Sealing device for piston rod of central mechanism

Abstract

The utility model discloses a piston rod sealing device of a center mechanism, and relates to the technical field of vulcanizing machines, the piston rod sealing device comprises a sealing assembly and a loading and unloading tool, the sealing assembly comprises a ring seat, V-shaped sealing rings, a pressing sleeve and a pressing cover, an annular seat with the inner diameter larger than the outer diameter of a piston rod is arranged on the inner wall of the ring seat, and the V-shaped sealing rings are vertically overlapped and clamped on the inner wall of the ring seat. The base is arranged on the annular base; the pressing sleeve is installed on the inner wall of the ring base in a threaded mode and used for downwards extruding the sealing ring, and two axial inserting holes are formed in the top of the pressing sleeve. The gland is mounted at the top of the ring seat through a plurality of bolts; the assembling and disassembling tool comprises a cylindrical body with the inner diameter larger than the outer diameter of the piston rod, the cylindrical body comprises an exposed part on the upper side and an inserting part on the lower side, the outer diameter of the inserting part is smaller than the inner diameter of the ring base, and two inserting rods in one-to-one correspondence with the inserting holes are arranged at the bottom of the inserting part. The sealing assembly is simple in structure, convenient to disassemble and assemble and good in sealing effect, the pressing sleeve can be quickly disassembled and assembled through an attached assembling and disassembling tool, and the replacement time of the V-shaped sealing ring is effectively saved.

Description

Technical Field

[0001] The utility model relates to the technical field of vulcanizers, and particularly relates to a piston rod sealing device for a central mechanism. Background Art

[0002] The existing sealing mechanism of the piston rod of the central mechanism of the vulcanizer has a complex structure, is not convenient for disassembly and assembly, consumes a large amount of time and energy during disassembly, and affects the preheating and normal production of the vulcanization equipment.

[0003] Therefore, there is an urgent need to develop a new piston rod sealing device for the central mechanism. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a piston rod sealing device for a central mechanism aiming at the defects existing in the prior art.

[0005] The technical solution of the utility model is: a piston rod sealing device for a central mechanism, comprising a sealing assembly and a loading and unloading tooling. The sealing assembly comprises a ring seat, a sealing ring, a pressing sleeve and a pressing cover. A circular seat with an inner diameter larger than the outer diameter of the piston rod is arranged on the inner wall of the ring seat. A plurality of the sealing rings are stacked and clamped on the inner wall of the ring seat and are located above the circular seat. The inner diameter of the pressing sleeve is larger than the outer diameter of the piston rod, and it is threadedly installed on the inner wall of the ring seat for pressing the sealing ring downward. A plurality of axial insertion holes are arranged at the top of the pressing sleeve, and the pressing cover is installed on the top of the ring seat through a plurality of bolts.

[0006] The loading and unloading tooling comprises a cylindrical main body with an inner diameter larger than the outer diameter of the piston rod. The cylindrical main body comprises an exposed part on the upper side and an inserted part on the lower side. The outer diameter of the inserted part is smaller than the inner diameter of the ring seat, and a plurality of insertion rods corresponding to the insertion holes one by one are arranged at the bottom thereof.

[0007] Preferably, the outer wall of the exposed part is hexagonal prism-shaped.

[0008] Preferably, two insertion holes arranged in a circumferential array are arranged at the top of the pressing sleeve. Correspondingly, two insertion rods arranged in a circumferential array are arranged at the bottom of the inserted part.

[0009] Preferably, four axial threaded holes are arranged in a circumferential array at the bottom of the inserted part, and the upper ends of the insertion rods are threadedly installed in the threaded holes.

[0010] Preferably, the sealing ring is a V-shaped sealing ring.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] The sealing assembly of the utility model has a simple structure, is convenient for disassembly and assembly, has a good sealing effect, can quickly disassemble and assemble the pressing sleeve through the allocated loading and unloading tooling, effectively saves the replacement time of the V-shaped sealing ring, and reduces the influence on the preheating and normal production of the vulcanization equipment. Description of the Drawings

[0013] Figure 1 It is a schematic structural diagram of a sealing assembly;

[0014] Figure 2 It is a schematic structural diagram of a loading and unloading tooling;

[0015] Figure 3 It is the Figure 2 bottom view of

[0016] In the figure: 1, ring seat, 101, annular seat, 2, sealing ring, 3, compression sleeve, 301, jack, 4, gland, 5, piston rod, 6, exposed part, 7, inserted part, 701, threaded hole, 8, inserted rod. Detailed Description of the Invention

[0017] The following further describes the present invention in conjunction with the drawings and embodiments. Embodiment 1

[0018] Referring to Figure 1-2 as shown, a sealing device for the piston rod 5 of a central mechanism includes a sealing assembly and a loading and unloading tooling. The sealing assembly includes a ring seat 1, a V-shaped sealing ring 2, a compression sleeve 3 and a gland 4. An annular seat 101 with an inner diameter larger than the outer diameter of the piston rod 5 is provided on the inner wall of the ring seat 1. A plurality of V-shaped sealing rings 2 are stacked and clamped on the inner wall of the ring seat 1 and are located above the annular seat 101. The inner diameter of the compression sleeve 3 is larger than the outer diameter of the piston rod 5, and it is threadedly installed on the inner wall of the ring seat 1 for pressing the sealing ring 2 downward. Two axial jacks 301 are opened at the top of the compression sleeve 3, and the gland 4 is installed on the top of the ring seat 1 through a plurality of bolts.

[0019] The loading and unloading tooling includes a cylindrical main body with an inner diameter larger than the outer diameter of the piston rod 5. The cylindrical main body includes an upper exposed part 6 and a lower inserted part 7. The outer diameter of the inserted part 7 is smaller than the inner diameter of the ring seat 1, and two inserted rods 8 corresponding to the jacks 301 one by one are provided at the bottom thereof.

[0020] More specifically, the outer wall of the exposed part 6 is hexagonal. Two jacks 301 arranged in a circumferential array are opened at the top of the compression sleeve 3. Correspondingly, two inserted rods 8 arranged in a circumferential array are provided at the bottom of the inserted part 7.

[0021] During disassembly, first remove the gland 4, then put the loading and unloading tooling on the piston rod 5, and insert the inserted part 7 into the annular space between the ring seat 1 and the piston rod 5. Rotate the loading and unloading tooling until the inserted rod 8 is inserted into the jack 301. Then, turn the exposed part 6 with a wrench to take out the compression sleeve 3. Finally, the V-shaped sealing ring 2 can be replaced. After replacement, reinstall the compression sleeve 3 through the loading and unloading tooling, and finally install the gland 4.

[0022] This sealing assembly has a simple structure, is convenient for disassembly and assembly, and has a good sealing effect. The pressure sleeve 3 can be quickly disassembled and assembled through the allocated loading and unloading tooling, effectively saving the replacement time of the V-shaped sealing ring 2 and reducing the impact on the preheating of the vulcanization equipment and normal production. Embodiment 2

[0023] As a preferred embodiment of the present utility model, the structure of the loading and unloading tooling is optimized based on Embodiment 1, specifically as follows:

[0024] Refer to Figure 3 As shown, in this embodiment, four axial threaded holes 701 are arranged in a circumferential array at the bottom of the insertion part 7, and the upper end of the insertion rod 8 is threadedly installed in the threaded hole 701.

[0025] After long-term use, a pair of threaded holes 701 for installing the insertion rod 8 will be damaged. At this time, the insertion rod 8 can be installed in another pair of threaded holes 701.

[0026] The present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the purpose of the present utility model, and the changed content still falls within the protection scope of the present utility model.

Claims

1. A central mechanism piston rod sealing device, characterized in that: It includes a sealing component and a loading and unloading tooling. The sealing component includes a ring seat, a sealing ring, a pressing sleeve and a pressing cover. A circular seat with an inner diameter larger than the outer diameter of the piston rod is provided on the inner wall of the ring seat. A plurality of the sealing rings are stacked and clamped on the inner wall of the ring seat and are located above the circular seat. The inner diameter of the pressing sleeve is larger than the outer diameter of the piston rod, and it is threadedly installed on the inner wall of the ring seat for pressing the sealing ring downward. A plurality of axial insertion holes are provided at the top of the pressing sleeve, and the pressing cover is installed on the top of the ring seat through a plurality of bolts. The loading and unloading tooling includes a cylindrical main body with an inner diameter larger than the outer diameter of the piston rod. The cylindrical main body includes an exposed part on the upper side and an inserted part on the lower side. The outer diameter of the inserted part is smaller than the inner diameter of the ring seat, and a plurality of insertion rods corresponding to the insertion holes one by one are provided at the bottom thereof.

2. The piston rod sealing device of a central mechanism according to claim 1, characterized in that: The outer wall of the exposed part is hexagonal prism-shaped.

3. The piston rod sealing device of a central mechanism according to claim 1, characterized in that: Two insertion holes arranged in a circular array are provided at the top of the pressing sleeve. Correspondingly, two insertion rods arranged in a circular array are provided at the bottom of the inserted part.

4. The piston rod sealing device of a central mechanism according to claim 3, characterized in that: Four axial threaded holes are provided in a circular array at the bottom of the inserted part, and the upper ends of the insertion rods are threadedly installed in the threaded holes.

5. A central mechanism piston rod sealing device according to claim 1, characterized in that: The sealing ring is a V-shaped sealing ring.

Images