CN200971874Y

CN200971874Y - Sealing device of liquid transport device

Info

Publication number: CN200971874Y
Application number: CN 200620011700
Authority: CN
Inventors: 田玉林
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-11-21
Filing date: 2006-11-21
Publication date: 2007-11-07
Anticipated expiration: 2016-11-21

Abstract

The utility model discloses a sealing device of liquid conveying facility, which is composed of a pump shaft, a pump cover and a shaft cover on the pump shaft. The shaft cover is sleeved with a filling cover. An inner cover of sealing cell and an outer cover of the sealing cell are arranged along axial direction of the shaft cover. After disassembly, the inner cover and the outer cover of the sealing cell form an axial leakage passage. An exhausting port with the same rotation direction of the device which is communicated with suction cavity of the device is positioned on circle direction of the leakage passage. The exhaust passage is provided with a dehydrating disc which is fixed on the shaft cover. The dehydrating disc is integrated with the shaft cover. The utility model has simply structure. Due to the leakage passage and the dehydrating disc in the leakage passage, each sealing component bears little pressure, which extends service life, favors maintenance, prevents leakage of the sealing device and reduces production cost.

Description

The seal arrangement of equipment for liquid transportation

Technical field

The utility model relates to a kind of seal arrangement that is used for equipment for liquid transportation.

Background technique

Seal arrangement uses very general in the middle of all conveying equipment for fluid substances, and existing seal arrangement can be divided into packing seal, mechanical seal, dynamic seal (packing) and skeleton rubber sealing.Equipment for liquid transportation in the modern crafts flow process, still be extensive use of ancient seal arrangement---stuffing box, yet, because a variety of causes, the gland sealed method can not be accepted by people gradually, particularly at liquid commonplace, that corrosivity is strong, particle is bigger in the modern crafts flow process, to replace packing seal with mechanical seal gradually.But; the using effect of mechanical seal is unsatisfactory; the difference of applying working condition causes the length difference in working life of mechanical seal; medium can both cause breaking of sealing surface with the temperature difference of sealing water, the vibration of equipment, causes seal failure, and mechanical seal might cause equipment downtime in case lost efficacy; cause heavy economic losses when serious; simultaneously, mechanical seal maintenance expenses height, dynamic seal (packing) and skeleton rubber seal that then cost is higher.

Summary of the invention

The technical problems to be solved in the utility model provides the seal arrangement of a kind of long service life, simple in structure, the equipment for liquid transportation being convenient to safeguard.

For solving the problems of the technologies described above, the utility model comprises pump shaft, pump cover, be installed in the axle sleeve on the pump shaft, be set with Gland on the axle sleeve, its structural feature is along the axle sleeve radial fit cover and closed chamber overcoat in the closed chamber to be installed, cover and closed chamber overcoat assembling back forms leakage way radially in the described closed chamber, and the circumferencial direction of this leakage way is provided with leakage hole identical with the equipment sense of rotation and that communicate with the equipment suction chamber.

As to improvement of the present utility model, the water-throwing disk that is fixed on the axle sleeve is installed in leakage way; Described water-throwing disk and axle sleeve are integral piece.

After adopting said structure, because cover and closed chamber overcoat assembling back forms leakage way radially in the closed chamber, the medium that leaks out from pressure chamber enters the leakage way between the cover and closed chamber overcoat in the closed chamber through the slit, again owing on the circumferencial direction of this leakage way, be provided with the leakage hole that communicates with the equipment suction chamber, the medium that leaks out from pressure chamber finally enter pump intake or the jar groove that is sucked, and the water-throwing disk that is fixed on the axle sleeve is installed in leakage way, be convenient to utilize the centrifugal force of water-throwing disk to throw away from the medium that pressure chamber leaks out to leakage hole, it is simple in structure, because it is less that each Sealing bears pressure, so long service life, be convenient to safeguard.

Description of drawings

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail:

Accompanying drawing is a structural representation of the present utility model.

Embodiment

With reference to accompanying drawing, the seal arrangement of this equipment for liquid transportation comprises pump shaft 11, pump cover 10, be installed in the axle sleeve 4 on the pump shaft 11, be set with Gland 5 on the axle sleeve 4, along axle sleeve 4 radial fit cover 1 and closed chamber overcoat 2 in the closed chamber are installed, described closed chamber overcoat 2 has a transition linkage section vertically with the interior cover 1 of closed chamber, the closed chamber overcoat 2 of this transition linkage section is sleeved on the radial outside of cover 1 in the closed chamber, link together by the bolt 8 that distributes vertically therebetween, the axial the other end of cover 1 is linked together by bolt 9 and Gland 5 in the closed chamber, the axial the other end of closed chamber overcoat 2 is linked together by bolt 7 and pump cover 10, is provided with stuffing box packing in the space of cover 1 and Gland 5 and axle sleeve 4 in the closed chamber.Cover 1 and closed chamber overcoat 2 assembling backs form leakage way 12 radially in the closed chamber, the circumferencial direction of this leakage way 12 is provided with leakage hole 13 identical with the equipment sense of rotation and that communicate with the equipment suction chamber, size according to leakage rate is adjusted leakage hole 13, in the jar groove of leakage hole 13 through entering pump intake connecting tube or being sucked, the water-throwing disk 3 that is fixed on the axle sleeve 4 is installed in leakage way 12, illustrated water-throwing disk 3 is by being bolted on the axle sleeve 4, and this water-throwing disk 3 can be processed into integral piece with axle sleeve 4.

Claims

1, a kind of seal arrangement of equipment for liquid transportation, comprise pump shaft (11), pump cover (10), be installed in the axle sleeve (4) on the pump shaft (11), be set with Gland (5) on the axle sleeve (4), it is characterized in that cover (1) and closed chamber overcoat (2) in the closed chamber being installed along axle sleeve (4) radial fit, cover (1) and closed chamber overcoat (2) assembling back forms leakage way (12) radially in the described closed chamber, and the circumferencial direction of this leakage way (12) is provided with leakage hole (13) identical with the equipment sense of rotation and that communicate with the equipment suction chamber.

2, the seal arrangement of equipment for liquid transportation according to claim 1 is characterized in that being equipped with the water-throwing disk (3) that is fixed on the axle sleeve (4) in leakage way (12).

3, the seal arrangement of equipment for liquid transportation according to claim 2 is characterized in that described water-throwing disk (3) and axle sleeve (4) are integral piece.