CN101073755A

CN101073755A - Sided-intake sealer of agitator

Info

Publication number: CN101073755A
Application number: CN 200610040323
Authority: CN
Inventors: 华宝付
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-05-15
Filing date: 2006-05-15
Publication date: 2007-11-21

Abstract

The invention is concerned with the sealing equipment for the side moving beater, it is: fixes inside end surface machine seal that crosses the inside wall of the container, fixes outside end surface machine seal between the beating axis and the outside wall of the container. The outside end surface machine seal is double end surface machine seal that fixes on the beating axis by the sealing fixing bushing. The invention is small fraying consumption, better sealing efficiency.

Description

Sided-intake sealer of agitator

Technical field

The present invention relates to make liquid and liquid, liquid and gas or liquid and pressed powder mixed uniformly agitator in capacity (as retort, groove or reactor etc.), relate in particular to the improvement of sealer of agitator.

Background technology:

In industries such as petrochemical industry, pharmacy, food processing, water treatments, so that revolve in the production process of floating, crystallization, flue gas desulfurization in papermaking, titanium dioxide, thermal power plant, often need retort, groove or reactor etc. open wide or airtight container in carry out the stirring that mixes of liquid and liquid, gas or pressed powder.Traditional agitator all is made up of shaft and the stirrer paddle that is installed in the shaft end, agitator stretches into stirrer paddle from the top of reaction vessel below the liquid level and carries out mixing of material, this structure needs the long shaft that stretches into, both increased expending of hub block material, stressed also unreasonable, particularly this jacking-type agitator, when the material to big capacity reaction capacity stirs, its upper liquid flows slow relatively, form easily and stir dead angle and concentration gradient, mixed effect is relatively poor, and the time is long.

Recently, occurred again on the market passing its sidewall and agitator stretched into the side-feeding mixer that stirs in the material from the reaction vessel side.This side-feeding mixer have stir moment of torsion big, stir that flow is reliable, mixing of materials is effective, save the advantage of hub block material; But this agitator need be provided with between shaft and container side wall reliably, effective seal, and existing sealing device all adopts soft packing seal form (being commonly called as packing_seal), and the sealing structure is to rely on the extruding force of filler offside cinclides and the power of tightening of shaft is finished sealing.Therefore this sealing device exists the filler quick abrasion on the one hand, and can't compensate effectively the wearing and tearing filler, can only tighten gland stud continually or change filler, it is big not only to stir the wearing and tearing power loss, influence the operating efficiency of agitator, also give and use, safeguard and bring great inconvenience; The sealing device has comparatively strict requirement to the working condition of agitator on the other hand, the operational vibration of shaft and eccentric rotary all can be between shaft and filler formation rule or irregular work slot, the seepage of material is stirred in aggravation, can not reach stable, desirable sealing effectiveness, even cause can't operate as normal.The sealing structure all has comparatively strict restriction to operating pressure and speed of agitator simultaneously, can not bear the high pressure in the hermetically sealed container, more is difficult to bear simultaneously the positive and negative operating pressure in the container, and the scope of application is subjected to direct influence.

So, existing sealer of agitator, not only exist the shaft serious wear, the wearing and tearing power attenuation is big, the deficiency that the agitator working life is short, and more main be that to exist sealing effectiveness undesirable, working environment requires high, cause stirring the material seepage easily, both wasted the stirring material, again serious environment pollution.

Summary of the invention

At the above-mentioned deficiency of existing in prior technology, it is little that technical problem to be solved by this invention provides a kind of wearing and tearing power consumption, the sided-intake sealer of agitator that sealing effectiveness is desirable.

In order to solve the problems of the technologies described above, sided-intake sealer of agitator of the present invention, comprise the shaft that passes container side wall, the mechanical seal of side inner face is housed on the shaft of described container side wall inboard, on the shaft in this container side wall outside the mechanical seal of side outer face is housed also.

After adopting said structure, because end surface mechanical sealing all is installed on the shaft of chamber wall both sides, this has not only reduced frictional resistance effectively, greatly reduces the friction power loss that packing seal produces, and is slight to the wearing and tearing of axle; And the seal operation situation is stable, and the sealing effectiveness ideal is applicable to various working environments such as high pressure, vacuum, high temperature.Also owing to end surface mechanical sealing all is housed in the chamber wall both sides, has multi-sealed effect on the one hand, make sealing effectiveness even more ideal reliable, on the other hand, make also the sealing device can be applicable to the positive and negative pressure duty of container effectively, make it under barotropic state that it is non-leakage to turn round, the container material is not excessive, avoids the pollution of material to environment; Under negative pressure state, can effectively stop extraneous water, air to enter in the container again, and keep the vacuum in the container, the working environment in the stable container shortens the production cycle, energy savings.

A kind of preferred implementation of the present invention is, the outer face mechanical seal of described side is double mechanical seal, and this double mechanical seal is loaded on the shaft by mounting bush.The both-end structure is adopted in side outer face mechanical seal, and the pressure medium that every grade of sealing is born successively decreases, and more is applicable to condition of high voltage, and the both-end structure also is convenient to introduce sealing fluid and is carried out shutoff, lubricated and cooling simultaneously, thereby the reinforced seal effect increases the service life.Its sealing mounting bush structure was both just installed, and had played the protective effect to shaft again.

Further embodiment of the present invention is, is fixedly connected with bearing block in the outer end of sealing mount pad, and the bearing that is supported on the shaft is housed in this bearing block.Adopt bearing and bearing block structure, not only improved the smoothness of operation of shaft, also made things convenient for and installed and maintenance, have characteristic of reasonable structure.

Description of drawings:

Below in conjunction with accompanying drawing sided-intake sealer of agitator of the present invention is described in further detail.

Fig. 1 is the assembly structure schematic diagram of a kind of specific embodiment of sided-intake sealer of agitator of the present invention;

Fig. 2 is the local structure for amplifying schematic diagram of sealing device in the structure shown in Figure 1.

Among the figure, 1-stirring motor, 2-shaft, the outer face mechanical seal of 3-side, the mechanical seal of 4-side inner face, the 5-container, the 6-stirrer paddle, the 7-agitator is installed wallboard, the 8-bearing, the 9-mounting bush, 10-seals mount pad, and the 11-sealing fluid feeds the hole, the 12-bearing block, the outer stationary ring sealing ring of 31-side, the outer seal ring of moving ring of 32-side, 33-side outer spring, 34-side outer spring mount pad, stationary ring sealing ring in the 41-side, seal ring of moving ring in the 42-side, 43-side inner spring, 44-side inner spring mount pad.

The specific embodiment:

In structure shown in Figure 1, by agitator wallboard 7 is installed at the sidewall position of mounting hole of containers 5 such as retort, groove or reactor and is installed with sealing mount pad 10 hermetically, this structure is convenient to the installation and maintenance of agitator, also sealing mount pad 10 directly can be fixed on the sidewall of container 5 certainly.Shaft 2 passes the interior plate and the agitator of sealing mount pad 10 wallboard 7 is installed, and extend in the material liquid surface of container 5.Stirrer paddle 6 is equipped with in the inserting end end of shaft 2, and the outer end of shaft 2 then is in transmission connection with stirring motor 1, to drive shaft 2 and stirrer paddle 6 rotations, realizes the materials in the container 5 are stirred.

As shown in Figure 2, install between wallboard 7 madial walls at shaft 2 and the agitator that is loaded on container 5 sides side inner face mechanical seal 4 is housed, this side inner face mechanical seal 4 comprises in the side seal ring of moving ring 42, side inner spring 43 and side inner spring mount pad 44 in stationary ring sealing ring 41, the side; Stationary ring sealing ring 41 is fixedly installed on the agitator installation wallboard 7 hermetically by seal in the side, seal ring of moving ring 42 is installed on the shaft 2 by corresponding sealing ring in the side, 43 of side inner springs are supported in the side between the seal ring of moving ring 42 and side inner spring mount pad 44, with working clearance of compensating dynamic and static ring sealing ring and apply certain sealed operating pressure.

Outer end at sealing mount pad 10 is fixedly connected with bearing block 12, in sealing mount pad 10 side outer face mechanical seal 3 is housed, and this side outer face mechanical seal 3 is the double mechanical seal structure, and is loaded on the shaft 2 by mounting bush 9.The outer stationary ring sealing ring 31 of two sides of this side outer face mechanical seal 3 is fixedly installed on the inner side end of sealing mount pad 10 respectively and on the end face of bearing block 12 hermetically; 32 of outer seal ring of moving ring of two sides are bearing on the mounting bush 9 by side

outer spring

33 and 34 sockets of side outer spring mount pad, and sealing mounting bush 9 is fixedly sleeved on shaft 2.The sealing mount pad 10 that is sealed is provided with two sealing fluids and feeds hole 11, so that feed sealing fluid circularly.

The bearing block 12 that is positioned at sealing mount pad 10 outer ends is loaded on the bearing 8 of supporting shaft 2, and this bearing 8 adopts double-row conical bearing.

Above-mentioned only enumerated the present invention some preferred embodiment, but the present invention is not limited thereto, under the situation of basic principle of the present invention, can also make some improvement and conversion.Being not limited to spring as the elastic component in the end face seal, can also be elastic components such as corrugated sheet spring, rubber spring; Shaft 2 both can be to stretch in the container from the side of container, also can stretch in the container from the bottom or in the mode that tilts; End surface mechanical sealing removes and adopts above-mentioned single end face, double mechanical seal, can also be other mechanical seal structure form commonly used; The friction pair material of dynamic and static sealing ring can be selected conventional machinery encapsulants such as graphite, bronze, carborundum, silicon nitride for use.These improve and conversion all is considered as falling within the scope of protection of the present invention.

Claims

1, a kind of sided-intake sealer of agitator, comprise the shaft (2) that passes container (5) sidewall, it is characterized in that: on the shaft (2) of described container (5) inside sidewalls, side inner face mechanical seal (4) is housed, on the shaft (2) in this container (5) sidewall outside side outer face mechanical seal (3) is housed also.

2, sided-intake sealer of agitator according to claim 1, it is characterized in that: by agitator wallboard (7) is installed on described container (5) sidewall and is fixedly connected with sealing mount pad (10), on the shaft (2) of these agitator installation wallboard (7) both sides, side outer face mechanical seal (3) and side inner face mechanical seal (4) are housed respectively; This side outer face mechanical seal (3) is positioned at sealing mount pad (10).

3, sided-intake sealer of agitator according to claim 2 is characterized in that: described side outer face mechanical seal (3) is double mechanical seal, and this double mechanical seal is loaded on the shaft (2) by mounting bush (9).

4, sided-intake sealer of agitator according to claim 3, it is characterized in that: the outer stationary ring sealing ring (31) of two sides of described side outer face mechanical seal (3) is fixedly installed in the two side ends of sealing mount pad (10) respectively, the outer seal ring of moving ring (32) of its side is supported on the mounting bush (9) by spring (33) and side outer spring mount pad (34) socket, and this mounting bush (9) is fixedly sleeved on shaft (2); Described sealing mount pad (10) is installed wallboard (7) by agitator and is fixed on container (5) sidewall.

5, according to claim 2,3 or 4 described sided-intake sealer of agitator, it is characterized in that: be provided with at least on the sealing mount pad (10) in two sealing fluids and feed hole (11).

6, according to claim 2,3 or 4 described sided-intake sealer of agitator, it is characterized in that: the outer end at sealing mount pad (10) is fixedly connected with bearing block (12), and the bearing (8) that is supported on the shaft (2) is housed in this bearing block (12).

7, sided-intake sealer of agitator according to claim 2, it is characterized in that: stationary ring sealing ring (41) in the inner seal that agitator is installed wallboard (7) is equipped with the side of side inner face mechanical seal (4), the interior seal ring of moving ring (42) of side correspondingly then is fixed on the shaft (2) by side inner spring (43) and side inner spring mount pad (44).

8, sided-intake sealer of agitator according to claim 1, it is characterized in that: be fixed with sealing mount pad (10) on described container (5) sidewall, side outer face mechanical seal (3) and side inner face mechanical seal (4) are housed respectively on the shaft (2) of container (5) sidewall both sides; This side outer face mechanical seal (3) is positioned at sealing mount pad (10).