CN106986190B

CN106986190B - Sealing air seal machinery

Info

Publication number: CN106986190B
Application number: CN201710347047.9A
Authority: CN
Inventors: 陈爱东
Original assignee: Changzhou Kexie Speed Manufacture Co ltd
Current assignee: Changzhou Kexie Speed Manufacture Co ltd
Priority date: 2017-05-16
Filing date: 2017-05-16
Publication date: 2022-12-27
Anticipated expiration: 2037-05-16
Also published as: CN106986190A

Abstract

The invention provides a sealing air seal machinery, which comprises a shell and an impeller, wherein the shell is provided with a sealing ring; a horizontal rotating shaft is designed in the middle of the impeller, the impeller is assembled in the shell, and the rotating shaft and the shell are rotatably assembled; the both ends of shell are equipped with the side cover, processing have in the middle of the side cover with the through-hole of pivot assembly, the through-hole from the outer end to the inner loop through oily packing and labyrinth cover with the assembly of pivot rotary seal, the inboard of side cover be equipped with the clamp plate that the labyrinth cover compressed tightly, the outside design of side cover has access to air inlet between oily packing and the labyrinth cover, the air inlet passes through the trachea and links to each other with high-pressure gas circuit. The air seal is sealed through oily packing, labyrinth cover and the O type circle of clamp plate has realized the three-layer and has sealed for the sealed effect of air seal is better, and the shaft department realizes air-tightly at impeller end cover both sides simultaneously.

Description

Sealing air seal machinery

Technical Field

The invention relates to the technical field of air seal machinery, in particular to a sealing air seal machinery.

Background

The air seal machine is also called as air seal machine, discharge valve, dust discharge valve and star-type discharger. The air shut-off machine is an important device in a pneumatic conveying and ventilating dust removal network, and has the main functions of continuously and timely discharging materials in an unloader or a dust remover and simultaneously preventing external air from entering the unloader or the dust remover. The air-lock valve mainly comprises a shell and an impeller; the rotating shaft of the impeller is rotatably assembled in the shell, and the edge of the impeller and the inner wall of the shell are hermetically assembled. Air seal machinery can be used for even pay-off, and air seal machinery is often used for transporting superfine material, and traditional air seal machinery can have the clearance between the two because rotatable the joining in marriage between impeller border and the shell inner wall, makes superfine material block the operation that influences equipment in the clearance easily like this. In addition, because the blades on the traditional impeller are uniformly and circumferentially distributed on the middle shaft of the impeller, a larger feeding cavity is formed at the inlet position of the impeller and the shell, and the material entering the inlet between the impeller and the shell has uncertainty, so that the material entering the shell and the impeller is not uniform enough, the overall feeding of the air seal device is not uniform enough, and the production efficiency and the effect are influenced. In addition, in the feeding process of the traditional air seal machine, high pressure is often generated in the shell, so that high pressure exists between the inside and the outside of the shell, gas in the shell flows to the outside, and powder materials are easy to leak. And the inside and outside of traditional air seal machinery are linked together and make outside air get into inside the shell easily, cause the pollution to the material of carrying in the shell. When traditional airlock was maintained or was changed the bearing, need dismantle other parts earlier out, the operation is comparatively loaded down with trivial details, and it is comparatively inconvenient to change.

Disclosure of Invention

Aiming at the problems, the invention provides the air seal closer which is simple in structure, uniform in feeding and not easy to leak materials.

The technical scheme adopted by the invention for solving the technical problem is as follows: the air seal airlock comprises a shell and an impeller; a horizontal rotating shaft is arranged in the middle of the impeller, the impeller is assembled in the shell, the rotating shaft and the shell are rotatably assembled, a feeding hole is formed in the upper end of the shell, a discharging hole is formed in the lower end of the shell, a motor is arranged on the side edge of the shell, and the end part of the motor is in transmission connection with the rotating shaft of the impeller through a chain wheel and a chain; the two ends of the shell are assembled with side covers, a through hole assembled with the rotating shaft is machined in the middle of each side cover, the through hole is assembled with the rotating shaft in a rotating and sealing mode sequentially from the outer end to the inner end through an oil-immersed packing and a labyrinth sleeve, a pressing plate for pressing the labyrinth sleeve is assembled on the inner side of each side cover, the middle of each pressing plate is assembled with the rotating shaft in a rotating and sealing mode through an O-shaped ring, and the outer side of each pressing plate is assembled with the inner side of each side cover in a sealing mode through the O-shaped ring; and an air inlet end communicated between the oil immersion packing and the labyrinth sleeve is designed on the outer side of the side cover, and the air inlet end is connected with a high-pressure air path through an air pipe.

Preferably, the impeller is sequentially provided with sub-blades perpendicular to the rotating shaft from left to right along the horizontal rotating shaft, shaft blades are uniformly distributed between any two sub-blades along the circumferential direction of the rotating shaft, and the horizontally adjacent shaft blades are staggered with each other.

Preferably, a horizontal strip-shaped air return opening is processed at the front side of the shell, and an air return shell which is used for communicating the inside of the air return opening with the outside of the shell is assembled on the air return opening.

Preferably, a pressure regulating valve is assembled on the front side of the shell, the high-pressure gas path is connected with the gas inlet end through the pressure regulating valve, and the high-pressure gas path is connected to the pressure regulating valve through a drying module.

Preferably, the outer side of the side cover is connected with an installation ring coaxial with the side cover through more than two support rods, the installation ring is fixedly connected with a bearing sleeve, and the bearing sleeve is assembled with the rotating shaft through a bearing; the supporting rods are circumferentially and uniformly distributed relative to the rotating shaft.

Preferably, the bearing cover is assembled on the outer side of the bearing sleeve, and framework oil seals are respectively assembled on two sides of the bearing.

Preferably, a spring gland is assembled on the inner side of the mounting ring, a spring is connected to the inner side of the spring gland, and a spring retainer ring tightly propped against the outer side of the oil immersion packing is connected to the inner side of the spring; the rotating shaft penetrates through the spring gland, the spring and the spring retainer ring.

The invention has the beneficial effects that: this air seal machinery passes through oily packing, labyrinth cover and the O type circle of clamp plate has realized three-layer seal for air seal machinery's sealed effect is better, simultaneously high-pressure gas circuit passes through the inlet end to labyrinth cover position lets in high-pressure gas, and impeller end cover both sides axle head department realizes airtight like this, cooperation O type circle, and spring compensation packing compression seal, the three sealing form of different properties, the seal is good, to superfine powder, the material that mobility is good, the permeability is strong, the big occasion of this air seal machinery inside atmospheric pressure, the occasion of malleation transport ensures not to leak the material, changes the single sealing form of tradition. Meanwhile, due to the adoption of non-contact air sealing and compensation type packing compression sealing, the equipment is basically maintenance-free, and great convenience is brought to a user.

Drawings

Fig. 1 is a schematic perspective view of the sealing air seal machinery.

Fig. 2 is a schematic sectional structure view in the three-dimensional direction of the sealing air seal machinery.

Fig. 3 is a perspective view of the impeller.

Fig. 4 is a schematic perspective view of a cross section of the edge cover.

Detailed Description

The invention is further illustrated by the following examples:

as shown in the embodiment of fig. 1 and 2, the sealing air seal machinery comprises a shell 1, an impeller 2; the middle of the impeller 2 is designed with a horizontal rotating shaft 21, the impeller 2 is assembled in the shell 1, and the rotating shaft 21 and the shell are rotatably assembled. The upper end design of shell 1 has the feed inlet, and the lower extreme design of shell 1 has the discharge gate, and feed inlet, discharge gate about shell 1 pass through the flange and link to each other with other production facility. The material to be conveyed enters from the upper feed inlet and is output from the lower discharge outlet.

The side of the shell 1 is provided with a motor 3, and the end part of the motor 3 is in transmission connection with a rotating shaft 21 of the impeller 2 through a chain wheel and a chain; synchronous conveying can be realized by the chain wheel and chain conveying structure, so that the feeding of the impeller in the air seal machine is more uniform. The two ends of the shell 1 are provided with side covers 4, the middle of each side cover 4 is provided with a through hole assembled with the rotating shaft 21, the through hole is assembled with the rotating shaft 21 in a rotating and sealing manner sequentially through an oil-immersed packing 5 and a labyrinth sleeve 6 from the outer end to the inner end, the inner side of each side cover 4 is provided with a pressing plate 61 for pressing the labyrinth sleeve 6 tightly, the middle of each pressing plate 61 is assembled with the rotating shaft 21 in a rotating and sealing manner through an O-shaped ring 7, and the outer side of each pressing plate 61 is assembled with the inner side of each side cover 4 in a sealing manner through the O-shaped ring 7; the outer side of the side cover 4 is provided with an air inlet end 41 leading to the position of the labyrinth sleeve 6, and the air inlet end 41 is connected with a high-pressure air path through an air pipe.

This leakproofness air seal ware through oily packing, labyrinth cover and the O type circle of clamp plate has realized three-layer seal for air seal ware's sealed effect is better, simultaneously high-pressure gas circuit passes through the inlet end to 6 positions of labyrinth cover let in high-pressure gas, high-pressure gas can flow from labyrinth cover 6 both sides, and the high-pressure gas that flows to 6 outsides of labyrinth cover can be followed oily packing 5 and outwards blown out, and the high-pressure gas that flows to 6 inboard labyrinth cover can be followed clamp plate 61 parts and blown into to 1 inside of shell, like this impeller 2 end cover both sides axle head department realizes airtight, can prevent that thinner powder from flowing from 1 inside of shell, also can prevent that the outside dust of air seal ware from 2 both sides axle heads of impeller from getting into in the shell 1. The air sealing structure is matched with the O-shaped ring 7, the elastic compensation packing is compressed and sealed, three sealing modes with different properties are adopted, the air sealing structure is good in airtightness, and for materials with ultrafine powder, good fluidity and strong permeability, the air pressure in the air seal is high, the air seal is guaranteed not to leak in the positive pressure conveying mode, and the traditional single sealing mode is changed. Meanwhile, due to the adoption of non-contact air sealing and compensation type packing compression sealing, the equipment is basically maintenance-free, and great convenience is brought to users.

As shown in fig. 2 and 3, the impeller 2 is sequentially designed with the sub-blades 22 perpendicular to the rotating shaft 21 from left to right along the horizontal rotating shaft 21, the shaft blades 23 are uniformly distributed between any two sub-blades 22 along the circumferential direction of the rotating shaft 21, and the horizontally adjacent shaft blades 23 are staggered with each other. Due to the design, materials flowing in from a feed inlet at the upper part of the shell 1 firstly enter the material distribution cavity between the material distribution blade 22 and the shaft blade 23, due to the staggered design of the shaft blade 23, the material distribution cavity is also arranged in a staggered mode, so that the materials entering from the feed inlet at the upper part are firstly dispersed into the material distribution cavities, when in feeding, the uneven feeding is mainly caused by the transverse blades of the impeller 2, the materials falling into the feed inlet are neglected, in the structure, the materials falling into the large impeller 2 at each time can respectively enter the staggered material distribution cavities, and due to the staggered reason, the adjacent material cavities can not synchronously discharge materials, so that the fluctuation of unit discharging can be greatly reduced. So that the air seal machinery can discharge more evenly.

When the air conditioner is specifically designed, as shown in fig. 1, a horizontal bar-shaped air return inlet is processed at the front side of the shell 1, an air return shell 11 which communicates the inside of the air return inlet with the outside of the shell 1 is assembled on the air return inlet, an air outlet is designed at the upper part of the air return shell 11, the impeller 2 in the shell 1 rotates clockwise, the air return shell 11 of the air return inlet is communicated with the position of the impeller 2 after discharging, at the moment, the air return shell 11 can balance the pressure in the impeller 2, and the pressure difference between the impeller 2 and the position of the feed inlet when the impeller 2 rotates to the feed inlet is prevented, so that the pressure difference can be prevented from causing the rapid and slow feeding of materials at the position of the feed inlet, and the feeding of the air conditioner is more uniform.

In specific design, as shown in fig. 1, a pressure regulating valve 12 is assembled on the front side of the housing 1, the high-pressure air path is connected to the air inlet 41 through the pressure regulating valve 12, and the high-pressure air path is connected to the pressure regulating valve 12 through a drying module. Through the air-vent valve 12, a user can conveniently check the air inlet pressure of the air-vent valve and conveniently control the pressure difference between the inside and the outside of the air seal machine, and the design of the drying module ensures that the air entering the shell 1 is in a dry state, so that the air seal machine cannot cause material pollution in the feeding process, and the using effect is better.

In specific design, as shown in fig. 2 and 4, an installation ring 43 coaxial with the side cover 4 is axially connected to the outer side of the side cover 4 through more than two support rods 42, a bearing sleeve 44 is fixedly connected to the installation ring 43, and the bearing sleeve 44 is assembled with the rotating shaft 21 through a bearing 8; the supporting rods 42 are circumferentially and uniformly distributed relative to the rotating shaft 21. Thus, in the air-lock, the main rotating part bearing 8 is far away from the shell 1 and the side cover 4, and the side cover 4 is only contacted with the rotating shaft 21 through the sealing element, so that the main stress of the impeller 2 during rotation is concentrated on the bearing 8, and the sealing element of the air-lock is stressed evenly, has less abrasion and has longer service life. At the same time, since the rotating member bearing 8 is extended outward through the support rod 42 and the mounting ring 43, it is easier to replace the bearing 8 when the bearing 8 is worn, and to maintain or replace the bearing 8. The bearing 8 can be replaced by only ejecting the bearing seat by using a bolt without removing other parts. And the maintenance is more convenient.

In specific design, as shown in fig. 2, the bearing cover 44 is fitted with a bearing gland 45 on the outer side, and the bearings 8 are fitted with frame oil seals 81 on both sides. A skeleton oil blanket 81 assembles on bearing cover 45, a skeleton oil blanket 81 assembles in the bearing housing 44, two skeleton oil blankets 81 can be in with lubricating oil seal in the bearing 8, make the frictional force of the during operation of bearing 8 is littleer, and life is longer.

In specific design, as shown in fig. 2, a spring gland 48 is assembled on the inner side of the mounting ring 43, a spring 46 is connected to the inner side of the spring gland 48, and a spring retainer ring 47 tightly abutting against the outer side of the oil-immersed packing 5 is connected to the inner side of the spring 46; the rotating shaft 21 passes through the spring gland 48, the spring 46 and the spring retainer 47. Spring gland 48, spring 46, spring retainer ring 47 with pivot 21 clearance fit, at this air seal machinery during operation, spring gland 48 with collar 43 fixed connection, spring 46 is in the state that compresses tightly, oily packing 5 uses the elastic material preparation, spring retainer ring 47 pushes up oily packing 5, and at this moment oily packing 5 produces elastic deformation, can make sealed effect is better between side cover 4 and the pivot 21.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A sealing air seal machinery comprises a shell (1) and an impeller (2); a horizontal rotating shaft (21) is designed in the middle of the impeller (2), the impeller (2) is assembled in the shell (1), the rotating shaft (21) is rotatably assembled with the shell, a feeding hole is formed in the upper end of the shell (1), a discharging hole is formed in the lower end of the shell (1), a motor (3) is designed on the side edge of the shell (1), and the end part of the motor (3) is in transmission connection with the rotating shaft (21) of the impeller (2) through a chain wheel and a chain; the method is characterized in that: the oil seal type sealing device is characterized in that side covers (4) are assembled at two ends of the shell (1), a through hole assembled with the rotating shaft (21) is machined in the middle of each side cover (4), the through hole sequentially passes through an oil-immersed packing (5) and a labyrinth sleeve (6) from the outer end to the inner end to be assembled with the rotating shaft (21) in a rotating and sealing mode, a pressing plate (61) pressing the labyrinth sleeve (6) tightly is assembled on the inner side of each side cover (4), the middle of each pressing plate (61) is assembled with the rotating shaft (21) in a rotating and sealing mode through an O-shaped ring (7), and the outer side of each pressing plate (61) is assembled with the inner side of each side cover (4) in a sealing mode through the O-shaped ring (7); and an air inlet end (41) leading to the position of the labyrinth sleeve (6) is designed on the outer side of the side cover (4), and the air inlet end (41) is connected with a high-pressure air passage through an air pipe.

2. The sealing air seal according to claim 1, wherein: impeller (2) have from left to right along horizontally pivot (21) in proper order the design have the perpendicular to branch blade (22) of pivot (21), arbitrary two divide between the blade (22) along pivot (21) circumference equipartition has axle blade (23), and the level is misplaced each other to adjacent axle blade (23).

3. The sealable air seal of claim 1, wherein: the air return device is characterized in that a horizontal strip-shaped air return opening is processed on the front side of the shell (1), and an air return shell (11) which is used for communicating the inside of the air return opening with the outside of the shell (1) is assembled on the air return opening.

4. The sealable air seal of claim 1, wherein: the front side of the shell (1) is provided with a pressure regulating valve (12), the high-pressure gas circuit is connected with the air inlet end (41) through the pressure regulating valve (12), and the high-pressure gas circuit is connected into the pressure regulating valve (12) through a drying module.

5. The sealable air seal of claim 1, wherein: the outer side of the side cover (4) is connected with an installation ring (43) coaxial with the side cover (4) through more than two support rods (42), the installation ring (43) is fixedly connected with a bearing sleeve (44), and the bearing sleeve (44) is assembled with the rotating shaft (21) through a bearing (8); the supporting rods (42) are circumferentially and uniformly distributed relative to the rotating shaft (21).

6. The sealable air seal of claim 5, wherein: the outside of bearing housing (44) is equipped with bearing gland (45), the both sides of bearing (8) are equipped with skeleton oil blanket (81) respectively.

7. The sealable air seal of claim 5, wherein: a spring gland (48) is assembled on the inner side of the mounting ring (43), a spring (46) is connected to the inner side of the spring gland (48), and a spring retainer ring (47) which is tightly pressed against the outer side of the oil-immersed packing (5) is connected to the inner side of the spring (46); the rotating shaft (21) penetrates through the spring gland (48), the spring (46) and the spring retainer ring (47).