A sealing device for a closed centrifuge with manual loading and unloading

Abstract

The invention discloses a sealing device for a manually unloading closed centrifuge, comprising a transmission seat and a sealing box. The transmission seat and the sealing box are installed, the structure is simple, the installation is easy, and the later maintenance is convenient. A static ring is installed, so that the influence of large errors in the installation and working process on the sealing performance is solved, so that the load of the contact surface is reduced. A water seal pipe is arranged, so that the temperature generated by the friction when the transmission rod is working is greatly reduced, and at the same time, the influence of high temperature on the sealing effect is prevented. An oil cylinder is arranged, so that the friction of the transmission rod is reduced and the transmission rod is protected, so that the sealing power is reduced. A filling material is installed to discharge the air in the oil cylinder and improve the working stability of the oil cylinder. A first sealing ring and a second sealing ring are installed, the size is compact, the installation is suitable, and the sealing effect is further guaranteed. An oil inlet is installed, so that oil can be fed in time, friction is reduced, the service life of the sealing component is increased, and practicality is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of production sealing equipment, and in particular relates to a sealing device for a manually loaded and unloaded closed centrifuge. Background Art

[0002] A centrifuge is a machine that uses centrifugal force to separate liquids from solid particles or components in a mixture of liquids and liquids. A centrifuge is mainly used to separate solid particles from liquids in a suspension, or to separate two immiscible liquids of different densities in an emulsion. It can also be used to remove liquids from wet solids. Special ultra-speed tubular separators can also separate gas mixtures of different densities. Some sedimentation centrifuges can also classify solid particles by density or particle size by using the characteristics of different sedimentation speeds of solid particles of different densities or particle sizes in liquids. Centrifugal seals are devices that use a rotating body to drive fluids to generate centrifugal force to overcome leakage. Their sealing ability comes from the work done by the sealing element driven by the rotation of the machine shaft, so it is a kind of dynamic seal. However, some sealing devices have direct contact friction pairs, which produce greater friction, resulting in unstable operation. Centrifugal seals consume a lot of power, and the sealing rings are affected by high temperatures, are prone to aging, and lose elasticity, resulting in poor sealing and affecting the sealing effect. Summary of the invention

[0003] To overcome the deficiencies of the prior art, the present invention aims to provide a sealing device for a manually unloading closed centrifuge, comprising a transmission seat and a sealing box, which has a simple structure, is easy to install, is convenient for later maintenance, has a compact size, and has a long service life and provides sealing.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] A sealing device for a manually unloading closed centrifuge comprises a transmission seat and a sealing box, wherein the transmission seat is arranged on one side of the sealing box; the transmission seat comprises a transmission collar and a transmission rod, the transmission rod penetrates the sealing box, and the transmission seat and the transmission rod are fixedly connected via the transmission collar; the sealing box comprises an oil cylinder, a dynamic ring, a static ring, a water seal pipe, a pressure plate, a seal and a wear-resistant material, wherein the oil cylinder is arranged on one side of the transmission rod, the dynamic ring and the static ring are arranged on the outer surface of the transmission rod, the static ring is arranged on one side of the water seal pipe, the water seal pipe is arranged on one side of the water seal pipe, the pressure plate is arranged on one side of the oil cylinder, the sealing box is arranged as a two-side structure, and the wear-resistant material is filled in the interlayer of the sealing box.

[0006] Furthermore, the oil cylinder includes a cylinder cover, a piston rod, a buffer block, a piston, a nut, a support block and a filling material. The cylinder cover is arranged at the upper end of the piston rod, a buffer block is connected to one side of the piston rod, a piston is arranged at the lower end of the buffer block, a nut is arranged on the other side of the piston, the support block is arranged at the lower end of the oil cylinder, and the filling material is evenly filled in the interior of the oil cylinder.

[0007] Furthermore, the stationary ring is provided with a stationary ring sealing ring, and the stationary ring sealing ring is arranged on the upper surface of the stationary ring.

[0008] Furthermore, the static ring is made of magnetic material.

[0009] Furthermore, the seal includes a first sealing ring, a second sealing ring, a groove, a retaining ring and an oil inlet, the first sealing ring is arranged outside the second sealing ring, the groove is arranged on the inner surface of the first sealing ring, the retaining ring is arranged on the outer surface of the second sealing ring, and the oil inlet is arranged on the outer surface of the first sealing ring.

[0010] Furthermore, the diameter of the second sealing ring is smaller than the diameter of the first sealing ring.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The sealing device of the manually unloading closed centrifuge proposed by the present invention has a simple structure, is easy to install, and is convenient for later maintenance by installing a transmission seat and a sealing box. By installing a static ring, the influence of large errors in the installation and working process on the sealing performance is solved, so that the load on the contact surface is reduced. By arranging a water seal pipe, the temperature generated by friction when the transmission rod is working is greatly reduced, and at the same time, the high temperature is prevented from affecting the sealing effect.

[0013] 2. The sealing device of the manually unloading closed centrifuge proposed by the present invention reduces the friction of the transmission rod by setting the oil cylinder, protects the transmission rod, reduces the sealing power, and discharges the air in the oil cylinder by installing the filling material, thereby improving the working stability of the oil cylinder.

[0014] 3. The sealing device of the manually unloading closed centrifuge proposed by the present invention has a compact size and a fitting installation by installing the first sealing ring and the second sealing ring, which further ensures the sealing effect. By installing the oil inlet, oil can be added in time, friction is reduced, and the service life of the seal is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation methods of the invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the structure of the present invention.

[0017] Figure 2 It is a diagram inside the sealed box of the present invention.

[0018] Figure 3 It is a schematic diagram of the oil cylinder structure of the present invention.

[0019] Figure 4 It is a schematic diagram of the sealing structure of the present invention.

[0020] In the figure: 1-transmission seat 11-transmission sleeve 12-transmission rod 2-sealing box 21-oil cylinder 211-oil cylinder cover 212-piston rod 213-buffer block 214-piston 215-nut 216-support block 217-filling material 22-dynamic ring 23-static ring 231-static ring sealing ring 24-water seal pipe 25-pressure plate 26-seal 261-first sealing ring 262-second sealing ring 263-slot 264-snap ring 265-oil inlet 27-wear-resistant material. DETAILED DESCRIPTION

[0021] The technical solution of the invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the invention, not all of them. Based on the embodiments of the invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the invention.

[0022] like Figure 1-4As shown, a sealing device for a manually unloading closed centrifuge comprises a transmission seat 1 and a sealing box 2. The transmission seat 1 is arranged on one side of the sealing box 2, has a simple structure, is easy to install, and is convenient for later maintenance. The transmission seat 1 comprises a transmission collar 11 and a transmission rod 12. The transmission rod 12 passes through the sealing box 2, and the transmission seat 1 and the transmission rod 12 are fixedly connected through the transmission collar 11; the sealing box 2 comprises an oil cylinder 21, a dynamic ring 22, a static ring 23, a water seal pipe 24, a pressure plate 25, a sealing member 26 and a wear-resistant material 27. The oil cylinder 21 is arranged on one side of the transmission rod 12. By arranging the oil cylinder 21, the friction of the transmission rod 12 is reduced, the transmission rod 12 is protected, and the sealing power is reduced. The dynamic ring 22 and The stationary ring 23 is arranged on the outer surface of the transmission rod 12. By installing the stationary ring 23, the influence of large errors in the installation and working process on the sealing performance is solved, so that the contact surface load is reduced. A water seal pipe 24 is arranged on one side of the stationary ring 23. By setting the water seal pipe 24, the temperature generated by friction when the transmission rod 12 is working is greatly reduced, and the high temperature is prevented from affecting the sealing effect. A pressure plate 25 is arranged on one side of the water seal pipe 24. A seal 26 is arranged on one side of the oil cylinder 21. The sealing box 2 is set as a two-side structure. The wear-resistant material 27 is filled in the interlayer of the sealing box 2. The oil cylinder 21 includes a cylinder cover 211, a piston rod 212, a buffer block 213, a piston 214, and a nut 21 5. Support block 216 and filling material 217. The cylinder cover 211 is arranged at the upper end of the piston rod 212. A buffer block 213 is connected to one side of the piston rod 212. A piston 214 is arranged at the lower end of the buffer block 213. A nut 215 is arranged on the other side of the piston 214. The support block 216 is arranged at the lower end of the cylinder 21. The filling material 217 is evenly filled in the cylinder 21. By installing the filling material 217, the air in the cylinder 21 is discharged, and the working stability of the cylinder 21 is improved. The stationary ring 23 is provided with a stationary ring sealing ring 231. The stationary ring sealing ring 231 is arranged on the upper surface of the stationary ring 23. The stationary ring 23 is made of magnetic material. The sealing member 26 includes a first The sealing ring 261, the second sealing ring 262, the groove 263, the retaining ring 264 and the oil inlet 265, the first sealing ring 261 is arranged on the outside of the second sealing ring 262, and by installing the first sealing ring 261 and the second sealing ring 262, the size is compact and the installation is fitted, which further ensures the sealing effect, the groove 263 is arranged on the inner surface of the first sealing ring 261, the retaining ring 264 is arranged on the outer surface of the second sealing ring 262, and the oil inlet 265 is arranged on the outer surface of the first sealing ring 261. By installing the oil inlet 265, oil can be added in time, friction is reduced, and the service life of the seal 26 is increased. The diameter of the second sealing ring 262 is smaller than the diameter of the first sealing ring 261.

[0023] In summary: the sealing device of the manually unloading closed centrifuge proposed by the present invention has a simple structure, is easy to install, and is convenient for later maintenance by installing the transmission seat 1 and the sealing box 2. By installing the static ring 23, the influence of large errors on the sealing performance during installation and operation is solved, so that the contact surface load is reduced. By setting the water seal tube 24, the temperature generated by friction when the transmission rod 12 is working is greatly reduced, and at the same time, the high temperature is prevented from affecting the sealing effect. By setting the oil cylinder 21, the friction of the transmission rod 12 is reduced, the transmission rod 12 is protected, and the sealing power is reduced. By installing the filling material 217, the air in the oil cylinder 21 is discharged, and the working stability of the oil cylinder 21 is improved. By installing the first sealing ring 261 and the second sealing ring 262, the size is compact and fits the installation, which further ensures the sealing effect. By installing the oil inlet 265, oil can be added in time, friction is reduced, and the service life of the seal 26 is increased.

[0024] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A sealing device for a manually unloading closed centrifuge, comprising a transmission seat (1) and a sealing box (2), wherein the transmission seat (1) is arranged on one side of the sealing box (2); characterized in that: The transmission seat (1) comprises a transmission sleeve (11) and a transmission rod (12), the transmission rod (12) passes through the sealing box (2), and the transmission seat (1) and the transmission rod (12) are fixedly connected through the transmission sleeve (11); the sealing box (2) comprises an oil cylinder (21), a dynamic ring (22), a static ring (23), a water seal pipe (24), a pressure plate (25), a sealing member (26) and a wear-resistant material (27); the oil cylinder (21) is arranged on one side of the transmission rod (12), the dynamic ring (22) and the static ring (23) are arranged on the outer surface of the transmission rod (12), the static ring (23) is arranged on one side of the water seal pipe (24), the pressure plate (25) is arranged on one side of the water seal pipe (24), the sealing member (26) is arranged on one side of the oil cylinder (21), the sealing box (2) is arranged as a two-side structure, and the wear-resistant material (27) is filled in the interlayer of the sealing box (2); The oil cylinder (21) comprises an oil cylinder cover (211), a piston rod (212), a buffer block (213), a piston (214), a nut (215), a support block (216) and a filling material (217); the oil cylinder cover (211) is arranged at the upper end of the piston rod (212); one side of the piston rod (212) is connected to the buffer block (213); the lower end of the buffer block (213) is provided with a piston (214); the other side of the piston (214) is provided with a nut (215); the support block (216) is arranged at the lower end of the oil cylinder (21); and the filling material (217) is evenly filled in the interior of the oil cylinder (21); The stationary ring (23) is provided with a stationary ring sealing ring (231), and the stationary ring sealing ring (231) is arranged on the upper surface of the stationary ring (23); The sealing member (26) comprises a first sealing ring (261), a second sealing ring (262), a retaining groove (263), a retaining ring (264) and an oil inlet (265); the first sealing ring (261) is arranged outside the second sealing ring (262); the retaining groove (263) is arranged on the inner surface of the first sealing ring (261); the retaining ring (264) is arranged on the outer surface of the second sealing ring (262); and the oil inlet (265) is arranged on the outer surface of the first sealing ring (261); The diameter of the second sealing ring (262) is smaller than the diameter of the first sealing ring (261).

2. The sealing device of a manually unloading closed centrifuge according to claim 1, characterized in that: The stationary ring (23) is made of magnetic material.

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