CN218882583U

CN218882583U - Centrifugal pump machine seal with good sealing effect

Info

Publication number: CN218882583U
Application number: CN202222727681.4U
Authority: CN
Inventors: 滕止戈; 南广宁; 宋非
Original assignee: Fristam Pumps Taicang Co ltd
Current assignee: Fristam Pumps Taicang Co ltd
Priority date: 2022-10-17
Filing date: 2022-10-17
Publication date: 2023-04-18
Anticipated expiration: 2032-10-17

Abstract

The utility model discloses an airtight effectual centrifugal pump machine seals, including the axle sleeve, the holding ring cover is established axle sleeve one end, the inside appearance chamber that has seted up of holding ring, hold the intracavity and install the spring, the solid fixed base cover is established outside the axle sleeve, solid fixed base both ends integrated into one piece is provided with the fixed block, axle sleeve tip cover is equipped with solid fixed ring, solid fixed base is located between holding ring and the solid fixed ring, gu fixed ring opens outward and is equipped with thread groove A, thread groove A has seted up six groups and the ring type array outside solid fixed ring. The utility model discloses a to spring and medium separation, improved the leakproofness that centrifugal pump machine sealed, solved current spring and medium contact back, the card is inserted through setting up to the problem that machine seal life is low, is convenient for seal and the shaft coupling is installed centrifugal pump machine.

Description

Centrifugal pump machine seal with good sealing effect

Technical Field

The utility model relates to a centrifugal pump mechanical seal technical field, in particular to airtight effectual centrifugal pump machine seals.

Background

The centrifugal pump works by utilizing the rotation of an impeller to enable water to generate centrifugal motion; before the water pump is started, the pump shell and the water suction pipe are filled with water, then the motor is started, the pump shaft drives the impeller and the water to rotate at a high speed, the water is thrown to the outer edge of the impeller and flows into a water pressing pipeline of the water pump through a flow channel of the volute-shaped pump shell, the pump shaft of the centrifugal pump is generally in rotating connection with the pump shell through a mechanical seal, and the mechanical seal is used for preventing the water in the pump shell from leaking out of the pump shaft.

The patent number cn201910731050.X discloses a centrifugal pump machine seal structure, which comprises a mounting frame, a fixed ring and a movable ring, wherein the fixed ring and the movable ring are arranged inside the mounting frame, one end of the mounting frame is connected with a pump body of a centrifugal pump, the other end of the mounting frame is connected with a motor, a pump shaft is arranged on the pump body, through grooves are formed in the fixed ring and the movable ring, and the pump shaft penetrates through the through grooves and is connected to the motor; one end of the mounting frame is provided with a mounting flange, and the mounting flange is connected with the pump body through mounting screws; the motor is provided with a connecting flange, and the connecting flange is connected with the mounting frame through mounting screws; the mounting flange is provided with a connecting cylinder, and the fixed ring is mounted in the connecting cylinder; the movable ring is arranged on the mounting frame and is connected with the fixed ring; according to the invention, the pump body is connected with the motor through the mounting frame, the fixed ring and the movable ring are arranged in the mounting frame, so that the pump shaft is in sealing connection, water in the pump shell is prevented from leaking out of the pump shaft, and the sealing effect is good

The rotating ring in the existing mechanical seal structure rotates along with the rotation of the pump shaft, the spring is in contact with a medium, the elasticity of the spring is weakened, the sealing effect is further influenced, the damage of a sealing piece and the leakage of a pump body are easily caused, and the mechanical seal structure is short in service life.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides an airtight effectual centrifugal pump machine seals, through to spring and medium separation, solved current spring and medium contact back, the problem that machine seals life is low can effectively solve the problem in the background art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a centrifugal pump machine seals airtight effectual, includes the axle sleeve, and the holding ring cover is established axle sleeve one end, the holding chamber has been seted up to the holding ring inside, install the spring in holding the chamber, the fixed base cover is established outside the axle sleeve, fixed base both ends integrated into one piece is provided with the fixed block, axle sleeve tip cover is equipped with solid fixed ring, the fixed base is located between holding ring and the solid fixed ring, gu fixed ring opens outward and is equipped with thread groove A, thread groove A has seted up six groups and the ring type array is outside solid fixed ring.

Furthermore, an inserting card is inserted at the other end of the shaft sleeve, a through groove is formed in one end of the inserting card, and a supporting seat is arranged at the other end of the inserting card; through setting up the card of inserting, be convenient for install centrifugal pump machine seals and shaft coupling.

Furthermore, a threaded groove B is formed in the end portion of the shaft sleeve, a bolt penetrates through the fixing block and is in threaded connection with the threaded groove A and the threaded groove B, a positioning column is integrally formed in the end portion of the shaft sleeve, and a positioning groove for assembling the positioning ring is formed in the side wall of the positioning ring; the fixing ring is sleeved at the end part of the shaft sleeve, the bolt penetrates through the fixing block and rotates in the thread groove A and the thread groove B, so that the driving loss is reduced, the positioning groove is inserted into the positioning column, and the positioning ring is limited.

Furthermore, a limiting ring is inserted in the positioning ring, and an O-shaped ring is sleeved outside the limiting ring; the O-shaped ring is sleeved outside the limiting ring and is inserted into the fixing base, and the sealing effect is guaranteed by the arranged O-shaped ring.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses when using, peg graft the constant head tank in the reference column, it is spacing to carry out the holding ring, peg graft the spring in the locating ring, the spring does not contact with the medium, make the life who seals the machine lasting, establish fixed base cover on the axle sleeve, establish O type circle cover outside the spacing ring and peg graft the spacing ring in fixed baseplate again, the O type circle of setting has guaranteed sealed effect, establish fixed ring cover at the axle sleeve tip again, the bolt runs through the fixed block and rotates in thread groove A and thread groove B, with reduce the drive loss, through separating spring and medium, the leakproofness that the centrifugal pump sealed has been improved, after having solved current spring and medium contact, the problem that the machine seals life is low.

2. The utility model discloses seal the installation back to centrifugal pump machine, mention the axial pump, insert and insert the card, the plug-in card piece supporting seat supports the axle sleeve, with plug-in card piece fixed height, installs the shaft coupling again, the shaft coupling installation back, the axial pump is locked, can not fall, prevents axle and base friction, takes out the plug-in card piece again, inserts the card through setting up, is convenient for seal centrifugal pump machine and shaft coupling installation.

Drawings

FIG. 1 is a front view of a centrifugal pump seal with a good sealing effect of the present invention;

fig. 2 is an expanded schematic view of a positioning ring of a centrifugal pump seal with a good sealing effect;

fig. 3 is the utility model relates to an airtight effectual fixed baseplate inside extension sketch map of centrifugal pump machine seal.

In the figure: 1. a shaft sleeve; 2. a positioning ring; 3. a fixed base; 4. a fixed block; 5. a bolt; 6. a fixing ring; 7. a thread groove A; 8. inserting a card; 9. a through groove; 10. a supporting seat; 11. a positioning column; 12. positioning a groove; 13. a cavity; 14. a spring; 15. a thread groove B; 16. a limiting ring; 17. and an O-shaped ring.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1-3, a centrifugal pump machine seal with good sealing effect comprises a shaft sleeve 1, wherein a positioning ring 2 is sleeved at one end of the shaft sleeve 1, a containing cavity 13 is formed in the positioning ring 2, a spring 14 is installed in the containing cavity 13, a fixing base 3 is sleeved outside the shaft sleeve 1, fixing blocks 4 are integrally formed at two ends of the fixing base 3, a fixing ring 6 is sleeved at the end portion of the shaft sleeve 1, the fixing base 3 is located between the positioning ring 2 and the fixing ring 6, a thread groove A7 is formed in the fixing ring 6 in an outward opening mode, six groups of thread grooves A7 are formed in the thread groove A7, and a ring array is arranged outside the fixing ring 6.

The other end of the shaft sleeve 1 is inserted with an inserting card 8, one end of the inserting card 8 is provided with a through groove 9, and the other end of the inserting card 8 is provided with a supporting seat 10; through setting up insert card piece 8, be convenient for install centrifugal pump machine seal and shaft coupling.

The end part of the shaft sleeve 1 is provided with a thread groove B15, the bolt 5 penetrates through the fixed block 4 and is in threaded connection with the thread groove A7 and the thread groove B15, the end part of the shaft sleeve 1 is integrally provided with a positioning column 11, and the side wall of the positioning ring 2 is provided with a positioning groove 12 for assembling the positioning ring 2; fix ring 6 cover and establish at 1 tip of axle sleeve, bolt 5 runs through fixed block 4 and rotates in thread groove A7 and thread groove B15 to reduce the drive loss, peg graft constant head tank 12 in reference column 11, carry on spacingly to holding ring 2.

A limiting ring 16 is inserted into the positioning ring 2, and an O-shaped ring 17 is sleeved outside the limiting ring 16; the O-shaped ring 17 is sleeved outside the limiting ring 16, the limiting ring 16 is inserted into the fixing base 3, and the sealing effect is guaranteed by the arranged O-shaped ring 17.

It should be noted that, the utility model relates to a centrifugal pump machine seals that airtight effectual, when using, peg graft constant head tank 12 in reference column 11, it is spacing to holding ring 2, peg graft spring 14 in holding ring 2, spring 14 does not contact with the medium, make the life of machine seal lasting, establish 3 covers of fixed baseplate on axle sleeve 1, establish O type circle 17 cover outside spacing ring 16 and peg graft spacing ring 16 in fixed baseplate 3 again, the O type circle 17 of setting has guaranteed sealed effect, establish 6 covers of solid fixed ring at axle sleeve 1 tip again, bolt 5 runs through fixed block 4 and rotates in thread groove A7 and thread groove B15, in order to reduce the drive loss, after the installation of centrifugal pump machine seal, mention the axle pump, insert card 8, piece 8 supporting seat 10 supports axle sleeve 1, with inserting card 8 fixed height, install the shaft coupling again, after the shaft coupling installation, the axle pump is locked, can not fall, prevent axle and base friction, insert card 8 again and take out.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an airtight effectual centrifugal pump machine seals, includes axle sleeve (1), its characterized in that, holding ring (2) cover is established axle sleeve (1) one end, holding ring (2) inside has been seted up and has been held chamber (13), install spring (14) in holding chamber (13), fixed baseplate (3) cover is established outside axle sleeve (1), fixed baseplate (3) both ends integrated into one piece is provided with fixed block (4), axle sleeve (1) tip cover is equipped with solid fixed ring (6), fixed baseplate (3) are located between holding ring (2) and solid fixed ring (6), gu fixed ring (6) are opened outward and are equipped with thread groove A (7), thread groove A (7) have been seted up six groups and the loop type array outside solid fixed ring (6).

2. The centrifugal pump mechanical seal with good sealing effect as claimed in claim 1, wherein: the other end of the shaft sleeve (1) is inserted with an inserting card (8), one end of the inserting card (8) is provided with a through groove (9), and the other end of the inserting card (8) is provided with a supporting seat (10).

3. The centrifugal pump mechanical seal with good sealing effect as claimed in claim 1, wherein: a thread groove B (15) is formed in the end portion of the shaft sleeve (1), and a bolt (5) penetrates through the fixing block (4) and is connected to the thread groove A (7) and the thread groove B (15) in a threaded mode.

4. The centrifugal pump mechanical seal with good sealing effect as claimed in claim 1, wherein: a limiting ring (16) is inserted in the positioning ring (2), and an O-shaped ring (17) is sleeved outside the limiting ring (16).

5. The centrifugal pump machine seal with good sealing effect as claimed in claim 1, wherein: the end part of the shaft sleeve (1) is integrally provided with a positioning column (11), and the side wall of the positioning ring (2) is provided with a positioning groove (12) for assembling the positioning ring (2).