Auxiliary device for simply replacing oil cylinder sealing ring

Abstract

The utility model relates to an auxiliary device for simply replacing a sealing ring of an oil cylinder, which comprises two groups of moving mechanisms and at least two groups of connecting mechanisms, the two groups of moving mechanisms can respectively move along two cross beams of a plate-and-frame filter press, the at least two groups of connecting mechanisms are connected between the two groups of moving mechanisms, and a bearing mechanism for bearing a piston rod is arranged on each group of connecting mechanism. According to the utility model, the piston rod can be easily separated from the cylinder body, keeps the original state and does not incline, the follow-up mounting work of the piston rod is facilitated, two cross beams of the plate-and-frame filter press are used as supports, a portal frame is not needed, and the working difficulty is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cylinder maintenance, in particular to an auxiliary device for simply replacing the sealing ring of a cylinder. Background Art

[0002] In the production process of citric acid, a plate and frame filter press is often used for solid-liquid separation. The power source of the plate and frame filter press comes from a cylinder. After the cylinder is used for a period of time, the sealing ring will be damaged, and the phenomenon of shaft seal oil leakage is likely to occur. The cylinder cannot maintain pressure, and the top plate will become loose, resulting in a poor tightening effect. Therefore, the sealing ring must be replaced.

[0003] Due to the large size of the cylinder, the current method of replacing the sealing ring is to support a gantry above the cylinder, hang a chain block on the gantry, use the chain block of the gantry to pull the piston rod, then loosen the connection between the piston rod and the top plate and the shaft seal between the piston rod and the outer cylinder, and then try to disconnect the piston rod from the outer cylinder to expose the sealing ring. After replacing the sealing ring, the piston rod is reinstalled. The operation is difficult, time-consuming and laborious. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides an auxiliary device for simply replacing the sealing ring of a cylinder.

[0005] The utility model is realized by the following technical solutions: an auxiliary device for simply replacing the sealing ring of a cylinder is provided, which includes two groups of moving mechanisms that can move along two cross beams of the plate and frame filter press respectively, and at least two groups of connecting mechanisms connected between the two groups of moving mechanisms. A supporting mechanism for supporting the piston rod is installed on each group of connecting mechanisms.

[0006] Preferably, each group of moving mechanisms includes two moving parts located on the same cross beam and a fixing rod connected between the two moving parts.

[0007] Preferably, each moving part includes a moving plate located above the cross beam and two limiting plates fixed to the moving plate and located on both sides of the cross beam. A roller is installed below the moving plate, and both ends of the roller are rotatably connected to the two limiting plates. The roller contacts the cross beam and is limited by the limiting plates, which facilitates the stable movement of the moving mechanism along the cross beam.

[0008] Preferably, two moving parts of different groups are connected by a group of connecting mechanisms, and a vertical plate is fixed on each moving plate.

[0009] Preferably, each group of connecting mechanisms includes a connecting plate and connecting screws fixed at both ends of the connecting plate. The two connecting screws respectively penetrate through a vertical plate, and locking nuts are connected to the connecting screws on both sides of the vertical plate. The connecting screw is fixed to the vertical plate through the cooperation of the two locking nuts. Since the connecting screw has a certain length, it can adapt to the work of replacing the sealing ring of the cylinders of different plate and frame filter presses, and has a wide adaptation range.

[0010] Preferably, a long strip through hole is provided on the connecting plate. Each supporting mechanism includes a U-shaped rod and fixing screws respectively installed at both ends of the U-shaped rod. The two fixing screws penetrate through the long strip through hole from below and are respectively connected with fixing nuts. In this way, the two U-shaped rods are arranged along the direction of the piston rod to support the piston rod, which is convenient for limiting the piston rod after it is removed.

[0011] The beneficial effects of the present utility model are as follows:

[0012] 1. The structure of the present utility model is simple and the installation is convenient. By using the two cross beams of the plate and frame filter press as supports, there is no need to use a gantry, which reduces the working difficulty.

[0013] 2. Through the present utility model, the piston rod can be easily detached from the cylinder block and remain in its original state without tilting, which is convenient for the subsequent installation work of the piston rod; the present utility model can be widely applied to the replacement of the sealing rings of different plate and frame filter press oil cylinders, and has a wide application range. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a top view structural schematic diagram of the present utility model;

[0015] Figure 2 is a side view structural schematic diagram of the present utility model;

[0016] As shown in the figure:

[0017] 1. Cross beam, 2. Piston rod, 3. Fixed rod, 4. Moving plate, 5. Limiting plate, 6. Roller, 7. Vertical plate, 8. Connecting plate, 9. Connecting screw, 10. Locking nut, 11. Long strip through hole, 12. U-shaped rod, 13. Fixing screw, 14. Fixing nut. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] In order to clearly illustrate the technical features of the present solution, the present solution will be described below through specific embodiments.

[0019] As Figure 1 , 2 shown, the present utility model includes two groups of moving mechanisms that can respectively move along the two cross beams 1 of the plate and frame filter press and at least two groups of connecting mechanisms connected between the two groups of moving mechanisms. A supporting mechanism for supporting the piston rod 2 is installed on each group of connecting mechanisms.

[0020] Each moving mechanism consists of two moving members positioned on a common beam 1 and a fixed rod 3 connected between the two moving members. Each moving member comprises a moving plate 4 positioned above the beam 1 and two stopper plates 5 fixed to the moving plate 4 and located on either side of the beam 1. Rollers 6 are mounted beneath the moving plate 4, their ends rotatably connected to the two stopper plates 5. The contact between the rollers 6 and the beam 1 and the stopper plates 5 ensure stable movement of the moving mechanism along the beam 1.

[0021] The two moving parts in different groups are connected by a set of connecting mechanisms, and a vertical plate 7 is fixed to each moving plate 4. Each set of connecting mechanisms includes a connecting plate 8 and connecting screws 9 fixed at both ends of the connecting plate 8. The two connecting screws 9 each penetrate a corresponding vertical plate 7. Locking nuts 10 are connected to the connecting screws 9 on both sides of the vertical plate 7. The two locking nuts 10 cooperate to secure the connecting screws 9 to the vertical plate 7. Because the connecting screws 9 have a certain length, they can accommodate the replacement of oil cylinder seals in different plate and frame filter presses, and have a wide range of applications.

[0022] The connecting plate 8 is provided with an elongated through hole 11. Each supporting mechanism includes a U-shaped rod 12 and fixed screws 13 respectively mounted at both ends of the U-shaped rod 12. The two fixed screws 13 pass through the elongated through hole 11 from below and are respectively connected to fixed nuts 14. In this way, the two U-shaped rods 12 are arranged along the direction of the piston rod 2 and support the piston rod 2, making it convenient to limit the position of the piston rod 2 after the piston rod 2 is removed.

[0023] During the specific work, first place the two sets of moving mechanisms on the two beams 1, and then install two sets of connecting mechanisms between the two sets of moving mechanisms, and install a U-shaped rod 12 on each set of connecting mechanisms. The bottom of the U-shaped rod 12 supports the piston rod 2, and the fixed screw 13 at the top of the U-shaped rod 12 is connected to the connecting plate 8. After completing the installation of this device, release the connection between the piston rod 2 and the top plate and the shaft seal between the piston rod 2 and the outer cylinder, and push the moving mechanism along the beam 1 to disengage the piston rod 2 from the outer cylinder. At this time, the sealing ring can be replaced. After the sealing ring is replaced, push the moving mechanism again to make the piston rod 2 enter the inner part of the outer cylinder. The operation is convenient, time-saving and labor-saving.

[0024] The utility model has a simple structure and is easy to install. It uses the two cross beams 1 of the plate and frame filter press as support, and does not require a gantry, which reduces the difficulty of work. The piston rod 2 can be easily detached from the cylinder body and maintain its original state without tilting, which facilitates the subsequent installation of the piston rod 2. The utility model can be widely used in the replacement of sealing rings of oil cylinders of different plate and frame filter presses and has a wide range of applications.

[0025] Of course, the above description is not limited to the above examples. The technical features not described in this utility model can be realized by or adopted from the prior art, and will not be elaborated here. The above embodiments and accompanying drawings are only used to illustrate the technical solutions of this utility model and are not a limitation to this utility model. The detailed description of this utility model has been made with reference to the preferred embodiments. Those of ordinary skill in the art should understand that any changes, modifications, additions or substitutions made by those of ordinary skill in this technical field within the essence of this utility model do not depart from the purpose of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. An auxiliary device for easily replacing the oil cylinder sealing ring, characterized in that: It includes two sets of moving mechanisms that can move along two crossbeams of a plate and frame filter press respectively, and at least two sets of connecting mechanisms connected between the two sets of moving mechanisms. A supporting mechanism for supporting the piston rod is installed on each set of connecting mechanisms.

2. The auxiliary device for simply replacing the oil cylinder sealing ring according to claim 1, characterized in that: Each set of moving mechanisms includes two moving parts located on the same crossbeam and a fixing rod connected between the two moving parts.

3. An auxiliary device for simply replacing the oil cylinder seal ring according to claim 2, characterized in that: Each moving part includes a moving plate located above the crossbeam and two limiting plates fixed to the moving plate and located on both sides of the crossbeam. Rollers are installed below the moving plate, and both ends of the rollers are rotatably connected to the two limiting plates.

4. An auxiliary device for simply replacing the oil cylinder seal ring according to claim 3, characterized in that: Two moving parts in different sets are connected by a set of connecting mechanisms respectively, and a vertical plate is fixed on each moving plate.

5. An auxiliary device for simply replacing the oil cylinder seal ring according to claim 4, characterized in that: Each set of connecting mechanisms includes a connecting plate and connecting screws fixed at both ends of the connecting plate. The two connecting screws respectively penetrate through a vertical plate, and locking nuts are connected to the connecting screws on both sides of the vertical plate.

6. An auxiliary device for simply replacing the oil cylinder sealing ring according to claim 5, characterized in that: A long strip through-hole is provided on the connecting plate. Each supporting mechanism includes a U-shaped rod and fixing screws respectively installed at both ends of the U-shaped rod. The two fixing screws penetrate through the long strip through-hole from below and are respectively connected to fixing nuts.

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