CN217784204U

CN217784204U - Connecting and sealing device for pivot of stirrer of biogas anaerobic reactor

Info

Publication number: CN217784204U
Application number: CN202220330281.7U
Authority: CN
Inventors: 刘玉祥; 段国平; 王勇兵; 高国庆; 叶志刚
Original assignee: Shanxi Baifu Bio Energy Development Co ltd
Current assignee: Shanxi Baifu Bio Energy Development Co ltd
Priority date: 2022-02-18
Filing date: 2022-02-18
Publication date: 2022-11-11
Anticipated expiration: 2032-02-18

Abstract

The utility model discloses a supporting point connecting and sealing device of a stirrer of a biogas anaerobic reactor, in particular to the technical field of waste treatment, which comprises a bottom and a bearing base, wherein a tapered roller bearing is arranged on the bearing base; the bearing base is connected with the lower part of the stirring shaft, and the middle part of the stirring shaft and the upper part of the stirring shaft are sequentially connected above the lower part of the stirring shaft; the upper part of the stirring shaft is connected with a bearing, the bearing is arranged in a bearing seat, and a reducer and a motor are sequentially connected above the bearing through a coupler; the coupler and the bearing are sealed through a retaining washer and fixed through a round nut. The stopping washer, the frameless oil seal and the asbestos rope seal are mutually matched, so that compared with a packing sealing mode, the sealing device cannot be leaked from a packing, and larger friction between the packing and a shaft body cannot be generated; compared with a mechanical sealing mode, the requirement on the installation precision during the installation and the assembly of the moving coil and the static coil is not needed, the requirement on the assembly precision is not high, and the field installation and the overhaul are also convenient.

Description

Connecting and sealing device for pivot of stirrer of biogas anaerobic reactor

Technical Field

The utility model relates to a waste disposal technical field, more specifically say, the utility model relates to a marsh gas anaerobic reactor agitator fulcrum connection sealing device.

Background

Anaerobic digestion technology is increasingly widely applied due to its advantages of high efficiency, low energy consumption, capability of treating organic waste and simultaneously generating biogas for clean energy and the like. The types of the anaerobic reactors are numerous, and the common anaerobic sludge bed reactor (UASB), a full mixed reactor (CSTR), a high-efficiency sludge expanded bed reactor (EGSB), an anaerobic sludge bed reactor (UBF) and the like exist, and different types of reactors need to use different equipment to serve the operation process. For a fully mixed anaerobic reactor (CSTR), the stirring of materials in a tank is a necessary guarantee for the process operation, namely, anaerobic materials in the system are mixed in a certain stirring mode, such as mechanical stirring, hydraulic stirring, jet stirring and the like, so that the mass transfer and the biological utilization of the materials are facilitated, and the aims of removing pollution and generating biogas are fulfilled.

The existing structure is that, at anaerobic reactor inside be provided with the stirring rake, the stirring rake is connected with the one end of (mixing) shaft, and the other end and the motor of (mixing) shaft are connected, that is to say, the motor passes through the (mixing) shaft and drives the stirring rake and rotate, reaches the purpose that the material mixes, no matter the (mixing) shaft is located the air chamber or jar body, all involves the sealed problem of contact of axle and jar body. The commonly used sealing method generally adopts a packing seal or a mechanical seal.

The packing seal is realized by contacting packing and a shaft (shaft sleeve) with the outer circular surface. The filling material can be graphite, cotton woven filling material soaked by butter, asbestos filling material soaked by graphite, metal foil asbestos core filling material and the like, and different filling materials are used according to different process media. The disadvantages of packing seals are: firstly, according to statistics, the filler leakage amount of the soft filler seal is 100 times of that of the mechanical seal, and the maintenance of a sealing system is more frequent due to continuous leakage; secondly, the friction force of the packing seal is larger and is 6-10 times of the friction force of the mechanical seal because the packing seal is in direct contact friction with the shaft body, and the service life of the shaft body is reduced due to the friction of the shaft body; finally, the packing seal requires more power to be consumed for the same stirring torque due to the large friction.

The mechanical seal is also called end face seal, and is a sealing device formed by mutually attaching a static ring and a dynamic ring and relatively rotating. The leakage rate is small, the power loss is small, the service life is long, frequent maintenance is not needed, and the like, but the defects are that the manufacture is complex, the precision requirement is high, and the installation and the replacement are not as convenient as the filling form.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned defects in the prior art, the embodiment of the present invention provides a pivot connecting and sealing device for a stirrer of a biogas anaerobic reactor, so as to solve the problems in the prior art.

In order to achieve the above purpose, the utility model provides a following technical scheme: a supporting point connecting and sealing device for a stirrer of a biogas anaerobic reactor comprises a base, wherein a bearing base is arranged above the base, and a tapered roller bearing is arranged on the bearing base;

the bearing base is connected with the lower part of the stirring shaft, and the middle part and the upper part of the stirring shaft are sequentially connected above the lower part of the stirring shaft;

the upper part of the stirring shaft is connected with a bearing, the bearing is arranged in a bearing seat, and a reducer and a motor are sequentially connected above the bearing through a coupler;

the coupler and the bearing are sealed through a retaining washer and fixed through a round nut.

Furthermore, the bearing base and the tapered roller bearing are sealed through a frameless oil seal and an asbestos rope.

Furthermore, the lower part of the stirring shaft, the middle part of the stirring shaft and the upper part of the stirring shaft are connected with each other through flanges.

Further, the bearing base and the base are fixed through bolts.

Further, the upper part of the stirring shaft and the bearing are sealed through a mechanical seal.

Furthermore, the support also comprises a support for supporting, and two ends of the support are respectively fixed on the flanges adjacent to the support.

The utility model has the advantages that:

through the mutual matching of the retaining washer, the frameless oil seal and the asbestos rope seal, compared with a packing sealing mode, the leakage from a packing position is avoided, and larger friction between the packing and a shaft body is avoided; compared with a mechanical sealing mode, the requirement on the mounting precision during mounting and assembling of the moving coil and the static coil is not required, the requirement on the mounting precision is not high, and the field mounting and the overhaul are also convenient.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an enlarged schematic view of the middle end structure of the present invention.

Fig. 3 is an enlarged schematic view of the middle structure of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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 efforts all belong to the protection scope of the present invention.

The supporting point connecting and sealing device for the stirrer of the biogas anaerobic reactor shown in the attached figures 1-2 comprises a base 15, wherein a bearing base 13 is arranged above the base 15, and a tapered roller bearing 14 is arranged on the bearing base 13;

the bearing base 13 is connected with the lower part 12 of the stirring shaft, and the middle part 10 and the upper part 11 of the stirring shaft are sequentially connected above the lower part 12 of the stirring shaft;

the upper part 11 of the stirring shaft is connected with a bearing 6, the bearing 6 is arranged in a bearing seat 5, and a speed reducer 2 and a motor 1 are sequentially connected above the bearing 6 through a coupler 4;

the coupler 4 and the bearing 6 are sealed through a retaining washer 16 and fixed through a round nut.

In a preferred embodiment, the bearing base 13 and the tapered roller bearing are sealed by a frameless oil seal 18 and an asbestos cord 17.

In a preferred embodiment, lower agitator shaft part 12, middle agitator shaft part 10 and upper agitator shaft part 9 are connected to one another by flanges 11.

In a preferred embodiment, the bearing base 13 and the base 15 are fixed by bolts.

In a preferred embodiment, said mixer shaft upper part 9 and said bearing 6 are sealed by means of a mechanical seal 7.

In a preferred embodiment, the device further comprises a support 3 for supporting, and two ends of the support 3 are respectively fixed on the flanges 8 adjacent to the support.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," "connecting," and "connecting" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be directly connected, and "upper," "lower," "left," and "right" are only used to indicate relative positional relationships, and when the absolute position of the object to be described is changed, the relative positional relationships may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a marsh gas anaerobic reactor agitator fulcrum connection sealing device, includes base (15), its characterized in that: a bearing base (13) is arranged above the base (15), and a tapered roller bearing (14) is arranged on the bearing base (13);

the bearing base (13) is connected with the lower part (12) of the stirring shaft, and the middle part (10) and the upper part (9) of the stirring shaft are sequentially connected above the lower part (12) of the stirring shaft;

the upper part (9) of the stirring shaft is connected with a bearing (6), the bearing (6) is arranged in a bearing seat (5), and a speed reducer (2) and a motor (1) are sequentially connected above the bearing (6) through a coupling (4);

the coupler (4) and the bearing (6) are sealed through a retaining washer (16) and fixed through a round nut.

2. The supporting point connecting and sealing device of the stirrer of the biogas anaerobic reactor according to claim 1, which is characterized in that: the bearing base (13) and the tapered roller bearing are sealed through a frameless oil seal (18) and an asbestos rope (17).

3. The supporting point connecting and sealing device of the stirrer of the biogas anaerobic reactor according to claim 1, which is characterized in that: the lower portion (12) of the stirring shaft, the middle portion (10) of the stirring shaft and the upper portion (9) of the stirring shaft are connected through a first flange (11).

4. The pivot joint sealing device for the stirrer of the biogas anaerobic reactor according to claim 1, which is characterized in that: the bearing base (13) and the base (15) are fixed through bolts.

5. The supporting point connecting and sealing device of the stirrer of the biogas anaerobic reactor according to claim 1, which is characterized in that: the upper part (9) of the stirring shaft is sealed with the bearing (6) through a mechanical seal (7).

6. The supporting point connecting and sealing device of the stirrer of the biogas anaerobic reactor according to claim 1, which is characterized in that: the support is characterized by further comprising a support (3) used for supporting, wherein two ends of the support (3) are respectively fixed on a second flange (8) adjacent to the support.