A split seal device

Abstract

The application belongs to the technical field of pressure vessel sealing and provides a half-split sealing device, which comprises two half-split pressing sleeves and two half-split sealing rings, a half-split mounting seat is arranged at the intersection of the inner ring and the end face of the half-split pressing sleeve; the half-split sealing ring comprises a radial sealing part, an end face sealing part and a butt joint part, the radial sealing part, the end face sealing part and the butt joint part are perpendicular to each other in pairs, the end parts of the half-split mounting seats of the two half-split pressing sleeves have a gap therebetween, the gap clamps the butt joint parts of the two half-split sealing rings which are in parallel butt joint, and the size of the half-split mounting seat is matched with the size of the half-split sealing ring. The application is connected with the mounting end face by using the two half-split pressing sleeves, and the radial sealing and the sealing between the mounting end face and the shaft are realized by using the two half-split sealing rings, the half-split pressing sleeve and the half-split sealing ring are both half-split structures, the sealing device can be disassembled and assembled without disassembling the shaft, the time for maintenance or replacement is saved, and the efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of pressure vessel sealing, in particular to a split sealing device. BACKGROUND

[0002] The sealing device is a component or combination of components used to prevent fluid or solid particles from leaking between adjacent joint surfaces or to prevent external impurities from entering the internal part of the machine equipment.

[0003] Large pressure vessels such as the furnace body of a vacuum hot pressing furnace and the connection of the shaft connected to the pressure head are provided with sealing devices to prevent pressure leakage. One end of the shaft is movably connected to the hydraulic system, and the other end is movably connected to the furnace body. The existing sealing device is sleeved on the shaft. Therefore, when the sealing device is overhauled or replaced, the shaft needs to be removed first, which makes the overhaul or replacement cumbersome. SUMMARY

[0004] The present application provides a split sealing device to solve the above technical problems.

[0005] The present application is implemented as follows: a split sealing device includes two split pressure sleeves and two split sealing rings. The split pressure sleeve is a half-ring structure, and the two split pressure sleeves are butt-jointed to form a ring structure. The inner circle of the split pressure sleeve is inwardly opened at the intersection with the end face to form a split mounting seat in a stepped shape.

[0006] The split sealing ring is a half-ring structure, and the two split sealing rings are butt-jointed to form a ring structure. The split sealing ring includes a radial sealing part, an end face sealing part, and a butt joint part. The radial sealing part, the end face sealing part, and the butt joint part are perpendicular to each other in pairs. The butt joint part is arranged at both ends of the half-ring structure of the split sealing ring. The butt joint parts of the two split sealing rings are mutually parallel and butt-jointed.

[0007] The radial sealing part of the split sealing ring is attached to the radial face of the split mounting seat, and the end face sealing part of the split sealing ring is attached to the end face of the split mounting seat. The end parts of the split mounting seats of the two split pressure sleeves have a gap therebetween. The gap clamps the butt joint parts of the two split sealing rings that are mutually parallel and butt-jointed. The size of the split mounting seat in a stepped shape matches the size of the split sealing ring.

[0008] Further, a ring groove is formed along the length direction of the radial sealing part. The ring grooves of the radial sealing parts of the two split sealing rings are in communication with each other.

[0009] Still further, a flow channel is formed in the split pressure sleeve. One end of the flow channel extends to the radial face of the split mounting seat, and the other end of the flow channel extends to the outside of the split pressure sleeve.

[0010] Further, the end of the two half-pressing sleeves is provided with a radial locking hole.

[0011] Further, the half-pressing sleeve is provided with an end face locking hole.

[0012] Advantages

[0013] The half-sealing device provided by the application utilizes two half-pressing sleeves to connect with the installation end face, utilizes two half-sealing rings to respectively seal the radial direction of the shaft and the installation end face, and the half-pressing sleeve and the half-sealing ring are both half-structure, so that the half-sealing device can be disassembled and assembled without disassembling the shaft, the time for maintenance or replacement is saved, and the efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a structural schematic diagram of the half-sealing device provided by the embodiment of the application;

[0015] Figure 2 is a combined structural schematic diagram of the two half-pressing sleeves;

[0016] Figure 3 is a structural schematic diagram of the half-pressing sleeve;

[0017] Figure 4 is a combined structural schematic diagram of the half-sealing ring;

[0018] Figure 5 is a structural schematic diagram of the half-sealing ring;

[0019] Figure 6 is a structural schematic diagram of the half-sealing ring from another perspective;

[0020] Figure 7 is a perspective view of the half-sealing device provided by the embodiment of the application;

[0021] Figure 8 is an installation effect diagram of the half-sealing device provided by the embodiment of the application.

[0022] The reference signs in the drawings represent: 01-shaft, 02-furnace body, 1-half-pressing sleeve, 2-half-sealing ring, 201-radial sealing part, 202-end face sealing part, 203-butting part, 3-radial locking hole, 4-end face locking hole, 5-ring groove, 6-half-structure installation seat, 7-clearance, 8-flow channel. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the application more clear and understandable, the application is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the application, and are not used to limit the application.

[0024] Referring to Figures 1-7 The half-seal device comprises two half-pressing sleeves 1 and two half-seal rings 2. The half-pressing sleeve 1 is a half-ring structure, and the two half-pressing sleeves 1 are connected to form a ring structure. The inner circle of the half-pressing sleeve 1 is provided with a stepped half-mounting seat 6.

[0025] The two half-pressing sleeves 1 and the two half-seal rings 2 jointly form a ring structure. The inner diameter of the ring structure matches the diameter of the shaft passing through the half-seal device, thereby avoiding pressure leakage.

[0026] The half-mounting seat 6 and the half-pressing sleeve 1 jointly form a stepped structure, which facilitates the installation and fixation of the half-seal ring 2.

[0027] The half-seal ring 2 is a half-ring structure, and the two half-seal rings 2 are connected to form a ring structure. The half-seal ring 2 comprises a radial sealing part 201, an end face sealing part 202, and an abutting part 203. The radial sealing part 201, the end face sealing part 202, and the abutting part 203 are perpendicular to each other. The abutting part 203 is arranged at the two ends of the half-ring structure of the half-seal ring 2. The abutting parts 203 of the two half-seal rings 2 are parallel to each other.

[0028] The half-seal ring 2 is an integral structure. The material is preferably fluorine rubber. The mutually perpendicular sealing parts 201, the end face sealing parts 202, and the abutting parts 203 can simultaneously seal the side surface of the shaft and the mounting end face. The parallel abutting of the abutting parts 203 can ensure that the two half-seal rings 2 do not leak pressure after being connected.

[0029] The radial sealing part 201 is attached to the radial surface of the half-mounting seat 6. The end face sealing part 202 is attached to the end face of the half-mounting seat 6. The end part of the half-mounting seat 6 of the opposite half-pressing sleeve 1 has a gap 7. The gap 7 clamps the abutting parts 203 of the two half-seal rings 2 that are parallel to each other. The size of the stepped half-mounting seat 6 matches the size of the half-seal ring 2.

[0030] One side of the radial sealing part 201 is attached to the shaft, and the other side is attached to the half-mounting seat 6. One side of the end face sealing part 202 is attached to the half-mounting seat 6, and the other side is attached to the mounting end face. The radial and end face sealing are simultaneously realized.

[0031] The width of the gap 7 is slightly smaller than twice the thickness of the abutting part 203. The opposite abutting parts 203 are clamped in the gap 7 after being connected, thereby ensuring the sealing performance.

[0032] The depth of the stepped half-mounting seat 6 is slightly smaller than the thickness of the half-seal ring 2. The half-seal ring 2 is tightly attached to the shaft and the mounting end face under the limitation of the half-pressing sleeve 1, thereby ensuring the sealing performance.

[0033] In order to facilitate lubrication or cooling of the shaft, an annular groove 5 is provided along the length direction of the radial sealing portion 201, and the annular grooves 5 of the radial sealing portions 201 of the two half-sealing rings 2 are interconnected. A flow channel 8 is provided inside the half-compression sleeve 1, one end of the flow channel 8 extends to the radial surface of the half-type mounting seat 6, and the other end of the flow channel 8 extends to the outside of the half-compression sleeve 1. Lubricating oil or cooling liquid can enter the annular groove 5 inside the half-sealing ring 2 through the flow channel 8 on one side of the half-compression sleeve 1 for lubrication or cooling of the shaft. The lubricating oil or cooling liquid can flow out through the flow channel 8 on the other side of the half-compression sleeve 1, and then return to the annular groove 5 after being processed by external circulation equipment or heat dissipation equipment, thereby achieving instant renewal of the lubricating oil or cooling liquid.

[0034] The ends of the two compression sleeve halves 1 are provided with radial locking holes 3, which are threaded with bolts. The two compression sleeve halves 1 are bolted together through the radial locking holes 3. Two pairs of radial locking holes 3 can be provided at each end of the compression sleeve halves 1 to ensure the overall connection strength.

[0035] The half compression sleeve 1 is radially provided with end face locking holes 4 for connecting with the mounting end face. The two half compression sleeves 1 can respectively be provided with four end face locking holes 4 to ensure the overall connection strength.

[0036] The split-half sealing device provided in the above embodiments of the present invention is suitable for sealing a vacuum hot pressing furnace or other hydraulic or pneumatic pressure vessels.

[0037] See also Figure 7 、 8 When the split-half sealing device provided by the embodiment of the present invention is applied to a vacuum hot pressing furnace, the split-half sealing ring 2 is installed in the split-half compression sleeve 1, the two split-half compression sleeves 1 are butt-jointed and surround the shaft 01, the two split-half compression sleeves 1 are connected by bolts through the radial locking holes 3, and are connected to the outer wall of the furnace body 02 through the end face locking holes 4, so as to achieve simultaneous radial and end face sealing. When the front end of the shaft 01 is connected to the hydraulic system and the sealing device needs to be disassembled, it is only necessary to separate the two split-half compression sleeves 1 and the two split-half sealing rings 2 without removing the shaft 01.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A split-half sealing device, used in a vacuum hot pressing furnace, characterized by: It includes two half-compression sleeves and two half-sealing rings. The half-compression sleeves are semi-annular structures. The two half-compression sleeves are butted together to form an annular structure. A stepped half-type mounting seat is provided inwardly at the intersection of the inner ring and the end face of the half-compression sleeve. The split sealing ring is a semi-annular structure. Two of the split sealing rings are butted together to form an annular structure. The split sealing ring includes a radial sealing portion, an end face sealing portion, and a butt joint portion. The radial sealing portion, the end face sealing portion, and the butt joint portion are perpendicular to each other. The butt joint portions are provided at both ends of the semi-annular structure of the split sealing ring. The butt joint portions of the two split sealing rings are butt jointed parallel to each other. The split sealing ring is an integrally formed structure and is made of fluororubber. The radial sealing portion fits the radial surface of the half-type mounting seat, the end face sealing portion fits the end face of the half-type mounting seat, a gap is formed between the ends of the two opposite half-type mounting seats of the half-type compression sleeve, the gap clamps the butt joints of the two half-type sealing rings that are parallel to each other, and the size of the stepped half-type mounting seat matches the size of the half-type sealing ring; The width of the gap is slightly smaller than twice the thickness of the butting portion, and the step depth of the half-type mounting seat is slightly smaller than the thickness of the half-sealing ring.

2. The split-half sealing device according to claim 1, characterized in that: An annular groove is provided along the length direction of the radial sealing portion, and the annular grooves of the radial sealing portions of the two half sealing rings are communicated with each other.

3. The split-half sealing device according to claim 2, characterized in that: A flow channel is provided inside the half-compression sleeve, one end of the flow channel extends to the radial surface of the half-type mounting seat, and the other end of the flow channel extends to the outside of the half-compression sleeve.

4. The split-half sealing device according to claim 1, characterized in that: The ends of the two half compression sleeves are correspondingly provided with radial locking holes, and threaded connection bolts are inserted into the radial locking holes.

5. The split-half sealing device according to claim 1, characterized in that: The half compression sleeves are radially provided with end face locking holes.

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