CN218422642U

CN218422642U - Hollow shaft high-temperature high-pressure ventilation sealing device

Info

Publication number: CN218422642U
Application number: CN202221792160.0U
Authority: CN
Inventors: 李连星; 洪峰; 谢尚杰; 桂永峰
Original assignee: Zhejiang Hengfengtai Mixing Technology Co ltd; Hengfengtai Precision Machinery Co ltd
Current assignee: Zhejiang Hengfengtai Mixing Technology Co ltd; Hengfengtai Precision Machinery Co ltd
Priority date: 2022-07-13
Filing date: 2022-07-13
Publication date: 2023-02-03
Anticipated expiration: 2032-07-13

Abstract

The utility model discloses a quill shaft high temperature high pressure sealing device that ventilates, concretely relates to agitating unit technical field, it is including ventilating the takeover, it locates on agitated vessel's the quill shaft lateral wall to ventilate the takeover, it ventilates to be equipped with between takeover and the quill shaft and ventilates the ring, it is equipped with the through-hole that can supply the gas to pass through to ventilate the ring, it all is equipped with the packing respectively to ventilate to encircle the upper and lower extreme, the upper end of packing is equipped with mechanical seal. The device meets the requirement of realizing high-temperature and high-pressure ventilation of the hollow shaft by the gas-liquid-solid three-phase stirring equipment, can be suitable for occasions with the ventilation temperature of less than or equal to 350 degrees and the ventilation pressure of less than or equal to 6.0Mpa, and has simple structure and long service life.

Description

Hollow shaft high-temperature high-pressure ventilation sealing device

Technical Field

The utility model relates to an agitating unit technical field, concretely relates to quill shaft high temperature high pressure sealing device that ventilates.

Background

In the chemical industry, the smelting industry and the lithium battery new energy industry, gas-liquid-solid three-phase materials need to be aerated into a tank for reaction by stirring equipment, such as a high-pressure kettle, an oxidation reaction kettle, an extraction kettle, an iron removal kettle and the like, and two ways are adopted for aeration, namely, gas is aerated from the upper part or the side part of the kettle or the tank by utilizing an aeration pipeline form, and then a gas distributor is used for dispersing; the hollow shaft at the top of the stirring equipment is used for ventilation; in the first mode, the vent pipeline and the gas distributor are blocked frequently in the use process, so that the regular shutdown cleaning and maintenance is caused, the later maintenance cost is high, and the production capacity is seriously influenced; the hollow shaft ventilation at the top of the mode II is realized by ventilating with a rotary joint from the back of a hollow shaft speed reducer, a check valve and an air distribution cover are designed at the bottom of the shaft, the requirements of ventilation, dispersion, mixing and reaction are met by stirring equipment, a plurality of parts can be added to cause high investment cost, high-temperature gas cannot be introduced due to the fact that the introduced gas passes through the hollow shaft of the speed reducer, the temperature is not easy to exceed 80 degrees, the ventilation pressure is not easy to exceed 1.0Mpa, the temperature of the speed reducer is increased due to overhigh temperature, a bearing and an oil seal are damaged, the service life of the speed reducer is greatly reduced, and the service life of the rotary joint is shortened due to overhigh pressure.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a quill shaft high temperature high pressure sealing device that ventilates.

The hollow shaft high-temperature high-pressure ventilation sealing device comprises a ventilation connecting pipe, wherein the ventilation connecting pipe is arranged on the side wall of a hollow shaft of a stirring device, a ventilation ring is arranged between the ventilation connecting pipe and the hollow shaft, the ventilation ring is provided with a through hole through which gas can pass, the upper end and the lower end of the ventilation ring are respectively provided with a filler seal, and the upper end of the filler seal is provided with a mechanical seal.

And a sealing cylinder is arranged on the outer side of the packing seal and is fixed on the surface of the hollow shaft by an upper flange and a lower flange.

And a cooling jacket is arranged on the outer side of the sealing cylinder, and a cooling liquid inlet and a cooling liquid outlet are arranged on the cooling jacket.

The cooling liquid inlet is arranged at the end close to the lower flange, and the cooling liquid outlet is arranged at the end close to the upper flange.

The packing seal comprises a packing and a packing gland, wherein the packing gland tightly presses the packing and is fixed on the upper flange and the lower flange through bolts.

The packing is a synthetic fiber packing.

And an oil injection ring is arranged on the packing, and the oil injection ring is connected with an oil injection nipple.

An O-shaped ring is arranged between the packing gland and the sealing cylinder body.

And a sealing gasket is arranged between the packing gland and the mechanical seal.

The mechanical seal is a cartridge type single-end-face mechanical seal or a cartridge type double-end-face mechanical seal.

The utility model has the advantages that: the utility model provides a requirement that gas-liquid-solid three-phase agitated vessel realized quill shaft high temperature high pressure and ventilates, ventilate through middle part quill shaft, adopt the high temperature resistant ability of the sealed improving device of filler, adopt mechanical seal improving device's high pressure resistant ability, can be applicable to the temperature of ventilating and be less than or equal to 350, the occasion of ventilating pressure less than or equal to 6.0Mpa, simple structure, long service life.

Drawings

Fig. 1 is a cross-sectional structural view of an embodiment of the present invention.

Wherein 1, mechanical sealing is carried out; 2, a bolt; 3, a gasket; 4, a nut; 5, a packing gland is arranged; 6, an upper flange; 7, sealing the cylinder; 8, a cooling jacket; 9, a cooling liquid outlet; 10, a ventilation connecting pipe; 11, lower flange; 12, packing; 13, an O-ring; 14, a lower packing gland; 15, oiling a nozzle; 16, a filler ring; 17, a vent ring; 18, a coolant inlet; 19, a sealing gasket; 20, a hollow shaft.

Detailed Description

The embodiments of the present invention will be further explained with reference to the drawings.

As shown in the figure, the high-temperature and high-pressure ventilation sealing device for the hollow shaft comprises a ventilation connecting pipe 10, wherein the ventilation connecting pipe 10 is arranged on the side wall of a hollow shaft 20 of a stirring device, and the drift diameter of the ventilation connecting pipe 10 is calculated according to ventilation volume and ventilation pressure. A ventilation ring 17 is arranged between the ventilation connecting pipe 10 and the hollow shaft 20, the ventilation ring 17 is provided with a through hole through which gas can pass, the upper end and the lower end of the ventilation ring 17 are respectively provided with a packing seal, and the upper end of the packing seal is provided with a mechanical seal 1. And a sealing cylinder 7 is arranged outside the packing seal, and the sealing cylinder 7 is fixed on the surface of the hollow shaft 20 by an upper flange 6 and a lower flange 11. The packing seal comprises a packing 12, an upper packing gland 5 and a lower packing gland 14, wherein the upper packing gland 5 compresses the packing 12 and is fixed on an upper flange 6 through a bolt 3, and the lower packing gland 14 compresses the packing 12 and is fixed on a lower flange 11 through the bolt 3. The packing 12 is provided with an oil injection ring 16, the oil injection ring 16 is connected with an oil injection connector 15, lubricating oil is injected from the oil injection connector for lubricating the packing, the packing does not need to be frequently replaced, and the service life is prolonged. In this embodiment, the packing 12 is a synthetic fiber packing, has good wear-resistant and temperature-resistant effects, and can bear not more than 3.0Mpa by filling multiple layers of packing.

In this embodiment, a cooling jacket 8 is disposed outside the sealing cylinder 7, a cooling liquid inlet 18 and a cooling liquid outlet 9 are disposed on the cooling jacket 8, the cooling liquid inlet 18 is disposed at an end close to the lower flange 11, and the cooling liquid outlet 9 is disposed at an end close to the upper flange 6. The cooling liquid enters from the cooling liquid inlet and then goes out from the cooling liquid outlet, and continuous circulation and effective cooling are realized.

In this embodiment, an O-ring 13 is disposed between the lower packing gland 14 and the cylinder body of the sealing cylinder 7, and a sealing gasket 19 is disposed between the upper packing gland 5 and the mechanical seal 1, so as to ensure the sealing effect.

In this embodiment, the mechanical seal 1 is a cartridge type single-end-face mechanical seal or a cartridge type double-end-face mechanical seal. The integrated single-end-face mechanical seal or the integrated double-end-face mechanical seal is the prior art, and is not described herein any more, because the packing seal of the device adopts multilayer synthetic fiber packing, the self pressure can meet 3.0Mpa or less, when the ventilation pressure is 3.5Mpa or less, the integrated single-end-face mechanical seal is selected for the mechanical seal, and when the ventilation pressure is 3.5Mpa or less and 6Mpa or less, the integrated double-end-face mechanical seal is selected for the mechanical seal; because the large-flow circulating cooling jacket is arranged outside the filler seal of the device, the device has good cooling effect, when the aeration temperature is less than or equal to 200 ℃, the mechanical seal is not provided with the cooling jacket, and when the aeration temperature is more than 200 ℃ and less than or equal to 350 ℃, the mechanical seal is provided with the cooling jacket;

the device can meet the working condition that the temperature of gas such as steam exceeds 80 degrees, is suitable for occasions with the ventilation temperature of less than or equal to 350 degrees and the ventilation pressure of less than or equal to 6.0Mpa, has simple structure and long service life, and can be widely applied to the stirring equipment for gas-liquid-solid three-phase materials in the chemical industry, the smelting industry and the lithium battery new energy industry.

The examples should not be construed as limiting the invention, and any non-inventive modifications based on the spirit of the invention should be construed as within the scope of the invention.

Claims

1. The hollow shaft high-temperature high-pressure ventilation sealing device is characterized in that: the air-permeable stirring device comprises an air-permeable connecting pipe (10), wherein the air-permeable connecting pipe (10) is arranged on the side wall of a hollow shaft (20) of the stirring equipment, an air-permeable ring (17) is arranged between the air-permeable connecting pipe (10) and the hollow shaft (20), the air-permeable ring (17) is provided with a through hole through which air can pass, the upper end and the lower end of the air-permeable ring (17) are respectively provided with a packing seal, and the upper end of the packing seal is provided with a mechanical seal (1).

2. The hollow shaft high temperature and high pressure vent seal apparatus of claim 1, wherein: and a sealing cylinder (7) is arranged on the outer side of the packing seal, and the sealing cylinder (7) is fixed on the surface of the hollow shaft (20) by an upper flange (6) and a lower flange (11).

3. The hollow shaft high-temperature high-pressure ventilation sealing device according to claim 2, characterized in that: and a cooling jacket (8) is arranged on the outer side of the sealing cylinder (7), and a cooling liquid inlet (18) and a cooling liquid outlet (9) are arranged on the cooling jacket (8).

4. The hollow shaft high temperature and high pressure vent seal of claim 3, wherein: the cooling liquid inlet (18) is arranged at the end close to the lower flange (11), and the cooling liquid outlet (9) is arranged at the end close to the upper flange (6).

5. The hollow shaft high temperature and high pressure vent seal of claim 2, wherein: the packing seal comprises a packing (12) and a packing gland, wherein the packing gland tightly presses the packing (12) and is fixed on the upper flange and the lower flange through bolts (2).

6. The hollow shaft high temperature and high pressure vent seal apparatus of claim 5, wherein: the packing (12) is a synthetic fiber packing.

7. The hollow shaft high temperature and high pressure vent seal apparatus of claim 5, wherein: an oil injection ring (16) is arranged on the packing (12), and the oil injection ring (16) is connected with an oil injection nipple (15).

8. The hollow shaft high temperature and high pressure vent seal apparatus of claim 5, wherein: an O-shaped ring (13) is arranged between the packing gland and the cylinder body of the sealing cylinder (7).

9. The hollow shaft high temperature and high pressure vent seal apparatus of claim 5, wherein: and a sealing gasket (19) is arranged between the packing gland and the mechanical seal (1).

10. The hollow shaft high temperature and high pressure vent seal apparatus of claim 1, wherein: the mechanical seal (1) is a cartridge type single-end-face mechanical seal or a cartridge type double-end-face mechanical seal.