CN213966450U

CN213966450U - Stirring sealing structure of wet mixing granulator

Info

Publication number: CN213966450U
Application number: CN202022938387.9U
Authority: CN
Inventors: 杜松; 田雨
Original assignee: Chongqing Kexu Pharmaceutical Machinery Equipment Manufacturing Co ltd
Current assignee: Chongqing Kexu Pharmaceutical Machinery Equipment Manufacturing Co ltd
Priority date: 2020-12-10
Filing date: 2020-12-10
Publication date: 2021-08-17
Anticipated expiration: 2030-12-10

Abstract

The utility model relates to a wet process mixing granulator stirring seal structure, including material pot and stirring main shaft, the upper end of stirring main shaft is fixed with the paddle, paddle adjustment pad, sealed lid and throwing water dish are fixed to the paddle lower extreme, be provided with the skeleton oil blanket between sealed lid and the seal receptacle, the fixed mounting of material pot has the retainer cup, the seal receptacle is fixedly connected with the retainer cup, the fixed mounting of retainer cup has the bearing housing, the bearing housing is connected with stirring main shaft through the bearing; the outer ring of the sleeve cup is provided with an air inlet annular groove and a water drainage annular groove, the air inlet annular groove and the water drainage annular groove are uniformly provided with an air inlet hole and a water drainage hole, an air seal ring is arranged between the paddle and the paddle adjusting pad and fixedly connected with the sleeve cup, and the water drainage annular groove is located below the water throwing disc. The utility model discloses an in the initiative admit air prevention water droplet, dust etc. enter into the main shaft, also in time discover to leak, the maintenance is sealed through examining the leak hunting.

Description

Stirring sealing structure of wet mixing granulator

Technical Field

The utility model relates to a granulator technical field especially relates to a wet process mixing granulator stirring seal structure.

Background

The main motion part of the wet mixing granulator is the stirring system, the stirring system is directly contacted with materials, the materials are basically dust and slurry, if the materials are careless, the dust and the slurry can enter the main shaft, floating micro water drops and dust can enter the main shaft through sealing, and bearings, the main shaft and the like can be rusted or abraded due to long-time accumulation, so that the normal use of the stirring system is influenced, and the production efficiency is reduced.

Meanwhile, the common sealing structure can not actively prevent micro water drops and dust from entering the main shaft; even in a general hermetic seal, due to the non-uniformity of the supplied air and the non-uniformity of the air blown from the periphery of the spindle, there is a possibility that fine water droplets and dust may enter the spindle from a portion with a small air pressure, thereby affecting the normal use of the spindle.

Disclosure of Invention

To the not enough of above-mentioned prior art, the technical problem that this patent application will be solved provides one kind and can improve the leakproofness, improves production efficiency, increase of service life, can carry out the wet process mixing granulator stirring seal structure of leak hunting.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a stirring sealing structure of a wet mixing granulator comprises a material pot and a stirring main shaft, wherein a blade is fixedly mounted at the upper end of the stirring main shaft, a blade adjusting pad, a sealing cover and a water throwing disc are fixedly mounted at the lower end of the blade, a skeleton oil seal is arranged between the sealing cover and a sealing seat, a sleeve cup is fixedly mounted in the material pot, the sealing seat is fixedly connected with the sleeve cup, a bearing sleeve is fixedly mounted in the sleeve cup, and the bearing sleeve is connected with the stirring main shaft through a bearing; the outer ring of the sleeve cup is provided with an air inlet annular groove and a water drainage annular groove, the air inlet annular groove is arranged above the water drainage annular groove at intervals, air inlet holes and water drainage holes are uniformly distributed in the air inlet annular groove and the water drainage annular groove, the air inlet annular groove and the water drainage annular groove are outwards connected with an air pipe and a transparent water pipe respectively, an air seal ring is arranged between the paddle and the paddle adjusting pad and fixedly connected with the sleeve cup, and the water drainage annular groove is located below the water throwing disc.

The bearing sleeve is connected with the stirring main shaft through a thrust ball bearing and a deep groove ball bearing.

And a framework oil seal is also arranged between the bearing sleeve and the stirring main shaft.

Wherein, the air seal ring adopts a disc made of polytetrafluoroethylene materials.

Wherein an O-shaped sealing ring is arranged between the material pot and the sleeve cup.

Wherein, the retainer cup is fixedly connected with the material pot through a bolt.

Wherein, the bearing sleeve is fixedly connected with the sleeve cup through a bolt.

And an O-shaped sealing ring is arranged between the sealing seat and the sleeve cup.

The utility model discloses an in not only preventing water droplet, dust etc. to enter into the main shaft through the initiative of admitting air. And leakage is timely found through the leakage detecting opening, and the sealing is maintained, so that the normal use of the material stirring system is ensured, and the production efficiency is improved.

Drawings

Fig. 1 is the utility model discloses a wet process mixing granulator stirring seal structure's schematic structure diagram.

Fig. 2 is an enlarged schematic view of a point a in fig. 1.

Wherein X represents gas and M represents water.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "upper, lower" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

As shown in fig. 1-2, a stirring sealing structure of a wet mixing granulator comprises a material pot and a stirring main shaft 1, wherein a paddle 15 is fixedly installed at the upper end of the stirring main shaft, a paddle adjusting pad 16, a sealing cover 3 and a water throwing disc 5 are fixedly installed at the lower end of the paddle 15, a skeleton oil seal 14 is arranged between the sealing cover 3 and a sealing seat 4, a sleeve cup 6 is fixedly installed in the material pot, the sealing seat is fixedly connected with the sleeve cup, a bearing sleeve 7 is fixedly installed in the sleeve cup, and the bearing sleeve is connected with the stirring main shaft through a bearing; the outer ring of the sleeve cup is provided with an air inlet annular groove and a water drainage annular groove, the air inlet annular groove is arranged above the water drainage annular groove at intervals, air inlet holes and water drainage holes are uniformly distributed in the air inlet annular groove and the water drainage annular groove, the air inlet annular groove and the water drainage annular groove are outwards connected with an air pipe and a transparent water pipe respectively, an air seal ring 2 is arranged between the paddle and the paddle adjusting pad, the air seal ring is fixedly connected with the sleeve cup, and the water drainage annular groove is located below the water throwing disc.

Wherein, the bearing sleeve is connected with the stirring main shaft through a thrust ball bearing 9 and a deep groove ball bearing 10.

And a framework oil seal 8 is also arranged between the bearing sleeve and the stirring main shaft.

Wherein, an O-

shaped sealing ring

11, 13 is arranged between the material pot and the retainer cup.

Wherein an O-shaped sealing ring 12 is arranged between the sealing seat and the sleeve cup.

The active air intake and the increase of the leakage detection port are adopted to prevent the entry of micro water drops and dust and discover leakage in time. An air inlet annular groove and a water outlet annular groove are formed in the outer ring of the sleeve cup, and air inlet holes and water outlet holes are uniformly distributed. In order to prevent the entering compressed air from being discharged from the water discharge hole, a framework oil seal is additionally arranged between the air inlet cavity and the water discharge cavity, and a labyrinth seal is made. In order to ensure the uniformity of air outlet, an air seal ring is arranged in the air inlet cavity, the air seal ring is mainly a disc made of polytetrafluoroethylene, and a blade adjusting pad is sleeved between the main shaft and the seal ring by controlling the gap between the inner ring of the air seal ring and the main shaft, namely the gap between the main shaft and the blade adjusting pad, so that compressed air entering the inner ring groove cannot be immediately discharged, certain air pressure is formed inside the compressed air and surrounds the periphery of the main shaft, and when the compressed air is gathered to certain pressure, the compressed air is uniformly discharged from the inner ring of the air seal ring and the periphery of the blades. In order to prevent water from directly flowing to the bearing speed reducer through the main shaft, the water throwing disc is arranged and directly throws water into the drainage cavity.

The sealing structure mainly comprises two parts, wherein one part is an air inlet part, positive pressure air enters an outer ring groove of the sealing structure through an air pipe and a joint, the positive pressure air enters an inner ring groove through a plurality of air holes in the outer ring groove, the positive pressure air is uniformly distributed in the inner ring groove in pressure and is discharged around an air seal ring inner ring and blades, and therefore tiny water drops and dust can not enter the inside of the main shaft from a part with small air pressure. The other part is a leakage detection (namely a water outlet) part, and after the sealing device is used for a period of time, even if the air seal fails, partial water drops, dust and the like enter the main shaft, the liquid can be timely found to flow out through the transparent pipe of the leakage detection water outlet, so that the prompt for timely overhauling of the sealing structure is realized.

The structure can prevent water drops, dust and the like from entering the main shaft through active air intake. And leakage is timely found through the leakage detecting opening, and the sealing is maintained, so that the normal use of the material stirring system is ensured, and the production efficiency is improved.

Finally, it should be noted that: various modifications and alterations of this invention may be made by those skilled in the art without departing from the spirit and scope of this invention. Thus, to the extent that such modifications and variations of the present invention fall within the scope of the present claims and their equivalents, it is intended that the present invention encompass such modifications and variations as well.

Claims

1. A stirring sealing structure of a wet mixing granulator is characterized by comprising a material pot and a stirring main shaft, wherein the upper end of the stirring main shaft is fixedly provided with a paddle, the lower end of the paddle is fixedly provided with a paddle adjusting pad, a sealing cover and a water throwing disc, a skeleton oil seal is arranged between the sealing cover and a sealing seat, a sleeve cup is fixedly arranged in the material pot, the sealing seat is fixedly connected with the sleeve cup, a bearing sleeve is fixedly arranged in the sleeve cup, and the bearing sleeve is connected with the stirring main shaft through a bearing; the outer ring of the sleeve cup is provided with an air inlet annular groove and a water drainage annular groove, the air inlet annular groove is arranged above the water drainage annular groove at intervals, air inlet holes and water drainage holes are uniformly distributed in the air inlet annular groove and the water drainage annular groove, the air inlet annular groove and the water drainage annular groove are outwards connected with an air pipe and a transparent water pipe respectively, an air seal ring is arranged between the paddle and the paddle adjusting pad and fixedly connected with the sleeve cup, and the water drainage annular groove is located below the water throwing disc.

2. The stirring and sealing structure of the wet mixing granulator according to claim 1, wherein the bearing sleeve is connected with the stirring main shaft through a thrust ball bearing and a deep groove ball bearing.

3. The stirring and sealing structure of the wet mixing granulator according to claim 1, wherein a framework oil seal is further arranged between the bearing sleeve and the stirring main shaft.

4. The stirring and sealing structure of a wet mixing granulator of claim 1, wherein the air seal ring is a disk made of polytetrafluoroethylene material.

5. The stirring and sealing structure of a wet mixing granulator of claim 1, wherein an O-shaped sealing ring is arranged between the material pot and the sleeve cup.

6. The stirring and sealing structure of the wet mixing granulator according to claim 1, wherein the sleeve cup is fixedly connected with the material pot through bolts.

7. The agitation sealing structure of the wet mixing granulator of claim 1, wherein the bearing sleeve is fixedly connected with the sleeve cup through bolts.

8. The stirring and sealing structure of a wet mixing granulator of claim 1, wherein an O-ring is disposed between the sealing seat and the sleeve cup.