CN210829839U

CN210829839U - Mechanical seal for alkali liquor axial-flow pump

Info

Publication number: CN210829839U
Application number: CN201921641273.9U
Authority: CN
Inventors: 施阳春; 祝智勇
Original assignee: Kunshan Fu Industrial Equipment Co ltd
Current assignee: Kunshan Fu Industrial Equipment Co ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-06-23
Anticipated expiration: 2029-09-29

Abstract

The utility model discloses a mechanical seal for alkali lye axial-flow pump belongs to the mechanical seal field, including first connecting piece and second connecting piece, first mounting groove has been seted up to one side of first connecting piece, the second connecting piece top is passed through coupling spring and is connected fixedly with first mounting groove, the bottom welding of second connecting piece has the installation piece, the second connecting piece pass the installation piece through first screw and with set up the second mounting groove fixed connection on the third connecting piece, first connecting piece, second connecting piece and third connecting piece formula as an organic whole pass through the surface of first connecting piece welding at the fastener. The utility model discloses an optimize current mechanical seal structure, make each part friction power consumption reduce, avoided causing adverse effect to seal structure because of vibrations under the circumstances of guaranteeing sealed effect, have higher practicality.

Description

Mechanical seal for alkali liquor axial-flow pump

Technical Field

The utility model relates to a mechanical seal field specifically is a mechanical seal for alkali lye axial-flow pump.

Background

The axial-flow pump enables liquid to be conveyed along the axial direction by means of acting force of blades of the rotating impeller on the liquid, and can be matched with a control mode electric control cabinet for controlling two to four, so that the automatic closing of the pump and the automatic starting of a standby pump can be realized when a fault occurs; and functions such as fault signals and the like are reserved, and high reliability of operation is guaranteed.

Axial flow pumps in the alkali liquor device are generally sealed by packing, when the pumps are started, the shaft and the packing are always worn, and a gap is formed after a few days, so that alkali liquor flows outwards, and the axial flow pumps need to be replaced again, thereby wasting time and energy; resulting in many maintenance times and frequent replacement. The maintenance cost is high within one year, and the alkali liquor around the pump flows out due to easy leakage, thereby polluting the environment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a mechanical seal for alkali lye axial-flow pump through optimizing current mechanical seal structure, makes each part friction power consumption reduce, has avoided leading to the fact adverse effect to seal structure because of vibrations under the circumstances of guaranteeing sealed effect, has higher practicality.

The utility model provides a following technical scheme: a mechanical seal for an alkali liquor axial-flow pump comprises a first connecting piece, a limiting sleeve and a second connecting piece, wherein a first groove is formed in the lower half portion of the first connecting piece, a second rubber pad is embedded in the first groove, a first mounting groove is formed in one side of the first connecting piece, the top of the second connecting piece is fixedly connected with the first mounting groove formed in the first connecting piece through a connecting spring, the surface of the second connecting piece is in contact with the second rubber pad, a mounting block is welded at the bottom of the second connecting piece, the second connecting piece penetrates through the mounting block through a first screw and is fixedly connected with a second mounting groove formed in a third connecting piece, a second groove is formed in the surface of the third connecting piece, a third rubber pad is embedded in the second groove, the third rubber pad is in surface contact with the second connecting piece, a third groove is formed in one side surface of the third connecting piece, a fourth rubber pad is embedded in the third groove;

the first connecting piece, the second connecting piece and the third connecting piece are welded on the surface of the fastener through the first connecting piece in an integrated mode, the fourth rubber pad is in contact with the surface of the fastener, and the fastener is assembled on the axial flow pump base body through the second screw.

Preferably, two inserting groove blocks are welded on the surfaces of the two sides of the fastener respectively, and the limiting sleeve is sleeved outside the second screw and is fixedly inserted into the inserting groove blocks through the protruding edges.

Preferably, the limiting sleeve and the protruding edge are of an integrated structure made of steel structure materials.

Preferably, a first rubber pad is bonded to the bottom of the first connecting piece, and the thickness of the first rubber pad is at least 5 mm.

Preferably, a fifth rubber pad is embedded in the bottom of the fastener.

Preferably, the thicknesses of the second rubber pad, the third rubber pad, the fourth rubber pad and the fifth rubber pad are all 0.5-0.6 mm.

The utility model discloses a technological effect and advantage:

1. the utility model optimizes the existing mechanical sealing structure, and rubber pads are embedded between the assembly parts, so that a certain extrusion effect is provided between the connection parts through the rubber pads, a certain deformation space exists in the position relation between the connection parts, and the friction power consumption is reduced, thereby optimizing the effect of the whole mechanical sealing and improving the anti-seismic performance; the sealing structure is prevented from being adversely affected due to vibration under the condition of ensuring the sealing effect, so that the service life of the whole structure is prolonged, the maintenance period is long, and the sealing structure has high practicability.

2. The sealing performance is improved by the cooperation of the fasteners, the good sealing performance can be kept for equipment running for a long time, and the leakage amount is small.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of a first connecting member, a second connecting member and a third connecting member of the present invention;

FIG. 3 is a schematic structural diagram of positions of the first connecting member, the second connecting member and the third connecting member after the assembly is completed;

fig. 4 is a schematic structural view of a second screw assembling portion of the present invention.

Description of reference numerals: 1. a first connecting member; 101. a first groove; 102. a first mounting groove; 2. a second connecting member; 201. a connecting spring; 202. mounting blocks; 3. a third connecting member; 301. a second groove; 302. A second mounting groove; 303. a third groove; 4. a first rubber pad; 5. a second rubber pad; 6. a third rubber pad; 7. a fourth rubber pad; 8. a first screw; 9. an axial flow pump substrate; 10. a mounting surface; 11. a fastener; 12. inserting a groove block; 13. a second screw; 14. a limiting sleeve; 15. a raised edge; 16. and a fifth rubber pad.

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.

The utility model provides a mechanical seal for an alkali liquor axial-flow pump as shown in figures 1-4, which comprises a first connecting piece 1, a spacing sleeve 14 and a second connecting piece 2, wherein the lower half part of the first connecting piece 1 is provided with a first groove 101, a second rubber pad 5 is embedded in the first groove 101, one side of the first connecting piece 1 is provided with a first mounting groove 102, the top part of the second connecting piece 2 is fixedly connected with the first mounting groove 102 arranged on the first connecting piece 1 through a connecting spring 201, the surface of the second connecting piece 2 is contacted with the second rubber pad 5, the bottom part of the second connecting piece 2 is welded with a mounting block 202, the second connecting piece 2 passes through the mounting block 202 through a first screw 8 and is fixedly connected with a second mounting groove 302 arranged on the third connecting piece 3, the surface of the third connecting piece 3 is provided with a second groove 301, and a third rubber pad 6 is embedded in the second groove 301, the third rubber pad 6 is in contact with the surface of the second connecting piece 2, a third groove 303 is formed in the surface of one side of the third connecting piece 3, and a fourth rubber pad 7 is embedded in the third groove 303;

the first connecting piece 1, the second connecting piece 2 and the third connecting piece 3 are welded on the surface of the fastening piece 11 through the first connecting piece 1 in an integrated mode, the fourth rubber pad 7 is in surface contact with the fastening piece 11, the fastening piece 11 is assembled on the axial flow pump base body 9 through the second screw 13, and the fifth rubber pad 16 is embedded in the bottom of the fastening piece 11. Therefore, a certain relaxation effect is provided, a certain deformation space exists between the fastener 11 and the axial flow pump base body 9, and damage caused by collision is avoided.

The bottom of the first connecting piece 1 is bonded with a first rubber pad 4, the thickness of the first rubber pad 4 is at least 5mm, and after the device is integrally assembled, the space between the first connecting piece 1 and the mounting surface 10 is relieved, so that the friction power of the axial flow pump base body 9 in use is effectively reduced.

In order to increase the structural stability of the fastening piece 11 and the axial-flow pump base body 9, two insertion groove blocks 12 are welded on the two side surfaces of the fastening piece 11 respectively, and the limiting sleeve 14 is sleeved outside the second screw 13 and is fixed with the insertion groove blocks 12 through the protruding edges 15 in an insertion mode, so that a certain protection effect is provided for the second screw 13. And stop collar 14 and bellying 15 are the integrated structure that steel construction material made, have good intensity and rigidity to this provides effective protection to the assembly of second screw 13.

The thicknesses of the second rubber pad 5, the third rubber pad 6, the fourth rubber pad 7 and the fifth rubber pad 16 are all 0.5 mm-0.6 mm. Can receive the extrusion and provide elasticity when each connecting piece assembles for the assembly structure of axial-flow pump base member 9 has certain mild space, takes place excessive wearing and tearing between each part when avoiding the device to use.

The working principle is that the first connecting piece 1 is connected with the second connecting piece 2 through the connecting spring 201, meanwhile, the second rubber pad 5 arranged on the first connecting piece 1 is in surface contact with the second connecting piece 2, and then the third rubber pad 6 arranged on the third connecting piece 3 is in contact with the second connecting piece 2 by utilizing the first screw 8 to penetrate through the mounting block 202 arranged on the second connecting piece 2 and to be fixedly connected with the second mounting groove 302.

During assembly, the first connecting piece 1, the second connecting piece 2, the third connecting piece 3 and the fastening piece 11 penetrate through the fastening piece 11 through the second screw 13 and are fixedly connected with the axial flow pump base body 9, so that the fourth rubber pad 7 arranged on the third connecting piece 3 is pressed and attached to the surface of the fastening piece 11, and at the moment, a basic assembly structure is completed. The axial flow pump base body 9 is placed on the mounting surface 10, and the entire device is fixed on the mounting surface 10 through the first connecting piece 1 by using bolts and nuts, so that the entire mechanical sealing structure is formed. When the axial-flow pump base body 9 is in operation, the vibration generated by the axial-flow pump base body can provide certain buffering through the rubber pads at the positions of the connecting pieces, a certain deformation space exists in the position relation between the connecting pieces, the effect of the whole mechanical seal is optimized, the adverse effect on the sealing structure due to the vibration is avoided under the condition of ensuring the sealing effect, the service life of the whole structure is prolonged, the maintenance frequency is reduced, and the axial-flow pump base body has higher practicability.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a mechanical seal for alkali lye axial-flow pump, includes first connecting piece (1), stop collar (14) and second connecting piece (2), its characterized in that: the lower half part of the first connecting piece (1) is provided with a first groove (101), a second rubber pad (5) is embedded in the first groove (101), one side of the first connecting piece (1) is provided with a first mounting groove (102), the top of the second connecting piece (2) is fixedly connected with the first mounting groove (102) arranged on the first connecting piece (1) through a connecting spring (201), the surface of the second connecting piece (2) is contacted with the second rubber pad (5), the bottom of the second connecting piece (2) is welded with a mounting block (202), the second connecting piece (2) penetrates through a mounting block (202) through a first screw (8) and is fixedly connected with a second mounting groove (302) arranged on a third connecting piece (3), the surface of the third connecting piece (3) is provided with a second groove (301), and a third rubber pad (6) is embedded in the second groove (301), the third rubber pad (6) is in contact with the surface of the second connecting piece (2), a third groove (303) is formed in the surface of one side of the third connecting piece (3), and a fourth rubber pad (7) is embedded in the third groove (303);

the first connecting piece (1), the second connecting piece (2) and the third connecting piece (3) are welded on the surface of the fastening piece (11) through the first connecting piece (1) in an integrated mode, the fourth rubber pad (7) is in surface contact with the fastening piece (11), and the fastening piece (11) is assembled on the axial flow pump base body (9) through the second screw (13).

2. The mechanical seal for a lye axial flow pump according to claim 1 wherein: two inserting groove blocks (12) are welded on the surfaces of the two sides of the fastener (11), and the limiting sleeve (14) is sleeved outside the second screw (13) and is fixedly inserted into the inserting groove blocks (12) through the raised edges (15).

3. A mechanical seal for a lye axial flow pump according to claim 2 wherein: the limiting sleeve (14) and the protruding edge (15) are of an integrated structure made of steel structural materials.

4. The mechanical seal for a lye axial flow pump according to claim 1 wherein: the bottom of the first connecting piece (1) is bonded with a first rubber pad (4), and the thickness of the first rubber pad (4) is at least 5 mm.

5. The mechanical seal for a lye axial flow pump according to claim 1 wherein: and a fifth rubber pad (16) is embedded in the bottom of the fastener (11).

6. The mechanical seal for a lye axial flow pump according to claim 1 wherein: the thicknesses of the second rubber pad (5), the third rubber pad (6), the fourth rubber pad (7) and the fifth rubber pad (16) are all 0.5-0.6 mm.