CN217519223U - Positive pressure sealing device for equipment roll shaft - Google Patents

Abstract

The utility model relates to a sealing device specifically is a sealed tight, can long-term use equipment roller malleation sealing device. Including gland and filler, the gland cover is on the roller and is connected with the casing of equipment, the filler is filled in the gap between the casing of gland and equipment, the gland is the drum that both ends have the flange, the flange of gland one end is connected with the casing of equipment, the gland inner wall is close to other end flange department and has seted up the packing recess along the circumferencial direction, the inside at the packing recess is filled to the filler, the positive pressure chamber has been seted up along the circumferencial direction in the middle part of gland inner wall, the gland side is provided with the intake pipe with positive pressure chamber intercommunication. The utility model discloses an intake pipe blows in high-pressure gas to the malleation intracavity, forms a malleation space in the device is inside, and gas just blows to inside the equipment when sealed not tight, can avoid the inside grog granule of equipment to leak, can effectively reduce the hot-conduction of high temperature grog simultaneously and influence the sclerosis of filler, extension seal life.

Description

Positive pressure sealing device for equipment roll shaft

Technical Field

The utility model relates to a sealing device specifically is a sealed tight, can long-term use equipment roller malleation sealing device.

Background

The sealing can be classified into static sealing and dynamic sealing, which are parts or measures for preventing fluid or solid particles from leaking from adjacent joint surfaces and preventing external impurities such as dust and moisture from invading into the interior of machine equipment.

The packing seal is a traditional contact seal, has wide application, simple structure, convenient replacement, low cost and wide application range, can be used for sealing in rotary, reciprocating and spiral motions, and allows axial movement to a rotary motion shaft; the shaft has the defects of poor sealing performance, large radial run-out of the shaft, high power consumption, shaft abrasion, short service life, trace leakage allowance and structure comprising a stuffing box, stuffing, a gland and a gland screw; and (4) packing sealing, namely, packing is used as packing, and a gland is used for compressing the packing to prevent clinker particles in the crushing roller shaft from leaking out of the shaft hole. The basic reason for material leakage is that the sealing part of the roll shaft is influenced by the heat conduction of the high-temperature clinker for a long time, so that the filler at the sealing part is hardened too fast to lose the sealing effect, a gap is formed between the sealing filler and the rotating roll shaft, the material leakage at the sealing part is caused, and the material leakage at the sealing part of the roll shaft is more serious when the negative pressure in the grate cooler system fluctuates for ensuring the generated energy of the waste heat power generation system. The grate cooler system is a key device of a cement production enterprise, needs long-term continuous operation, cannot replace sealing filler in time at a roll shaft sealing part, causes more material leakage of a roll crusher, causes pollution to the surrounding environment, and needs to be cleaned regularly, so that the labor intensity of workers is increased, and the environmental protection risk is increased for the enterprise.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem, thereby providing an equipment roller malleation sealing device that seals tightly, can use for a long time.

The utility model provides a problem, the technical scheme of adoption is:

the utility model provides an equipment roller malleation sealing device, including gland and filler, the gland cover is on the roller and is connected with the casing of equipment, the filler is filled in the gap between the casing of gland and equipment, the gland is the drum that both ends have the flange, the flange of gland one end is connected with the casing of equipment, the gland inner wall is close to other end flange department and has seted up the packing recess along the circumferencial direction, the filler is filled in the inside of packing recess, the positive pressure chamber has been seted up along the circumferencial direction in the middle part of gland inner wall, the gland side is provided with the intake pipe with positive pressure chamber intercommunication.

Adopt above-mentioned technical scheme the utility model discloses, compare with prior art, its outstanding characteristics are:

firstly, high-pressure gas is blown into the positive-pressure cavity through the gas inlet pipe, a positive-pressure space is formed inside the device, and the gas is blown into the equipment when the sealing is not tight, so that clinker particles in the equipment can be prevented from leaking, the hardening influence of high-temperature clinker heat conduction on the filler can be effectively reduced, and the sealing life is prolonged.

② has good sealing performance in certain pressure and temperature range.

And the friction resistance is small, the friction coefficient is stable, the abrasion is small, and the automatic compensation can be realized to a certain extent after the abrasion.

Fourthly, the structure is simple, the assembly and disassembly are convenient, and the practicability is strong.

Preferably, the present invention further provides:

the gland is a split structure consisting of two semicircular rings; the device is convenient to mount, dismount and maintain.

The air inlet pipe is provided with an air volume adjusting valve; the air quantity is convenient to control.

Drawings

FIG. 1 is a schematic structural view of an embodiment of the present invention in use;

fig. 2 is a schematic front view of the embodiment of the present invention;

FIG. 3 is a view A-A of FIG. 2;

fig. 4 is a view B in fig. 2.

In the figure: a gland 1; an air inlet pipe 2; a filler 3; a roll shaft 4; a housing 5 of the device.

The specific implementation mode is as follows:

the invention will be further described with reference to the following examples, which are intended only for better understanding of the invention and therefore do not limit the scope of the invention.

Referring to fig. 1 to 4, a positive pressure sealing device for a roller shaft of equipment, which comprises a gland 1 and a packing 3, wherein the gland 1 is a cylinder with flanges at two ends, the packing 3 is a graphite packing 3, the gland 1 is sleeved on the roller shaft 4, the flange at one end is connected with a shell 5 of the equipment, the packing 3 is filled in a gap between the gland 1 and the shell 5 of the equipment, a groove is arranged on the inner wall of the gland 1 close to the flange at the other end along the circumferential direction, the packing 3 is filled in the groove, not only can the sealing effect of the sealing device and the roller shaft 4 be ensured, but also the abrasion of the contact part with the roller shaft 4 can be reduced, a positive pressure cavity is arranged in the middle of the inner wall of the gland 1 along the circumferential direction, an air inlet pipe 2 communicated with the positive pressure cavity is arranged on the side surface of the gland 1, the air inlet pipe 2 inclines outwards to enable positive pressure air to be smoothly inwards, so as to achieve good sealing effect, the air inlet pipe 2 is a rubber hose, and an air quantity regulating valve is arranged on the air inlet pipe 2, the gland 1 is a split structure consisting of two semicircular rings, and sealant is smeared on the flange fixing surface and the split joint surface to ensure the sealing effect.

During the use, along with sealing device's wearing and tearing are ageing, pack 3 and the clearance grow of roller 4, through the air input of air regulation valve control entering malleation sealing device in, the pressure value that keeps the malleation chamber all the time controls at reasonable scope to reach long-time operation and reliable sealed result of use.

The utility model discloses a 2 high-pressure gas that insufflate in to malleation intracavity in intake pipe, in the inside malleation space that forms of device, gas just blows to equipment inside when sealed not tight, can avoid equipment inside grog granule to leak, can effectively reduce the hot-conduction of high temperature grog simultaneously and influence the sclerosis of packing 3, the life is sealed in the extension, good sealing performance has in certain pressure and temperature range, frictional resistance is little, the coefficient of friction is stable, wearing and tearing are little, can automatic compensation to a certain extent after the wearing and tearing, moreover, the steam generator is simple in structure, it is convenient to install and remove, therefore, the clothes hanger is strong in practicability.

The above description is only a preferred and practical embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent variations made by using the contents of the specification and the drawings are included in the scope of the present invention.

Claims (3)

1. The utility model provides an equipment roller malleation sealing device, includes gland and filler, and the gland cover is connected on the roller and with the casing of equipment, and its characterized in that is filled in the gap between the casing of gland and equipment to the filler: the gland is a cylinder with flanges at two ends, the flange at one end of the gland is connected with the shell of the equipment, a packing groove is formed in the position, close to the flange at the other end, of the inner wall of the gland in the circumferential direction, packing is filled in the packing groove, a positive pressure cavity is formed in the middle of the inner wall of the gland in the circumferential direction, and an air inlet pipe communicated with the positive pressure cavity is arranged on the side face of the gland.

2. The apparatus roller positive pressure seal device of claim 1, wherein: the gland is a split structure formed by two semicircular rings.

3. The apparatus roller positive pressure seal device of claim 1, wherein: the air inlet pipe is provided with an air volume adjusting valve.

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