CN217327799U - Mechanical seal structure of circulating water pump - Google Patents

Abstract

The application relates to the technical field of mechanical sealing, in particular to a mechanical sealing structure of a circulating water pump, which comprises a static ring arranged on an output shaft of a motor and a movable ring sleeved on a pump shaft, wherein a base is fixedly arranged on the pump shaft, a spring is arranged between the movable ring and the base, the movable ring and the pump shaft form a friction pair, a fixed ring is fixedly sleeved at one end, close to the static ring, of the movable ring, a pulling ring is sleeved at the middle part of the static ring, a plurality of telescopic assemblies are uniformly arranged between the fixed ring and the pulling ring along the circumferential direction, one end of each telescopic assembly is detachably connected with the corresponding fixed ring, and the other end of each telescopic assembly is detachably connected with the corresponding pulling ring; one end of the telescopic component, which is close to the static ring, is provided with a clamping piece; one side of the outer surface of the static ring, which is far away from the dynamic ring, is provided with a tight supporting assembly, and one side of the tight supporting assembly, which is close to the pulling ring, is abutted against the pulling ring. The realization rotating ring that this application has closely laminates with quiet ring, reduces the effect of maintenance number of times.

Description

Mechanical sealing structure of circulating water pump

Technical Field

The application relates to the technical field of mechanical sealing, in particular to a mechanical sealing structure of a circulating water pump.

Background

The mechanical seal is a device for preventing fluid leakage, which is formed by at least one pair of end faces perpendicular to the rotation axis, and the end faces are kept in fit and relatively slide under the action of fluid pressure and the elastic force (or magnetic force) of a compensation mechanism and the cooperation of an auxiliary seal. The mechanical seal is a shaft seal device of a rotating machine. Such as centrifugal pumps, centrifuges, reaction kettles, compressors, and the like. Since the drive shaft extends through the inside and outside of the apparatus, there is a circumferential gap between the shaft and the apparatus through which the medium in the apparatus leaks out, and if the pressure in the apparatus is lower than atmospheric pressure, air leaks into the apparatus, so that a shaft seal device must be provided to prevent leakage.

In recent years, in order to save energy, reduce consumption and save water, enterprises generally recycle turbid water and reclaimed water, and the problem of shortage of production water is greatly relieved. However, the quality of the recycled circulating water is changed, the quality of the circulating water is poor, the mechanical seal of the circulating water pump has more water leakage phenomena, and the maintenance frequency is increased. The reason that the mechanical seal leaks water is found out through multiple times of maintenance, not the reason that the mechanical seal is abraded and the spring fails, but the mechanical seal is clamped due to more water scale in water, a certain gap is formed between the movable ring and the static ring, and water leakage occurs.

In addition, the installation clearance adjustment of the mechanical seal is difficult to ensure that the seal is properly adjusted at one time, the seal is heated and burned out when the clearance adjustment is too large, and water leakage occurs when the clearance adjustment is too small; if when the mechanical seal clearance is adjusted again, the upper cover of the water pump needs to be detached again and then adjusted, so that the maintenance is very complicated, the workload is large, secondary maintenance can be realized, the maintenance time of the water pump is prolonged, the effective utilization rate of the circulating water pump is reduced, and the water leakage phenomenon can occur 1-2 months after the new mechanical seal is replaced.

SUMMERY OF THE UTILITY MODEL

In order to realize that rotating ring and quiet ring are closely laminated, reduce the maintenance number of times, this application provides a circulating water pump mechanical seal structure.

The application provides a circulating water pump mechanical seal structure adopts following technical scheme:

a mechanical sealing structure of a circulating water pump comprises a static ring and a dynamic ring, wherein the static ring is mounted on an output shaft of a motor, the dynamic ring is sleeved on a pump shaft, a base is fixedly mounted on the pump shaft, a spring is mounted between the dynamic ring and the base, the dynamic ring and the pump shaft form a friction pair, a fixing ring is fixedly sleeved at one end, close to the static ring, of the dynamic ring, a pulling ring is sleeved at the middle part of the static ring, a plurality of telescopic assemblies are uniformly arranged between the fixing ring and the pulling ring along the circumferential direction, one end of each telescopic assembly is detachably connected with the corresponding fixing ring, and the other end of each telescopic assembly is detachably connected with the corresponding pulling ring; one end of the telescopic assembly, which is close to the static ring, is provided with a clamping piece; and one side of the outer surface of the static ring, which is far away from the dynamic ring, is provided with a tight supporting assembly, and one side of the tight supporting assembly, which is close to the pulling ring, is abutted against the pulling ring.

Through adopting above-mentioned technical scheme, solid fixed ring and pulling ring are established to the cover respectively on the rotating ring and on the quiet ring, set up flexible subassembly between solid fixed ring and pulling ring, realize that the rotating ring is close to or when keeping away from quiet ring motion, flexible subassembly can stretch out and draw back, and can not influence the rotating ring and the original sealing function of quiet ring. Because solid fixed ring follow-up hoop is to pulling when the ring direction moves, the pulling ring can receive a thrust, sets up in pulling ring one side and supports tight subassembly, can effectively prevent the pulling ring because of receiving the thrust and to keeping away from solid fixed ring direction drunkenness, and then play the effect of location, when guaranteeing that fixed hoop is to pulling the ring direction and moves, flexible subassembly is in flexible state. And when mechanical seal structure interior incrustation scale is more, the rotating ring produces during certain clearance with quiet ring, it sets up chucking spare to be close to quiet ring one end at flexible subassembly, chucking spare will stretch out and draw back to the certain degree, because of the flexible subassembly chucking that the incrustation scale can not stretch out and draw again, the rethread drags to draw the rotating ring to keeping away from the rotating ring direction, realize that flexible subassembly pulling fixed hoop is close to the removal of pulling ring direction, and then realize that the rotating ring is close to the back and closely laminate with quiet ring to quiet ring, thereby reach sealed purpose, the problem of leaking has been solved, maintenance frequency has been reduced.

Optionally, the abutting assembly comprises an abutting block and a fixing screw rod, the fixing screw rod is fixedly connected with one surface of the abutting block, a fixing screw hole is correspondingly formed in the stationary ring, the fixing screw rod penetrates through the fixing screw hole and is in threaded connection with the fixing screw hole, and one side of the abutting block abuts against the pulling ring.

Through adopting above-mentioned technical scheme, fixed set up clamping screw on supporting the piece, support tight piece and pass through clamping screw and fix on quiet ring surface to support the pulling ring, make the pulling ring be difficult for because of receiving thrust and to keeping away from solid fixed ring direction drunkenness, both realized supporting the purpose of pulling ring, but direct rotating clamping screw takes off supporting the piece from quiet ring surface again, convenient and fast again labour saving and time saving.

Optionally, the abutting assemblies are multiple and are uniformly distributed along the circumferential direction of the stationary ring.

Through adopting above-mentioned technical scheme, along quiet a plurality of tight subassemblies that support of ring circumference evenly distributed, a plurality of tight subassemblies that support simultaneously with the pulling ring butt to support the pulling ring more stably effectively, make in the pulling ring hand even, difficult emergence eccentric phenomenon.

Optionally, flexible subassembly includes dead lever, first telescopic link and second telescopic link, the dead lever is close to pulling ring one end and can dismantle with the pulling ring and be connected, the second telescopic link is close to solid fixed ring one end and can dismantle with solid fixed ring and be connected, first telescopic link is flexible in the dead lever, the second telescopic link is flexible in first telescopic link.

Through adopting above-mentioned technical scheme, flexible subassembly adopts the mode of dead lever, first telescopic link and the hookup of second telescopic link multisection to stretch out and draw back, and such connected mode makes each section flexible section become short and small, and is not only small and exquisite nimble, and convenient flexible can make whole dead lever be located quiet ring one side moreover, makes things convenient for the later stage just can operate the chucking spare on the quiet ring through opening quiet ring gland.

Optionally, the chucking spare is the chucking bolt, the chucking screw has been seted up to correspondence on the dead lever, waist type hole has been seted up to correspondence along the axial on the first telescopic link, the chucking bolt passes chucking screw and waist type hole and second telescopic link butt in proper order.

Through adopting above-mentioned technical scheme, the chucking bolt passes the chucking screw, passes waist type hole and second screw rod butt again, and chucking bolt and chucking screw threaded connection screw the chucking bolt, and it is fixed with dead lever, first telescopic link and second telescopic link just to realize the chucking bolt, makes first telescopic link and second telescopic link can not stretch out and draw back again to conveniently stimulate fixed hoop and be close to quiet ring direction motion, realize the purpose that the rotating ring is close to quiet ring.

Optionally, a tightening groove is axially formed in the second telescopic rod, and the clamping bolt is abutted to the tightening groove.

Through adopting above-mentioned technical scheme, offer along the axial on the second telescopic link and support tight groove, make the head of the clamping bolt move along the length direction who supports tight groove all the time, not only play spacing effect, make the head of the clamping bolt firmly inlay into in addition and support tight groove steadily, reach stable purpose.

Optionally, a first fixing hole is formed in the fixing ring, a second fixing hole is formed in the pulling ring, the second telescopic rod penetrates through the first fixing hole, the fixing rod penetrates through the second fixing hole, a stop block is arranged on one side, far away from the pulling ring, of the fixing ring, and the second telescopic rod is close to one end of the fixing ring and fixedly connected with the stop block.

Through adopting above-mentioned technical scheme, the second telescopic link passes first fixed orifices, and the dead lever passes the second fixed orifices, and first fixed orifices and second fixed orifices are passed respectively at telescopic component both ends promptly, and the second telescopic link is supported by the dog again, realizes that the second telescopic link can be dismantled with solid fixed ring and be connected, convenient dismantlement or installation.

Optionally, a thread is formed at one end, close to the pulling ring, of the fixing rod, a fixing nut is sleeved on the fixing rod, and the fixing rod penetrates through the second fixing hole and then is in threaded connection with the fixing nut.

Through adopting above-mentioned technical scheme, flexible subassembly passes from first fixed orifices one side, wears out the back from first fixed orifices one side again, and on the dead lever was located to the fixed nut cover and with dead lever threaded connection to realize that the dead lever can dismantle with the pulling ring and be connected, such connected mode not only can be according to the distance of itself between rotating ring and the quiet ring, convenient dismantlement or installation moreover.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the movable ring and the static ring are respectively sleeved with the fixed ring and the pulling ring, and the telescopic assembly is arranged between the fixed ring and the pulling ring, so that the telescopic assembly can be stretched when the movable ring moves close to or away from the static ring; one side of the pulling ring is provided with a tight-supporting component, so that the pulling ring can be effectively prevented from moving towards the direction far away from the fixed ring due to the thrust of the telescopic component; set up chucking spare near quiet ring one end at flexible subassembly, the chucking spare will stretch out and draw back to the flexible subassembly chucking of certain degree, and the rethread drags the pulling movable ring to keeping away from the movable ring direction, realizes that the fixed hoop of flexible subassembly pulling is close to the pulling ring direction and removes, and then realizes that the movable ring closely laminates with quiet ring after being close to quiet ring to reach sealed purpose, solved the problem of leaking, reduced the maintenance number of times.

2. Through fixed set up clamping screw on supporting the piece, support tight piece and pass through clamping screw to fix on quiet ring surface to support the pulling ring, make the pulling ring be difficult for because of receiving thrust and to keeping away from solid fixed ring direction drunkenness, both realized supporting the purpose of pulling ring, but direct rotating clamping screw will support the piece again and take off from quiet ring surface, convenient and fast is labour saving and time saving again.

3. Pass chucking screw and waist type hole and second screw rod butt in proper order through the chucking bolt, the chucking bolt of screwing just realizes that the chucking bolt is fixed dead lever, first telescopic link and second telescopic link, makes first telescopic link and second telescopic link can not stretch out and draw back again to conveniently stimulate fixed ring to be close to quiet ring direction motion, realize the purpose that the rotating ring is close to quiet ring.

Drawings

Fig. 1 is a schematic view of a mechanical seal structure of a circulating water pump.

Fig. 2 is a schematic structural view of the telescopic assembly of the present application.

Fig. 3 is a schematic structural diagram of the fastening assembly of the present application.

Description of reference numerals: 1. a stationary ring; 11. fixing screw holes; 2. a moving ring; 3. a base; 4. a spring; 5. a fixing ring; 51. a first fixing hole; 6. pulling the ring; 61. a second fixing hole; 7. a telescopic assembly; 71. fixing the rod; 711. clamping the screw hole; 712. fixing a nut; 72. a first telescopic rod; 721. a kidney-shaped hole; 73. a second telescopic rod; 731. tightly pressing the groove; 732. a stopper; 8. clamping the bolt; 9. a propping component; 91. a propping block; 92. fixing the screw rod; 10. and a pump shaft.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses circulating water pump mechanical seal structure. Referring to fig. 1, a circulating water pump mechanical seal structure, including installing stationary ring 1 on the motor output shaft and establishing the rotating ring 2 on pump shaft 10 at the cover, fixed mounting has base 3 on the pump shaft 10, installs spring 4 between rotating ring 2 and base 3, and rotating ring 2 is for pump shaft 10 axial motion, and stationary ring 1 is static for pump shaft 10, and stationary ring 1 surface still overlaps and is equipped with stationary ring 1 gland, and rotating ring 2 and pump shaft 10 form the friction pair to play sealed effect.

A fixed ring 5 is fixedly sleeved at one end of the movable ring 2 close to the static ring 1, the fixed ring 5 and the static ring 1 are integrally formed, a pulling ring 6 is sleeved at the middle part of the static ring 1, and the pulling ring 6 can axially slide relative to the static ring 1; a plurality of flexible subassemblies 7 are arranged along the pump shaft 10 direction between solid fixed ring 5 and the pulling ring 6, and a plurality of flexible subassemblies 7 are along solid fixed ring 5 and 6 circumference evenly distributed of pulling ring, and a plurality of flexible subassembly 7 one end all can be dismantled with solid fixed ring 5 and be connected, and the other end all can be dismantled with pulling ring 6 and be connected.

Because the existence of incrustation scale, flexible subassembly 7 can not stretch out and draw back after stretching out and drawing back to the certain degree again, has certain clearance between rotating ring 2 and the quiet ring 1, for the convenience with flexible subassembly 7 to being close to the pulling of 1 direction of quiet ring, flexible subassembly 7 is close to 1 one end of quiet ring and is provided with chucking spare, chucking spare makes flexible subassembly 7 can not extend again because of outside pulling force.

When flexible subassembly 7 carries out the indentation motion, pulling ring 6 can receive the thrust from flexible subassembly 7, and the quiet ring 1 surface is kept away from that the rotating ring 2 one side is provided with and supports tight subassembly 9 from this, supports tight subassembly 9 and is close to pulling ring 6 one side and pulling ring 6 butt to the realization supports tight subassembly 9 and supports pulling ring 6, makes pulling ring 6 be difficult to the scurrying of keeping away from solid fixed ring 5 direction.

Referring to fig. 1 and 2, the telescopic assembly 7 includes a fixing rod 71, a first telescopic rod 72 and a second telescopic rod 73, the fixing rod 71 is located on one side of the stationary ring 1, one end of the fixing rod 71 close to the pulling ring 6 is detachably connected with the pulling ring 6, one end of the second telescopic rod 73 close to the stationary ring 5 is detachably connected with the stationary ring 5, the first telescopic rod 72 is telescopically arranged in the fixing rod 71, and the second telescopic rod 73 is telescopically arranged in the first telescopic rod 72.

A plurality of first fixed orificess 51 have evenly been seted up along solid fixed ring 5 circumference on solid fixed ring 5, a plurality of second fixed orificess 61 have evenly been seted up along 6 circumference of pulling ring on the pulling ring 6, the quantity of first fixed orifices 51 and second fixed orifices 61 is unanimous with the quantity of flexible subassembly 7, a plurality of second telescopic links 73 correspond and pass first fixed orifices 51, a plurality of dead levers 71 correspond and pass second fixed orifices 61, first fixed orifices 51 and second fixed orifices 61 are passed respectively at flexible subassembly 7 both ends promptly.

In order to fix the telescopic assembly 7 between the fixing ring 5 and the pulling ring 6, a stop 732 is disposed on the side of the fixing ring 5 away from the pulling ring 6, and one end of the second telescopic rod 73 close to the fixing ring 5 is fixedly welded or integrally formed with the stop 732. The fixing rod 71 is provided with threads near one end of the pulling ring 6, the fixing rod 71 is sleeved with a fixing nut 712, and the fixing rod 71 sequentially penetrates through the first fixing hole 51 and the second fixing hole 61 and then is in threaded connection with the fixing nut 712, so that the telescopic assembly 7 is fixed between the fixing ring 5 and the pulling ring 6.

Referring to fig. 2, the clamping member is a clamping bolt 8, a clamping screw hole 711 is correspondingly formed in one end, close to the first telescopic rod 72, of the fixing rod 71, a waist-shaped hole 721 is correspondingly formed in one end, close to the second telescopic rod 73, of the first telescopic rod 72 along the axial direction, and the clamping bolt 8 sequentially penetrates through the clamping screw hole 711 and the waist-shaped hole 721 to abut against the second telescopic rod 73.

For making the butt of chucking bolt 8 on second telescopic link 73 more stable, have seted up along the axial on the second telescopic link 73 and have supported tight groove 731, chucking bolt 8 butt in supporting tight groove 731.

Referring to fig. 3, the fastening assembly 9 includes a fastening block 91 and a fixing screw 92, the fixing screw 92 and the fastening block 91 are welded together or integrally formed, the outer surface of the stationary ring 1 is correspondingly provided with a plurality of fixing screw holes 11, the fixing screw 92 penetrates through the fixing screw holes 11 and is in threaded connection with the fixing screw holes 11, so that the fastening block 91 is fixed on the stationary ring 1, one side of the fastening block 91 is also abutted against the pulling ring 6, and the pulling ring 6 is not easy to move in the direction away from the fixing ring 5.

The abutting assemblies 9 are multiple and are uniformly distributed along the circumferential direction of the static ring 1. In the application, the number of the fastening assemblies 9 is preferably four, and the four fastening assemblies 9 are uniformly distributed along the circumferential direction of the stationary ring 1, so that the pull ring 6 is uniformly stressed.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a circulating water pump mechanical seal structure, includes stationary ring (1) of installing on motor output shaft and establishes rotating ring (2) on pump shaft (10) at the cover, fixed mounting has base (3) on pump shaft (10), installs spring (4) between rotating ring (2) and base (3), rotating ring (2) and pump shaft (10) form friction pair, its characterized in that: a fixed ring (5) is fixedly sleeved at one end, close to the fixed ring (1), of the movable ring (2), a pulling ring (6) is sleeved at the middle part of the fixed ring (1), a plurality of telescopic assemblies (7) are uniformly arranged between the fixed ring (5) and the pulling ring (6) along the circumferential direction, one end of each telescopic assembly (7) is detachably connected with the fixed ring (5), and the other end of each telescopic assembly (7) is detachably connected with the pulling ring (6); one end of the telescopic component (7) close to the static ring (1) is provided with a clamping piece; one side, far away from the rotating ring (2), of the outer surface of the static ring (1) is provided with a tightening component (9), and one side, close to the pulling ring (6), of the tightening component (9) is abutted against the pulling ring (6).

2. The mechanical seal structure of the circulating water pump according to claim 1, characterized in that: the abutting assembly (9) comprises an abutting block (91) and a fixing screw rod (92), the fixing screw rod (92) is fixedly connected with one side of the abutting block (91), a fixing screw hole (11) is correspondingly formed in the stationary ring (1), the fixing screw rod (92) penetrates through the fixing screw hole (11) and is in threaded connection with the fixing screw hole (11), and one side of the abutting block (91) is abutted to the pulling ring (6).

3. A mechanical seal structure of a circulating water pump according to claim 2, characterized in that: the abutting components (9) are multiple and are uniformly distributed along the circumferential direction of the static ring (1).

4. The mechanical seal structure of the circulating water pump according to claim 1, characterized in that: flexible subassembly (7) include dead lever (71), first telescopic link (72) and second telescopic link (73), dead lever (71) are close to pull ring (6) one end and can dismantle with pull ring (6) and be connected, second telescopic link (73) are close to solid fixed ring (5) one end and can dismantle with solid fixed ring (5) and be connected, first telescopic link (72) are flexible in dead lever (71), second telescopic link (73) are flexible in first telescopic link (72).

5. The mechanical seal structure of the circulating water pump according to claim 4, characterized in that: the clamping piece is a clamping bolt (8), a clamping screw hole (711) is correspondingly formed in the fixing rod (71), a waist-shaped hole (721) is correspondingly formed in the first telescopic rod (72) along the axial direction, and the clamping bolt (8) sequentially penetrates through the clamping screw hole (711) and the waist-shaped hole (721) to abut against the second telescopic rod (73).

6. The mechanical seal structure of the circulating water pump according to claim 5, characterized in that: the second telescopic rod (73) is provided with a tight supporting groove (731) along the axial direction, and the clamping bolt (8) is abutted to the tight supporting groove (731).

7. The mechanical seal structure of the circulating water pump according to claim 4, characterized in that: first fixed orifices (51) have been seted up on fixed ring (5), second fixed orifices (61) have been seted up on pull ring (6), first fixed orifices (51) are passed in second telescopic link (73), dead lever (71) pass second fixed orifices (61), fixed ring (5) are kept away from pull ring (6) one side and are provided with dog (732), second telescopic link (73) are close to fixed ring (5) one end and dog (732) fixed connection.

8. The mechanical seal structure of the circulating water pump according to claim 7, characterized in that: the fixing rod (71) is provided with threads close to one end of the pulling ring (6), the fixing rod (71) is sleeved with a fixing nut (712), and the fixing rod (71) penetrates through the second fixing hole (61) and then is in threaded connection with the fixing nut (712).

Images