CN209818382U - Sealing device for shaft seal of fluid mechanical pump - Google Patents

Abstract

The utility model discloses a fluid machinery pump sealing device for bearing seal, which comprises a pump body, pump body lower extreme fixed mounting is provided with the axle sleeve, the installation is provided with sealing device outside the axle sleeve, the inside cooling channel, the right side of all having seted up of sealing device the connection of cooling channel lower extreme is provided with the inlet tube, left side the connection of cooling channel lower extreme is provided with the outlet pipe, left side the inside upper end of cooling channel is provided with second sealing rubber pad, second sealing rubber pad central point puts and has seted up the perforation, the right side the horizontal fixed connection in cooling channel upper end is provided with the extension pipe, both sides all are provided with the extension piece about sealing device. The utility model discloses the extension tube passes second sealing rubber pad central point and puts the perforation when utilizing the installation for inside the cooling channel intercommunication of both sides utilized water source access device, to the bearing seal department of device cover the work of cooling down, prevent the deformation that the bearing seal department high temperature caused, thereby the effectual life who prolongs the pump body.

Description

Sealing device for shaft seal of fluid mechanical pump

Technical Field

The utility model relates to a mechanical pump equipment field specifically is a sealing device for fluid machinery pump bearing seal.

Background

Currently, the shaft is a friction seal or stuffing box, which is used to prevent the liquid leakage between the shaft and the bearing of the compressor or other fluid conveying equipment, and is also a sealing device arranged to prevent the leakage between the pump shaft and the housing; common shaft seal types include packing, mechanical and dynamic seals; when the temperature of the shaft seal is too high, particularly before the unit is started, if the temperature is too high, the shaft end steam seal and the rotor steam seal section are heated violently, and a local stress concentration phenomenon is generated, so that certain deformation is generated, a gap between a rotor and a cylinder is changed, the steam leakage amount of the shaft seal is increased, the expansion difference is increased, and finally the device is damaged, so that the problem is solved urgently by using the device.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sealing device for fluid machinery pump bearing seal to provide in solving above-mentioned background art and when bearing seal department temperature was too high, especially before the unit starts, if the temperature is too high, can make axle head gland seal department and rotor gland seal section heating violent, produce local stress concentration phenomenon, thereby produce must warp certainly, can make the clearance between rotor and the cylinder change, make the bearing seal volume of leaking increase, the poor increase of expanding leads to the problem of device damage at last.

In order to achieve the above object, the utility model provides a following technical scheme: a sealing device for a shaft seal of a fluid mechanical pump comprises a pump body, wherein a shaft sleeve is fixedly arranged at the lower end of the pump body, a sealing device is arranged outside the shaft sleeve, cooling channels are arranged in the sealing device, a water inlet pipe is connected and arranged at the lower end of the cooling channel on the right side, a water outlet pipe is connected and arranged at the lower end of the cooling channel on the left side, a second sealing rubber pad is arranged at the upper end in the cooling channel on the left side, a through hole is arranged at the central position of the second sealing rubber pad, an extension pipe is horizontally and fixedly connected and arranged at the upper end of the cooling channel on the right side, extension blocks are arranged on the upper and lower sides of the sealing device, a hinge is fixedly connected and arranged at the upper end of the extension block on the right side, the central position of the right side of the elastic sheet is fixedly connected with a convex block.

Preferably, the sealing device is provided as a left arc-shaped block and a right arc-shaped block.

Preferably, the inner side of the sealing device is covered and provided with a first sealing rubber pad.

Preferably, the diameter of the extension pipe is 0.8 times of the diameter of the perforation.

Preferably, the center position of the left side of the elastic sheet is fixedly connected with an operation block, and the outer side of the operation block is provided with anti-skid grains in a surrounding manner.

Preferably, the protruding block and the card slot are mutually engaged.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model utilizes the first sealing rubber pad to cover the outer side of the shaft seal, and utilizes the extrusion deformation during installation to play a role of secondary sealing, thereby effectively preventing the pollution problem caused by direct leakage when the shaft seal leaks;

2. the utility model discloses the extension tube passes second sealing rubber pad central point and puts the perforation when utilizing the installation for inside the cooling channel intercommunication of both sides utilized water source access device, to the bearing seal department of device cover the work of cooling down, prevent the deformation that the bearing seal department high temperature caused, thereby the effectual life who prolongs the pump body.

Drawings

Fig. 1 is a schematic view of the overall structure of a sealing device for a shaft seal of a fluid mechanical pump according to the present invention;

FIG. 2 is a schematic structural view of a sealing device of the sealing device for a shaft seal of a fluid mechanical pump according to the present invention;

fig. 3 is a schematic structural diagram of a1 in the sealing device for a shaft seal of a fluid mechanical pump according to the present invention;

fig. 4 is a schematic structural view of a second sealing rubber pad in the sealing device for the shaft seal of the fluid mechanical pump of the present invention.

In the figure: 1. a pump body; 2. a sealing device; 3. a shaft sleeve; 4. a water inlet pipe; 5. a water outlet pipe; 6. an extension block; 7. a hinge; 8. a movable plate; 9. a first sealing rubber pad; 10. a cooling channel; 11. an extension pipe; 12. a second sealing rubber pad; 13. perforating; 14. an elastic sheet; 15. a protruding block; 16. a clamping groove.

Detailed Description

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

Referring to fig. 1-4, the present invention provides a technical solution: a sealing device for a shaft seal of a fluid mechanical pump comprises a pump body 1, wherein a shaft sleeve 3 is fixedly arranged at the lower end of the pump body 1, the shaft sleeve 3 is convenient for the pump body 1 to carry out shaft seal, a sealing device 2 is arranged at the outer side of the shaft sleeve 3, the sealing device 2 is arranged into a left arc-shaped block and a right arc-shaped block, a first sealing rubber gasket 9 is covered and arranged at the inner side of the sealing device 2, cooling channels 10 are respectively arranged in the sealing device 2, the cooling channels 10 are convenient for water sources to enter for cooling, a water inlet pipe 4 is connected and arranged at the lower end of the cooling channel 10 at the right side, the water inlet pipe 4 is convenient for connecting with a main water pipe, a water outlet pipe 5 is connected and arranged at the lower end of the cooling channel 10 at the left side, the water outlet pipe 5, the right side cooling channel 10 upper end level fixed connection is provided with extension 11, extension 11 pipe diameter is 0.8 times of perforation 13 diameter, sealing device 2 is last both sides all are provided with extension piece 6, the right side extension piece 6 upper end fixed connection is provided with hinge 7, hinge 7 left side is provided with fly leaf 8, and fly leaf 8 rotates around hinge 7, the left side extension piece 6 left side central point puts and has seted up draw-in groove 16, the perpendicular fixed connection of fly leaf 8 left side lower extreme is provided with flexure strip 14, flexure strip 14 left side central point puts fixed connection and is provided with the operation piece to the operation piece outside is encircleed and is provided with anti-skidding line, flexure strip 14 right side central point puts fixed connection and is provided with salient piece 15, salient piece 15 and draw-in groove 16 block each other.

The working principle is as follows: when in use, the sealing device 2 is clamped at the outer side position of the shaft sleeve 3, the extension blocks 6 are mutually aligned, and the sealing device 2 is relatively extruded, so that the extension pipe 11 passes through the central position of the perforation hole 13, the second sealing rubber pad 12 is deformed, the diameter of the perforation hole 13 is expanded, then the wall of the perforation hole 13 is tightly attached to the outer side position of the extension pipe 11 to play a role of sealing and prevent water leakage, when the device is installed, the first sealing rubber pad 9 is covered at the outer side position of the shaft seal position, and the first sealing rubber pad 9 is extruded and deformed to play a role of secondary sealing when the device is installed, so that the pollution problem caused by direct liquid leakage can be effectively prevented when the shaft seal position leaks, the operation block is utilized to enable the elastic sheet 14 to be bent outwards, then the movable plate 8 is rotated to be covered at the joint of the extension blocks 6, the elastic sheet 14 is loosened, the elastic sheet 14, connect main water pipe with inlet tube 4, open main water pipe when starting pump body 1, utilize the water source to carry out the work of cooling down to the bearing seal department that the device covered, prevent the deformation that the too high temperature of bearing seal department caused to the effectual life who prolongs pump body 1.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. A sealing device for a shaft seal of a fluid mechanical pump comprises a pump body (1), and is characterized in that: the pump is characterized in that a shaft sleeve (3) is fixedly arranged at the lower end of the pump body (1), a sealing device (2) is arranged at the outer side of the shaft sleeve (3), a cooling channel (10) is arranged in the sealing device (2), a water inlet pipe (4) is connected to the lower end of the cooling channel (10) at the right side, a water outlet pipe (5) is connected to the lower end of the cooling channel (10) at the left side, a second sealing rubber pad (12) is arranged at the upper end in the cooling channel (10) at the left side, a through hole (13) is formed in the center of the second sealing rubber pad (12), an extension pipe (11) is horizontally and fixedly connected to the upper end of the cooling channel (10) at the right side, extension blocks (6) are arranged on the upper side and the lower side of the sealing device (2), a hinge (7, the left side extends piece (6) left side central point and puts and has seted up draw-in groove (16), the perpendicular fixed connection of fly leaf (8) left side lower extreme is provided with flexure strip (14), flexure strip (14) right side central point puts fixed connection and is provided with protruding piece (15).

2. The sealing device for a shaft seal of a fluid mechanical pump according to claim 1, wherein: the sealing device (2) is arranged into a left arc-shaped block and a right arc-shaped block.

3. The sealing device for a shaft seal of a fluid mechanical pump according to claim 1, wherein: the inner side of the sealing device (2) is covered with a first sealing rubber gasket (9).

4. The sealing device for a shaft seal of a fluid mechanical pump according to claim 1, wherein: the pipe diameter of the extension pipe (11) is 0.8 times of the diameter of the perforation (13).

5. The sealing device for a shaft seal of a fluid mechanical pump according to claim 1, wherein: the center position of the left side of the elastic piece (14) is fixedly connected with an operation block, and the outer side of the operation block is provided with anti-skid grains in a surrounding mode.

6. The sealing device for a shaft seal of a fluid mechanical pump according to claim 1, wherein: the protruding block (15) and the clamping groove (16) are mutually clamped.