CN115681202B - Shaft end sealing device of chemical centrifugal pump - Google Patents
Shaft end sealing device of chemical centrifugal pump Download PDFInfo
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- CN115681202B CN115681202B CN202310005185.4A CN202310005185A CN115681202B CN 115681202 B CN115681202 B CN 115681202B CN 202310005185 A CN202310005185 A CN 202310005185A CN 115681202 B CN115681202 B CN 115681202B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
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Abstract
The invention relates to the technical field of shaft end sealing of chemical centrifugal pumps, in particular to a shaft end sealing device of a chemical centrifugal pump, which comprises: base, pump body and motor. According to the shaft end sealing device of the chemical centrifugal pump, the two sides of the gap between the pump body and the pump shaft are simultaneously sealed through the sealing group, so that the shaft end sealing effect of the chemical centrifugal pump is improved, the shaft end sealing degree of the chemical centrifugal pump is increased, double guarantee is provided for shaft end sealing of the chemical centrifugal pump, the pump body and the motor are respectively provided with the supporting cover which are connected, and the pump shaft is supported by the two supporting covers, so that the problems that the gap between the pump shaft and the pump body is larger and larger due to vibration generated by larger centrifugal force in the rotation process of the pump shaft or parts on the motor or the pump body are damaged due to vibration force and the service life of the chemical centrifugal pump is shortened are solved.
Description
Technical Field
The invention relates to the technical field of shaft end sealing of chemical centrifugal pumps, in particular to a shaft end sealing device of a chemical centrifugal pump.
Background
The shaft end seal of the chemical centrifugal pump is used for sealing between a pump shell and a pump shaft and is the most important monitoring part in the operation process of the centrifugal pump, when a gap exists between the rotating pump shaft and the pump shell, if the suction side pressure in the pump is too low, air possibly enters the pump, air leakage can increase noise and vibration, the work of the pump is influenced, even the pump is not flooded, if the suction side pressure is high, liquid leaks (called as leakage), the leakage not only can reduce the pump efficiency, but also can pollute the environment and even cause serious accidents.
At present when sealing up chemical industry centrifugal pump axle head, it seals between pump shaft and pump casing to fill through the sealing member more, perhaps seal pump casing and pump shaft joint clearance department unilateral through the sealing member of installing on the pump body, but such centrifugal pump axle head sealing mode can only carry out simple sealing to the centrifugal pump axle head, can't play the sealed dual guarantee that plays of axle head, the vibrational force of pump shaft in the rotation process is great simultaneously, easily lead to producing wearing and tearing between pump shaft and the pump casing, lead to the clearance between pump shaft and the pump casing bigger and bigger, the vibration of pump shaft easily leads to the part vibration damage on the chemical industry centrifugal pump simultaneously, the life of chemical industry centrifugal pump is shortened.
Disclosure of Invention
In order to solve the above problems, the invention adopts the following technical scheme that a shaft end sealing device of a chemical centrifugal pump comprises: the pump body and the motor that arrange along its length direction in proper order are installed to base, the pump body and the motor at the top of base, and the mounting hole has been seted up to the lateral wall that its water inlet was kept away from to the pump body, installs the impeller on the pump shaft of the pump body, and the one end that the impeller was kept away from to the pump shaft is connected with the motor output shaft after running through the mounting hole.
The pump body all is equipped with the support cover through the detachable mode cover with the looks remote site of motor, and the looks remote site of two support covers all establishes on the pump shaft through linear bearing cover, and the looks remote site of two support covers is connected through locking group.
The inner side wall and the outer side wall of the pump body are jointly provided with a sealing group for sealing the pump shaft and the mounting hole, and the sealing group is used for sealing the pump shaft and the mounting hole on two sides.
The sealing group comprises a sealing seat arranged on the inner side wall of the pump body, a sealing seat arranged on the pump shaft is sleeved on the sealing seat, a sealing seat arranged on the pump shaft is sleeved on the outer side wall of the pump body, a supporting groove is formed in the end face, close to the mounting hole, of the sealing seat, a supporting ring is installed on the end face, far away from the mounting hole, of the supporting groove through a plurality of supporting and pressing spring rods circumferentially arranged along the pump shaft, a mounting ring is rotatably connected to the supporting ring, a large-caliber end is installed on the mounting ring, far away from the mounting hole, and a conical sealing ring filled between the mounting hole and the pump shaft is installed on the end face, close to the mounting hole, of the supporting groove, of the rotating seat is connected with the rotating seat, a fixing groove is formed in the end face, far away from the mounting hole, of the fixing groove, a push ring is slidably installed on the end face, close to the mounting hole, fillers filled between the mounting hole and the pump shaft are installed on the mounting ring and the rotating seat, and a clamping component driving the clamping component rotating along with the pump shaft.
Preferably, two the inside wall of the looks back end of the supporting cover all sets up the flexible groove of evenly arranging along pump shaft circumference, there is locking ball through the solid spring of card in the flexible inslot with the seat roll connection that slides, a plurality of card locked groove have all been seted up on the lateral wall of the pump body and the lateral wall of motor, card locked groove and locking ball one-to-one, and the locking ball card is in the card locked groove, all set up a plurality of unlocked groove with card locked groove intercommunication on the lateral wall of the pump body and the lateral wall of motor, sliding connection has the L type to push away the head in the unlocked groove, the L type pushes away the inclined plane that the terminal surface that the head is close to the locking ball was used for promoting the removal of locking ball, the lateral wall of the pump body all overlaps with the lateral wall of motor and is equipped with an annular frame of being connected with the L type to push away the head.
Preferably, the locking group includes the cutting of arranging along pump shaft circumference that the one end installation that the support cover that is connected with the pump body is close to the motor, the cutting is kept away from the terminal surface of pump shaft and has been seted up and accomodate the groove, accomodate inslot sliding connection and have the cassette, the cassette is connected through kayser spring with accomodating between the groove, the one end roll connection that kayser spring was kept away from to the cassette has antifriction ball, the one end that the support cover that is connected with the motor kept away from the motor is seted up with the slot of cutting one-to-one, install the dog that supports cover locking connection with two with the cassette cooperation in the slot, set up a plurality of lapse grooves that communicate with the slot on the support cover that is connected with the motor, lapse inslot is installed the push rod that promotes the cassette and remove through reset spring, the cover is equipped with the lapse ring that is connected with the push rod on the support cover.
Preferably, no. two seal receptacle keep away from the lateral wall of the pump body and offer a plurality of grooves that slide of arranging along pump shaft circumference, there is the roll ball through pushing away the spring roll connection in the groove that slides, the support cover inside wall that is connected with the pump body installs annular retaining ring, the lateral wall roll contact of the pump body is kept away from with annular retaining ring to the roll ball, support that is connected with the pump body covers and has seted up a plurality of shifting chutes, slide connection has the ejector pin in the shifting chute, the cover is equipped with the auxiliary spring who is connected with the shifting chute on the ejector pin, a plurality of ejector pins install jointly and push away the shifting collar, it is used for promoting the roll ball to remove to slide the inslot to push away the collar, the support that is connected with the pump body covers and establishes the ring that pushes away that is connected with the ejector pin.
Preferably, the clamping and fixing assembly comprises spring grooves which are uniformly distributed along the circumferential direction of the pump shaft and are formed in the end faces, close to the pump shaft, of the mounting rings and the rotary seat, clamping and supporting balls are arranged in the spring grooves through compression spring rods and ball seats, and locking groove grooves which are uniformly distributed along the circumferential direction of the outer ring wall of the pump shaft and correspond to the clamping and supporting balls one to one are formed in the outer ring wall of the pump shaft.
Preferably, a guide ring is arranged on the side wall, away from the pump shaft, of the first sealing seat, and the guide ring is tightly attached to the inner side wall of the pump body.
Preferably, the end face, away from the pump shaft, of the first sealing seat and the second sealing seat is provided with counter bores uniformly distributed along the circumferential direction of the pump shaft, and the first sealing seat and the second sealing seat are connected with the side wall of the pump body through screws arranged in the counter bores.
The invention has the beneficial effects that: 1. according to the shaft end sealing device of the chemical centrifugal pump, the two sides of the gap between the pump body and the pump shaft are simultaneously sealed through the sealing group, so that the shaft end sealing effect of the chemical centrifugal pump is improved, the shaft end sealing degree of the chemical centrifugal pump is increased, double guarantee is provided for shaft end sealing of the chemical centrifugal pump, the pump body and the motor are respectively provided with the supporting cover which are connected, and the pump shaft is supported by the two supporting covers, so that the problems that the gap between the pump shaft and the pump body is larger and larger due to vibration generated by larger centrifugal force in the rotation process of the pump shaft or parts on the motor or the pump body are damaged due to vibration force and the service life of the chemical centrifugal pump is shortened are solved.
2. When the rolling ball moves to one side, far away from the pump body, of the annular retainer ring, the rolling ball is not squeezed by the annular retainer ring any more, and the annular retainer ring limits the rolling ball, so that the second sealing seat is connected with the supporting cover, and the mounting stability of the second sealing seat is improved.
3. After the locking ball is aligned with the locking groove, the locking ball is clamped into the locking groove under the elastic force reset action of the clamping spring, so that the support cover is connected with the pump body/motor, and the convenience of connecting the support cover with the pump body/motor is improved.
Drawings
The invention is further illustrated by the following examples in conjunction with the drawings.
Fig. 1 is a first main perspective view of the present invention.
Fig. 2 is a second main perspective view of the present invention.
Fig. 3 is a partial perspective view of the present invention.
Fig. 4 is a top view of the present invention.
Fig. 5 isbase:Sub>A sectional view taken along linebase:Sub>A-base:Sub>A of fig. 4 in accordance with the present invention.
Fig. 6 is an enlarged view of the invention at B in fig. 5.
Fig. 7 is an enlarged view of the invention at C in fig. 5.
Fig. 8 is an enlarged view of the invention at D in fig. 5.
In the figure: 1. a base; 2. a pump body; 3. a motor; 4. a pump shaft; 5. a support housing; 50. clamping and fixing the spring; 51. a locking ball; 52. a locking groove; 53. unlocking the groove; 54. an L-shaped push head; 55. an annular frame; 6. a locking group; 60. cutting; 61. a card holder; 62. a latch spring; 63. a wear reducing ball; 64. a slot; 65. a stopper; 66. a pushing groove; 67. a push rod; 68. a pushing ring; 7. a sealing group; 70. a first sealing seat; 704. a flow guide ring; 71. a second sealing seat; 710. a pushing spring; 711. a rolling ball; 712. an annular retainer ring; 713. a top rod; 714. an auxiliary spring; 715. transferring a loop; 716. pushing and releasing the ring; 72. the spring rod is pressed; 73. a support ring; 74. a mounting ring; 75. a conical seal ring; 76. a rotating base; 77. pushing the spring; 78. a push ring; 79. a filler; 701. compressing the spring rod; 702. blocking and supporting the ball; 703. the lock groove is provided.
Description of the preferred embodiment
Embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
Referring to fig. 1, fig. 2, fig. 3 and fig. 4, a shaft end sealing device of a chemical centrifugal pump comprises: base 1, the pump body 2 and motor 3, the pump body 2 and the motor 3 of arranging in proper order along its length direction are installed at base 1's top, and the mounting hole has been seted up to the lateral wall that its water inlet was kept away from to the pump body 2, installs the impeller on the pump shaft 4 of the pump body 2, and the one end that the impeller was kept away from to pump shaft 4 is connected with motor 3 output shaft after running through the mounting hole.
The pump body 2 all overlaps through detachable mode with the looks remote site of motor 3 and is equipped with support cover 5, and the looks remote site of two support covers 5 all overlaps on pump shaft 4 through linear bearing, and the looks remote site of two support covers 5 is connected through locking group 6.
The inner side wall and the outer side wall of the pump body 2 are jointly provided with a sealing group 7 for sealing the pump shaft 4 and the mounting hole, and the sealing group 7 is used for sealing the pump shaft 4 and the mounting hole at two sides.
Referring to fig. 2, fig. 3 and fig. 6, the seal assembly 7 includes a first seal seat 70 disposed on the inner sidewall of the pump body 2 and sleeved on the pump shaft 4 and a second seal seat 71 disposed on the outer sidewall of the pump body 2 and sleeved on the pump shaft 4, a first abutting groove is disposed on an end surface of the first seal seat 70 close to the mounting hole, a second abutting groove is disposed on an end surface of the second seal seat 71 close to the mounting hole, a first abutting groove is disposed on an end surface of the first abutting groove far from the mounting hole, and is provided with an abutting ring 73 through a plurality of abutting spring rods 72 circumferentially arranged along the pump shaft 4, an mounting ring 74 is rotatably connected on the abutting ring 73, a tapered seal ring 75 having a large caliber end far from the mounting hole and filling between the mounting hole and the pump shaft 4 is mounted on the mounting ring 74, a second abutting groove is rotatably connected with a swivel seat 76, a fixing groove is disposed on an end surface of the swivel seat 76 close to the mounting hole, a push ring 78 is slidably mounted on an end surface of the fixing groove far from the mounting hole through a plurality of abutting springs 77 circumferentially arranged along the pump shaft 4, a filler 79 filled between the mounting hole and the pump shaft 4 is mounted on an end surface of the push ring 78, and a clamping assembly of the mounting ring 78 is mounted on the mounting ring 76.
The first sealing seat 70 and the second sealing seat 71 are installed on two sides of the installation hole, the installation ring 74 is pushed by the elastic force of the abutting spring rod 72 to extrude the conical sealing ring 75 at the position of a connecting gap between the installation hole and the pump shaft 4 to seal the gap, the packing 79 also seals the position of the connecting gap between the installation hole and the pump shaft 4 at the position of the connecting gap between the installation hole and the pump shaft 4 under the action of the pushing force of the pushing spring 77 and the abutting spring 78, when the gap between the pump shaft and the installation hole becomes larger, the packing 79 and the conical sealing ring 75 move towards the position of the gap between the pump shaft and the installation hole under the pushing force of the abutting spring rod 72 and the abutting spring 77, the effect of sealing the gap between the pump shaft and the installation hole is achieved all the time, the two sides of the connecting gap between the installation hole and the pump shaft 4 are simultaneously sealed, the sealing effect of the chemical centrifugal pump is improved, the sealing degree of the chemical pump is increased, the sealing degree of the shaft end is provided with double guarantee for the sealing of the chemical centrifugal pump, the installation ring 74 and the rotary seat 76 are clamped on the pump shaft end, the abrasion of the shaft end of the packing ring 75 and the shaft end 79, and the friction force of the pump shaft 79 is avoided, and the centrifugal pump shaft end 79, and the problem of the centrifugal pump is solved, and the centrifugal pump.
The inside wall of the tip that two support covers 5 are connected supports pump shaft 4, stability when improving pump shaft 4 rotation through support covers 5 to pump shaft 4's support, reduce pump shaft 4's vibrational force at rotatory in-process, and then avoid causing wearing and tearing to the mounting hole because of pump shaft 4's rotatory vibrational force is big, lead to the bigger and bigger problem in clearance between pump shaft 4 and the mounting hole, the part of pump shaft 4 vibration on to the pump body 2 and the motor 3 has also been avoided simultaneously causing the damage, the problem that leads to the life-span of chemical centrifugal pump shortens, and two support covers 5 and motor 3, can dismantle between the pump body 2 and be connected the inspection that makes sealed group 7 and maintain more convenient.
Referring to fig. 6, the clamping and fixing assembly includes spring grooves uniformly arranged along the circumferential direction of the pump shaft 4, which are formed on the end surfaces of the mounting ring 74 and the rotary seat 76 close to the pump shaft 4, clamping balls 702 are mounted in the spring grooves through compression spring rods 701 and ball seats, and locking grooves 703 uniformly arranged along the circumferential direction and corresponding to the clamping balls 702 one to one are formed on the outer annular wall of the pump shaft 4.
When the first seal retainer 70 and the second seal retainer 71 are sleeved on the pump shaft 4, the clamping ball 702 enters the spring groove under the extrusion force action of the side wall of the pump shaft 4, after the first seal retainer 70 and the second seal retainer 71 are connected and fixed with the pump body 2, the pump shaft 4 is rotated, the clamping ball 702 is clamped in the lock groove 703 under the elastic force action of the compression spring rod 701, the pump shaft 4 is driven to synchronously rotate along with the pump shaft 4 by the clamping of the clamping ball 702 to drive the mounting ring 74 and the rotary seat 76 to rotate along with the pump shaft 4, and the clamping ball 702 is axially moved along the pump shaft 4 in the lock groove 703.
Referring to fig. 3 and 5, a flow guide ring 704 is installed on the side wall of the first seal seat 70 away from the pump shaft 4, the flow guide ring 704 is tightly attached to the inner side wall of the pump body 2, and an arc-shaped surface is formed between the end surface of the flow guide ring 704 away from the support cover 5 and the side wall of the first seal seat 70, and the arc-shaped surface can guide water entering the chemical centrifugal pump and reduce impact force of the water.
Referring to fig. 3 and 5, the end surfaces of the first sealing seat 70 and the second sealing seat 71 away from the pump shaft 4 are both provided with counter bores uniformly arranged along the circumferential direction of the pump shaft 4, and the first sealing seat 70 and the second sealing seat 71 are both connected with the side wall of the pump body 2 through screws arranged in the counter bores, so as to prevent the screw protrusions from affecting the installation of other parts.
Referring to fig. 2, 3, 4, 5, and 8, telescopic slots evenly arranged along the circumferential direction of the pump shaft 4 are formed in the inner side walls of the two opposite back ends of the support covers 5, locking balls 51 are connected to the telescopic slots through clamping springs 50 and sliding seats in a rolling manner, a plurality of locking slots 52 are formed in the outer side walls of the pump body 2 and the motor 3, the locking slots 52 correspond to the locking balls 51 one by one, the locking balls 51 are clamped in the locking slots 52, a plurality of unlocking slots 53 communicated with the locking slots 52 are formed in the outer side walls of the pump body 2 and the motor 3, L-shaped push heads 54 are slidably connected to the unlocking slots 53, the end faces of the L-shaped push heads 54 close to the locking balls 51 are inclined faces for pushing the locking balls 51 to move, and annular frames 55 connected with the L-shaped push heads 54 are formed in the outer side walls of the pump body 2 and the motor 3.
When the support cover 5 is sleeved and fixed on the pump body 2/motor 3, the locking ball 51 extrudes the clamping and fixing spring 50 under the extrusion action of the side wall of the pump body 2/motor 3 and moves towards the telescopic groove until the inner wall of the support cover 5 is tightly abutted against the pump body 2/motor 3, then the support cover 5 is rotated, so that the locking ball 51 is aligned with the clamping and fixing groove 52, the locking ball 51 is clamped into the clamping and fixing groove 52 under the elastic force resetting action of the clamping and fixing spring 50, so that the support cover 5 is connected with the pump body 2/motor 3, the convenience of connecting the support cover 5 with the pump body 2/motor 3 is improved, the support cover 5 is connected with the pump shaft 4 through a linear bearing, and the pump shaft 4 can slide along the axial direction of the support cover 5 and rotate in the support cover 5.
When the supporting cover 5 needs to be detached, the annular frame 55 drives the L-shaped pushing head 54 to move and extrude the locking balls 51 to move in the telescopic slot, so that the locking balls 51 are separated from the locking slots 52, and then the supporting cover 5 is taken down to overhaul the chemical centrifugal pump.
Referring to fig. 7, the locking group 6 includes a slip 60 circumferentially arranged along the pump shaft 4 and installed at one end of the support cover 5 connected to the pump body 2 close to the motor 3, a receiving groove is formed in an end surface of the slip 60 away from the pump shaft 4, a clamping seat 61 is slidably connected in the receiving groove, the clamping seat 61 and the receiving groove are connected through a locking spring 62, one end of the clamping seat 61 away from the locking spring 62 is connected with a antifriction ball 63 in a rolling manner, one end of the support cover 5 connected to the motor 3 away from the motor 3 is provided with slots 64 corresponding to the slip 60 one by one, stoppers 65 matched with the clamping seat 61 to lock and connect the two support covers 5 are installed in the slots 64, a plurality of pushing grooves 66 communicated with the slots 64 are formed in the support cover 5 connected to the motor 3, a pushing rod 67 for pushing the clamping seat 61 to move is installed in the pushing groove 66 through a return spring, and a pushing ring 68 connected with the pushing rod 67 is sleeved on the support cover 5.
When docking two support covers 5, align cutting 60 with slot 64, then only need promote cutting 60 and make it remove in slot 64, cassette 61 extrudes kayser spring 62 and income is accomodate the inslot under the extrusion force effect of dog 65, support tightly until cutting 60 and slot 64 inside wall, cassette 61 removes outside accomodating the groove under kayser spring 62's the elasticity effect that resets this moment, cassette 61 hugs closely with the lateral wall of dog 65 simultaneously, dog 65 blocks spacingly with cassette 61, make cutting 60 and slot 64 connect fixedly, thereby realize two connections that support covers 5, also make two connections that support covers 5 more convenient.
When the two supporting covers 5 are detached, the pushing ring 68 is pulled to drive the pushing rod 67 to move towards the clamping seat 61, the pushing rod 67 extrudes the clamping seat 61 into the accommodating groove until the clamping seat 61 is separated from the stop block 65, and at this time, one of the supporting covers 5 is pulled to move, so that the two supporting covers 5 can be separated.
Referring to fig. 2 and 6, a plurality of sliding grooves are formed in the side wall of the second seal seat 71 away from the pump body 2, the sliding grooves are circumferentially distributed along the pump shaft 4, rolling balls 711 are connected to the sliding grooves in a rolling manner through pushing springs 710, an annular retaining ring 712 is installed on the inner side wall of the support cover 5 connected to the pump body 2, the rolling balls 711 and the annular retaining ring 712 are in rolling contact with the side wall of the support cover 5 away from the pump body 2, a plurality of moving grooves are formed in the support cover 5 connected to the pump body 2, push rods 713 are slidably connected to the moving grooves, auxiliary springs 714 connected to the moving grooves are sleeved on the push rods 713, pushing rings 715 are installed on the push rods 713 together, the pushing rings 715 are used for pushing the rolling balls 711 to move into the sliding grooves, and a pushing ring 716 connected to the push rods 713 is sleeved on the support cover 5 connected to the pump body 2.
When the supporting cover 5 is installed on the pump body 2, the annular retainer ring 712 extrudes the rolling ball 711 to enable the rolling ball 711 to enter the sliding groove, when the inner side wall of the supporting cover 5 is tightly attached to the side wall of the pump body 2, the rolling ball 711 moves to one side of the annular retainer ring 712 far away from the pump body 2 and is not extruded by the annular retainer ring 712, the annular retainer ring 712 limits the rolling ball 711, so that the second sealing seat 71 is connected with the supporting cover 5, and the installation stability of the second sealing seat 71 is improved.
When the support cover 5 is detached, the pushing ring 716 is pushed to move towards the pump body 2, the pushing ring 716 drives the ejector rod 713 and the pushing ring 715 to move towards the rolling ball 711 and press the rolling ball 711, so that the rolling ball 711 enters the sliding groove, the annular retainer ring 712 does not limit the rolling ball 711 any more, and the support cover 5 is detached.
When the centrifugal pump works, the first sealing seat 70 and the second sealing seat 71 are installed on two sides of the installation hole, the installation ring 74 is pushed by the elastic force of the abutting spring rod 72 to extrude the conical sealing ring 75 at the position of a connecting gap between the installation hole and the pump shaft 4 to plug the gap, the packing 79 also plugs the position of the connecting gap between the installation hole and the pump shaft 4 under the pushing force action of the pushing ring 78 and the abutting spring 77, when the gap between the pump shaft and the installation hole becomes larger, the packing 79 and the conical sealing ring 75 are pushed by the elastic force of the abutting spring rod 72 and the abutting spring 77 to move towards the position of the gap between the pump shaft and the installation hole, so that the effect of sealing the gap between the pump shaft and the installation hole is always realized, the two sides of the connecting gap between the installation hole and the pump shaft 4 are simultaneously sealed, the sealing effect of the sealing of the chemical pump shaft is improved, the sealing degree of the shaft end sealing is increased, a double guarantee is provided for the sealing of the chemical pump shaft, the clamping component clamps the installation ring 74 and the rotary seat on the pump shaft 4, the installation ring 74 and the rotary seat 76, the conical sealing ring 75 and the pump shaft end of the pump shaft are prevented from being abraded along with the conical sealing ring 75, and the axial friction between the pump shaft of the pump shaft, and the conical sealing ring 79, and the pump shaft.
The inside wall of the tip that two support covers 5 are connected supports pump shaft 4, stability when improving pump shaft 4 rotation through support cover 5 to pump shaft 4's support, reduce pump shaft 4 vibration power at rotatory in-process, and then avoid causing wearing and tearing to the mounting hole because of pump shaft 4's rotatory vibration power is big, lead to the problem that the clearance between pump shaft 4 and the mounting hole is bigger and bigger, the part of pump shaft 4 vibration on to the pump body 2 and motor 3 has also been avoided simultaneously causing the damage, the problem that the life-span of leading to the chemical centrifugal pump shortens, and two support covers 5 and motor 3, the dismantlement between the pump body 2 is connected and is made the inspection and the maintenance of seal group 7 more convenient.
Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.
Claims (7)
1. A kind of chemical centrifugal pump shaft end sealing means, including: base (1), the pump body (2) and motor (3) of arranging in proper order along its length direction are installed at the top of base (1), and the mounting hole has been seted up to the lateral wall of its water inlet is kept away from in the pump body (2), installs the impeller on pump shaft (4) of the pump body (2), and the one end that the impeller was kept away from in pump shaft (4) is connected with motor (3) output shaft after running through the mounting hole, its characterized in that:
the opposite ends of the pump body (2) and the motor (3) are respectively sleeved with a support cover (5) in a detachable mode, the opposite ends of the two support covers (5) are respectively sleeved on the pump shaft (4) through a linear bearing, and the opposite ends of the two support covers (5) are connected through a locking group (6);
the inner side wall and the outer side wall of the pump body (2) are jointly provided with a sealing group (7) for sealing the pump shaft (4) and the mounting hole, and the sealing group (7) is used for sealing the pump shaft (4) and the mounting hole at two sides;
the sealing group (7) comprises a first sealing seat (70) which is arranged on the inner side wall of the pump body (2) and is sleeved on the pump shaft (4) and a second sealing seat (71) which is arranged on the outer side wall of the pump body (2) and is sleeved on the pump shaft (4), a first abutting groove is formed in the end face, close to the mounting hole, of the first sealing seat (70), a second abutting groove is formed in the end face, close to the mounting hole, of the second sealing seat (71), an abutting ring (73) is arranged on the end face, far away from the mounting hole, of the first abutting groove through a plurality of abutting pressure spring rods (72) which are circumferentially distributed along the pump shaft (4), and a mounting ring (74) is rotatably connected to the abutting ring (73), install on collar (74) heavy-calibre end and keep away from mounting hole and carry out tapered seal (75) of packing between mounting hole and pump shaft (4), it is connected with roating seat (76) to support the inslot rotation for two numbers, roating seat (76) have been offered the fixed slot near the terminal surface of mounting hole, the terminal surface that the mounting hole was kept away from to the fixed slot has push ring (78) through a plurality of supporting push spring (77) slidable mounting who arranges along pump shaft (4) circumference, filler (79) of packing between mounting hole and pump shaft (4) are installed to the terminal surface that push ring (78) are close to the mounting hole, all install on collar (74) and roating seat (76) and drive it along with pump shaft (4) pivoted card solid subassembly.
2. The shaft end sealing device of the chemical centrifugal pump as claimed in claim 1, wherein: two the inside wall of supporting cover (5) looks back end all sets up the flexible groove of evenly arranging along pump shaft (4) circumference, there are locking ball (51) through solid spring (50) of card in the flexible inslot with the seat roll connection that slides, a plurality of card locked groove (52) have all been seted up on the lateral wall of the pump body (2) and the lateral wall of motor (3), card locked groove (52) and locking ball (51) one-to-one, and locking ball (51) card is in card locked groove (52), all set up a plurality of unblock groove (53) that communicate with card locked groove (52) on the lateral wall of the pump body (2) and the lateral wall of motor (3), sliding connection has L type to push away head (54) in unblock groove (53), the terminal surface that L type pushes away head (54) is close to locking ball (51) is for being used for promoting the inclined plane that locking ball (51) removed, the lateral wall of the pump body (2) and the lateral wall of motor (3) all overlap and are equipped with an annular frame (55) that is connected with L type pushes away head (54).
3. The shaft end sealing device of the chemical centrifugal pump as claimed in claim 1, wherein: the locking group (6) comprises insertion strips (60) which are arranged along the circumferential direction of a pump shaft (4) and are arranged at one end, close to a motor (3), of a support cover (5) connected with a pump body (2), a containing groove is formed in the end face, far away from the pump shaft (4), of the insertion strips (60), clamping seats (61) are connected with the containing groove through clamping springs (62), one end, far away from the clamping springs (62), of each clamping seat (61) is connected with a friction reducing ball (63) in a rolling mode, one end, far away from the motor (3), of the support cover (5) connected with the motor (3) is provided with a plurality of pushing grooves (66) communicated with the corresponding insertion strips (60) one by one, stop blocks (65) which are in locking connection with the two support covers (5) through matching with the clamping seats (61) are installed in the insertion grooves (64), pushing rods (67) which push the clamping seats (61) to move are installed on the support cover (5) connected with the motor (3), and pushing rings (67) which are connected with the support covers (5) are sleeved with pushing rods (67).
4. The shaft end sealing device of the chemical centrifugal pump as claimed in claim 1, wherein: the side wall of the second sealing seat (71) far away from the pump body (2) is provided with a plurality of sliding grooves which are circumferentially arranged along the pump shaft (4), the sliding grooves are internally connected with rolling balls (711) in a rolling manner through pushing springs (710), the inner side wall of a support cover (5) connected with the pump body (2) is provided with an annular check ring (712), the rolling balls (711) and the annular check ring (712) are in rolling contact with the side wall far away from the pump body (2), the support cover (5) connected with the pump body (2) is provided with a plurality of moving grooves, push rods (713) are slidably connected in the moving grooves, auxiliary springs (714) connected with the moving grooves are sleeved on the push rods (713), the push rods (713) are jointly provided with pushing rings (715), the pushing rings (715) are used for pushing the rolling balls (715) to move towards the sliding grooves, and the pushing rings (716) connected with the push rods (713) are sleeved on the support cover (5) connected with the pump body (2).
5. The shaft end sealing device of the chemical centrifugal pump as claimed in claim 1, wherein: the clamping and fixing assembly comprises spring grooves which are uniformly distributed along the circumferential direction of the pump shaft (4) and are formed in the end faces, close to the pump shaft (4), of the mounting ring (74) and the rotating seat (76), clamping and supporting balls (702) are arranged in the spring grooves through compression spring rods (701) and ball seats, and locking belt grooves (703) which are uniformly distributed along the circumferential direction of the outer ring wall of the pump shaft (4) and correspond to the clamping and supporting balls (702) one to one are formed in the outer ring wall of the pump shaft (4).
6. The shaft end sealing device of the chemical centrifugal pump as claimed in claim 1, wherein: a guide ring (704) is installed on the side wall, away from the pump shaft (4), of the first sealing seat (70), and the guide ring (704) is tightly attached to the inner side wall of the pump body (2).
7. The shaft end sealing device of the chemical centrifugal pump as claimed in claim 1, wherein: the pump shaft (4) is kept away from the end face of the pump shaft (4) with No. two seal holders (71) and a counter bore evenly arranged along the circumference of the pump shaft (4) is formed in the first seal holder (70), and the second seal holder (71) are connected with the side wall of the pump body (2) through screws arranged in the counter bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310005185.4A CN115681202B (en) | 2023-01-04 | 2023-01-04 | Shaft end sealing device of chemical centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310005185.4A CN115681202B (en) | 2023-01-04 | 2023-01-04 | Shaft end sealing device of chemical centrifugal pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115681202A CN115681202A (en) | 2023-02-03 |
| CN115681202B true CN115681202B (en) | 2023-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310005185.4A Active CN115681202B (en) | 2023-01-04 | 2023-01-04 | Shaft end sealing device of chemical centrifugal pump |
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| Country | Link |
|---|---|
| CN (1) | CN115681202B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205533395U (en) * | 2016-04-27 | 2016-08-31 | 江西荣恩能源科技有限公司 | Multistage sealing device of propeller pump axle head |
| CN107559209A (en) * | 2017-10-27 | 2018-01-09 | 上海中韩杜科泵业制造有限公司 | A kind of horizontal end suction centrifugal pump |
| CN212536077U (en) * | 2020-05-15 | 2021-02-12 | 沧州源森泰机械制造有限公司 | Three-dimensional flow permanent magnet synchronous pipeline type centrifugal pump |
| CN214742313U (en) * | 2021-01-29 | 2021-11-16 | 国电龙达电力设备(天津)有限责任公司 | Packing sealing device of single-stage single-suction centrifugal pump |
| CN218151474U (en) * | 2022-09-09 | 2022-12-27 | 凯泉集团有限公司 | Flushing centrifugal pump with two sets of mechanical seals |
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2023
- 2023-01-04 CN CN202310005185.4A patent/CN115681202B/en active Active
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| Publication number | Publication date |
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| CN115681202A (en) | 2023-02-03 |
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