CN2217710Y

CN2217710Y - Axial mechanical sealing device for residual-slurry pump

Info

Publication number: CN2217710Y
Application number: CN 95231005
Authority: CN
Inventors: 魏春生
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-05-02
Filing date: 1995-05-02
Publication date: 1996-01-17
Anticipated expiration: 2005-05-02

Abstract

The utility model relates to an axial mechanical sealing device for residual-slurry pumps, and belongs to the sealing device of the mechanical engineering, comprising a filling material box, a clear water pipe, a static ring, a moving ring, a moving ring fixed seat, a propelling spring, a main shaft, etc. The sealing device is reversely arranged on the main shaft. The clear water pipe is arranged between the move ring and the static ring. The utility model use the clear water to cool and lubricate, reduces friction, increases service life, reduces service power, has good sealing effect, saves time, saves material, saves 20-30 thousand yuan per set.

Description

The axial mechanical seal device of slag stock pump

The axial mechanical seal device of the utility model slag stock pump belongs to the seal arrangement in mechanism's engineering.

Known Chinese utility model patent No. 90219680.4 " a kind of mechanical seal ", it is made up of sealing gasket 1, stationary ring 2, stationary ring O type circle 3, rotating ring friction plate 4, rotating ring body 5, rotating ring O type circle 6, hook spring 7, positioning ring 8 and positioning ring screw 9, this is quiet, rotating ring axially and seal element radially separately, with the hook spring can make that rotating ring body and axle or wheel can rotate synchronously, the end face of rotating ring body do not produce and scratches the end with decide the ring body front-end face, can be widely used in carry weak acid, in, on the equipment of following oily, the water of low temperature (100 ℃).

Other No. 90226621.7 patents " a kind of mechanical seal device ", the rotating ring of this device is packed on the rotating ring frame, stationary ring is assembled in the stationary seat by guide way, adopting the waveform holddown spring to make between rotating ring and the stationary ring closely contacts, between stationary ring and wavy spring, be provided with gimbal, this apparatus structure is tight, and size is little, makes and installs easily.

The axial mechanical sealing system that the utility model provides a kind of slag prize pump to use, metallurgical at present, mine industry slag stock pump mainly adopts packing seal, but there is following shortcoming, the air horsepower loss is big, axial leakage is serious, and maintenance is frequent, and it is higher to change spare part and filler expense, in order to address the above problem, the purpose of this invention is to provide the axial mechanical seal device of a kind of slag stock pump.

Concrete structure of the present utility model: slag stock pump axial sealer comprises 1 Stuffing box, 2 clear water pipes, 3 stationary rings, 4 main shafts, 5 rotating ring fixed bases, 6 propelling springs, 7 rotating rings, the sealing device oppositely is installed between main shaft and the Stuffing box, and the spring pressure direction is identical with the fluid pressure direction.Stationary ring 3 is fixed on the Stuffing box 1 by left hand thread, and rotating ring 7 usefulness fixed bases 5 are fixed on the main shaft 4, and the propelling spring 6 that is enclosed within on the main shaft 4 tightens up and drive the rotating ring rotation, and clear water pipe 2 is housed on the Stuffing box 1.Clear water pipe 2 is gone into perforation between stationary ring 3 and rotating ring 7, is provided with the ebb interval of crossing less than 2mm between Stuffing box 1 and rotating ring 7, makes to form a clear water pressure chamber between stationary ring 3 and the rotating ring 7, stops slag slurry inflow friction to be paid, and reduces friction and the leakage of slag slurry.

Replace packing seal with axial mechanical seal device, the sealing contact surface of rotating ring and stationary ring adopts clear water cooling, lubricated, and when the slag stock pump turned round, main shaft drove the rotating ring rotation, clear water enters pump chamber after being full of Seal cage.

Advantage of the present utility model: the axial mechanical seal device of slag stock pump not only good sealing effect, power loss is few, long service life, and save time, material-saving, every cover mechanical seal device can be saved 2～30,000 yuan, concrete characteristics are:

1. because stationary ring is fixed on the sealing system with screw thread, avoid the pump preliminary stage because the barometric pressure effect produces the stationary ring obscission.

2. because mechanism's sealing friction pair adopts clear water lubricated, and friction factor is little, the air horsepower loss is equivalent to 2% of former packing seal air horsepower loss.And stop the slag slurry to flow into the purpose that Seal cage has reached sealing.

3. owing to the friction of mechanical seal is paid; adopted YG6 cemented carbide high-abrasive material; be the working life of sealing system 2000 hours; essential weekly shutdown of former packing seal changed a filler, changes an axle sleeve in 45 days, and existing mechanical sealing system has been avoided axle sleeve abrasion, replacing, do not used filler; both relatively; in 2000 hours, can save 100 kilograms of fillers, save 8 on axle sleeve, save owing to change the maintenance man-hours 400 hours of filler, axle sleeve.

Description of drawings Fig. 1 is the axial mechanical seal device structure of a slag stock pump sectional view, also is Figure of abstract, 1 Stuffing box, 2 clear water pipes, 3 stationary rings, 4 main shafts, 5 rotating ring fixed bases, 6 propelling springs, 7 rotating rings among the figure.

Embodiment: the utility model is used on the various slag stock pumps of domestic production, process left hand thread on the stationary ring of general FO series mechanical sealing, fix with Stuffing box, rotating ring is installed on the main shaft 4, sealing contact surface between rotating ring and the stationary ring adopts YG6 cemented carbide high-abrasive material, increases the service life.

Claims

1, the axial mechanical seal device of a kind of slag stock pump, it is characterized in that it comprises 1 Stuffing box, 2 clear water pipes, 3 stationary rings, 4 main shafts, 5 rotating ring fixed bases, 6 propelling springs, 7 rotating rings, the axial mechanical seal device of slag stock pump is installed between main shaft 4 and the Stuffing box 1, stationary ring 3 is fixed on the Stuffing box 1 by left hand thread, rotating ring 7 usefulness fixed bases 5 are fixed on the main shaft 4, the propelling spring 6 that is enclosed within on the main shaft 4 tightens up and drives the rotating ring rotation, and clear water pipe 2 is housed on the Stuffing box 1.

2, by the axial mechanical seal device of the described slag stock pump of claim 1, it is characterized in that clear water pipe 2 goes into perforation between stationary ring 3 and rotating ring 7, between Stuffing box 1 and rotating ring 7, be provided with the ebb interval of crossing less than 2mm.

3, by the axial mechanical seal device of the described slag stock pump of claim 1, it is characterized in that mechanical seal device oppositely is installed on the main shaft 4, the spring pressure direction is identical with the fluid pressure direction.