CN210978726U

CN210978726U - Shaft sealing structure for rotary valve

Info

Publication number: CN210978726U
Application number: CN201921978938.5U
Authority: CN
Inventors: 王顺宝; 徐顺秒; 刘进
Original assignee: Hangzhou Haizhou Environmental Equipment Co ltd
Current assignee: Hangzhou Haizhou Environmental Equipment Co ltd
Priority date: 2019-11-15
Filing date: 2019-11-15
Publication date: 2020-07-10
Anticipated expiration: 2029-11-15

Abstract

The utility model relates to the technical field of rotary valves, in particular to an axial sealing structure for a rotary valve, which comprises a rotary valve main body, a frame, a heat exchange and heat storage box body, a sealing mechanism and a transmission mechanism, wherein an air inlet pipe is arranged at the left side of the rotary valve main body, the top of the rotary valve main body is connected with the bottom of the heat exchange and heat storage box body through a connecting pipe, the frame is arranged at the bottom of the rotary valve main body, the sealing mechanism is arranged at the center of the bottom of the rotary valve main body, an exhaust pipe is arranged at the right side of the sealing mechanism, a hollow rotating shaft is arranged in the sealing mechanism, an air inlet is arranged on the hollow rotating shaft, an axial seal is arranged on the hollow rotating shaft and close to the peripheral sleeve of the air inlet, the whole device has simple structure, so that high, the sealing device has the advantages of high-efficiency sealing, long service life and the like, and has higher stability and practicability and certain popularization value.

Description

Shaft sealing structure for rotary valve

Technical Field

The utility model relates to a rotary valve technical field specifically is a shaft seal structure for rotary valve.

Background

The hollow rotating shaft of the rotary valve penetrates inside and outside the rotary valve body, so that a circumferential gap exists between the hollow rotating shaft and the rotary valve body, a medium in the rotary valve body leaks outwards through the gap, and if the pressure in the rotary valve body is lower than the atmospheric pressure, air leaks into the rotary valve body, so that an axial sealing structure for the rotary valve is needed to improve the problems.

Disclosure of Invention

An object of the utility model is to provide an axle seal structure for rotary valve to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a shaft sealing structure for a rotary valve comprises a rotary valve main body, a frame, a heat exchange and heat storage box body, a sealing mechanism and a transmission mechanism, wherein an air inlet pipe is installed at the left side of the rotary valve main body, the top of the rotary valve main body is connected to the bottom of the heat exchange and heat storage box body through a connecting pipe, the bottom of the rotary valve main body is provided with the frame, the sealing mechanism is installed at the bottom center of the rotary valve main body, an exhaust pipe is installed at the right side of the sealing mechanism, a hollow rotating shaft is installed inside the sealing mechanism, an air inlet is formed in the hollow rotating shaft, a shaft seal is sleeved on the periphery of the air inlet in the hollow rotating shaft, sealing rings are fixedly installed at the upper end and the lower end of the shaft seal through pressing strips, the transmission mechanism is installed at the bottom, and a high-pressure air inlet pipe is arranged on the left side of the sealing mechanism.

Preferably, the tapered roller bearing is arranged at the periphery of the hollow rotating shaft at the bottom of the inner wall of the sealing mechanism.

Preferably, the motor is of a type WBE 1285.

Preferably, the bottom end of the hollow rotating shaft is connected with the top of the motor through mechanical seal.

Preferably, one end of the high-pressure air inlet pipe is positioned inside the sealing mechanism and connected to one side of the shaft seal.

Preferably, the press strips are arranged in two groups, and the press strips are fixedly arranged at the upper end and the lower end of the shaft seal through bolts.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses in, the sealing washer of layering is fixed about the shaft seal through setting up is convenient for seal between sealed and the hollow rotating shaft of counter shaft, and the high-pressure intake pipe of being convenient for lets in high-pressure gas and gets into hollow rotating shaft by going into the gas port in, and subsequent high-pressure seal of being convenient for makes high-pressure medium decompress gradually through sealed in-process, reduces medium pressure differential until pressure differential is zero to reach sealed effect, simple structure and convenient sealed use.

2. The utility model discloses in, have through the mechanical seal who sets up to let out the advantage such as leakage quantity is few and longe-lived, hollow rotating shaft runs through inside and outside the rotary valve main part, like this, has a circumference clearance between hollow rotating shaft and the rotary valve main part, and the medium in the rotary valve main part outwards leaks through this clearance, if rotary valve main part internal pressure is less than atmospheric pressure, then the air leaks in to the rotary valve main part, through mechanical seal, simple structure and be convenient for seal and prevent to leak.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a schematic structural view of the utility model A-1;

fig. 3 is a schematic view of the shaft sealing structure of the present invention.

In the figure: the device comprises a rotary valve main body 1, a frame 101, an air inlet pipe 2, a connecting pipe 3, a heat exchange and heat storage box 4, a sealing mechanism 5, a transmission mechanism 6, a motor 7, a mechanical seal 8, a hollow rotating shaft 9, an air inlet 10, a high-pressure air inlet pipe 11, a shaft seal 12, a pressing strip 13, a sealing ring 14 and an exhaust pipe 15.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a shaft sealing structure for a rotary valve comprises a rotary valve main body 1, a frame 101, a heat exchange and heat storage box body 4, a sealing mechanism 5 and a transmission mechanism 6, wherein an air inlet pipe 2 is installed on the left side of the rotary valve main body 1, the top of the rotary valve main body 1 is connected to the bottom of the heat exchange and heat storage box body 4 through a connecting pipe 3, the frame 101 is installed at the bottom of the rotary valve main body 1, the sealing mechanism 5 is installed at the center of the bottom of the rotary valve main body 1, an exhaust pipe 15 is installed on the right side of the sealing mechanism 5, a hollow rotating shaft 9 is installed inside the sealing mechanism 5, the bottom end of the hollow rotating shaft 9 is connected with the top of a motor 7 through a mechanical seal 8, a tapered roller bearing is installed at the bottom of the inner wall of the sealing mechanism 5 and positioned at the periphery of the hollow rotating shaft 9, an air inlet 10 is formed in the, the press strips 13 are provided with two groups, the press strips 13 are fixedly arranged at the upper end and the lower end of a shaft seal 12 through bolts, a transmission mechanism 6 is arranged at the bottom of the seal mechanism 5, a mechanical seal 8 is arranged in the transmission mechanism 6, the mechanical seal 8 has the advantages of small leakage amount, long service life and the like, and a hollow rotating shaft 9 penetrates through the inside and the outside of a rotary valve main body 1, so that a circumferential gap exists between the hollow rotating shaft 9 and the rotary valve main body 1, a medium in the rotary valve main body 1 leaks outwards through the gap, if the pressure in the rotary valve main body 1 is lower than the atmospheric pressure, air leaks into the rotary valve main body, the seal is sealed through the mechanical seal 8, the structure is simple, the seal is convenient to seal and prevent leakage, a motor 7 is arranged at the bottom of the transmission mechanism 6, the motor 7 is WBE1285 in type, a high-pressure air inlet pipe 11 is arranged at the left, sealing washer 14 through the fixed sealing washer of layering 13 about the shaft seal 12 that sets up is convenient for seal between shaft seal 12 and the hollow rotating shaft 9, be convenient for high-pressure intake pipe 11 lets in high-pressure gas by going into in the gas port 10 gets into hollow rotating shaft 9, subsequent high-pressure seal of being convenient for, make high-pressure medium decompress gradually through sealed in-process, reduce medium pressure differential until pressure differential is zero, thereby reach sealed effect, simple structure and convenient sealed use, the overall structure is simple, make high-pressure medium decompress gradually through sealed in-process, reduce medium pressure differential until pressure differential is zero, thereby reach sealed effect, have advantages such as high-efficient sealed and longe-lived, and stability and practicality are higher, certain spreading value has.

The utility model discloses work flow: when in use, the sealing ring 14 fixed by the upper and lower pressing strips 13 of the shaft seal 12 is convenient for sealing between the shaft seal 12 and the hollow rotating shaft 9, the high-pressure air inlet pipe 11 is convenient for introducing high-pressure air into the hollow rotating shaft 9 from the air inlet 10, the subsequent high-pressure sealing is convenient, the high-pressure medium is gradually decompressed in the sealing process, and the medium pressure difference is reduced until the medium pressure difference is zero, thereby achieving the sealing effect, the structure is simple and the sealing use is convenient, the hollow rotating shaft 9 penetrates the inside and the outside of the rotating valve main body 1 through the mechanical seal 8, thus, a circumferential gap is formed between the hollow rotating shaft 9 and the rotating valve main body 1, the medium in the rotating valve main body 1 is leaked outwards through the gap, if the pressure in the rotating valve main body 1 is lower than the atmospheric pressure, the air is leaked into the rotating valve main body, simple structure and be convenient for sealed prevent to leak, overall device simple structure makes high-pressure medium decompress gradually through sealed in-process, reduces medium pressure differential until pressure differential is zero to reach sealed effect, have high-efficient sealed and advantage such as longe-lived, and stability and practicality are higher, have certain spreading value.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a shaft seal structure for rotary valve, includes rotary valve main part (1), frame (101), heat exchange heat accumulation box (4) and sealing mechanism (5) and drive mechanism (6), its characterized in that: intake pipe (2) are installed in the left side of rotary valve main part (1), the top of rotary valve main part (1) is connected in the bottom of heat exchange and heat storage box (4) through connecting pipe (3), bottom installation frame (101) of rotary valve main part (1), sealing mechanism (5) is installed at the bottom center department of rotary valve main part (1), blast pipe (15) are installed on the right side of sealing mechanism (5), the internally mounted of sealing mechanism (5) has hollow rotating shaft (9), income gas port (10) have been seted up on hollow rotating shaft (9), press close to the peripheral cover of income gas port (10) on hollow rotating shaft (9) and be equipped with shaft seal (12), there are sealing washer (14) at the upper and lower both ends of shaft seal (12) through layering (13) fixed mounting, drive mechanism (6) are installed to the bottom of sealing mechanism (5), the inside of drive mechanism (6) is equipped with mechanical seal (8), motor (7) are installed to the bottom of drive mechanism (6), high-pressure intake pipe (11) are installed in the left side of sealing mechanism (5).

2. A shaft seal structure for a rotary valve according to claim 1, wherein: the bottom of the inner wall of the sealing mechanism (5) is positioned at the periphery of the hollow rotating shaft (9) and is provided with a tapered roller bearing.

3. A shaft seal structure for a rotary valve according to claim 1, wherein: the model of the motor (7) is WBE 1285.

4. A shaft seal structure for a rotary valve according to claim 1, wherein: the bottom end of the hollow rotating shaft (9) is connected with the top of the motor (7) through a mechanical seal (8).

5. A shaft seal structure for a rotary valve according to claim 1, wherein: one end of the high-pressure air inlet pipe (11) is positioned inside the sealing mechanism (5) and connected to one side of the shaft seal (12).

6. A shaft seal structure for a rotary valve according to claim 1, wherein: the press strips (13) are arranged in two groups, and the press strips (13) are fixedly arranged at the upper end and the lower end of the shaft seal (12) through bolts.