A filter press opening and closing plate oil cylinder leveling device

Abstract

The utility model belongs to filter press technical field, concretely relates to a filter press opening and closing board oil cylinder leveling device, including the elastic reset frame of fixed connection in the one side of crossbeam, is installed the support plate on the elastic reset frame, the elastic reset frame is used for the end of support plate to exert the upward thrust, when the opening and closing board drive oil cylinder runs, exerts the thrust to the downside of opening and closing board drive oil cylinder through the end of support plate, the end of support plate is installed rotatable pin shaft no. 2, the outside of pin shaft no. 2 is installed rotatable gyro wheel, and the material of gyro wheel is nylon. The utility model can exert the elastic thrust to the downside of opening and closing board drive oil cylinder, makes the cylinder barrel and piston rod of opening and closing board drive oil cylinder be in a straight line, to solve the abnormal stress of piston ring, the abnormal wear and tear of sealing element, has improved the service life of opening and closing board drive oil cylinder.

Description

Technical Field

[0001] This utility model belongs to the field of filter press technology, specifically relating to a filter press opening and closing plate oil cylinder leveling device. Background Technology

[0002] Plate and frame filter presses are important equipment for sludge dewatering. A plate and frame filter press mainly consists of a frame, crossbeams, thrust plates, drive frame, filter plates, filter cloth and other devices. The filter plates move on the crossbeams to open and close the filter plates.

[0003] The filter plate opening and closing process in a filter press is frequent, requiring one opening and one closing per work cycle. The opening and closing mechanism mainly consists of components such as hydraulic cylinders, chains, and filter plates. The hydraulic cylinder, as the power component, directly determines whether the opening and closing mechanism can function properly. The reliability of the opening and closing mechanism significantly impacts the reliability of the equipment; therefore, the service life of the opening and closing cylinder is a crucial indicator that must be considered in product reliability design. If the opening and closing cylinder malfunctions, the filter press will not operate normally. For filter presses that drive the filter plate opening and closing via side-end hydraulic cylinders, the reliability of the side cylinders is paramount. Current filter press overall structures, such as... Figure 1 As shown.

[0004] Currently, the side-end cylinder (opening / closing plate drive cylinder) uses a double-acting hydraulic cylinder. The two hinge points of the cylinder are connected to the thrust plate and the fixed plate, respectively, leaving the entire cylinder suspended. Due to this suspension, the piston rings between the piston rod and the cylinder barrel bear a significant amount of cylinder weight, placing the seals on the piston rings under abnormal stress. During cylinder operation, the piston ring seals will wear abnormally, leading to an inability to effectively seal between the rod chamber and the non-rod chamber of the opening / closing plate cylinder after a period of operation, resulting in cylinder malfunction. Therefore, ensuring the service life of the cylinder seals is crucial for cylinder reliability.

[0005] Based on the installation form and working characteristics of the hydraulic cylinder on the opening and closing plate side of the filter press, this invention provides a leveling device for the hydraulic cylinder on the opening and closing plate side. It can adjust the force state of the hydraulic cylinder and ensure that the cylinder barrel and piston rod are in a horizontal state. This solves the problems of hydraulic cylinder suspension, abnormal wear of piston rings between the hydraulic cylinder piston rod and cylinder barrel, low reliability and short service life. Utility Model Content

[0006] The purpose of this invention is to provide a leveling device for the opening and closing plate cylinder of a filter press, which can apply an elastic thrust to the lower side of the opening and closing plate drive cylinder, so that the cylinder barrel and piston rod of the opening and closing plate drive cylinder are on the same horizontal line, thereby solving the problem of abnormal stress and abnormal wear of the seals on the piston ring and improving the service life of the opening and closing plate drive cylinder.

[0007] The specific technical solution adopted by this utility model is as follows:

[0008] A leveling device for the hydraulic cylinder of a filter press opening and closing plate includes a spring-loaded reset frame fixedly connected to one side of a crossbeam. A support plate is installed on the spring-loaded reset frame, and the spring-loaded reset frame is used to apply an upward thrust to one end of the support plate.

[0009] When the opening and closing plate drive cylinder is running, a thrust is applied to the lower side of the opening and closing plate drive cylinder through one end of the bracket plate.

[0010] Furthermore, a rotatable pin is installed at one end of the support plate, and a rotatable roller is installed on the outer side of the pin.

[0011] Furthermore, the roller is made of nylon.

[0012] Furthermore, the elastic reset frame includes a fixed base fixedly connected to one side of the crossbeam. Rotatable pins one and four are installed inside the fixed base. Pin one is installed on the outer side of the middle position of the support plate. A rotatable pin three is installed at the other end of the support plate. Pin three has a circular hole, and a rotatable screw is installed inside the circular hole. Pin four has a through hole, and the screw passes through the through hole of pin four. An elastic element is sleeved on the outer side of the screw between pin four and pin three. A nut is threaded onto the outer side of the screw, away from pin three.

[0013] Furthermore, the elastic element is an assembly of multiple butterfly springs, with the multiple butterfly springs sleeved on the outside of the screw.

[0014] Furthermore, the rod body of the screw located between pin three and pin four is a round rod structure.

[0015] Furthermore, the support plate is located on the lower side of the cylinder of the opening and closing plate driving cylinder.

[0016] The technical effects achieved by this utility model are as follows:

[0017] This utility model discloses a leveling device for the opening and closing plate cylinder of a filter press. It applies an elastic thrust to the lower side of the opening and closing plate drive cylinder, providing lower support to the lower side of the opening and closing plate drive cylinder, so that the cylinder barrel and piston rod of the opening and closing plate drive cylinder are on the same horizontal line. This solves the problem of abnormal stress and abnormal wear of the seals on the piston ring, and improves the service life of the opening and closing plate drive cylinder. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a filter press in the prior art;

[0019] Figure 2 This is a schematic diagram of the structure of this utility model when it is installed on a filter press;

[0020] Figure 3yes Figure 2 A magnified view of a section at point A in the middle;

[0021] Figure 4 This is a sectional side view of the structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of this utility model.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Crossbeam; 2. Filter plate; 3. Thrust plate; 4. Drive frame; 5. Opening and closing plate drive cylinder; 6. Piston rod hinge pin; 7. Cylinder body hinge pin; 8. Chain; 9. Fixed end plate; 10. Fixed seat; 11. Support plate; 12. Pin one; 13. Pin two; 14. Roller; 15. Pin three; 16. Pin four; 17. Screw; 18. Nut; 19. Butterfly spring; 20. Fixed plate. Detailed Implementation

[0025] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0026] like Figure 1 As shown, this is a type of filter press in the prior art, specifically a plate and frame filter press, including a crossbeam 1. Multiple filter plates 2 are slidably connected to the crossbeam 1. To enable the opening and closing of the filter plates 2, a fixing plate 20 is fixedly connected to one end of the crossbeam 1. A thrust plate 3 and a drive frame 4 are slidably connected to the crossbeam 1. A chain 8 is fixedly connected between the thrust plate 3 and the fixing plate 20. Both ends of the chain 8 are fixedly connected to the thrust plate 3 and the fixing plate 20, respectively. Multiple connection positions are provided on the chain 8, and the multiple filter plates 2 are respectively connected to the multiple connection positions of the chain 8, such as... Figure 1 As shown, when the thrust plate 3 moves towards Figure 1 When moving to the left, a thrust can be applied to multiple filter plates 2 to move them to the left, completing the closing of the multiple filter plates 2. When the thrust plate 3 moves towards... Figure 1 When moving to the right, multiple filter plates 2 can be pulled to the right by the chain 8 to open the multiple filter plates 2.

[0027] The thrust plate 3 and the drive frame 4 are fixedly connected. When the drive frame 4 moves, it will drive the thrust plate 3 to move together. A fixed end plate 9 is fixedly connected to the crossbeam 1. A piston rod hinge pin 6 is fixedly connected to the lower side of the fixed end plate 9. A cylinder hinge pin 7 is fixedly connected to the lower side of the drive frame 4. An opening and closing plate drive cylinder 5 is installed between the piston rod hinge pin 6 and the cylinder hinge pin 7. The opening and closing plate drive cylinder 5 includes a cylinder barrel, which is hinged to the cylinder hinge pin 7. A piston rod is installed on the cylinder barrel, and the piston rod and the piston rod hinge pin 6 are hinged together.

[0028] During the opening process, the opening and closing plate drive cylinder 5 drives the thrust plate 3 to move away from the fixed end plate 9. The thrust plate 3 drives the chain 8 to move, thereby moving the filter plates 2 on the crossbeam 1 to achieve the opening process. During the closing process, the opening and closing plate drive cylinder 5 drives the thrust plate 3 to move closer to the fixed end plate 9. The thrust plate 3 pushes each filter plate 2 to move, thereby achieving the closing process. In this arrangement, the opening and closing plate drive cylinder 5 adopts a structure with both ends fixed and the middle suspended.

[0029] The above-mentioned parts are mature existing technologies, and will not be described in detail in this technical solution.

[0030] like Figures 2-5 As shown, a leveling device for the opening and closing plate cylinder of a filter press is fixedly connected to the outside of the crossbeam 1 of the filter press, and the leveling device is located below the opening and closing plate drive cylinder 5. It is used to apply an elastic thrust to the lower side of the opening and closing plate drive cylinder 5 and provide lower support for the lower side of the opening and closing plate drive cylinder 5, so that the cylinder barrel and piston rod of the opening and closing plate drive cylinder 5 are on the same horizontal line. This solves the problem of abnormal stress and abnormal wear of the seals on the piston ring and improves the service life of the opening and closing plate drive cylinder 5.

[0031] In some embodiments, the leveling device for the filter press opening and closing plate cylinder includes a spring-loaded reset frame fixedly connected to one side of the crossbeam 1. A support plate 11 is mounted on the spring-loaded reset frame. The spring-loaded reset frame is used to apply an upward elastic thrust to one end of the support plate 11, thereby applying an elastic thrust to the lower side of the opening and closing plate drive cylinder 5 through one end of the support plate 11. This provides lower support to the lower side of the opening and closing plate drive cylinder 5 and absorbs or buffers the vibration generated during the movement of the opening and closing plate drive cylinder 5, ensuring the smooth operation of the opening and closing plate drive cylinder 5.

[0032] It should be noted that, as Figures 2-4As shown, in some embodiments, a rotatable pin 13 is installed at one end of the support plate 11, and a rotatable roller 14 is installed on the outer side of the pin 13. The roller 14 is preferably made of nylon, which can absorb or buffer the vibration generated during the movement of the opening and closing plate drive cylinder 5, ensuring the smooth operation of the opening and closing plate drive cylinder 5, and has good wear resistance. Furthermore, by using the roller 14 to replace the support plate 11 in contact with the opening and closing plate drive cylinder 5, the friction between the support plate 11 and the opening and closing plate drive cylinder 5 can be reduced, thereby reducing the wear on the opening and closing plate drive cylinder 5 during opening and closing and improving the service life of the opening and closing plate drive cylinder 5.

[0033] Among them, such as Figures 3-5 As shown, in some embodiments, the elastic reset frame includes a fixed base 10 fixedly connected to one side of the crossbeam 1. The fixed base 10 has rotatable pins 12 and 4 16 installed inside. The middle position of the support plate 11 is installed outside the pin 12, so that the support plate 11 can rotate with the axis of pin 12 as the center. The other end of the support plate 11 is equipped with a rotatable pin 3 15. A circular hole is opened on the pin 3 15, and a rotatable screw 17 is installed inside the circular hole. A through hole is opened on the pin 4 16, and the screw 17 passes through the through hole of the pin 4 16. An elastic element is sleeved on the outer side of the screw 17 between the pin 4 16 and the pin 3 15. A nut 18 is threadedly connected on the outer side of the screw 17 at a position away from the pin 3 15 from the pin 4 16. By rotating the nut 18, the preload on the screw 17 is adjusted, thereby changing the magnitude of the force on the pin 2 13 on the support plate 11.

[0034] In some embodiments, the elastic element is an assembly of multiple butterfly springs 19, which are sleeved on the outside of the screw 17. Meanwhile, the rod of the screw 17 located between the third pin 15 and the fourth pin 16 can be a round rod structure.

[0035] During installation, the preload on the screw 17 is adjusted by nut 18, which changes the force on the pin 13 on the bracket plate 11. According to the torque balance principle, the bracket plate 11 will rotate around the pin 12 until a new balance is reached. The disc spring 19, based on its unique conical disc structure, generates elastic deformation under axial load. It stores and releases energy by converting axial pressure into bending stress and radial tension of the disc material. Connecting multiple disc springs 19 in series can significantly increase the load-bearing capacity and is used for energy absorption or buffering during the movement of the opening and closing plate drive cylinder 5.

[0036] The roller 14 directly contacts the cylinder of the opening and closing plate drive cylinder 5, providing it with support. At the same time, during the movement of the opening and closing plate drive cylinder 5, the roller 14 can rotate with the pin 13, so that there is rolling friction between it and the cylinder, reducing the wear on the cylinder. In addition, the structure of the filter press opening and closing plate cylinder leveling device is relatively simple.

[0037] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A leveling device for the hydraulic cylinder of a filter press opening and closing plate, characterized in that: Includes a spring-loaded reset frame fixedly connected to one side of the crossbeam (1), on which a support plate (11) is mounted, and the spring-loaded reset frame is used to apply an upward thrust to one end of the support plate (11); When the opening and closing plate drive cylinder (5) is running, a thrust is applied to the lower side of the opening and closing plate drive cylinder (5) through one end of the bracket plate (11).

2. The oil cylinder leveling device for opening and closing plates of a filter press according to claim 1, characterized in that: One end of the support plate (11) is equipped with a rotatable pin (13), and a rotatable roller (14) is installed on the outside of the pin (13).

3. The oil cylinder leveling device for opening and closing plates of a filter press according to claim 2, characterized in that: The roller (14) is made of nylon.

4. The oil cylinder leveling device for opening and closing plates of a filter press according to claim 1, characterized in that: The elastic reset frame includes a fixed seat (10) fixedly connected to one side of the crossbeam (1). The fixed seat (10) is equipped with a rotatable pin 1 (12) and pin 4 (16). The middle position of the support plate (11) is installed on the outside of pin 1 (12). The other end of the support plate (11) is equipped with a rotatable pin 3 (15). A round hole is opened on pin 3 (15). A rotatable screw (17) is installed inside the round hole. A through hole is opened on pin 4 (16). The screw (17) passes through the through hole of pin 4 (16). An elastic element is sleeved on the outside of the screw (17) between pin 4 (16) and pin 3 (15). A nut (18) is threadedly connected on the outside of the screw (17) at a position away from pin 3 (15) from pin 4 (16).

5. The oil cylinder leveling device for opening and closing plates of a filter press according to claim 4, characterized in that: The elastic element is an assembly of multiple butterfly springs (19), which are sleeved on the outside of the screw (17).

6. The leveling device for the opening and closing plate hydraulic cylinder of a filter press according to claim 5, characterized in that: The screw (17) located between pin three (15) and pin four (16) has a round rod structure.

7. The oil cylinder leveling device for opening and closing plates of a filter press according to claim 1, characterized in that: The support plate (11) is located on the lower side of the cylinder of the opening and closing plate driving cylinder (5).

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