing.

2. The pull plate reversing clutch according to claim 1, characterized in that: The ball bearings include a sprocket ball bearing and a driven plate ball bearing, which are spaced apart along the axial direction of the clutch transmission shaft. The locating bearing includes a locating ball bearing connected to the outer end of the cantilever on the clutch transmission shaft.

3. The pull plate reversing clutch according to claim 1, characterized in that: The clutch transmission shaft includes a spline shaft segment, which is opposite to the driving disc, and the driving disc and the spline shaft segment are matched through a plurality of spline transmissions.

4. The pull plate reversing clutch according to claim 1, characterized in that: Transmission steel balls are arranged between the active disk and the driven disk. The transmission steel balls include a plurality of balls arranged in the circumferential direction, and mounting grooves for accommodating the transmission steel balls are arranged on the facing disk surfaces of the active disk and the driven disk.

5. The pull plate reversing clutch according to claim 1, characterized in that: The active disk is connected to an oil storage assembly, which includes an oil storage chamber and an oil sealing cover. The oil sealing cover is connected to the side of the active disk so as to set the oil storage chamber between the active disk and the oil sealing cover. The oil sealing cover is provided with an oil filling port, and the oil filling port is communicated with the cavity of the oil storage chamber.

6. The pull plate reversing clutch according to claim 5, characterized in that: A disc spring is provided on the side of the oil sealing cover away from the active disc, and the disc spring is in tight contact with the side end of the oil sealing cover. The active disc and the oil sealing cover can be elastically displaced along the axial direction of the clutch transmission shaft under the action of the disc spring.

7. The pull plate reversing clutch according to claim 5, characterized in that: It also includes an inductive sensor, which is arranged on the side of the oil sealing cover and the active disk, and is used to sense the displacement of the active disk and the oil sealing cover in a non-contact manner.

8. The pull plate reversing clutch according to claim 1, characterized in that: The side end of the driven disc lies on the end surface of the transmission sprocket, and the two are interference-fitted to form an integral structure.

9. The pull plate reversing clutch according to claim 1, characterized in that: The clutch transmission shaft is connected with a locking nut, and the locking nut is located on the inner side of the locating bearing.

10. A cantilever structure plate and frame filter press, characterized in that: The invention comprises the pull plate reversing clutch according to any one of claims 1 to 9.

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